AMS Sectional Meeting Full Program
Current as of Tuesday, April 12, 2005 15:10:32
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Deadlines 
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Inquiries: meet@ams.org
2003 Joint Central and Western Section Meeting
Boulder, CO, October 24, 2003
Meeting #989
Associate secretaries: Susan J Friedlander, AMS susan@math.northwestern.edu
Michel L Lapidus, AMS lapidus@math.ucr.edu, lapidus@mathserv.ucr.edu
Thursday October 2, 2003

Thursday October 2, 2003, 8:00 a.m.4:00 p.m.
Meeting Registration
Lobby, Mathematics Building

Thursday October 2, 2003, 8:00 a.m.4:00 p.m.
Exhibit and Book Sale
Lobby, Mathematics Building

Thursday October 2, 2003, 9:00 a.m.10:50 a.m.
Special Session on Algebras, Lattices and Varieties, I
Room 151 (1st Floor), Engineering Center (ECCR) Organizers: Keith A. Kearnes, University of Colorado, Boulder kearnes@euclid.colorado.edu
Agnes Szendrei, Bolyai Institute szendrei@math.uszeged.hu
Walter Taylor, University of Colorado, Boulder wtaylor@euclid.colorado.edu

9:00 a.m.
Issues and images in congruence meetsemidistributivity.
Kirby A Baker*, UCLA
(9890884)

9:30 a.m.
The finite basis problem for finitely generated quasivarieties.
Ralph N McKenzie*, Vanderbilt University
(98908140)

10:30 a.m.
Endoprimal abelian groups.
R G\"obel, Universit\"at DuisburgEssen, Germany
K Kaarli, University of Tartu, Estonia
L M\'arki*, R\'enyi Institute, Hungary
S L Wallutis, Universit\"at DuisburgEssen, Germany
(98920116)

Thursday October 2, 2003, 9:00 a.m.10:50 a.m.
Special Session on Geometric Methods in Partial Differential Equations, I
Room 1B 40 (Basement), Engineering Center (ECCR) Organizers: Jeanne N. Clelland, University of Colorado, Boulder Jeanne.Clelland@colorado.edu
George R. Wilkins, University of Hawaii grw@math.hawaii.edu

9:00 a.m.
Nonclassical Potential Solutions of Partial Differential Equations.
George W. Bluman*, University of British Columbia
Zhenya Yan, University of British Columbia
(98935139)

10:00 a.m.
Second order families of associative submanifolds of ${\mathbb R}^7$.
Robert L Bryant*, Duke University
(9895341)

Thursday October 2, 2003, 9:00 a.m.10:50 a.m.
Special Session on Groupoids in Analysis and Geometry, I
Room 133 (1st Floor), Engineering Center (ECCR) Organizers: Lawrence Baggett, University of Colorado, Boulder baggett@euclid.colorado.edu
Jerry Kaminker, Indiana UniversityPurdue University Indianapolis kaminker@math.iupui.edu
Judith Packer, University of Colorado, Boulder packer@euclid.colorado.edu

9:00 a.m.
A KKtheoretic approach to the groupoid index theorem.
Alan L Paterson*, University of Mississippi
(9891933)

9:30 a.m.
Extensions of Group Representations.
Astrid an Huef, University of New South Wales
S Kaliszewski*, Arizona State University
Iain Raeburn, University of Newcastle
(98947187)

10:00 a.m.
kGraphs, Coverings, and Coactions.
David Pask, University of Newcastle
John Quigg*, Arizona State University
Iain Raeburn, University of Newcastle
(98946177)

10:30 a.m.
Lifting groups of automorphisms from the Ktheory of a UCTKirchberg algebra.
Jack Spielberg*, Arizona State University
(98946181)

Thursday October 2, 2003, 9:00 a.m.10:45 a.m.
Special Session on Noncommutative Geometry and Geometric Analysis, I
Room 139 (1st Floor), Engineering Center (ECCR) Organizers: Carla Farsi, University of Colorado farsi@euclid.colorado.edu
Alexander Gorokhovsky, University of Colorado gorokhov@euclid.colorado.edu
Siye Wu, University of Colorado siye.wu@colorado.edu

9:00 a.m.
On Positive Scalar Curvature.
Paul Frank Baum*, Penn State University
(9895343)

10:00 a.m.
Strings, Fractal Membranes and Noncommmutative Spacetimes.
Michel L. Lapidus*, University of California, Riverside
(98958141)

Thursday October 2, 2003, 9:00 a.m.10:50 a.m.
Special Session on Finite Geometries, I
Room 118 (1st Floor), Engineering Center (ECCR) Organizers: Stanley E. Payne, University of Colorad Denver spayne@math.cudenver.edu
Robert Allen Liebler, Colorado State University liebler@math.colostate.edu

9:00 a.m.
Multiple Nests.
Norman L. Johnson*, University of Iowa
(9895167)

9:30 a.m.
Sharply and Super Sharply Focused Arcs in Desarguesian Planes.
William E Cherowitzo*, University of Colorado at Denver
Leanne D Holder, St. Mary's University
(98951197)

10:00 a.m.
Arcs and Ovals from Abelian Groups.
Dina Ghinelli*, Università di Roma "La Sapienza"
Dieter Jungnickel, Universitaet Augsburg
Marialuisa de Resmini, Università di Roma La Sapienza
(98952188)

10:30 a.m.
On $(2n,2,2n,n)$ relative difference sets in nonsolvable groups.
Yutaka Hiramine*, Department of Mathematics, Faculty of Education, Kumamoto University
(9890565)

