
AMS Sectional Meeting Full Program
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1999 Spring Central Section Meeting
Urbana, IL, March 1821, 1999
Meeting #941
Associate secretaries: Susan J Friedlander, AMS susan@math.northwestern.edu
Thursday March 18, 1999
Friday March 19, 1999

Friday March 19, 1999, 7:30 a.m.5:00 p.m.
Meeting Registration
Second Floor, Altgeld Hall

Friday March 19, 1999, 7:30 a.m.5:00 p.m.
Exhibit and Book Sale
Library, Altgeld Hall

Friday March 19, 1999, 8:30 a.m.10:55 a.m.
Special Session on Nonstandard Analysis, I
Room 269, Everitt Laboratory Organizers: C. Ward Henson, University of IllinoisUrbana henson@math.uiuc.edu
Peter Loeb, University of IllinoisUrbana loeb@math.uiuc.edu

8:30 a.m.
Base Operators and their Topologies.
Jurgen E Bliedtner, University of Frankfurt
Peter A Loeb*, University of Illinois, Urbana
(94126112)

9:00 a.m.
Infinite products of infinite measures.
David A. Ross*, University of Hawaii
Peter A. Loeb, University of Illinois
(94128238)

9:30 a.m.
Extensions of the Wiener space and anticipating Girsanov transformations.
Horst Osswald*, University of Munich
(94128323)

10:00 a.m.
Conditional Law of Large Numbers in the Exact Settings.
Yeneng Sun*, National University of Singapore
(94160148)

10:30 a.m.
Continua of Loeb measures and Borel bijections.
Kenneth Schilling*, University of MichiganFlint
Bosko \v Zivaljevi \' c, Cisco Systems
(9410398)

Friday March 19, 1999, 8:30 a.m.10:50 a.m.
Special Session on Elementary and Analytic Number Theory, I
Room 245, Altgeld Hall Organizers: Harold G. Diamond, University of Illinois, Urbana diamond@math.uiuc.edu
A. J. Hildebrand, University of Illinois, Urbana hildebr@math.uiuc.edu

8:30 a.m.
Ramanujan's Second Unpublished Manuscript on the Partition Function.
Bruce C. Berndt*, University of Illinois at UrbanaChampaign
Ken Ono, Pennsylvania State University at University Park
(94111269)

9:00 a.m.
Two tenth order mock theta function identities in Ramanujan's lost notebook.
YounSeo Choi*, University of Illinois at UrbanaChampaign
(94111218)

9:30 a.m.
A certain quotient of etafunctions found in Ramanujan's lost notebook.
Bruce C Berndt, University of Illinois at UrbanaChampaign
Heng H Chan, National University of Singapore
SoonYi Kang*, University of Illinois at UrbanaChampaign
Liang C Zhang, Southwest Missouri State University
(94111194)

10:00 a.m.
Two dimensional vector spaces of partial $q$difference equations for basic hypergeometric functions.
Jaebum Sohn*, University of Illinois at UrbanaChampaign
Douglas C Bowman, University of Illinois at UrbanaChampaign
(94111285)

10:30 a.m.
Polynomial Continued Fractions.
Douglas C Bowman*, University of Illinois, ChampaignUrbana
James G McLaughlin, University of Illinois, UrbanaChampaign
(94141314)

Friday March 19, 1999, 8:30 a.m.10:50 a.m.
Special Session on Diophantine Equations, Inequalities and Related Arithmetic Problems, I
Room 143, Altgeld Hall Organizers: Michael Bennett, University of Illinois, Urbana mabennett@math.uiuc.edu
Trevor Wooley, University of Michigan wooley@math.lsa.umich.edu

8:30 a.m.
Mahler's measure and the volume of hyperbolic manifolds .
David W. Boyd*, U. British Columbia
(9411134)

9:00 a.m.
On the integer Chebyshev constant and the asymptotic structure of the integer Chebyshev polynomials.
Igor E Pritsker*, Case Western Reserve University
(94111190)

10:00 a.m.
Diophantine approximation in the vector space ${\Bbb Q} + \alpha{\Bbb Q}$.
Edward B Burger*, Williams College & University of Colorado at Boulder
(94111225)

10:30 a.m.
Estimates for the Number of Polynomials with Bounded Degree and Bounded Mahler Measure.
SheyJey Chern, University of Texas at Austin
Jeffrey D Vaaler*, University of Texas at Austin
(94111181)

Friday March 19, 1999, 8:30 a.m.10:50 a.m.
Special Session on Operator Spaces and Their Applications, I
Room 165, Everitt Laboratory Organizers: Gilles Pisier, Texas A & M gip@ccr.jussieu.fr
ZhongJin Ruan, University of IllinoisUrbana ruan@math.uiuc.edu

8:30 a.m.
Hilbert $C^{*}$modules: A Useful Tool.
SzeKai Tsui*, Oakland University
(94146183)

9:00 a.m.
Modules over Operator algebras.
David P Blecher*, University of Houston
(9414699)

9:30 a.m.
Isometric dilations of noncommuting ntuples and representations of the CuntzToeplitz algebra.
Kenneth R. Davidson*, University of Waterloo
David W. Kribs, University of Waterloo
Miron Shpigel, University of Waterloo
(94147210)

10:00 a.m.
Quantized Commutant Lifting and Functional Calculus in Several Variables.
Gelu F Popescu*, University of Texas at San Antonio
(9414792)

10:30 a.m.
Local reflexivity and decomposable operators between C*algebras.
Christian Le Merdy*, University of Houston and Universite de FrancheComte
(94146176)

Friday March 19, 1999, 8:30 a.m.10:50 a.m.
Special Session on Commutative Algebra, I
Room 345, Altgeld Hall Organizers: Joseph Brennan, North Dakota State University brennan@plains.nodak.edu
Sankar Dutta, University of Illinois, Urbana dutta@math.uiuc.edu
Robert Fossum, University of Illinois, Urbana rfossum@uiuc.edu
Phillip Griffith, University of Illinois, Urbana griffith@math.uiuc.edu

8:30 a.m.
Baxter algebras and shuffle products.
Li Guo, Rutgers University
William F Keigher*, Rutgers University
(9411331)

9:00 a.m.
Hochschild homology of Hypersurfaces with Isolated Singularities.
Ruth I Michler*, University of North Texas
(94113303)

9:30 a.m.
Finite generation of Hochschild homology algebras.
Luchezar L. Avramov*, Purdue University
Srikanth Iyengar, Univesity of Missouri
(94113331)

10:00 a.m.
On Bass numbers of modules over local Noetherian rings.
Mee Kyung Kim, Sung Kyun Kwan University, Suwon, Korea
Jee Heub Koh*, Korea Institute for Advanced Study, Seoul, Korea
Kisuk Lee, Sookmyung Women's University, Seoul, Korea
(94113315)

10:30 a.m.
QuasiCohenMacaulay Homomorphisms.
HansBj{\o}rn Foxby*, K{\o}benhavns Universitet
(94113330)

Friday March 19, 1999, 9:00 a.m.10:45 a.m.
Special Session on Recent Progress in Elementary Geometry, I
Room 445, Altgeld Hall Organizers: John E. Wetzel, University of IllinoisUrbana jwetzel@math.uiuc.edu
Clark Kimberling, University of Evansville ck6@evansville.edu

9:00 a.m.
Revisiting some tiling problems.
Doris J. Schattschneider*, Moravian College
(94152150)

10:00 a.m.
Okumura's double tiling.
John Rigby*, Cardiff University
(94151149)

Friday March 19, 1999, 9:00 a.m.10:50 a.m.
Special Session on Galois Representations, I
Room 141, Altgeld Hall Organizers: Nigel Boston, University of IllinoisUrbana boston@math.uiuc.edu
Michael Larsen, University of Missouri larsen@math.missouri.edu

9:00 a.m.
Lfunctions of crystals over function fields, a cohomological approach.
Gebhard Boeckle*, University of Mannheim
Richard Pink, University of Mannheim
(94111287)

9:45 a.m.
Extensions of Crystalline Representations.
Matthew Emerton*, University of Michigan
Mark Kisin, Westfalischen Wilhelms Universitat
(94111172)

10:15 a.m.
Shimura varieties and the MumfordTate conjecture.
Adrian Vasiu*, University of California, Berkeley
(9411494)

Friday March 19, 1999, 9:00 a.m.10:50 a.m.
Special Session on Martingales and Analysis, I
Room 161, Everitt Laboratory Organizers: Joseph Max Rosenblatt, University of IllinoisUrbana jrsnbltt@math.uiuc.edu
Renming Song, University of IllinoisUrbana rsong@math.uiuc.edu
Richard B. Sowers, University of IllinoisUrbana rsowers@math.uiuc.edu

9:00 a.m.
Noncommutative martingale inequalities in $L_p$ and related questions.
Gilles J Pisier*, Texas A\& M
(9416052)

9:30 a.m.
Martingales on trees.
Davar Khoshnevisan*, University of Utah
(94160249)

10:00 a.m.
Some Analogies Between Martingales and Dirichlet Functions.
Russell D Lyons*, Indiana University
Alano Ancona, Universit\'e de ParisSud
Yuval Peres, Hebrew University of Jerusalem
(94160137)

10:30 a.m.
Some unknown constants in inequalities .
Mate Wierdl*, University of Memphis
(94142104)

Friday March 19, 1999, 9:00 a.m.10:50 a.m.
Special Session on Graph Theory, I
Room 243, Altgeld Hall Organizers: Douglas B. West, University of Illinois, Urbana west@math.uiuc.edu

9:00 a.m.
The spectral radius of graphs on surfaces.
Mark N. Ellingham*, Vanderbilt University
Xiaoya Zha, Middle Tennessee State University
(94105141)

9:30 a.m.
Genus bounds for embeddings with large connectivity and large representativity.
Michael Plummer, Vanderbilt University
Xiaoya Zha*, Middle Tennessee State University
(94105168)

10:00 a.m.
On some extensions of barvisibility graphs.
Joan P. Hutchinson*, Macalester College
(9410544)

10:30 a.m.
Recent Research on Digraph Minors.
Neil Robertson*, The Ohio state University
(94105271)

