
AMS Sectional Meeting Program by Day
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Inquiries: meet@ams.org
1999 Spring Western Section Meeting
Las Vegas, NV, April 1011, 1999
Meeting #942
Associate secretaries: Bernard Russo, AMS brusso@math.uci.edu
Sunday April 11, 1999

Sunday April 11, 1999, 8:00 a.m.12:00 p.m.
Meeting Registration
108 Lobby Area, Classroom Building Complex A

Sunday April 11, 1999, 8:00 a.m.10:50 a.m.
Special Session on Graph Theory
Room 213, Classroom Building Complex C Organizers: HungLin Fu, National ChiaoTung UniversityTaiwan hlfu@math.nctu.edu.tw
Chris A. Rodger, Auburn University rodgec1@mail.auburn.edu
Michelle Schultz, University of Nevada, Las Vegas schultzm@nevada.edu

8:00 a.m.
The structure of neighbor disconnected vertex transitive graphs.
Richard J. Goldstone*, Manhattan College
(9420517)

8:30 a.m.
Asymptotic Growth in Nonsymmetric Graphs.
Tomaz Pisanski, University of Ljubljana
Thomas W. Tucker*, Colgate University
(9420587)

9:00 a.m.
Nearautomorphisms of complete multipartite graphs
K. B. Reid*, California State University San Marcos
(94205105)

9:30 a.m.
Configurations and their Levi graphs.
Toma\{z} Pisanski*, University of Ljubljana
(94205138)

10:00 a.m.
Cycle Decompositions of $K_n$ and $K_nI$.
Heather D Gavlas*, Grand Valley State University
Brian Alspach, Simon Fraser University
(94205108)

10:30 a.m.
Decomposing complete graphs into cycles of fixed length.
Brian R Alspach*, Simon Fraser University
Mateja Sajna, Simon Fraser University
(9420574)

Sunday April 11, 1999, 8:00 a.m.10:50 a.m.
Special Session on Invariants, Distributions, Differential Operators and Harmonic Analysis
Room 217, Classroom Building Complex C Organizers: Ronald L. Lipsman, University of Maryland, College Park rll@math.umd.edu

8:00 a.m.
Root systems and special functions.
Siddhartha Sahi*, Professor
(9422231)

8:30 a.m.
The PaleyWiener theorem for a reductive symmetric space.
Erik P van den Ban*, Universiteit Utrecht, The Netherlands
Henrik Schlichtkrull, K\o benhavns Universitet, Denmark
(94222212)

9:00 a.m.
Schwartz space for the hypergeometric Fourier transform.
Patrick A Delorme*, Institut de Math\'ematiques de Luminy, 163 Avenue de Luminy, Case 907, 13288 Marseille cedex 09, France
(9422262)

9:30 a.m.
Faithful representations and extension of Weyl's construction.
JingSong Huang*, HKUST
(94222132)

10:00 a.m.
Generalized Huygens' Principle.
Chenbo Zhu*, National University of Singapore
(9422214)

10:30 a.m.
Explicit realizations of singular representations.
Alexander Dvorsky*, Rutgers University
Siddhartha Sahi, Rutgers University
(9422291)

Sunday April 11, 1999, 8:00 a.m.12:00 p.m.
Exhibit and Book Sale
108 Lobby Area, Classroom Building Complex A

Sunday April 11, 1999, 8:30 a.m.10:50 a.m.
Special Session on Geometric Group Theory
Room 212, Classroom Building Complex C Organizers: Eric M. Freden, Southern Utah University freden@suu.edu
Eric Lewis Swenson, Brigham Young University eric@math.byu.edu

8:30 a.m.
Suppose a group G splits as a product and that Groups acting on products of CAT(0) spaces.
Kim E Ruane*, Vanderbilt University
(94220236)

9:00 a.m.
Visual Decompositions of Coxeter Groups.
Michael L Mihalik*, Vanderbilt University
Steven T Tschantz, Vanderbilt University
(94220195)

9:30 a.m.
Test elements in hyperbolic groups.
Edward C. Turner*, University at Albany, Albany, NY
(9422057)

10:00 a.m.
On the Davis hyperbolic 4manifold.
John G Ratcliffe*, Vanderbilt University
Steven T Tschantz, Vanderbilt University
(9425779)

10:30 a.m.
Locally free Kleinian groups.
James W. Anderson*, University of Southampton and Rice University
(9425748)