Thursday October 2, 2003, 9:00 a.m.10:50 a.m.
Special Session on Nonlinear Waves, I
Room 1B 55 (Basement), Engineering Center (ECCR) Organizers: Bernard Deconinck, Colorado State University deconinc@math.colostate.edu
Harvey Segur, University of Colorado Boulder Harvey.Segur@colorado.edu

9:00 a.m.
Nonlinear fluid convection: from solitons to turbulence.
Darryl D. Holm*, Los Alamos National Laboratory and Mathematics Department, Imperial College, London
(98935203)

9:30 a.m.
The modulation theory for the CamassaHolm equation.
T. Grava*, SISSA, Italy
S. Abenda, University of Bologna, Italy
(98935217)

10:00 a.m.
Extremal eigenvalue problems, nonlinear waves, and the KuramotoSivashinky equation.
J. C. Bronski*, Univerity of Illinios, UrbanaChampaign
(98935219)

10:30 a.m.
Fermi surfaces and dynamical systems.
S. P. Novikov*, University of Maryland and Landau Institute
(98935220)

Thursday October 2, 2003, 9:00 a.m.11:00 a.m.
Special Session on Computational and Mathematical Biology, I
Room 108 (1st Floor), Engineering Center (ECCR) Organizers: Harvey J. Greenberg, University of Colorado at Denver hgreenbe@carbon.cudenver.edu

9:00 a.m.
On Sausages, Steiner Trees, Proteins and Rho.
J. MacGregor Smith*, University of Massachusetts
(98992109)

10:00 a.m.
Haplotyping and Minimum Diversity Graphs.
Allen G Holder*, Trinity University Mathematics
Courtney Davis, University of Utah
(9899073)

10:30 a.m.
Discussion

Thursday October 2, 2003, 11:10 a.m.12:00 p.m.
Invited Address
Deviation of ergodic averages for rational polygonal billiards.
Room 265 (2nd Floor), Engineering Center (ECCR)
Giovanni Forni*, Northwestern University

Thursday October 2, 2003, 1:30 p.m.2:20 p.m.
Invited Address
Random matrix theory and the Riemann zetafunction
Room 265 (2nd Floor), Engineering Center (ECCR)
J. Brian Conrey*, American Institute of Mathematics

Thursday October 2, 2003, 2:30 p.m.4:50 p.m.
Special Session on Algebras, Lattices and Varieties, II
Room 151 (1st Floor), Engineering Center (ECCR) Organizers: Keith A. Kearnes, University of Colorado, Boulder kearnes@euclid.colorado.edu
Agnes Szendrei, Bolyai Institute szendrei@math.uszeged.hu
Walter Taylor, University of Colorado, Boulder wtaylor@euclid.colorado.edu

2:30 p.m.
Concepts of universal algebras in logic.
Chihiro Oshima*, Kawasaki,Japan
(9890669)

3:00 p.m.
Rigid homogeneous structures.
W. Charles Holland*, Bowling Green State University
(9890664)

4:00 p.m.
Simple Moufang loops: recent results and open problems.
Petr Vojt\v{e}chovsk\'y*, University of Denver
(9892049)

4:30 p.m.
Term finite principal congruences.
Ross Willard*, University of Waterloo
(98908240)

Thursday October 2, 2003, 2:30 p.m.4:50 p.m.
Special Session on Geometric Methods in Partial Differential Equations, II
Room 1B 40 (Basement), Engineering Center (ECCR) Organizers: Jeanne N. Clelland, University of Colorado, Boulder Jeanne.Clelland@colorado.edu
George R. Wilkins, University of Hawaii grw@math.hawaii.edu

2:30 p.m.
Second Order Families of Special Lagrangian 4folds in ${\Bbb C}^4$.
L. Marianty Ionel*, McMaster University
(98953160)

3:30 p.m.
Symbolic computation on a jet bundle. Moving coframes.
Irina A Kogan*, North Carolina State University
(98953211)

4:00 p.m.
The Path Geometry of Riemannian and Finsler geodesics on a Surface.
Christopher Catone*, University of Colorado
(98953135)

4:30 p.m.
Energy Critical Curves in the Path Space of the Euclidean Line.
Marek Kossowski, University of South Carolina
George R Wilkens*, University of Hawaii at Manoa
(98958266)

Thursday October 2, 2003, 2:30 p.m.4:50 p.m.
Special Session on Groupoids in Analysis and Geometry, II
Room 133 (1st Floor), Engineering Center (ECCR) Organizers: Lawrence Baggett, University of Colorado, Boulder baggett@euclid.colorado.edu
Jerry Kaminker, Indiana UniversityPurdue University Indianapolis kaminker@math.iupui.edu
Judith Packer, University of Colorado, Boulder packer@euclid.colorado.edu

2:30 p.m.
A loop groupoid action on systems of filters for nonMRA frame wavelets.
Lawrence Baggett, University of Colorado
Palle Jorgensen, University of Iowa
Kathy Merrill*, Colorado College
Judith Packer, University of Colorado
(98943196)

3:00 p.m.
Local index theory over foliation groupoids.
Alexander Gorokhovsky*, University of Colorado
John Lott, University of Michigan
(98958215)

3:30 p.m.
C*algebras associated with interval maps.
Valentin Deaconu, Univ. of Nevada, Reno
Fred Shultz*, Wellesley College
(98946180)

4:00 p.m.
C*algebras associated with topological relations.
Berndt A. Brenken*, University of Calgary
(98946134)