Friday March 19, 1999, 9:00 a.m.10:50 a.m.
Special Session on Integrable Equations, I
Room 147, Altgeld Hall Organizers: Igor Krichever, Columbia University krichev@cpw.math.columbia.edu
Kirill Vaninsky, Kansas State University vaninsky@math.ksu.edu

9:00 a.m.
RogersRamanujan identites in integrable statistical mechanical models.
Barry McCoy*, SUNY Stony Brook
(9413563)

9:30 a.m.
New types of soliton interactions for nonlinear equations.
Mark S Alber*, University of Notre Dame
Gregory G Luther, Northwestern University
Charles Miller, University of Notre Dame
(9413516)

10:00 a.m.
Noncommutative integrability of generalized rigid body equations.
Anthony M Bloch*, University of Michigan
Peter E Crouch, Arizona State University
Jerrold E Marsden, California Institute of Technology
Tudor S Ratiu, University of California at Santa Cruz
(9417020)

10:30 a.m.
Extended Integrability and BiHamiltonian Systems.
Oleg I. Bogoyavlenskij*, Queen's University, Kingston, Canada, K7L 3N6
(9413417)

Friday March 19, 1999, 9:00 a.m.10:50 a.m.
Special Session on Holomorphic Vector Bundles and Complex Geometry, I
Room 343, Altgeld Hall Organizers: Maarten Bergvelt, University of IllinoisUrbana bergv@math.uiuc.edu
Steven Bradlow, University of IllinoisUrbana bradlow@vortex.math.uiuc.edu
John P. D'Angelo, University of IllinoisUrbana jpda@math.uiuc.edu
Lawrence Ein, University of IllinoisChicago

9:00 a.m.
The decomposition theorem: Heisenberg algebras, Hilbert schemes and Equivariant KTheory.
Mark de Cataldo*, Harvard University
(9411451)

9:30 a.m.
Existence of K\"ahlerEinstein Metrics on certain Hilbert Schemes.
Zhuangdan D Guan*, Princeton University
Xiuxiong Chen, Same as the first author
(9415376)

10:00 a.m.
Inhomogeneous hyperK\"ahler geometry with torsion.
Yat Sun Poon*, UC Riverside
Gueo Grantcharov, UC Riverside
(94153240)

10:30 a.m.
Low degree coverings of homogeneous spaces.
Meeyoung Kim*, Michigan State University
Laurent Manivel, Universite de Grenoble
(94114216)

Friday March 19, 1999, 9:00 a.m.10:50 a.m.
Special Session on Combinatorial Designs, I
Room 241, Altgeld Hall Organizers: Ilene H. Morgan, University of MissouriRolla imorgan@umr.edu
Walter D. Wallis, Southern Illinois UniversityCarbondale wdwallis@math.siu.edu

9:00 a.m.
New balanced neighbor designs from modifications of the Lucas/Walecki construction.
Donald A. Preece*, University of Kent at Canterbury
(9410553)

10:00 a.m.
Finding Large Single Change Covering Designs.
Nicholas C Phillips*, Southern Illinois University
(94105102)

10:30 a.m.
Almost Perfect OneFactorizations: Some Examples and Properties.
Emily R Petrie*, Merrimack College
Edwin Ihrig, Arizona State University
(94105306)

Friday March 19, 1999, 9:00 a.m.10:50 a.m.
Special Session on Lowdimensional Topology, I
Room 341, Altgeld Hall Organizers: Mark Brittenham, University of North Texas britten@unt.edu
Charles Delman, Eastern Illinois University cfcid@eiu.edu
Rachel Roberts, Washington University roberts@sulu.wustl.edu

9:00 a.m.
The Apolynomial from the Noncommutative Viewpoint.
Charles D Frohman*, The University of Iowa
Razvan Gelca, The University of Michigan
Walter LoFaro, Boise State University
(94157136)

10:00 a.m.
Bracket and regular isotopy of singular links.
Chichen Michael Tsau*, Saint Louis University
(94157319)

10:30 a.m.
Vassiliev invariants for spin 3manifolds.
Nadya K Shirokova*, UIUC
(9415708)

Friday March 19, 1999, 9:00 a.m.10:50 a.m.
Special Session on Wavelet Analysis and Multiresolution Methods, I
Room 151, Everitt Laboratory Organizers: TianXiao He, Illinois Wesleyan University the@sun.iwu.edu

9:00 a.m.
Information Cost Functions.
Mladen Victor Wickerhauser*, Washington University, St Louis, Missouri
(9414258)

9:30 a.m.
Conversion Between Orthogonal And Biorthogonal Wavelets.
Jun Tian*, Computational Mathematics Laboratory, Rice University, Houston, Texas
Raymond O. Wells, Jr., Computational Mathematics Laboratory, Rice University, Houston, Texas
(94142184)

10:00 a.m.
Optimal Multivariate Biorthogonal Wavelets and CBC Algorithm.
Bin Han*, Oklahoma State University
(94141191)

10:30 a.m.
Bases consisting of rational functions of uniformly bounded degrees or more general functions.
Pencho P Petrushev*, University of South Carolina
(94142295)

Friday March 19, 1999, 9:30 a.m.10:55 a.m.
Session on Number Theory, I
Room 443, Altgeld Hall

9:30 a.m.
The kfree divisor problem.
Anguel V. Koumtchev*, University of South Carolina
(9411133)

9:45 a.m.
Exponents of class groups of quadratic functions fields over finite fields.
David A Cardon*, Brigham Young University
(9411181)

10:00 a.m.
Fibonacci and Lucas numbers with only one distinctdigit.
Florian Luca*, Bielefeld University
(9411113)

10:45 a.m.
Automorphic Integrals of Positive Weight on Hecke Groups.
Abdulkadir Hassen, Dr*, Rowan University
(9411126)

Friday March 19, 1999, 11:00 a.m.11:50 a.m.
Invited Address
Analytic methods count for diophantine problems.
Room 314, Altgeld Hall
Trevor D Wooley*, University of Michigan
(94111292)

Friday March 19, 1999, 1:30 p.m.2:20 p.m.
Invited Address
Discrete analogs of the EgoroffDarboux metrics
Room 314, Altgeld Hall
Igor Krichever*, Columbia University

Friday March 19, 1999, 2:30 p.m.6:20 p.m.
Special Session on Elementary and Analytic Number Theory, II
Room 245, Altgeld Hall Organizers: Harold G. Diamond, University of Illinois, Urbana diamond@math.uiuc.edu
A. J. Hildebrand, University of Illinois, Urbana hildebr@math.uiuc.edu

2:30 p.m.
The BrunHooley sieve.
Kevin Ford, Univ. of South Carolina
Heini Halberstam*, Univ. of Illinois
(94111221)

3:00 p.m.
Primes in short arithmetic progressions with widely spaced moduli.
Peter D.T.A. Elliott*, University of Colorado at Boulder.
(9411188)

3:30 p.m.
Primes in short intervals.
Roger C Baker*, BYU
(9411191)

4:00 p.m.
On exponential sums with multiplicative coefficients.
Gennady Bachman*, University of Nevada, Las Vegas
(9411189)

4:30 p.m.
An Asymptotic Formula for the Number of Smooth Values of a Polynomial.
Greg Martin*, University of Toronto
(94111142)

5:00 p.m.
The Prime Element Theorem on Additive Formations.
WenBin Zhang*, University of the West Indies, Mona, Kingston 7, JAMAICA
(9411147)

5:30 p.m.
Exponential sums over multiplicative groups of residues.
Sergei Vladimirovich Konyagin*, Moscow State University
(94111161)

6:00 p.m.
Lattice points close to a smooth curve and distribution of squarefull numbers in short intervals.
Ognian T Trifonov*, University of South Carolina
(9411141)

Friday March 19, 1999, 2:30 p.m.4:50 p.m.
Special Session on Diophantine Equations, Inequalities and Related Arithmetic Problems, II
Room 143, Altgeld Hall Organizers: Michael Bennett, University of Illinois, Urbana mabennett@math.uiuc.edu
Trevor Wooley, University of Michigan wooley@math.lsa.umich.edu

2:30 p.m.
Some Powerful Determinants.
Alfred J van der Poorten*, Centre for Number Theory Research, Macquarie University, Sydney, Australia
(94111203)

3:00 p.m.
New Transcendence Results for Function Fields.
W. Dale Brownawell*, Penn State
Laurent Denis, University of Lille, France
(94111312)

3:30 p.m.
$S$unit equations in function fields via the $ABC$theorem.
Julia Mueller*, Fordham University
(94111280)

4:00 p.m.
Criteria of algebraic independence and approximation by hypersurfaces.
Damien Roy*, University of Ottawa
Michel Laurent, Institut de Math\'ematiques de Luminy, CNRS
(94111155)

4:30 p.m.
Norm Form Inequalities in Three Variables.
Jeffrey L Thunder*, Northern Illinois University Dept. of Mathematical Sciences
(94111260)

Friday March 19, 1999, 2:30 p.m.4:50 p.m.
Special Session on Integrable Equations, II
Room 147, Altgeld Hall Organizers: Igor Krichever, Columbia University krichev@cpw.math.columbia.edu
Kirill Vaninsky, Kansas State University vaninsky@math.ksu.edu

2:30 p.m.
Pole Dynamics for elliptic solutions of the KortewegdeVries equation.
Bernard Deconinck*, MSRI
(9413550)

3:00 p.m.
Higher Genus Whitham Hierarchies and Solutions to the WDVV equations.
Anton Dzhamay*, Department of Mathematics, Columbia University, New York, NY10027
(94135309)

3:30 p.m.
Hamiltonian Structure of Nonabelian Toda Lattice.
Michael Gekhtman*, University of Notre Dame
(9415848)

4:00 p.m.
Difference Equations in the Complex Domain: Extending the Painlev\'e Property.
Rod Halburd*, U Colorado
Mark Ablowitz, U. Colorado
Ben Herbst, U. Colorado
(9413568)

4:30 p.m.
Eigenvectors of the transfer matrix of solidonsolid models and vanishing conditions for solutions of qKZB equations.
Sasha Varchenko*, UNC
(9413559)