Sunday April 11, 1999, 9:00 a.m.10:50 a.m.
Special Session on Control and Dynamics of Partial Differential Equations
Room 221, Classroom Building Complex C Organizers: Zhonghai Ding, University of NevadaLas Vegas dingz@nevada.edu

9:00 a.m.
Reduced Basis Methods for Computation of Open Loop and Feedback Controls in Partial Differential Equation Problems .
H. T. Banks, Dr.*, North Carolina State University
(94235196)

9:30 a.m.
Optimal Control Approaches to Engineering Design: Numerical and Mathematical Issues .
John A Burns*, Virginia Tech
(94293239)

10:00 a.m.
Controllability of Elastic Systems with Fluid Coupling.
Scott Hansen*, Iowa State University
(94293211)

10:30 a.m.
Transient Heat Transfer Behavior of OneDimensional Symmetric Thermoelectric SMA Actuators.
Zhonghai Ding*, University of NevadaLas Vegas
(94293179)

Sunday April 11, 1999, 9:00 a.m.10:50 a.m.
Special Session on Nonlinear PDEs  Methods and Applications
Room 222, Classroom Building Complex C Organizers: David Costa, University of NevadaLas Vegas costa@nevada.edu

9:00 a.m.
Morse index, Newton's method, and Bifurcation of nonlinear elliptic PDE.
John M Neuberger*, NAU
(9423588)

9:40 a.m.
Exact multiplicity of solutions of semilinear problem with jumping nonlinearities.
Junping Shi*, Tulane University
(9423585)

10:20 a.m.
ParameterEllipticity and Parabolicity for Mixedorder Systems and Applications.
Alexander Kozhevnikov*, Department of Mathematics, University of Haifa, 31905 ISRAEL
(9423593)

Sunday April 11, 1999, 9:00 a.m.11:00 a.m.
Special Session on Set Theory
Room 210, Classroom Building Complex C Organizers: Douglas Burke, University NevadaLas Vegas dburke@nevada.edu
Derrick DuBose, University NevadaLas Vegas dubose@nevada.edu

9:00 a.m.
A Survey of lowlevel L(R) combinatorics.
Steve C. Jackson*, University of North Texas
(94204185)

9:25 a.m.
{Covering Lemmas for $L({\Bbb R})$ and $K({\Bbb R})$}.
Daniel W Cunningham*, Buffalo State College
(94204103)

9:50 a.m.
Some Connections Between Descriptive Set Theory and Inner Model Theory.
Mitch Rudominer*, Florida International University
(94204176)

10:15 a.m.
The Consistency Strength of Blackwell Determinacy.
Benedikt L\"owe*, HumboldtUniversit\"at zu Berlin
(94203177)

10:40 a.m.
Jonsson Cardinals and their successors.
Philip D. Welch*, Kobe University, University of Bristol.
(94203248)

Sunday April 11, 1999, 9:00 a.m.10:50 a.m.
Special Session on Number Theory
Room 215, Classroom Building Complex C Organizers: Gennady Bachman, University of Nevada, Las Vegas bachman@nevada.edu
Richard A. Mollin, University of Calgary ramollin@math.ucalgary.ca
Peter J. Shiue, University of Nevada, Las Vegas shiue@nevada.edu

9:00 a.m.
Haar wavelets and irregularieites of distribution.
Andrew D Pollington*, BYU
(94211218)

9:30 a.m.
Binary Egyptian Fractions.
E. Croot, University of Georgia
D. Dobbs, University of Tennessee
J. B. Friedlander*, University of Toronto
A. Hetzel, University of Tennessee
F. Pappalardi, Universita Roma Tre
(9421158)

10:00 a.m.
Explicit Merit Factor Formulae For Fekete and Turyn Polynomials.
Peter Borwein*, Simon Fraser University
KwokKwong Stephen Choi, University of Hong Kong
(9421161)

10:30 a.m.
Rational triangles with rational Morley triangles.
Andrew Bremner*, Arizona State University
Joseph R. Goggins, British Rail
Michael J.T. Guy, Cambridge University
Richard K. Guy, University of Calgary
(9421152)

Sunday April 11, 1999, 9:00 a.m.10:50 a.m.
Special Session on Combinatorial Theory
Room 214, Classroom Building Complex C Organizers: Kequan Ding, University of Illinois, Urbana kding@math.uiuc.edu
Peter Shiue, University of Nevada, Las Vegas shiue@nevada.edu
YeongNan Yeh, Academia Sinica mayeh@ccvax.sinica.edu.tw