4:30 p.m.
History of the Fourier Stieltjes Algebra of a Groupoid.
Martin E. Walter*, University of Colorado
(98901270)

Thursday October 2, 2003, 2:30 p.m.4:55 p.m.
Special Session on Noncommutative Geometry and Geometric Analysis, II
Room 139 (1st Floor), Engineering Center (ECCR) Organizers: Carla Farsi, University of Colorado farsi@euclid.colorado.edu
Alexander Gorokhovsky, University of Colorado gorokhov@euclid.colorado.edu
Siye Wu, University of Colorado siye.wu@colorado.edu

2:30 p.m.
Asymptotically flat Ktheory.
Jerome Kaminker*, IUPUI
(98919209)

3:30 p.m.
Fredholm indices of banddominated operators.
Vladimir Rabinovich, IPN, Mexico
Steffen Roch, Univ. Darmstadt, Germany
John Roe*, Penn State
(9894777)

4:30 p.m.
A sectional characterization of noncommutative CWcomplexes.
Erich A McAlister*, University of Colorado
(98946173)

Thursday October 2, 2003, 2:30 p.m.3:50 p.m.
Special Session on Structured Population and Epidemic Models:Periodicity, Chaos, and Extinction, I
Room 116 (1st Floor), Engineering Center (ECCR) Organizers: Linda J. S. Allen, Texas Tech University lallen@math.ttu.edu
Sophia R.J. Jang, University of Louisiana at Lafayette jang@louisiana.edu

2:30 p.m.
The impact of HIV infection on TB.
LihIng Wu Roeger*, Texas Tech University
Zhilan Feng, Purdue University
Carlos CastilloChavez, Cornell University
(98934171)

3:00 p.m.
A discrete, sizestructured chemostat model with an inhibitor.
Sophia R.J. Jang*, University of Louisiana at Lafayette
(98992172)

3:30 p.m.
Stochastic Differential Equation Models for Epidemics with Multiple Pathogen Strains.
Linda J. Allen*, Texas Tech University
Nadarajah Kirupaharan, Texas Tech University
(9899297)

Thursday October 2, 2003, 2:30 p.m.4:50 p.m.
Special Session on Graphs and Diagraphs, I
Room 131 (1st Floor), Engineering Center (ECCR) Organizers: Michael Jacobson, University of Colorado, Denver msj@math.cudenver.edu
Richard J. Lundgren, University of colorado, Denver lundgren@carbon.cudenver.edu

2:30 p.m.
Cycle Extendabilities for Special Graphs.
Guantao Chen*, Georgia State University
Ralphs J Faudree, University of Memphis
Ronald J Gould, Emory University
Michael S Jacobson, University of Colorado at Denver
(9890568)

3:00 p.m.
Forbidden Subgraphs That Imply $2$Factors With A Specified Number of Components.
Jill Faudree, University of Alaska  Fairbanks
Ralph Faudree*, University of Memphis
(9890582)

4:00 p.m.
Dirac and Ore Type Results for Tournaments.
Arthur H Busch*, University of Colorado at Denver
Michael S Jacobson, University of Colorado at Denver
(98905268)

4:30 p.m.
Equivalence relations on colored digraphs.
Bryan L. Shader*, University of Wyoming
(9890596)

Thursday October 2, 2003, 2:30 p.m.4:20 p.m.
Special Session on Finite Geometries, II
Room 118 (1st Floor), Engineering Center (ECCR) Organizers: Stanley E. Payne, University of Colorad Denver spayne@math.cudenver.edu
Robert Allen Liebler, Colorado State University liebler@math.colostate.edu

2:30 p.m.
Blocking sets of external lines to a conic in PG(2,q).
Gabor Korchmaros*, Mathematics Department University of Basilicata, Italy
(9895192)

3:00 p.m.
On the existence of certain generalized quadrangles.
Vasyl Dmytrenko, Department of Mathematical Sciences
Felix Lazebnik*, Department of Mathematical Sciences
(98905210)

3:30 p.m.
Dimensional dual hyperovals associated with Steiner systems.
Satoshi Yoshiara*, Tokyo Woman's Christian University
Alberto del Fra, University of Rome
(9895157)

4:00 p.m.
When is $\Delta_2^\star(p)$ a subspace?
Ernest E. Shult*, Kansas State University
(98951243)

Thursday October 2, 2003, 2:30 p.m.4:50 p.m.
Special Session on Nonlinear Waves, II
Room 1B 55 (Basement), Engineering Center (ECCR) Organizers: Bernard Deconinck, Colorado State University deconinc@math.colostate.edu
Harvey Segur, University of Colorado Boulder Harvey.Segur@colorado.edu

2:30 p.m.
Extreme Nonlinear Optics (1).
H. Kapteyn*, University of Colorado, Boulder
M. Murnane, University of Colorado, Boulder
(98935221)

3:00 p.m.
Extreme Nonlinear Optics (2).
M. Murnane*, University of Colorado, Boulder
H. Kapteyn, University of Colorado, Boulder
(98935222)

3:30 p.m.
TwoDimensional Solitons in Optically Modulated Waveguide Arrays: An Optical Analog of BoseEinstein Condensation.
M. J. Ablowitz, University of Colorado, Boulder
K. Julien*, University of Colorado, Boulder
Z. H. Musslimani, University of Colorado, Boulder
(98935223)

4:00 p.m.
Multidimensional solitons in a lowdimensional periodic potential.
B. A. Malomed*, Tel Aviv University, Israel
(98935228)