Friday March 19, 1999, 3:00 p.m.5:45 p.m.
Special Session on Recent Progress in Elementary Geometry, II
Room 445, Altgeld Hall Organizers: John E. Wetzel, University of IllinoisUrbana jwetzel@math.uiuc.edu
Clark Kimberling, University of Evansville ck6@evansville.edu

3:00 p.m.
Patterns on a spherical surface.
Magnus J. Wenninger*, none
(9415179)

4:00 p.m.
Variations of Uniform Polyhedra.
Vincent J. Matsko*, Associate Professor
(94151140)

4:30 p.m.
Constructing polytopes that have a manyfaceted projection.
Steven W. Knox*, none
(94152209)

5:00 p.m.
Cubing the Square: A Progress Report on the Rupert Problems.
Gregory Huber*, University of Arizona
(9415184)

Friday March 19, 1999, 3:00 p.m.6:25 p.m.
Special Session on Nonstandard Analysis, II
Room 269, Everitt Laboratory Organizers: C. Ward Henson, University of IllinoisUrbana henson@math.uiuc.edu
Peter Loeb, University of IllinoisUrbana loeb@math.uiuc.edu

3:00 p.m.
Some examples of stable Banach space structures.
C. Ward Henson*, University of Illinois
(94103320)

3:30 p.m.
A Geometric Characterization of Doubledual $n$Types.
Markus Pomper*, Department of Mathematics, University of Illinois, Urbana, Illinois
(94146237)

4:00 p.m.
Degree theory in nonstandard hulls of hyperfinite dimensional Banach Spaces.
Joao P Teixeira*, UWMadison, Dept of Mathematics
(94146308)

4:30 p.m.
Uniform Versions of Infinitary Properties in Banach Spaces.
Carlos E Ortiz*, Beaver College, Glenside, PA 190383295
(94103199)

5:00 p.m.
Nearisometries of C(K)spaces.
G. Beate Zimmer*, Mississippi University for Women
(9414628)

5:30 p.m.
Measures of noncompactness and essential spectra of positive operators.
Vladimir G. Troitsky*, University of Illinois
(9414737)

6:00 p.m.
Discrete approximation of operators and convergence of spectra.
Manfred P.H. Wolff*, AMS
(94147250)

Friday March 19, 1999, 3:00 p.m.5:50 p.m.
Special Session on Galois Representations, II
Room 141, Altgeld Hall Organizers: Nigel Boston, University of IllinoisUrbana boston@math.uiuc.edu
Michael Larsen, University of Missouri larsen@math.missouri.edu

3:00 p.m.
Deformations of threedimensional Galois representations.
Darrin M Doud*, University of Illinois at Urbana
(94111290)

3:30 p.m.
Discussion

4:15 p.m.
Conductors and Local Galois Representations.
Romyar T. Sharifi*, The University of Chicago
(94111299)

4:45 p.m.
Galois representations and unramified covers.
Georgios Pappas*, Michigan State University
(94111259)

5:30 p.m.
Congruences of Selmer groups.
Li Guo*, Rutgers UniversityNewark
(9411129)

Friday March 19, 1999, 3:00 p.m.5:20 p.m.
Special Session on Martingales and Analysis, II
Room 161, Everitt Laboratory Organizers: Joseph Max Rosenblatt, University of IllinoisUrbana jrsnbltt@math.uiuc.edu
Renming Song, University of IllinoisUrbana rsong@math.uiuc.edu
Richard B. Sowers, University of IllinoisUrbana rsowers@math.uiuc.edu

3:00 p.m.
Burkholder's biconcave functions and connections to quasiconvexity and rank one convexity .
Rodrigo Banuelos*, Purdue University
(9416097)

3:30 p.m.
Limsup Random Fractals.
Davar Khoshnevisan, University of Utah
Yuval Peres, University of California, Berkeley
Yimin Xiao*, University of Utah
(94160100)

4:00 p.m.
Banach Principle in the space of measurable operators.
Michael Sh. Goldstein, University of Toronto, Princeton University
Semyon N. Litvinov*, North Dakota State University
(9414656)

4:30 p.m.
Stochastic Volatility Modeling in Financial Mathematics.
Ronnie Sircar*, Assistant Professor
JeanPierre Fouque, Professor
George Papanicolaou, Professor
(94160116)

5:00 p.m.
A new stochastic PDE with measurevalued solutions.
Carl E. Mueller*, University of Rochester
(9416045)

Friday March 19, 1999, 3:00 p.m.5:50 p.m.
Special Session on Graph Theory, II
Room 243, Altgeld Hall Organizers: Douglas B. West, University of Illinois, Urbana west@math.uiuc.edu

3:00 p.m.
TwoFactors with exactly two cycles in Hamiltonian Graphs.
Michael S Jacobson*, University of Louisville
Ralph J Faudree, University of memphis
Ronald J Gould, Emory University
Linda Lesniak, Drew University
Akira Saito, Nihon University
(94105126)

3:30 p.m.
TwoFactors Containing Specified Edges.
Ralph Faudree*, University of Memphis
Ervin GyH{o}ri, Hungarian Academy of Sciences
Richard Schelp, University of Memphis
(9410571)

4:00 p.m.
Graph Connectivity After Path Removal.
Guantao Chen, Georgia State University
Ronald J. Gould*, Emory University
Xingxing Yu, Georgia Tech
(9410570)

4:30 p.m.
The computation of, and relationships among, graph invariants involving orientations (preliminary report).
Luis A Goddyn*, Simon Fraser University
(94105241)

5:00 p.m.
On Dependent Arcs in Acyclic Orientations and Cover Graphs.
Vojtech Rodl, Emory University
Lubos Thoma*, Carnegie Mellon University
(94105239)

5:30 p.m.
Nice graphs and their generalizations.
Alexandr V. Kostochka*, Institute of Mathematics of the Russian AS and the University of Memphis
(94105170)

Friday March 19, 1999, 3:00 p.m.5:50 p.m.
Special Session on Operator Spaces and Their Applications, II
Room 165, Everitt Laboratory Organizers: Gilles Pisier, Texas A & M gip@ccr.jussieu.fr
ZhongJin Ruan, University of IllinoisUrbana ruan@math.uiuc.edu

3:00 p.m.
Dual Injective Operator Spaces.
Edward G. Effros*, UCLA
ZhongJin Ruan, University of Illinois
(94146273)

3:30 p.m.
$p$norms of independent random matrices and noncommutative $\L_p$spaces.
Marius Junge*, University of Kiel
(9414685)

4:00 p.m.
Extendable local reflexivity.
William Johnson, Texas A&M University
Timur Oikhberg*, The University of Texas at Austin
(94146200)

4:30 p.m.
$C_1$ does not Banach embed in the predual of a finite von Neumann algebra.
U. Haagerup, Institute of Mathematics, University of Odense, Odense, Denmark
H. Rosenthal*, University of Texas at Austin
F. A. Sukochev, Flinders University
(94146128)

5:00 p.m.
Derivations from Von Neumann Algebras into Trace Class Operators.
Corran Webster*, Texas A&M University
Roger Smith, Texas A&M University
(94146339)

5:30 p.m.
Cohomology for finite index inclusions of factors.
Allan M. Sinclair, Univ. of Edinburgh
Roger R. Smith*, Texas A&M Univ.
(94146268)

Friday March 19, 1999, 3:00 p.m.4:45 p.m.
Special Session on Symplectic Geometry and Topology, I
Room 145, Altgeld Hall Organizers: Eugene M. Lerman, University of IllinoisUrbana lerman@math.uiuc.edu
Susan Tolman, University of IllinoisUrbana stolman@math.uiuc.edu

3:00 p.m.
Projections of Coadjoint Orbits and the HilbertMumford Criterion.
Arkady Berenstein, Cornell University
Reyer Sjamaar*, Cornell University
(94158129)

4:00 p.m.
Discussion

Friday March 19, 1999, 3:00 p.m.5:50 p.m.
Special Session on Holomorphic Vector Bundles and Complex Geometry, II
Room 343, Altgeld Hall Organizers: Maarten Bergvelt, University of IllinoisUrbana bergv@math.uiuc.edu
Steven Bradlow, University of IllinoisUrbana bradlow@vortex.math.uiuc.edu
John P. D'Angelo, University of IllinoisUrbana jpda@math.uiuc.edu
Lawrence Ein, University of IllinoisChicago

3:00 p.m.
Higgs Bundles and Holomorphic Forms.
Walter I. Seaman*, University of Iowa
(9415311)

3:30 p.m.
Twisted Higgs pairs and the fundamental group
Oscar GarciaPrada*, University of Madrid
S. Ramanan, Tata Institute
(94114160)

4:00 p.m.
Restriction of the Poincare bundle to Calabi Yau subvarieties.
Leticia Brambila Paz*, CIMAT
Indranil Biswas, TIFR
(94114144)

4:30 p.m.
Parabolic $G$bundles on ${\mathbb P}^1_{\mathbb C}$ and moduli spaces of polygons in Lie algebras of compact groups.
Jonathan A Poritz*, Georgetown University
(94132348)

5:00 p.m.
Cohomology of moduli spaces and representations of the mapping class group .
Hans U Boden*, Ohio State University
Andrew Nicas, McMaster University
(94114264)

5:30 p.m.
Eigenvalues of products of unitary matrices ,Parabolic vector bundles and quantum schubert calculus.
Prakash Belkale*, Dept. of Mathematics, University of Chicago
(94114255)

Friday March 19, 1999, 3:00 p.m.5:50 p.m.
Special Session on Combinatorial Designs, II
Room 241, Altgeld Hall Organizers: Ilene H. Morgan, University of MissouriRolla imorgan@umr.edu
Walter D. Wallis, Southern Illinois UniversityCarbondale wdwallis@math.siu.edu

3:00 p.m.
Arcs and curves over a finite field.
James W.P. Hirschfeld*, University of Sussex
Gabor Korchmaros, University of Basilicata
(94151109)

4:00 p.m.
From algebraicgeometric codes to limited bias and dependence.
J\"urgen Bierbrauer*, Michigan Technological University
(94105196)