9:00 a.m.
Rental Harmony: Sperner's Lemma in Fair Division.
Francis Edward Su*, Harvey Mudd College
(9420525)

9:30 a.m.
On the Number of Successive Lefttoright Maxima in Random Permutations.
YeongNan Yeh*, Institute of Mathematics, Academia Sinica, Taiwan, R.O.C.
(94205123)

10:00 a.m.
Leftmodular Elements.
Larry S.C. Liu*, Department of Mathematics, Michigan State University
(94206124)

10:30 a.m.
Congruences for generalized Stirling numbers .
Sophie Frisch*, Technische Universit\"at Graz
Brian Ward, University of Chicago
(9420523)

Sunday April 11, 1999, 9:00 a.m.10:40 a.m.
Special Session on Analysis and Geometry
Room 218, Classroom Building Complex C Organizers: Peter Li, University of California, Irvine pli@math.uci.edu
SongYing Li, University of California, Irvine sli@math.uci.edu

9:00 a.m.
Mappings between balls.
Xiaojun Huang*, Rutgers University
(94232145)

9:25 a.m.
On singular diffusion equations.
Panagiota Daskalopoulos*, University of California, Irvine
(94235242)

9:55 a.m.
Bohr's power series theorem in the unit ball of \(\ell_p(\mathbf{C}^n)\).
Harold P Boas*, Texas A\&M University
(94232109)

10:20 a.m.
The dimension of an automorphism group.
James A. Gifford, The Australian National University
Alexander V. Isaev, The Australian National University
Steven G. Krantz*, Washington University in St. Louis
(94232246)

Sunday April 11, 1999, 9:00 a.m.10:50 a.m.
Special Session on Diophantine Problems
Room 216, Classroom Building Complex C Organizers: Arthur Baragar, University of Nevada, Las Vegas baragar@nevada.edu
Michael Bennett, University of Illinois mabennet@math.uiuc.edu

9:00 a.m.
Jacobians of Curves of Genus 1.
William G McCallum*, University of Arizona
(94211201)

9:30 a.m.
A 2dimensional continued fraction algorithm associated with interval exchanges and a theorem of Lagrange.
Sebastien Ferenczi, Universite de Tours
Charles Holton, University of California
Luca Q Zamboni*, University of North Texas
(9421176)

10:00 a.m.
Geometrically simple reduction types of CM abelian varieties.
Hui Zhu*, MSRI
(94211217)

10:30 a.m.
Geometric Nonvanishing.
Douglas Ulmer*, University of Arizona
(94211245)

Sunday April 11, 1999, 9:00 a.m.10:50 a.m.
Special Session on Symmetries of Knots and Threemanifolds
Room 219, Classroom Building Complex C Organizers: Swatee Naik, University of Nevada, Reno naik@unr.edu
Jozef H. Przytycki, George Washington University przytyck@math.gwu.edu

9:00 a.m.
Dehn surgeries on knots which yield lens spaces and genera of knots .
Hiroshi Goda*, University of California at Davis
Masakazu Teragaito, Hiroshima University
(94257106)

9:30 a.m.
Homology of cyclic covers of slice knots.
Karl A Bloch*, Indiana University
Davis F James, Indiana University
(9425721)

10:00 a.m.
Periodic Links and Representation Shifts.
Daniel S Silver*, Univ. of South Alabama
Susan G Williams, Univ. of South Alabama
(94257189)

10:30 a.m.
Classification of links up to surgery equivalence of second class.
Fan Ding, Peking University
XiaoSong Lin*, UC Riverside
(94257102)

Sunday April 11, 1999, 9:30 a.m.10:50 a.m.
Special Session on Numerical Analysis and Computational Mathematics
Room 223, Classroom Building Complex C Organizers: Jun Zhang, University of Kentucky jzhang@cs.uky.edu
Jennifer Zhao, University of Michigan, Dearborn xich@umich.edu

9:30 a.m.
Piecewise Linear Markov Approximations of Markov Operators on $L^1([0,1]^N)$.
Jiu Ding*, University of Southern Mississippi
Aihui Zhou, Academia Sinica
(9426511)

10:00 a.m.
Collocation Methods and Optimal Stopping Problems; an Application to the Pricing of Vanilla Options on One Risky Asset.
Michael D. Marcozzi*, University of Nevada, Las Vegas
(94265167)