4:30 p.m.
Analysis of spectral stability for vortices in nonlinear Schrodinger equations.
R. L. Pego*, University of Maryland
(98935230)

Thursday October 2, 2003, 2:30 p.m.4:50 p.m.
Special Session on Computational and Mathematical Biology, II
Room 108 (1st Floor), Engineering Center (ECCR) Organizers: Harvey J. Greenberg, University of Colorado at Denver hgreenbe@carbon.cudenver.edu

2:30 p.m.
Genomes to Life: An Opportunity for Mathematics to Advance Biology.
Gary M Johnson*, Office of Science, DOE
(9899286)

3:20 p.m.
Using graph extendeddegree sequence to characterize molecular graphs and biological networks.
JeanLoup Faulon*, Sandia National Laboratories
Shawn Martin, Sandia National Laboratories
(9899270)

4:10 p.m.
Prediction of protein function and pathway at the genome scale: from noisy data to biological knowledge.
Dong Xu*, University of MissouriColumbia
Trupti S Joshi, University of MissouriColumbia
Yu Chen, University of MissouriColumbia / University of Te
(9899266)

Thursday October 2, 2003, 5:10 p.m.6:00 p.m.
Invited Address
Nonsmooth calculus.
Room 265 (2nd Floor), Engineering Center (ECCR)
Juha M. Heinonen*, University of Michigan
Friday October 3, 2003

Friday October 3, 2003, 8:00 a.m.4:00 p.m.
Meeting Registration
Lobby, Mathematics Building

Friday October 3, 2003, 8:00 a.m.4:00 p.m.
Exhibit and Book Sale
Lobby, Mathematics Building

Friday October 3, 2003, 8:30 a.m.10:50 a.m.
Special Session on Graphs and Diagraphs, II
Room 131 (1st Floor), Engineering Center (ECCR) Organizers: Michael Jacobson, University of Colorado, Denver msj@math.cudenver.edu
Richard J. Lundgren, University of colorado, Denver lundgren@carbon.cudenver.edu

8:30 a.m.
On barvisibility graphs.
Joan P Hutchinson*, Macalester College
(98905129)

9:00 a.m.
On unit barvisibility graphs.
Alice M Dean, Skidmore College
Ellen Gethner*, University of Colorado at Denver
Joan P Hutchinson, Macalester College
(98905130)

9:30 a.m.
Several Characterizations for Unit Interval Bigraphs.
David E. Brown*, University of Colorado at Denver
Richard Lundgren, University of Colorado at Denver
(98905156)

10:00 a.m.
Interval kgraphs and related partial orders.
Stephen Carl Flink*, University of Colorado at Denver
(98905227)

10:30 a.m.
Quadrangular Tournaments and Orthogonal Matrices.
Dustin J. Stewart*, University of Colorado at Denver
(98905225)

Friday October 3, 2003, 8:30 a.m.10:50 a.m.
Special Session on Algebraic Geometry, I
Room 155 (1st Floor), Engineering Center (ECCR) Organizers: Holger Kley, Colorado State University kley@math.colostate.edu
Rick Miranda, Colorado State University miranda@math.colostate.edu
Chris Peterson, Colorado State University peterson@math.colostate.edu

8:30 a.m.
Extensions and Rank$2$ Vector Bundles on Irreducible Nodal Curves.
Daniele Arcara*, University of Utah
(98914251)

9:00 a.m.
New bounds on Seshadri constants and nef divisors.
Brian Harbourne*, University of NebraskaLincoln
Joaquim Ro\'e, Universitat Auton\`oma de Barcelona
(9891483)

9:30 a.m.
Multigraded CastelnuovoMumford Regularity.
Diane Maclagan*, Stanford University
(98914249)

10:00 a.m.
Discussion

10:30 a.m.
Kaehler Solvmanifolds and a conjecture of Benson and Gordon.
Donu Arapura*, Purdue University
(98932167)

Friday October 3, 2003, 9:00 a.m.10:50 a.m.
Special Session on Algebras, Lattices and Varieties, III
Room 151 (1st Floor), Engineering Center (ECCR) Organizers: Keith A. Kearnes, University of Colorado, Boulder kearnes@euclid.colorado.edu
Agnes Szendrei, Bolyai Institute szendrei@math.uszeged.hu
Walter Taylor, University of Colorado, Boulder wtaylor@euclid.colorado.edu

9:00 a.m.
Congruence Lattices of Finite Algebras
John W Snow*, Concordia University, Nebraska
(9890836)

9:30 a.m.
Homotopy groups of digraphs and {\bf NP}complete retraction problems.
Benoit Larose*, Concordia University, Montr\'eal, Canada
(9890629)

10:00 a.m.
Break

10:30 a.m.
Whaley's Theorem for Finite Lattices.
Ralph Freese, University of Hawaii
Jennifer Hyndman*, University of Northern British Columbia
J B Nation, University of Hawaii
(9890645)

Friday October 3, 2003, 9:00 a.m.10:50 a.m.
Special Session on Applications of Number Theory and Algebraic Geometry to Coding, I
Room 200 (2nd Floor), Engineering Center (ECCR) Organizers: David R. Grant, University of Colorado, Boulder frant@boulder.colorado.edu
Jose Felipe Voloch, University of Texasat Austin voloch@math.utexas.edu
Judy Leavitt Walker, University of Nebraska, Lincoln jwalker@math.unl.edu