4:30 p.m.
Intersection Numbers.
Vera Pless*, University of Illinois at Chicago
(94105182)

5:00 p.m.
Strongly regular graphs and designs with three intersection numbers.
Yury J Ionin, Central Michigan University
Mohan S Shrikhande*, Central Michigan University
(9410521)

5:30 p.m.
A new family of symmetric designs.
Yury J Ionin*, Central Michigan University
(9410514)

Friday March 19, 1999, 3:00 p.m.5:50 p.m.
Special Session on Lowdimensional Topology, II
Room 341, Altgeld Hall Organizers: Mark Brittenham, University of North Texas britten@unt.edu
Charles Delman, Eastern Illinois University cfcid@eiu.edu
Rachel Roberts, Washington University roberts@sulu.wustl.edu

3:00 p.m.
Abelian subgroup separability: Kleinian groups, closed hyperbolic $n$manifolds, Haken $3$manifolds.
Emily Hamilton*, Emory University
(94157222)

4:00 p.m.
Deformation problems in hyperbolic and Lorentzian geometry.
Kevin P. Scannell*, Saint Louis University
(94157229)

4:30 p.m.
Quantum Obstruction Theory.
Charles Frohman, University of Iowa
Joanna KaniaBartoszynska*, Boise State University
(94157234)

5:30 p.m.
Surface groups in some surgered 3manifolds.
Anneke Bart*, Saint Louis University
(94157133)

Friday March 19, 1999, 3:00 p.m.6:20 p.m.
Special Session on Commutative Algebra, II
Room 345, Altgeld Hall Organizers: Joseph Brennan, North Dakota State University brennan@plains.nodak.edu
Sankar Dutta, University of Illinois, Urbana dutta@math.uiuc.edu
Robert Fossum, University of Illinois, Urbana rfossum@uiuc.edu
Phillip Griffith, University of Illinois, Urbana griffith@math.uiuc.edu

3:00 p.m.
A class of sheaves satisfying Kodaira's vanishing theorem.
Donu Arapura*, Purdue Univ.
(94114213)

3:30 p.m.
Galois embedding for linear groups.
Shreeram S. Abhyankar*, Purdue University
(9411425)

4:00 p.m.
Normal Forms of Mappings.
Steven D Cutkosky*, University of Missouri Columbia
(94113338)

4:30 p.m.
Rank three vector bundles on Projective 4space.
Mohan N Kumar*, Wasington University in St. Louis
Chris Peterson, Washington University in St. Louis
Prabhakar A Rao, University of Missouri in St. Louis
(94114166)

5:00 p.m.
Bezout's theorem and CohenMacaulay modules.
Uwe Nagel*, Universit\"atGesamthochschule Paderborn
(94113214)

5:30 p.m.
Resolutions of Subsets of Finite Sets of Points in Projective Space.
Stephen P Diaz, Syracuse University
Anthony V Geramita, Queen's Univ./Univ. Genova
Juan C Migliore*, University of Notre Dame
(94113117)

6:00 p.m.
A local cohomology module with infinitely many associated prime ideals.
Anurag K Singh*, University of Illinois
(94113242)

Friday March 19, 1999, 3:00 p.m.6:20 p.m.
Special Session on Wavelet Analysis and Multiresolution Methods, II
Room 151, Everitt Laboratory Organizers: TianXiao He, Illinois Wesleyan University the@sun.iwu.edu

3:00 p.m.
The behaviour at zero of a class of bandlimited wavelets.
Guido L. Weiss*, Washington University
(9414236)

3:30 p.m.
On Positive Scaling Vectors.
David K Ruch, Sam Houston State University
Patrick J Van Fleet*, University of St. Thomas
(94141263)

4:00 p.m.
On some shift invariant multivariate integral operators, revisited.
George A. Anastassiou*, Universisty of Memphis
Sorin Gal, University of Oradea
(9414107)

4:30 p.m.
On multiwavelets on the interval.
Joseph D Lakey*, NMSU
Maria C Pereyra, UNM
(94142139)

5:00 p.m.
Constructing Orthogonal Nonseparable Wavelets.
Eugene Belogay*, Purdue University
Yang Wang, Georgia Institute of Technology
(94142124)

5:30 p.m.
On wavelets construction over triangulations.
Don Hong*, East Tennessee State University
Yuchun Anna Mu, East Tennessee State University
(94141219)

6:00 p.m.
Calculating the H\"older Exponent of Compactly Supported Wavelets.
Mohsen Maesumi*, Lamar University
(94126281)

Friday March 19, 1999, 3:00 p.m.5:55 p.m.
General Session
Room 443, Altgeld Hall

3:00 p.m.
Foliations with Kazhdan's Property T.
Michelle Y Penner*, Albion College
(94158282)

3:15 p.m.
Homotopy normal Lie subgroups.
Yasukuni Furukawa*, Aichi Univ of Education
(9415730)

3:30 p.m.
A Fixed Point Theorem for Weakly Inward Multivalued Contractions .
TeckCheong Lim*, George Mason University
(94147174)

3:45 p.m.
Yet another zeroone law for Gaussian processes.
Milan N. Luki\'c*, University of WisconsinOshkosh
(9416006)

4:00 p.m.
Maximal sets of hamilton cycles in complete multipartite graphs.
Mike Daven **, Auburn University
(94105254)

4:15 p.m.
Resolvable cycle decompositions of complete multipartite graphs.
Sarah Heuss **, Auburn University
(94105258)

4:30 p.m.
An Extremal Family of Graphs.
K. J. Roblee **, Auburn University
(94105272)

4:45 p.m.
On the Lattice of Relationships of Property $B_{d,i,j}$.
Michael C. Ackerman*, University of Memphis
(94105350)

5:00 p.m.
Apollonius' Tenth Problem Revisited.
Marina Gavrilova*, Dept. of Computer Science, The University of Calgary
Jon G Rokne, Dept. of Computer Science, The University of Calgary
(9415132)

5:15 p.m.
The Beginnings of Algebra and a Solution Result for a Famous Equation.
C. S. Felicitas, C.F.C.T.E., Inc
Sudhangshu B. Karmakar*, International Committee for ArabIsraeli Reconciliation
(94101108)

5:30 p.m.
A Continued Fraction of Ramanujan.
Robert L. Lamphere*, Elizabethtown Community College
(9413383)

5:45 p.m.
Embedding of incomplete latin squares of order $n$ in an idempotent latin squares of order $2n$.
Atif Abueida **, Auburn University
(94105275)

Friday March 19, 1999, 7:00 p.m.7:45 p.m.
Special Session on Recent Progress in Elementary Geometry, III
Room 445, Altgeld Hall Organizers: John E. Wetzel, University of IllinoisUrbana jwetzel@math.uiuc.edu
Clark Kimberling, University of Evansville ck6@evansville.edu

7:00 p.m.
A philosophy of maximally enlightening proof, illustrated in the case of Feuerbach's Theorem.
Douglas Hofstadter*, Indiana University
(94151358)

Friday March 19, 1999, 8:00 p.m.10:00 p.m.
Video Presentation
Room 314, Altgeld Hall
Organizers:
John Sullivan, University of IllinoisUrbana
Saturday March 20, 1999

Saturday March 20, 1999, 8:00 a.m.2:30 p.m.
Meeting Registration
Second Floor, Altgeld Hall

Saturday March 20, 1999, 8:00 a.m.2:30 p.m.
Exhibit and Book Sale
Library, Altgeld Hall

Saturday March 20, 1999, 8:30 a.m.10:55 a.m.
Special Session on Nonstandard Analysis, III
Room 269, Everitt Laboratory Organizers: C. Ward Henson, University of IllinoisUrbana henson@math.uiuc.edu
Peter Loeb, University of IllinoisUrbana loeb@math.uiuc.edu

8:30 a.m.
Nonstandard methods in ominimal structures.
H. Jerome Keisler*, University of Wisconsin
(94103321)

9:00 a.m.
Asymptotic Numbers, Asymptotic Functions and a Solution of the Problem of Multiplication of Schwartz Distributions.
Todor D. Todorov*, Cal Poly. SLO
(9414674)

9:30 a.m.
Hahn Field Representation of A. Robinson's Asymptotic Numbers.
Robert S. Wolf*, Cal Poly State University
Todor D. Todorov, Cal Poly State University
(9410342)

10:30 a.m.
NonCooperative Games on Hyperfinite Loeb Spaces.
Mohammed A Khan*, The Johns Hopkins University
Yeneng Sun, The National University of Singapore
(94190188)

Saturday March 20, 1999, 8:30 a.m.10:50 a.m.
Special Session on Elementary and Analytic Number Theory, III
Room 245, Altgeld Hall Organizers: Harold G. Diamond, University of Illinois, Urbana diamond@math.uiuc.edu
A. J. Hildebrand, University of Illinois, Urbana hildebr@math.uiuc.edu

8:30 a.m.
On an Irreducibility Theorem of A.~Schinzel Associated with Coverings of the Integers .
Michael Filaseta*, University of South Carolina
Kevin Ford, University of South Carolina
Sergei Konyagin, Moscow State University
(9411187)

9:00 a.m.
Congruence properties of the Stern sequence.
Bruce Reznick*, University of Illinois at UrbanaChampaign
(94111279)

9:30 a.m.
Wythoff pairs, semigroups, and recurrences.
Kenneth Stolarsky*, University of Illinois at UrbanaChampaign
(9411190)

10:00 a.m.
Expressing a positive integer as the sum of a given number of odd squares.
Paul T. Bateman*, University of Illinois at UrbanaChampaign
(9411180)

10:30 a.m.
The Distribution of Generalized qAdditive Functions Modulo 1.
Abigail Hoit*, University of Illinois at UrbanaChampaign
(94111341)

Saturday March 20, 1999, 8:30 a.m.10:50 a.m.
Special Session on Diophantine Equations, Inequalities and Related Arithmetic Problems, III
Room 143, Altgeld Hall Organizers: Michael Bennett, University of Illinois, Urbana mabennett@math.uiuc.edu
Trevor Wooley, University of Michigan wooley@math.lsa.umich.edu