10:30 a.m.
Mixed Elements for Linear Stokes Equations and Multigrid Solvers .
Shangyou Zhang*, University of Delaware
(94265222)

Sunday April 11, 1999, 11:10 a.m.12:00 p.m.
Invited Address
Tilings, quasicrystals and continuous symmetry.
Auditorium A108, Classroom Building Complex A
Lorenzo A Sadun*, University of Texas at Austin
(9425275)

Sunday April 11, 1999, 1:30 p.m.2:10 p.m.
Invited Address
From Topological Quantum Field Theory to FaultTolerant Quantum Computation .
Auditorium A108, Classroom Building Complex A
Greg Kuperberg*, UC Davis
(94268234)

Sunday April 11, 1999, 3:00 p.m.4:50 p.m.
Special Session on Graph Theory
Room 213, Classroom Building Complex C Organizers: HungLin Fu, National ChiaoTung UniversityTaiwan hlfu@math.nctu.edu.tw
Chris A. Rodger, Auburn University rodgec1@mail.auburn.edu
Michelle Schultz, University of Nevada, Las Vegas schultzm@nevada.edu

3:00 p.m.
Chords of longest circuits.
X. C. Li, Math. Dept., West Virginia University
C.  Q. Zhang*, Math. Dept. West Virginia Univ.
(94205121)

3:30 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
(9420542)

4:00 p.m.
Maximal Sets of Hamilton Cycles.
Chris A Rodger*, Auburn University
Saad ElZanati, Illinois State University
Darryn E Bryant, University of Queensland
(9420566)

4:30 p.m.
Edge critical bipartite graphs without 4cycles.
Darryn E. Bryant, The University of Queensland
HungLin Fu*, National Chiao Tung University
(9420582)

Sunday April 11, 1999, 3:00 p.m.5:30 p.m.
Special Session on Nonlinear PDEs  Methods and Applications
Room 222, Classroom Building Complex C Organizers: David Costa, University of NevadaLas Vegas costa@nevada.edu

3:00 p.m.
A priori growth estimates for Fuchsian solutions satisfying systems of algebraic PDE.
Sh. Strelitz*, University of Haifa
(94235240)

3:40 p.m.
A Periodic boundary value problem for a generalized 2D GinzburgLandau equation.
Charles Bu*, Wellesley College
(94235140)

4:20 p.m.
Constant Principal Strain Deformations.
Martin Chuaqui, P. Universidad Catolica de Chile
Julian Gevirtz*, Indiana Acad., Ball State Univ, P. Univ. Catolica de Chile
(9423556)

5:00 p.m.
Response of a FiniteDepth Saturated Soil to a SinglePulse Disturbance.
Brian T Hayes*, Stevens Institute of Technology
(94235143)

Sunday April 11, 1999, 3:00 p.m.5:20 p.m.
Special Session on Set Theory
Room 210, Classroom Building Complex C Organizers: Douglas Burke, University NevadaLas Vegas dburke@nevada.edu
Derrick DuBose, University NevadaLas Vegas dubose@nevada.edu

3:00 p.m.
Tightness and Internal Approachability.
Matthew D Foreman*, UC Irvine
(94204238)

3:30 p.m.
Robust and stunted trees of height and cardinality~$\omega_1$.
Mack Stanley*, San Jose State Univ.
(94204172)

4:00 p.m.
Simple complete Boolean algebras.
Thomas Jech*, Penn State University
(94204133)

4:30 p.m.
Gap forcing: generalizing the LevySolovay theorem.
Joel D Hamkins*, City University of New York
(9420463)

5:00 p.m.
Set Theory as a Branch of Mathematics.
Noa Goldring*, Los Angeles, California
(94204226)

Sunday April 11, 1999, 3:00 p.m.5:50 p.m.
Special Session on Geometric Group Theory
Room 212, Classroom Building Complex C Organizers: Eric M. Freden, Southern Utah University freden@suu.edu
Eric Lewis Swenson, Brigham Young University eric@math.byu.edu

3:00 p.m.
The splitting obstruction for finitely generated groups.
Graham A. Niblo*, University of Southampton
(9422047)

3:30 p.m.
Grushko's theorem for surfacelike complexes.
John R Stallings*, University of California, Berkeley
(9422090)

4:00 p.m.
The Burau representation is not faithful for n=5.
Stephen J Bigelow*, University of California at Berkeley
(94220165)