9:00 a.m.
Cyclic caps of more than $3q^2$ points in $AG(4,q)$ in characteristic $2.$.
Juergen Bierbrauer*, Michigan Technological University
(98951148)

9:30 a.m.
Algebraic Constructions of LowDensity Parity Check Codes.
Matthew T Koetz*, University of Nebraska, Lincoln
(98911164)

10:00 a.m.
Applications of Algebraic Number Theory in Multiantenna Wireless Communications.
Pranav Dayal*, University of Colorado, Boulder.
Mahesh K Varanasi, University of Colorado, Boulder.
(98994259)

10:30 a.m.
On SpaceTime Coding and the Diophantine Approximation Theory.
Hesham El Gamal*, The Ohio State University
Mohamed Oussama Damen, University of Alberta
(98911256)

Friday October 3, 2003, 9:00 a.m.10:50 a.m.
Special Session on Geometric Methods in Partial Differential Equations, III
Room 1B 40 (Basement), Engineering Center (ECCR) Organizers: Jeanne N. Clelland, University of Colorado, Boulder Jeanne.Clelland@colorado.edu
George R. Wilkins, University of Hawaii grw@math.hawaii.edu

9:00 a.m.
The Inverse Problem of Lagrangian Mechanics for the Canonical Lie Group Spray.
Gerard Thompson*, University of Toledo
Ryad A Ghanam, University of Pittsburgh at Greensburgh
(98953245)

10:00 a.m.
Some general observations regarding symmetry reduction of EDS.
Ian M Anderson*, Utah State University
(98953226)

Friday October 3, 2003, 9:00 a.m.10:50 a.m.
Special Session on Groupoids in Analysis and Geometry, III
Room 133 (1st Floor), Engineering Center (ECCR) Organizers: Lawrence Baggett, University of Colorado, Boulder baggett@euclid.colorado.edu
Jerry Kaminker, Indiana UniversityPurdue University Indianapolis kaminker@math.iupui.edu
Judith Packer, University of Colorado, Boulder packer@euclid.colorado.edu

9:00 a.m.
Fell Bundles and Groupoid Quantization.
Birant Ramazan*, University of Nevada Reno
(98981267)

9:30 a.m.
Essentially trivial equivalence relations.
Raymond Fabec*, Department of Mathematics, Louisiana State University, Baton Rouge
(98920115)

10:00 a.m.
On the cyclic cohomology of extended Hopf algebras.
Masoud Khalkhali*, University of Western Ontario
(98919133)

10:30 a.m.
The universal cover of a higher rank graph.
Alex Kumjian*, University of Nevada, Reno
(98946194)

Friday October 3, 2003, 9:00 a.m.10:45 a.m.
Special Session on Noncommutative Geometry and Geometric Analysis, III
Room 139 (1st Floor), Engineering Center (ECCR) Organizers: Carla Farsi, University of Colorado farsi@euclid.colorado.edu
Alexander Gorokhovsky, University of Colorado gorokhov@euclid.colorado.edu
Siye Wu, University of Colorado siye.wu@colorado.edu

9:00 a.m.
Positive Mass Theorem and Stability of Manifolds with Parallel Spinors.
Xianzhe Dai*, UCSB
Xiaodong Wang, MIT
Guofang Wei, UCSB
(98958174)

10:00 a.m.
Noncommutative geometry of limit sets.
John W Lott*, University of Michigan
(9895885)

Friday October 3, 2003, 9:00 a.m.10:50 a.m.
Special Session on Homotopy Theory, I
Room 105 (1st Floor), Engineering Center (ECCR) Organizers: Daniel Dugger, University of Oregon ddugger@math.uoregon.edu
Brooke E. Shipley, Purdue University bshipley@math.purdue.edu

9:00 a.m.
Break

9:30 a.m.
Knot theory through induced maps on configuration spaces.
Dev P. Sinha*, University of Oregon
(98957157)

10:30 a.m.
Simplicial groups modelling Algebraic Ktheory.
Jeanne Duflot*, Colorado State University
(98919149)

Friday October 3, 2003, 9:00 a.m.10:50 a.m.
Special Session on Structured Population and Epidemic Models:Periodicity, Chaos, and Extinction, II
Room 116 (1st Floor), Engineering Center (ECCR) Organizers: Linda J. S. Allen, Texas Tech University lallen@math.ttu.edu
Sophia R.J. Jang, University of Louisiana at Lafayette jang@louisiana.edu

9:00 a.m.
Synchronous Oscillations and a Route to Chaos in the LPA Model.
Jim Cushing*, University of Arizona
(9899299)

9:30 a.m.
Predicting Irregularities in Population Cycles.
Shandelle M. Henson*, Andrews University
(98992106)

10:00 a.m.
Extinction Effect of Parasites on Host Populations.
Yang Kuang*, Arizona State University
(9899291)

10:30 a.m.
Disease induced oscillations between two competing species.
Pauline van den Driessche, University of Victoria
Mary Lou Zeeman*, University of Texas at San Antonio
(98992199)

Friday October 3, 2003, 9:00 a.m.10:50 a.m.
Special Session on Associative Rings and their Modules, I
Room 137 (1st Floor), Engineering Center (ECCR) Organizers: Gene Abrams, University of Colorado at Colorado Springs abrams@math.uccs.edu
Kent Fuller, University of Iowa kfuller@math.uiowa.edu

9:00 a.m.
On Mueller's question.
P N Anh*, R\'enyi Institute, Hungary
D Herbera, Universidad Autonoma de Barcelona, Spain
(98916131)