8:30 a.m.
Systems of Quadratic Forms defined over the $p$adic Numbers.
David B Leep*, University of Kentucky
(94111284)

9:00 a.m.
Artin's Conjecture for Forms of Degree 7 and 11.
Michael P Knapp*, University of Michigan
(9411139)

9:30 a.m.
Rational Lines on Hypersurfaces.
Scott T. Parsell*, University of Michigan
(9411140)

10:00 a.m.
Values of Positive Definite Quadratic Forms.
D. Eric Freeman*, University of Michigan
(9411123)

10:30 a.m.
Recursion, Cubic Irrationals and Pelltype Equations.
Karl Dilcher*, Dalhousie University
(94111197)

Saturday March 20, 1999, 8:30 a.m.10:50 a.m.
Special Session on Integrable Equations, III
Room 147, Altgeld Hall Organizers: Igor Krichever, Columbia University krichev@cpw.math.columbia.edu
Kirill Vaninsky, Kansas State University vaninsky@math.ksu.edu

8:30 a.m.
Knot types and spectra for multiphase solutions of vortex filament flow.
Thomas A Ivey*, Ball State University
Annalisa Calini, College of Charleston
(94135195)

9:00 a.m.
The determiant represesentaions for correlation functions of quantum completely integrable models
Vladimir Korepin*, SUNY Stony Brook
(9413569)

9:30 a.m.
Quantum Field Theory on Algebraic Curves.
Leon A Takhtajan*, SUNY at Stony Brook
(9418118)

10:00 a.m.
symplectic staructures for the cubic Schrodinger equation in periodic and scattering case.
Kirill L. Vaninsky*, Kansas State
(94135342)

10:30 a.m.
Integration of the GaussCodazzi equations.
Vladimir E. Zakharov*, University of Arizona
(94151298)

Saturday March 20, 1999, 8:30 a.m.10:50 a.m.
Special Session on Operator Spaces and Their Applications, III
Room 165, Everitt Laboratory Organizers: Gilles Pisier, Texas A & M gip@ccr.jussieu.fr
ZhongJin Ruan, University of IllinoisUrbana ruan@math.uiuc.edu

8:30 a.m.
Quasidiagonality and Ktheory.
Marius Dadarlat*, Purdue University
(9414666)

9:00 a.m.
Ktheory of certain C*algebras associated with free products of cyclic groups.
Shuang Zhang*, University of Cincinnati
Wojciech Szymanski, The University of Newcastle
(94146352)

9:30 a.m.
Pure states on $\mathcal{O}_{d}$.
Ola Bratteli, University of Oslo
Palle E.T. Jorgensen*, The University of Iowa
Akitaka Kishimoto, University of Hokkaido
Reinhard F. Werner, Universit\"{a}t Braunschweig
(94146156)

10:00 a.m.
Some minimization problems for the free analogue of the Fisher information.
Nica M. Alexandru*, University of Waterloo
Dimitri Shlyakhtenko, UCLA
Speicher Roland, University of Heidelberg
(94146204)

10:30 a.m.
Unbounded operators affiliated to some II1 factors.
Florin G Radulescu*, Univ of Iowa
(94146346)

Saturday March 20, 1999, 8:30 a.m.10:50 a.m.
Special Session on Combinatorial Designs, III
Room 241, Altgeld Hall Organizers: Ilene H. Morgan, University of MissouriRolla imorgan@umr.edu
Walter D. Wallis, Southern Illinois UniversityCarbondale wdwallis@math.siu.edu

8:30 a.m.
On the construction of compound orthogonal arrays.
Samad Hedayat*, University of Illinois at Chicago
John Stufken, Iowa State University
(94105162)

9:30 a.m.
Constructing Starters with Holes.
Rolf Rees*, Memorial Univ. of Newfoundland
Nabil Shalaby, Memorial Univ. of Newfoundland
(94105291)

10:00 a.m.
On algebraic designs in association schemes.
Sung Y Song*, Iowa State University
(94105175)

10:30 a.m.
Constructing orthomorphisms of $GF(3)^+\times GF(q)^+$.
Anthony B Evans*, Wright State University
(94105215)

Saturday March 20, 1999, 8:30 a.m.10:50 a.m.
Special Session on Commutative Algebra, III
Room 345, Altgeld Hall Organizers: Joseph Brennan, North Dakota State University brennan@plains.nodak.edu
Sankar Dutta, University of Illinois, Urbana dutta@math.uiuc.edu
Robert Fossum, University of Illinois, Urbana rfossum@uiuc.edu
Phillip Griffith, University of Illinois, Urbana griffith@math.uiuc.edu

8:30 a.m.
Core of ideals and modules.
Alberto Corso*, Michigan State University
(94113324)

9:00 a.m.
Intersection multiplicities over Gorenstein rings.
Claudia M Miller*, University of Michigan
Anurag K Singh, University of IllinoisUrbana
(94113293)

9:30 a.m.
The Serre positivity conjecture and associated graded rings.
Paul C Roberts*, University of Utah
(94113235)

10:00 a.m.
Extremal Betti Numbers and Applications to monomial ideals.
Dave Bayer, Barnard College, Columbia University
Hara Charalambous*, University at Albany, SUNY
Sorin Popescu, Columbia University
(94113351)

10:30 a.m.
Toric Hilbert Schemes.
Irena V. Peeva*, Cornell University
Mike Stillman, Cornell University
(94113310)

Saturday March 20, 1999, 8:30 a.m.10:50 a.m.
Special Session on Wavelet Analysis and Multiresolution Methods, III
Room 151, Everitt Laboratory Organizers: TianXiao He, Illinois Wesleyan University the@sun.iwu.edu

8:30 a.m.
Squeezable orthogonal bases.
George C Donovan, Princeton University
Jeffrey S Geronimo, Georgia Institute of Technology,
Douglas P Hardin*, Vanderbilt University
(94141349)

9:00 a.m.
A robust construction of wavelets.
Thomas A Hogan*, Vanderbilt University
Douglas P Hardin, Vanderbilt University
(94139354)

9:30 a.m.
Timedomain methods for nonhomogeneous refinement.
Thomas B Dinsenbacher*, Vanderbilt University
Douglas P Hardin, Vanderbilt University
(94139257)

10:00 a.m.
Refinement Equations, Joint Spectral Radius and Wavelets.
DingXuan Zhou*, City University of Hong Kong
(94142111)

10:30 a.m.
A geometric approach to ergodic nonhomogeneous Markov chains.
Jianhong Shen*, Department of Math, UCLA
(9411554)

Saturday March 20, 1999, 8:45 a.m.10:50 a.m.
Special Session on Optimization Problems in Geometry, I
Room 447, Altgeld Hall Organizers: Robert Kusner, University of Massachusetts, Amherst kusner@math.umass.edu
John M. Sullivan, University of Illinois, Urbana jms@math.uiuc.edu

8:45 a.m.
A general variational method for crystalline triple junction motion.
Jean E. Taylor*, Rutgers University
(9415375)

9:30 a.m.
Discrete Minimal Surfaces on NonConforming Triangulations.
Konrad Polthier*, Technical University Berlin
(94153322)

10:15 a.m.
Conjectured minimal surfaces derived from Hamiltonian polyhedra in the cubic lattice.
Chaim GoodmanStrauss*, Univ. Arkansas
(94153169)

Saturday March 20, 1999, 9:00 a.m.10:50 a.m.
Special Session on Recent Progress in Elementary Geometry, IV
Room 445, Altgeld Hall Organizers: John E. Wetzel, University of IllinoisUrbana jwetzel@math.uiuc.edu
Clark Kimberling, University of Evansville ck6@evansville.edu

9:00 a.m.
Enumerative Triangle Geometry.
Clark H Kimberling*, University of Evansville
(9415172)

10:00 a.m.
On the AjimaMalfatti problem.
Peter Yff*, American University of Beirut
(94151208)

10:30 a.m.
Remarks on Triangles Inscribed in a Cubic Curve.
Lawrence S. Evans*, none
(94151118)

Saturday March 20, 1999, 9:00 a.m.10:50 a.m.
Special Session on Galois Representations, III
Room 141, Altgeld Hall Organizers: Nigel Boston, University of IllinoisUrbana boston@math.uiuc.edu
Michael Larsen, University of Missouri larsen@math.missouri.edu

8:30 a.m.
Discussion

9:00 a.m.
Twisted Galois Representations and Elliptic Curves .
Brian Conrad*, Harvard University
Siman Wong, Brown University
(94111244)

9:45 a.m.
Lifts of mod $p$ Galois representations with large image.
Yihsiang Liow*, University of Arizona
(94111300)

10:15 a.m.
Iwasawa Invariants for Elliptic Curves.
Ralph Greenberg*, University of Washington
(94111146)

Saturday March 20, 1999, 9:00 a.m.10:50 a.m.
Special Session on Martingales and Analysis, III
Room 161, Everitt Laboratory Organizers: Joseph Max Rosenblatt, University of IllinoisUrbana jrsnbltt@math.uiuc.edu
Renming Song, University of IllinoisUrbana rsong@math.uiuc.edu
Richard B. Sowers, University of IllinoisUrbana rsowers@math.uiuc.edu

9:00 a.m.
Wavelet theory for Probabilists.
Richard Gundy*, Rutgers University
(94160248)

9:30 a.m.
The B. Davis' Inequality for Orthogonal Martingales Under Differential Subordination.
Gang Wang*, DePaul University
Rodrigo Banuelos, Purdue University
(94160110)

10:00 a.m.
Dispersion under stochastic flows.
Michael C Cranston*, University of Rochester
Michael Scheutzow, Technische Universtiat
David Steinsalz, University of California
(94160106)

10:30 a.m.
From Boundary Crossing of Nonrandom Functions to First Passage Times of Random Processes .
Victor H de la Pena*, Columbia University
Ming Yang, Columbia University
(94160115)

Saturday March 20, 1999, 9:00 a.m.10:50 a.m.
Special Session on Graph Theory, III
Room 243, Altgeld Hall Organizers: Douglas B. West, University of Illinois, Urbana west@math.uiuc.edu