4:30 p.m.
Metrics for generalizations of Thompson's group $F$.
Jos\'{e} Burillo, Tufts University
Sean Cleary*, California State University, Fresno
Melanie Stein, Trinity College
(9422018)

5:00 p.m.
Separating quasiconvex subgroups of graph groups.
Tim Hsu*, Pomona College
Daniel T. Wise, Cornell University
(94220134)

5:30 p.m.
Tameness and the geodesic cores of subgroups.
Rita Gitik*, A&H consultants
(94220144)

Sunday April 11, 1999, 3:00 p.m.4:35 p.m.
Special Session on Analysis and Geometry
Room 218, Classroom Building Complex C Organizers: Peter Li, University of California, Irvine pli@math.uci.edu
SongYing Li, University of California, Irvine sli@math.uci.edu

3:00 p.m.
Geometry of quasicircles and quasiconformal mappings.
Shanshuang Yang*, Emory University
(9423019)

3:25 p.m.
$Q_p$ spaces on Riemann surfaces.
Rauno Aulaskari*, University of Joensuu
(9423092)

3:50 p.m.
An optimal comparison result on heat kernels of conformal Laplacian and applications.
Qi S. Zhang*, University of Memphis
(9423570)

4:15 p.m.
Hodge theory and cohomology with compact supports.
Ed Bueler*, University of Alaska, Fairbanks
Igor Prokhorenkov, Texas Christian University
(9425864)

Sunday April 11, 1999, 3:00 p.m.4:50 p.m.
Special Session on Diophantine Problems
Room 216, Classroom Building Complex C Organizers: Arthur Baragar, University of Nevada, Las Vegas baragar@nevada.edu
Michael Bennett, University of Illinois mabennet@math.uiuc.edu

3:00 p.m.
Bounds on exponential sums and applications to cryptography.
Daniel B. Lieman*, University of Missouri
(94211213)

3:30 p.m.
Arithemetic Analogs of Differential Modular Forms.
Christine Hurlburt*, University of New Mexico
(94214186)

4:00 p.m.
Plane quartics with Jacobians isomorphic to a hyperelliptic Jacobian.
Everett W Howe*, Center for Communications Research
(94214155)

4:30 p.m.
A slightly weaker conjecture implies the $abc$ conjecture.
Paul Vojta*, University of California, Berkeley
(94211230)

Sunday April 11, 1999, 3:00 p.m.5:50 p.m.
Special Session on Invariants, Distributions, Differential Operators and Harmonic Analysis
Room 217, Classroom Building Complex C Organizers: Ronald L. Lipsman, University of Maryland, College Park rll@math.umd.edu

3:00 p.m.
Hermite functions and indefinite orthogonal groups.
Gerald B. Folland*, University of Washington
(9423339)

3:30 p.m.
Fine structure for Bessel functions on complex matrix space.
Kenneth I. Gross*, University of Vermont
Donald St.P. Richards, University of Virginia
(94243187)

4:00 p.m.
On the construction of analytic models for certain representations of the general linear group.
Ray A Kunze*, The University of Georgia
(94242174)

4:30 p.m.
Heat Kernels of Hermitian Symmetric Spaces.
Hongming Ding*, St. Louis University
(9423550)

5:00 p.m.
Generalized Watson Transforms.
Qifu Zheng*, The College of New Jersey
(94222148)

5:30 p.m.
An integral transform and unitary highest weight modules.
John D Lorch*, Ball State University
(9422241)

Sunday April 11, 1999, 3:00 p.m.4:20 p.m.
Special Session on Symmetries of Knots and Threemanifolds
Room 219, Classroom Building Complex C Organizers: Swatee Naik, University of Nevada, Reno naik@unr.edu
Jozef H. Przytycki, George Washington University przytyck@math.gwu.edu

3:00 p.m.
Translating the involutory Kuperberg invariant into the surgery framework, and relating it to certain symmetries of 3manifolds.
Fernando J. O. Souza*, University of Illinois at Chicago
Louis H. Kauffman, University of Illinois at Chicago
David E. Radford, University of Illinois at Chicago
(94257232)

3:30 p.m.
Ordering groups of Pure Braids and Hyperplane Arrangements.
Djun M. Kim*, The University of British Columbia
Dale P. Rolfsen, The University of British Columbia
(94206204)

4:00 p.m.
Seifert fibered surgeries on hyperbolic knots.
Cameron McA. Gordon*, University of Texas at Austin
John Luecke, University of Texas at Austin
(94257249)
Inquiries: meet@ams.org