9:30 a.m.
Actions of finite groups on smooth projective schemes.
Frauke M. Bleher*, University of Iowa
Ted Chinburg, University of Pennsylvania
(98916119)

10:00 a.m.
Ring epimorphisms and $C(X)$.
Michael Barr, McGill University
W.D. Burgess*, University of Ottawa
R. Raphael, Concordia University
(9891379)

10:30 a.m.
Linear Compactness in Cotilting Dualities.
Riccardo Colpi*, Dept. of Mathematics, University of Padova, ITALY
(9891675)

Friday October 3, 2003, 9:00 a.m.10:50 a.m.
Special Session on Analysis on Singular Spaces, I
Room 1B 51 (Basement), Engineering Center (ECCR) Organizers: Mario Bonk, University of Michigan mbonk@umich.edu
Juha Heinonen, Mathemtical Sciences Research Institute heinonen@msri.org

9:00 a.m.
Lagrangian integral currents and geometry of singular spaces.
Joseph HG Fu*, University of Georgia
(98953265)

9:30 a.m.
The impossibility of dimension reduction in $L_1$.
James R Lee, UC Berkeley
Assaf Naor*, Microsoft Research
(9895271)

10:00 a.m.
Minimal volume Alexandrov spaces.
Peter A. Storm*, University of Chicago
(98953107)

10:30 a.m.
Conformal deformations and volume growth.
David A Herron*, University of Cincinnati
(98930117)

Friday October 3, 2003, 9:00 a.m.10:50 a.m.
Special Session on Finite Geometries, III
Room 118 (1st Floor), Engineering Center (ECCR) Organizers: Stanley E. Payne, University of Colorad Denver spayne@math.cudenver.edu
Robert Allen Liebler, Colorado State University liebler@math.colostate.edu

9:00 a.m.
Eggs in $\mathrm{PG}(4n1,q)$, $q$ even, containing a pseudo pointed conic.
Matthew R Brown*, University of Adelaide, Australia
Michel Lavrauw, Universita degli studi di Napoli Federico II
(98951204)

9:30 a.m.
Generalized quadrangles and their analogues via coherent configurations.
Mikhail H. Klin*, University of Delaware, Newark and BenGurion University of the Negev, Beer Sheva
Sven Reichard, University of Delaware, Newark
(98905212)

10:00 a.m.
Elation Points in Generalized Quadrangles.
Koen J. R. Thas*, Ghent University
(98951126)

10:30 a.m.
Characterizations of finite translation generalized quadrangles.
Joseph A Thas*, Ghent University (Belgium)
(98951125)

Friday October 3, 2003, 9:00 a.m.10:50 a.m.
Special Session on Nonlinear Waves, III
Room 1B 55 (Basement), Engineering Center (ECCR) Organizers: Bernard Deconinck, Colorado State University deconinc@math.colostate.edu
Harvey Segur, University of Colorado Boulder Harvey.Segur@colorado.edu

9:00 a.m.
Poisson brackets on meromorphic functions on hyperelliptic Riemann surfaces and 1D integrable hierarchies.
K. Vaninsky*, Michigan State University
(98934231)

9:30 a.m.
A generalized Dirichlet to Neumann map for integrable evolution equations.
B. Pelloni*, Reading University, UK
(98935233)

10:00 a.m.
Resonant solutions of the KP equation and the Toda lattice hierarchy.
G. Biondini*, Ohio State University
(98935232)

Friday October 3, 2003, 9:00 a.m.10:25 a.m.
Special Session on Ubiquitous Heat Kernel, I
Room 150 (1st Floor), Engineering Center (ECCR) Organizers: Jay Jorgenson, City College of New York jjorgenson@mindspring.com
Lynne Walling, University of Colorado Boulder walling@math.colorado.edu

9:00 a.m.
Archimedean height pairing.
Bin Wang*, University of Colorado, Boulder
(98914154)

9:30 a.m.
Archimedean height pairings using heat kernels.
Bruno Harris*, Brown University
(98914184)

10:00 a.m.
Heat kernels and their role in trace formulas.
Jay Jorgenson*, The City College of New York
(98911183)

Friday October 3, 2003, 9:00 a.m.10:50 a.m.
Special Session on Computational Number Theory, I
Room 265 (2nd Floor), Engineering Center (ECCR) Organizers: Brian Conrey, American Institute of Mathematics conrey@aimath.org
Michael Rubinstein, American Institute of Mathematics miker@math.utexas.edu

9:00 a.m.
The Basis Problem and associated algorithms.
Thomas R Shemanske*, Dartmouth College
(9891161)

9:30 a.m.
The Basis Problem and Associated Algorithms.
Arnold K Pizer*, University of Rochester
(9891162)

10:00 a.m.
LSeries and Modular Forms of HalfIntegral Weight.
Holly J Rosson*, Saint Mary's College of Maryland
(98911176)

10:30 a.m.
Central values of twisted Lfunctions.
Zhengyu Mao*, Rutgers University Newark
(9891156)

Friday October 3, 2003, 9:00 a.m.10:45 a.m.
Special Session on Computational and Mathematical Biology, III
Room 108 (1st Floor), Engineering Center (ECCR) Organizers: Harvey J. Greenberg, University of Colorado at Denver hgreenbe@carbon.cudenver.edu

9:00 a.m.
A graphtheoretic approach to separation of y and bions from tandem mass spectrometry data and applications to de novo sequencing.
Chongle Pan, University of Tennessee
Bo Yan, Oak Ridge National Laboratory
Victor Olman, Oak Ridge National Laboratory
Ying Xu*, Oak Ridge National Laboratory
(9896880)