9:00 a.m.
A distance property of $2m$ points.
Andre E Kezdy*, University of Louisville
Mark J. Nielsen, University of Idaho
Hunter S. Snevily, University of Idaho
(94105226)

9:30 a.m.
Strengthening DistanceHereditary Graphs.
Terry A. McKee*, Wright State University
(9410510)

10:00 a.m.
Generalizing the Ramsey Problem through Diameter.
Dhruv Mubayi*, Georgia Tech
(94105125)

10:30 a.m.
EdgeMaximal TriangleFree PointDetermining Graphs.
Richard H. Schelp*, University of Memphis
Alex Scott, University College London
(94105105)

Saturday March 20, 1999, 9:00 a.m.10:45 a.m.
Special Session on Symplectic Geometry and Topology, II
Room 145, Altgeld Hall Organizers: Eugene M. Lerman, University of IllinoisUrbana lerman@math.uiuc.edu
Susan Tolman, University of IllinoisUrbana stolman@math.uiuc.edu

9:00 a.m.
Contact Homologies for Legendrian Tangles.
Lisa M Traynor*, Bryn Mawr College
(94158236)

10:00 a.m.
Blowing up on symplectic orbifolds.
Leonor Godinho*, SUNY at Stony Brook
(94151296)

Saturday March 20, 1999, 9:00 a.m.10:50 a.m.
Special Session on Holomorphic Vector Bundles and Complex Geometry, III
Room 343, Altgeld Hall Organizers: Maarten Bergvelt, University of IllinoisUrbana bergv@math.uiuc.edu
Steven Bradlow, University of IllinoisUrbana bradlow@vortex.math.uiuc.edu
John P. D'Angelo, University of IllinoisUrbana jpda@math.uiuc.edu
Lawrence Ein, University of IllinoisChicago

9:00 a.m.
BrillNoether theory for Holomorphic Vector Bundles on Riemann Surfaces.
Ivona Grzegorczyk*, University of Massachussetts Dartmouth
(94114270)

9:30 a.m.
BrillNoether reflections for moduli spaces of sheaves on K3 surfaces.
Eyal Markman*, University of Massachusetts
(94114302)

10:00 a.m.
Some new analysis on the $K$trivial extremal contractions of smooth threefolds: Preliminary report.
Kenji Matsuki*, Purdue University
Csilla Tamas, Purdue University
(94114163)

10:30 a.m.
Quotient and Moduli in Differential and Complex geometry.
Yi Hu*, UT
(94114333)

Saturday March 20, 1999, 9:00 a.m.10:50 a.m.
Special Session on Lowdimensional Topology, III
Room 341, Altgeld Hall Organizers: Mark Brittenham, University of North Texas britten@unt.edu
Charles Delman, Eastern Illinois University cfcid@eiu.edu
Rachel Roberts, Washington University roberts@sulu.wustl.edu

9:00 a.m.
The universal circle for foliations and transverse laminations.
Sergio R Fenley*, Washington University and Princeton University
(94157230)

10:00 a.m.
Palmeira's Theorem for Laminations.
David Gabai, Caltech
William H Kazez*, UGA
(94157317)

10:30 a.m.
Alexander and Thurston norms of fibered 3manifolds.
Nathan M. Dunfield*, University of Chicago
(94157134)

Saturday March 20, 1999, 9:30 a.m.10:55 a.m.
Session on Number Theory, II
Room 443, Altgeld Hall

9:30 a.m.
Multiplier systems of complex weight on the Hecke groups.
Paul C Pasles*, Saint Joseph's University
(9411127)

9:45 a.m.
A transformation on the space of rational functions.
Victor H Moll*, Tulane University
George Boros, University of New Orleans
Michael Joyce, Tulane University
(9411193)

10:15 a.m.
On Modified rRegular Partitions.
Neville Robbins*, San Francisco State Univ.
(94111138)

10:30 a.m.
Continued Fraction expansions of Pell Polynomials.
James G Mc Laughlin*, University of Illinois at Champaign
(94111334)

10:45 a.m.
Constructing regular polygons with your favorite number of sides.
Florian Luca*, Bielefeld University
(9411112)

Saturday March 20, 1999, 11:00 a.m.11:50 a.m.
Invited Address
Automorphic descent from GL(N) to classical groups
Room 314, Altgeld Hall
Stephen Rallis*, Ohio State University
(9411104)

Saturday March 20, 1999, 1:30 p.m.2:20 p.m.
Invited Address
Affine Grassmannians and the Bernstein center
Room 314, Altgeld Hall
Alexander Beilinson*, University of Chicago

Saturday March 20, 1999, 2:30 p.m.6:20 p.m.
Special Session on Elementary and Analytic Number Theory, IV
Room 245, Altgeld Hall Organizers: Harold G. Diamond, University of Illinois, Urbana diamond@math.uiuc.edu
A. J. Hildebrand, University of Illinois, Urbana hildebr@math.uiuc.edu

2:30 p.m.
Applications of number theory to cyclic codes and difference sets.
Ronald J. Evans*, UCSD
Henk Hollman, Philips Research Labs, Eindhoven
Christian Krattenthaler, University of Vienna
Qing Xiang, University of Delaware
(94111202)

3:00 p.m.
New results in comparative prime number theory.
Kevin Ford*, University of South Carolina
Richard H. Hudson, University of South Carolina
(94111122)

3:30 p.m.
Distribution of the RSA Generator.
John B Friedlander*, Univ. of Toronto
Daniel Lieman, Univ. of Missouri
Igor Shparlinski, Macquarie University
(94111301)

4:00 p.m.
The cubic moment of central values of automorphic Lfunctions.
Brian Conrey*, American Institute of Mathematics
Henryk Iwaniec, Rutgers University
(94111231)

4:30 p.m.
The geometry of badly approximable vectors.
Doug Hensley*, Texas A&M University
(94111223)

5:00 p.m.
On sums of four smooth squares.
Gergely Harcos*, Princeton University
(94111332)

5:30 p.m.
Sums of Nonnegative multiplicative functions over $y$smooth numbers.
Joung M Song*, University of Illinois at UrbanaChampaign
(9411173)

6:00 p.m.
Inverse problems for partition functions.
Yifan Yang*, University of Illinois
(94111233)

Saturday March 20, 1999, 2:30 p.m.4:50 p.m.
Special Session on Diophantine Equations, Inequalities and Related Arithmetic Problems, IV
Room 143, Altgeld Hall Organizers: Michael Bennett, University of Illinois, Urbana mabennett@math.uiuc.edu
Trevor Wooley, University of Michigan wooley@math.lsa.umich.edu

2:30 p.m.
Integer Apollonian Circle Packings.
Jeffrey C Lagarias*, A T & T Labs
(94111297)

3:00 p.m.
Higherorder Carmichael numbers.
Everett W. Howe*, Center for Communications Research, La Jolla
(94111192)

3:30 p.m.
A Diophantine problem arising in the use of Galois Descent .
Kristin E. Lauter*, University of Michigan
(94111201)

4:00 p.m.
Exponential sums with applications to codes over rings.
Judy L Walker*, University of Nebraska
(94111227)

4:30 p.m.
Schmidt's matrix normality conjecture.
Gavin Brown, Sydney University
William Moran, Flinders University
Andrew D Pollington*, BYU
(94111288)

Saturday March 20, 1999, 3:00 p.m.5:20 p.m.
Special Session on Recent Progress in Elementary Geometry, V
Room 445, Altgeld Hall Organizers: John E. Wetzel, University of IllinoisUrbana jwetzel@math.uiuc.edu
Clark Kimberling, University of Evansville ck6@evansville.edu

3:00 p.m.
The geometry of the cardiac cycle.
Dennis F. Cudia*, none
(9415243)

3:30 p.m.
The solution to the isoperimetric problem in 3dimensional Minkowski space.
Anthony C. Thompson*, Dalhousie University
(9415249)

4:00 p.m.
The smallest convex cover for triangles of perimeter two.
Zoltan F\"uredi, University of Illinois at UrbanaChampaign
John E. Wetzel*, University of Illinois at UrbanaChampaign
(94152207)

4:30 p.m.
Planar Packings and Mappings related to Minmax Problems.
SeonHong Kim*, University of Illinois
(94152217)

5:00 p.m.
Packing problems with congruent polygons.
Heiko Harborth*, TU Braunschweig, Germany
(94152211)

Saturday March 20, 1999, 3:00 p.m.5:55 p.m.
Special Session on Nonstandard Analysis, IV
Room 269, Everitt Laboratory Organizers: C. Ward Henson, University of IllinoisUrbana henson@math.uiuc.edu
Peter Loeb, University of IllinoisUrbana loeb@math.uiuc.edu

3:00 p.m.
Foundations of Infinitesimal Calculus.
Keith D Stroyan*, U of Iowa
(94199178)

3:30 p.m.
Verification of Numerical Software using Nonstandard Methods
Ian Sutherland, Bell Laboratories
Curtis Tuckey*, Motorola
(94168359)

4:00 p.m.
Nonstandard topologies with standard bases.
Nader Vakil*, Western Illinois University
(9414624)

4:30 p.m.
Some results in nonstandard topology .
Hermann Render*, University of Duisburg
(94154113)

5:00 p.m.
Combinatorial Formulations of Strong Saturation Principles.
Mauro DiNasso, University of Pisa
Karel Hrbacek*, City College of New York
(94103177)

5:30 p.m.
Nonstandard applications to problems from combinatorial number theory: a survey and update.
Steven C. Leth*, University of Northern Colorado
(94103327)

Saturday March 20, 1999, 3:00 p.m.5:50 p.m.
Special Session on Galois Representations, IV
Room 141, Altgeld Hall Organizers: Nigel Boston, University of IllinoisUrbana boston@math.uiuc.edu
Michael Larsen, University of Missouri larsen@math.missouri.edu

3:00 p.m.
Automorphic Induction and Leopoldt type Conjectures for GL(n).
Haruzo Hida*, UCLA
(94111145)

3:45 p.m.
On padic Galois representations associated to automorphic forms and applications.
Eric JP Urban*, UCLA
(94111261)

4:30 p.m.
Even Galois representations and group cohomology.
Avner D Ash*, Ohio State Univ.
(9411167)