10:00 a.m.
The Topology of DNA.
De Witt L Sumners*, Florida State University
(9899227)

Friday October 3, 2003, 11:10 a.m.12:00 p.m.
Invited Address
Recent progress in timefrequency analysis.
Room 265 (2nd Floor), Engineering Center (ECCR)
Joseph D Lakey*, New Mexico State University
(9894209)

Friday October 3, 2003, 1:30 p.m.2:20 p.m.
Invited Address
Rings up to homotopy.
Room 265 (2nd Floor), Engineering Center (ECCR)
Brooke Shipley*, Purdue University
(9895552)

Friday October 3, 2003, 2:30 p.m.4:50 p.m.
Special Session on Algebras, Lattices and Varieties, IV
Room 151 (1st Floor), Engineering Center (ECCR) Organizers: Keith A. Kearnes, University of Colorado, Boulder kearnes@euclid.colorado.edu
Agnes Szendrei, Bolyai Institute szendrei@math.uszeged.hu
Walter Taylor, University of Colorado, Boulder wtaylor@euclid.colorado.edu

2:30 p.m.
Quasivarieties of commutative binary modes.
Anna B Romanowska*, Warsaw University of Technology, Warsaw, Poland
K Matczak, Warsaw University of Technology, Warsaw, Poland
(9890815)

3:00 p.m.
The Dilworth Theorem on embedding lattices into uniquely complemented lattices.
George Gratzer*, University of Manitoba
Harry Lakser, University of Manitoba
(9890608)

4:00 p.m.
Ordered and quasi ordered sets associated with transformation semigroups.
Boris M Schein*, University of Arkansas
(9890621)

4:30 p.m.
Dualities for double quasioperator algebras.
M Gehrke*, New Mexico State University
H A Priestley, Oxford University
(9890624)

Friday October 3, 2003, 2:30 p.m.4:50 p.m.
Special Session on Applications of Number Theory and Algebraic Geometry to Coding, II
Room 200 (2nd Floor), Engineering Center (ECCR) Organizers: David R. Grant, University of Colorado, Boulder frant@boulder.colorado.edu
Jose Felipe Voloch, University of Texasat Austin voloch@math.utexas.edu
Judy Leavitt Walker, University of Nebraska, Lincoln jwalker@math.unl.edu

2:30 p.m.
Minimal Degree Liftings of Hyperelliptic Curves.
Luis R Finotti*, University of California Santa Barbara
(98911100)

3:00 p.m.
Weierstrass semigroups and codes from a class of maximal nonclassical curves.
Gretchen L. Matthews*, Clemson University
(98914162)

3:30 p.m.
An Improvement of the FengRao Bound on Minimum Distance.
Diana Dunn, University of Arkansas
Sarah B. Graham, Clemson University
Gary Salazar*, Trinity University
(98914161)

4:00 p.m.
Discussion

4:30 p.m.
Algebraic Geometric Codes on Low Rank Surfaces.
Marcos A Zarzar*, University of Texas at Austin
(98911179)

Friday October 3, 2003, 2:30 p.m.4:50 p.m.
Special Session on Geometric Methods in Partial Differential Equations, IV
Room 1B 40 (Basement), Engineering Center (ECCR) Organizers: Jeanne N. Clelland, University of Colorado, Boulder Jeanne.Clelland@colorado.edu
George R. Wilkins, University of Hawaii grw@math.hawaii.edu

2:30 p.m.
Selfdual SU(2) connections, and flows of metrics on $M^3$.
Volodya Itskov*, Duke University
(98953258)

3:30 p.m.
SubFinsler Geometry in Dimension Three.
Jeanne N Clelland, University of Colorado at Boulder
Christopher G Moseley*, United States Military Academy
(98953198)

4:00 p.m.
Generalized Symmetries of Darboux Integrable Equations.
Matt Biesecker*, South Dakota State University
(98935238)

4:30 p.m.
Darboux Integrability and Backlund Equivalence for Hyperbolic Exterior Differential Systems.
Thomas A Ivey*, College of Charleston
(98935151)

Friday October 3, 2003, 2:30 p.m.4:50 p.m.
Special Session on Groupoids in Analysis and Geometry, IV
Room 133 (1st Floor), Engineering Center (ECCR) Organizers: Lawrence Baggett, University of Colorado, Boulder baggett@euclid.colorado.edu
Jerry Kaminker, Indiana UniversityPurdue University Indianapolis kaminker@math.iupui.edu
Judith Packer, University of Colorado, Boulder packer@euclid.colorado.edu

2:30 p.m.
The DixmierDouady class of groupoid crossed products.
Paul S Muhly, The University of Iowa
Dana P Williams*, Dartmouth College
(9894639)

3:00 p.m.
C*algebras of commuting endomorphisms.
Valentin Deaconu*, University of Nevada, Reno
(98946189)

3:30 p.m.
Actions and Coactions for groupoids.
Karla J. Oty*, Colorado State University Pueblo
Arlan Ramsay, University of Colorado, Boulder
(9892094)

4:00 p.m.
Actions and Coactions for Groupoids, II.
Arlan Ramsay*, University of Colorado
Karla J. Oty, Colorado State University  Pueblo
(9892095)

4:30 p.m.
Boundaries of generalized BaumslagSolitar groups.
Jerome Kaminker*, IUPUI
(98946208)