5:15 p.m.
The Monodromy Pairing .
Robert F Coleman*, University of California
(94114205)

Saturday March 20, 1999, 3:00 p.m.4:50 p.m.
Special Session on Martingales and Analysis, IV
Room 161, Everitt Laboratory Organizers: Joseph Max Rosenblatt, University of IllinoisUrbana jrsnbltt@math.uiuc.edu
Renming Song, University of IllinoisUrbana rsong@math.uiuc.edu
Richard B. Sowers, University of IllinoisUrbana rsowers@math.uiuc.edu

3:00 p.m.
Sharp estimates for the spectral gap of biconvex domains Sharp estimates for the spectral gap of biconvex domains Sharp estimates for the spectral gap of doubly symmetric convex domains .
Rodrigo Banuelos, Purdue University
Burgess Davis*, Purdue University
(94100123)

3:30 p.m.
Local time flow related to skew Brownian motion.
Krzysztof Burdzy, University of Washington
ZhenQing Chen*, University of Washington
(94160107)

4:00 p.m.
Longtime Asymptotics of the stochastic parallel transport on hyperbolic space.
Robert O Bauer*, Georgia Institute of Technology
(94160131)

4:30 p.m.
Oscillation inequalities for singular integrals.
James T. Campbell, University of Memphis
Roger L. Jones*, DePaul University
Karin Reinhold, University at Albany
M\'at\'e Wierdl, University of Memphis
(9412665)

Saturday March 20, 1999, 3:00 p.m.5:50 p.m.
Special Session on Graph Theory, IV
Room 243, Altgeld Hall Organizers: Douglas B. West, University of Illinois, Urbana west@math.uiuc.edu

3:00 p.m.
Game Coloring Number .
H. A. Kierstead*, Arizona State University
(94105262)

3:30 p.m.
Dimension, Graph and Hypergraph Coloring.
William T. Trotter*, Arizona State University
Stefan Felsner, Freie Universit\"{a}t Berlin
(94105212)

4:00 p.m.
Testing Bipartiteness Efficiently.
Noga Alon, Tel Aviv University
Michael Krivelevich*, DIMACS Center, Rutgers University
(94105185)

4:30 p.m.
On the power of LBFS.
Derek G Corneil*, University of Toronto
(94105103)

5:00 p.m.
Improved Algorithms for Weakly Triangulated Graphs.
Ryan B Hayward, University of Lethbridge
R Sritharan, Indiana State University
Jeremy P. Spinrad*, Vanderbilt University
(94105132)

5:30 p.m.
Low Dilation embeddings of grids into hypercubes.
Zevi Miller*, Miami University
Dan Pritikin, Miami
(94105318)

Saturday March 20, 1999, 3:00 p.m.5:15 p.m.
Special Session on Algebraic KTheory (and the 5th Annual Great Lakes KTheory Conference), I
Room 347, Altgeld Hall Organizers: Daniel Grayson, University of IllinoisUrbana dan@math.uiuc.edu
Randy McCarthy, University of IllinoisUrbana randy@math.uiuc.edu

3:00 p.m.
$K(K)$.
Henri Gillet*, Department of Mathematics, Statistics, and Computer Science, University of Illinois at Chicago
(94119228)

4:30 p.m.
Ktheory and geometric Galois representations.
Wieslawa Niziol*, University of Utah
(94119313)

Saturday March 20, 1999, 3:00 p.m.5:20 p.m.
Special Session on Operator Spaces and Their Applications, IV
Room 165, Everitt Laboratory Organizers: Gilles Pisier, Texas A & M gip@ccr.jussieu.fr
ZhongJin Ruan, University of IllinoisUrbana ruan@math.uiuc.edu

3:00 p.m.
Some New Properties of Injective Envelopes.
Vern I Paulsen*, University of Houston
(94147278)

4:00 p.m.
Higher Order Hankel Forms, Factorization and Derivations.
William Cohn, Wayne State University
Sarah Ferguson*, Wayne State University
Richard Rochberg, Washington University
(94147224)

4:30 p.m.
When do the norm and the cbnorm of elementary operators coincide?
Robert J Archbold, University of Aberdeen
Martin Mathieu*, The Queen's University of Belfast
Douglas W.B. Somerset, University of Aberdeen
(9414622)

5:00 p.m.
Decomposition properties and an invariant for the free group *algebra.
Marius B. Stefan*, University of Iowa
(94146335)

Saturday March 20, 1999, 3:00 p.m.4:45 p.m.
Special Session on Symplectic Geometry and Topology, III
Room 145, Altgeld Hall Organizers: Eugene M. Lerman, University of IllinoisUrbana lerman@math.uiuc.edu
Susan Tolman, University of IllinoisUrbana stolman@math.uiuc.edu

3:00 p.m.
Gromov Invariants of $S^2$ bundles over 4manifolds.
Haydee Herrera*, SUNY at Stony Brook
(94153130)

4:00 p.m.
Cohomological splitting of symplectic fibrations.
Fran\c{c}ois Lalonde*, Universite du Quebec a Montreal
(94153328)

Saturday March 20, 1999, 3:00 p.m.5:50 p.m.
Special Session on Holomorphic Vector Bundles and Complex Geometry, IV
Room 343, Altgeld Hall Organizers: Maarten Bergvelt, University of IllinoisUrbana bergv@math.uiuc.edu
Steven Bradlow, University of IllinoisUrbana bradlow@vortex.math.uiuc.edu
John P. D'Angelo, University of IllinoisUrbana jpda@math.uiuc.edu
Lawrence Ein, University of IllinoisChicago

3:00 p.m.
Moduli of Sheaves on Surfaces and Action of the Oscillator Algebra.
Vladimir Baranovsky*, University of Chicago
(94114158)

3:30 p.m.
Global Quantum Cohomology of the Complex Projective Plane.
Jan Segert*, University of Missouri
(94153173)

4:00 p.m.
The Verlinde formula for moduli spaces of parabolic bundles.
Lisa C. Jeffrey*, University of Toronto
(94158179)

4:30 p.m.
Cohomology of line bundles over the moduli space of Gbundles over a smooth curve .
Constantin Teleman*, Stanford University
(94114305)

5:00 p.m.
Gbundles on Abelian surfaces, hyperkahler manifolds, and stringy Hodge numbers.
Jim A Bryan*, Tulane University
Ron Donagi, University of Pennsylvania
Conan Leung, University of Minnesota
(94114247)

5:30 p.m.
PU(2) monopoles and a conjecture of Moore, Marino, and Peradze.
Paul M. N. Feehan*, Institute for Advanced Study
Peter B Kronheimer, Harvard University
Thomas G. Leness, Florida International University
Tomasz S. Mrowka, Massachusetts Institute of Technology
(94158267)

Saturday March 20, 1999, 3:00 p.m.5:50 p.m.
Special Session on Combinatorial Designs, IV
Room 241, Altgeld Hall Organizers: Ilene H. Morgan, University of MissouriRolla imorgan@umr.edu
Walter D. Wallis, Southern Illinois UniversityCarbondale wdwallis@math.siu.edu

3:00 p.m.
Designing For Experimental Results That Arise Sequentially.
Deborah J Street*, UTS
(94105243)

4:00 p.m.
On a balanced incomplete splitblock design.
K. Ozawa, Gifu University, Japan
M. Jimbo*, Keio University, Japan
S. Kageyama, Hiroshima University
S. Mejza, Agricultural University of Paznan, Poland
(94105326)

4:30 p.m.
On cBhaskar Rao Designs.
Spencer P. Hurd, The Citadel
Dinesh G. Sarvate*, University of Charleston
(94105114)

5:00 p.m.
Cyclic Difference Packings.
Christopher N. Swanson*, University of Michigan  Ann Arbor
(9410535)

5:30 p.m.
Constructing balanced nested designs.
Ying Miao*, University of Tsukuba
(94105198)

Saturday March 20, 1999, 3:00 p.m.5:50 p.m.
Special Session on Optimization Problems in Geometry, II
Room 447, Altgeld Hall Organizers: Robert Kusner, University of Massachusetts, Amherst kusner@math.umass.edu
John M. Sullivan, University of Illinois, Urbana jms@math.uiuc.edu

3:00 p.m.
Instability of the wet cube cone soap film.
Kenneth A. Brakke*, Susquehanna University
(9414977)

3:45 p.m.
On the Free Boundary Variational Problem for Minimal Disks.
Ailana M. Fraser*, New York University
(94153276)

4:30 p.m.
The Willmore Energy of Quaternionic Line Bundles.
George I. Kamberov*, Washington University
(94158294)

5:15 p.m.
Connected sums of constant mean curvature surfaces in Euclidean 3space.
Frank Pacard*, ENS Cachan
(94153357)

Saturday March 20, 1999, 3:00 p.m.5:30 p.m.
Special Session on Lowdimensional Topology, IV
Room 341, Altgeld Hall Organizers: Mark Brittenham, University of North Texas britten@unt.edu
Charles Delman, Eastern Illinois University cfcid@eiu.edu
Rachel Roberts, Washington University roberts@sulu.wustl.edu

3:00 p.m.
Critical Shapes of Knots.
Gregory Buck, St. Anselm College
Eric Rawdon, Chatham College
Jonathan Simon*, University of Iowa
Joshua Tokle, University of Iowa
(94157277)

3:30 p.m.
Automorphisms of Handlebodies and Compression Bodies.
Ulrich Oertel*, Rutgers University
(94157153)

4:00 p.m.
Minimal Handle Presentations for 4manifolds.
Robert Craggs*, University of Illinois at UrbanaChampaign
(94157157)

4:30 p.m.
Surgery on knots which yield the same 3manifold.
John K. Osoinach, Jr.*, Eureka College
(94157345)

5:00 p.m.
Discussion

Saturday March 20, 1999, 3:00 p.m.6:50 p.m.
Special Session on Commutative Algebra, IV
Room 345, Altgeld Hall Organizers: Joseph Brennan, North Dakota State University brennan@plains.nodak.edu
Sankar Dutta, University of Illinois, Urbana dutta@math.uiuc.edu
Robert Fossum, University of Illinois, Urbana rfossum@uiuc.edu
Phillip Griffith, University of Illinois, Urbana griffith@math.uiuc.edu

3:00 p.m.
On the localization of tight closure.
Craig L. Huneke*, University of Kansas
(94113325)

3:30 p.m.
Some conditions for the equivalence of weak and strong Fregularity .
Ian M. Aberbach*, University of Missouri
(94113220)

4:00 p.m.
The tight integral closure of a set of ideals.
Melvin Hochster*, University of Michigan, Ann Arbor
(94113344)

4:30 p.m.
Normal ideals in regular rings.
Sam Huckaba*, Florida State University
Craig Huneke, University of Kansas
(94113165)

5:00 p.m.
Permanental ideals and Zarankiewicz problem.
Irena Swanson*, New Mexico State University
(94113252)

6:00 p.m.
A survey of obstruction theory for projective Modules of top rank.
M.Pavaman Murthy*, University of Chicago
(94113355)

6:30 p.m.
The LCM lattice.
Vesselin N. Gasharov*, Cornell University
Irena V. Peeva, Cornell University
Volkmar Welker, Technische Universit\"at Berlin
(94113307)

Saturday March 20, 1999, 3:00 p.m.6:50 p.m.
Special Session on Wavelet Analysis and Multiresolution Methods, IV
Room 151, Everitt Laboratory Organizers: TianXiao He, Illinois Wesleyan University the@sun.iwu.edu

3:00 p.m.
Sampling and stability.
Joseph M Rosenblatt*, Univerity of Illinois
(9414255)

3:30 p.m.
Wavelets and Multiwavelets for Signal Denoising.
Vasily Strela*, Dartmouth College
(94194343)

4:00 p.m.
Design of Rational Wavelet Filter.
Cheng Peng, School of Mathematical Sciences, Peking University, Beijing 100871,= P. R. China
Lizhong Peng*, School of Mathematical Sciences, Peking University, Beijing 100871,= P. R. China
(94142206)

4:30 p.m.
Best $m$term approximation of functions with bounded mixed derivative or difference by Haar wavelets.
Alexander V Andrianov*, University of South Carolina
(94142171)

5:00 p.m.
On periodic wavelets and frames.
Hrushikesh N Mhaskar*, Cal. St. Univ., L. A.
(94141135)

5:30 p.m.
Nonseparable Scaling Function Interpolation and Approximation.
EnBing Lin*, University of Toledo
(94141245)

6:00 p.m.
Applications of Wavelets in Industry: Simulations, Prototypes and Products.
Mei Kobayashi*, Tokyo Research Laboratory, IBM Japan, Ltd.
(9413378)

6:30 p.m.
Biorthogonal Wavelets with Certain Regularities.
TianXiao He*, Illinois Wesleyan University
(94141266)

Saturday March 20, 1999, 7:00 p.m.9:00 p.m.
Special Session on Recent Progress in Elementary Geometry, VI
Room 445, Altgeld Hall Organizers: John E. Wetzel, University of IllinoisUrbana jwetzel@math.uiuc.edu
Clark Kimberling, University of Evansville ck6@evansville.edu

7:00 p.m.
Convex illumination problems
Gregory Galperin*, Eastern Illinois University
(94151232)

8:00 p.m.
A Generalization of Post's Theorem.
John M Sullivan*, Univ. of Illinois
(94152143)

8:30 p.m.
Dynamic Geometry of Polygons.
Richard L. Hitt, Univ. of South Alabama
XinMin Zhang*, University of South Alabama
(9415109)
Sunday March 21, 1999

Sunday March 21, 1999, 8:30 a.m.12:20 p.m.
Special Session on Elementary and Analytic Number Theory, V
Room 245, Altgeld Hall Organizers: Harold G. Diamond, University of Illinois, Urbana diamond@math.uiuc.edu
A. J. Hildebrand, University of Illinois, Urbana hildebr@math.uiuc.edu

8:30 a.m.
Elementary Methods And Effective Results For Twin Primes.
Kent D. Boklan*, Baltimore, Maryland
(94111356)

9:00 a.m.
Nested Series and Iterated Integrals.
David M. Bradley*, University of Maine
(94111101)

9:30 a.m.
The partition function modulo N.
Scott D. Ahlgren*, Penn State University
(94111265)

10:00 a.m.
Gap Unification Theory: Comments on the Treatment of Partitions Via Their Gaps.
Dennis A. Eichhorn*, University of Illinois
(94111193)

10:30 a.m.
Computing 134 million coefficients of a series.
Dennis Eichhorn, U. of IL UrbanaChampaign
William F Galway*, U. of IL UrbanaChampaign
James A Sellers, Cedarville College
(94111340)

11:00 a.m.
New relations between the rank and the crank of partitions.
Frank G. Garvan*, University of Florida
(94111283)

11:30 a.m.
Algorithmic Solution of Thue Equations.
Robert F. Tichy*, Technical University Graz, Department of Mathematics
(9411164)

12:00 p.m.
Smooth Approximations to the Riemann Zeta Function.
Eugenio P. Balanzario*, Instituto de Matem\'aticas
(94111362)

Sunday March 21, 1999, 8:30 a.m.10:50 a.m.
Special Session on Diophantine Equations, Inequalities and Related Arithmetic Problems, V
Room 143, Altgeld Hall Organizers: Michael Bennett, University of Illinois, Urbana mabennett@math.uiuc.edu
Trevor Wooley, University of Michigan wooley@math.lsa.umich.edu

8:30 a.m.
On the central derivative of certain Hecke Lseries.
Tonghai Yang*, SUNY at Stony Brook
(94111361)

9:00 a.m.
Siegel modular forms, Hecke operators and theta series.
Lynne H Walling*, University of Colorado, Boulder
(94111186)

9:30 a.m.
Cantor sets and numbers with small partial quotients.
Stephen J. Astels*, University of Waterloo
(94111274)

10:00 a.m.
Equivariant compactifications of vector groups and heights.
Yuri Tschinkel*, Univ. of Illinois at Chicago
(94111154)

10:30 a.m.
The BrauerManin Obstruction for Curves.
Victor Scharaschkin*, University of Michigan
(9411138)

Sunday March 21, 1999, 8:45 a.m.10:50 a.m.
Special Session on Optimization Problems in Geometry, III
Room 447, Altgeld Hall Organizers: Robert Kusner, University of Massachusetts, Amherst kusner@math.umass.edu
John M. Sullivan, University of Illinois, Urbana jms@math.uiuc.edu

9:30 a.m.
Optimal Contact Structures.
Jason H. Cantarella*, University of Pennsylvania
(94151353)

10:15 a.m.
The optimal domains with leastperimeter and given area in surfaces of variable curvature .
Jianguo Cao*, University of Notre Dame
(9415382)

Sunday March 21, 1999, 9:00 a.m.10:50 a.m.
Special Session on Galois Representations, V
Room 141, Altgeld Hall Organizers: Nigel Boston, University of IllinoisUrbana boston@math.uiuc.edu
Michael Larsen, University of Missouri larsen@math.missouri.edu

9:00 a.m.
Finite subgroups of ${\rm GL}_n$ and applications to Galois representations.
Michael J Larsen, Indiana University
Richard Pink*, Mannheim University
(94111251)

9:45 a.m.
Galois Representations Ramified only at a Single Small Prime.
Sharon A Brueggeman*, Univ. of Illinois at UrbanaChampaign
(94111336)

10:15 a.m.
The unramified FontaineMazur conjecture.
Nigel Boston*, Univ of Illinois
(94111289)

Sunday March 21, 1999, 9:00 a.m.11:45 a.m.
Special Session on Symplectic Geometry and Topology, IV
Room 145, Altgeld Hall Organizers: Eugene M. Lerman, University of IllinoisUrbana lerman@math.uiuc.edu
Susan Tolman, University of IllinoisUrbana stolman@math.uiuc.edu

9:00 a.m.
localization for group valued equivariant cohomology .
Eckhard Meinrenken*, University of Toronto
(94153256)

10:00 a.m.
Singular Lagrangian fibrations, Preliminary report.
NaiChung Conan Leung, University of Minnesota
Margaret F Symington*, University of Texas at Austin
(94157246)

11:00 a.m.
Moduli spaces of flat connections on Riemann surfaces.
Lisa C. Jeffrey*, University of Toronto
(94158180)

Sunday March 21, 1999, 9:30 a.m.11:50 a.m.
Special Session on Graph Theory, V
Room 243, Altgeld Hall Organizers: Douglas B. West, University of Illinois, Urbana west@math.uiuc.edu

9:30 a.m.
Independent sets and spanning trees with many leaves.
Jerrold R. Griggs*, University of South Carolina
(94105159)

10:00 a.m.
Two simultaneous coloring problems.
Yue Y Zhao*, Benedict College
(9410586)

10:30 a.m.
Generalized list coloring of planar and outerplanar graphs.
Glenn G. Chappell*, Southeast Missouri State University
(94105286)

11:00 a.m.
The subchromatic number of a graph.
Chris M Hartman*, University of Alaska Fairbanks
(94105187)

11:30 a.m.
Collision and Percolation.
Peter Winkler*, Lucent Technologies
(9410546)

Sunday March 21, 1999, 9:30 a.m.12:45 p.m.
Special Session on Algebraic KTheory (and the 5th Annual Great Lakes KTheory Conference), II
Room 347, Altgeld Hall Organizers: Daniel Grayson, University of IllinoisUrbana dan@math.uiuc.edu
Randy McCarthy, University of IllinoisUrbana randy@math.uiuc.edu

9:30 a.m.
Mixed Tate Motives with Finite Coefficients and the Koszulity Conjecture.
Leonid Positselski*, Institute for Advanced Study
(94119120)

10:45 a.m.
The Chern character in equivariant Khomology.
Peter Schneider*, Westf\"alische WilhelmsUniversit\"at M\"unster, and University of Illinois at Chicago
(94119121)

12:00 p.m.
Nonarchimedean Arakelov theory.
Christophe Soul\'e*, CNRS and IHES
(94119119)
Inquiries: meet@ams.org