Friday October 3, 2003, 2:30 p.m.4:25 p.m.
Special Session on Noncommutative Geometry and Geometric Analysis, IV
Room 139 (1st Floor), Engineering Center (ECCR) Organizers: Carla Farsi, University of Colorado farsi@euclid.colorado.edu
Alexander Gorokhovsky, University of Colorado gorokhov@euclid.colorado.edu
Siye Wu, University of Colorado siye.wu@colorado.edu

2:30 p.m.
Projective multiresolution analyses for $L^2(\mathbb R^n)$.
Judith A. Packer*, University of Colorado at Boulder
(98946260)

3:30 p.m.
GaussBonnet and Poincar\'{e}Hopf Theorems for Orbifolds with Boundary.
Christopher W Seaton*, University of Colorado
(98953110)

4:00 p.m.
Geometric Quantization, Parallel Transport and the Fourier Transform.
William D Kirwin*, University of Colorado
(98953269)

Friday October 3, 2003, 2:30 p.m.4:45 p.m.
Special Session on Homotopy Theory, II
Room 105 (1st Floor), Engineering Center (ECCR) Organizers: Daniel Dugger, University of Oregon ddugger@math.uoregon.edu
Brooke E. Shipley, Purdue University bshipley@math.purdue.edu

2:30 p.m.
Break

3:00 p.m.
Loop spaces via algebraic theories.
Bernard Badzioch*, University of Minnesota
Kuerak Chung, University of Minnesota
Alexander A. Voronov, University of Minnesota
(98955214)

3:30 p.m.
Little cubes and long knots.
Ryan D Budney*, University of Rochester
(98900155)

4:00 p.m.
$\text{Sq}^0$ and the Adams $E_2$term.
John H Palmieri*, University of Washington
(98955178)

Friday October 3, 2003, 2:30 p.m.4:20 p.m.
Special Session on Structured Population and Epidemic Models:Periodicity, Chaos, and Extinction, III
Room 116 (1st Floor), Engineering Center (ECCR) Organizers: Linda J. S. Allen, Texas Tech University lallen@math.ttu.edu
Sophia R.J. Jang, University of Louisiana at Lafayette jang@louisiana.edu

2:30 p.m.
Competitive Exclusion and Coexistence Results for a Nonlinear SizeStructured Population Model.
Azmy S Ackleh*, University of Louisiana at Lafayette
Keng Deng, University of Louisianal at Lafayette
(9899288)

3:00 p.m.
AgeHierarchical Competitions and the Effects of Dispersion.
K. W. Blayneh*, Florida A&M University
(98992137)

3:30 p.m.
Effects of host chronicage structure on the dynamics of infectious diseases.
Maia Martcheva*, University of Florida
Carlos CastilloChavez, Cornell University
(9899298)

4:00 p.m.
The most basic stagestructured population model with densitydependent per capita transition rate.
Horst R Thieme*, Arizona State University
(9899278)

Friday October 3, 2003, 2:30 p.m.4:50 p.m.
Special Session on Graphs and Diagraphs, III
Room 131 (1st Floor), Engineering Center (ECCR) Organizers: Michael Jacobson, University of Colorado, Denver msj@math.cudenver.edu
Richard J. Lundgren, University of colorado, Denver lundgren@carbon.cudenver.edu

2:30 p.m.
On graph irregularity strength.
A. Frieze, Carnegie Mellon University
R. Gould*, Emory University
M. Karonski, Emory University
F. Pfender, Technical University of Berlin
(9890555)

3:00 p.m.
The pebbling threshold of squared cliques and a conjecture of Graham.
Glenn H Hurlbert*, Arizona State University
Airat Bekmetjev, Hope College
(9890550)

3:30 p.m.
Chessboard Problems.
John J Watkins*, Colorado College
(9890574)

4:00 p.m.
A bound on the total size of a cutcover.
Andre Kundgen*, Cal State San Marcos
Megan Spangler, Cal State San Marcos
(98905147)

4:30 p.m.
Covering Euclidean $n$space by translates of a convex body.
Zoltan Furedi, University of Illinois at UrbanaChampaign, and Hungarian Academy of Sciences
JeongHyun Kang*, University of Illinois at UrbanaChampaign
(98905200)

Friday October 3, 2003, 2:30 p.m.4:50 p.m.
Special Session on Associative Rings and their Modules, II
Room 137 (1st Floor), Engineering Center (ECCR) Organizers: Gene Abrams, University of Colorado at Colorado Springs abrams@math.uccs.edu
Kent Fuller, University of Iowa kfuller@math.uiowa.edu

2:30 p.m.
Zero Divisor Graphs.
Frank DeMeyer*, Colorado state University
Lisa DeMeyer, Central Michigan University
(9891340)

3:00 p.m.
Quivers of Locally Artinian Rings.
Jennifer A. Firkins Nordstrom*, Linfield College
(98916132)

3:30 p.m.
$n$Cotilting and $n$Tilting Modules over Ring Extensions.
Alberto Tonolo*, University of Padova, Italy
(9891881)

4:00 p.m.
QuasiKoszul Algebras.
Yuriy Drozd, Kyiv Taras Shevchenko University
Edward L Green*, Virginia Tech
(98916108)

4:30 p.m.
Stacks of finite dimensional algebras and their homology.
Nancy Heinschel, University of California at Santa Barbara
Birge HuisgenZimmermann*, University of California at Santa Barbara
(98916122)

Friday October 3, 2003, 2:30 p.m.4:50 p.m.
Special Session on Analysis on Singular Spaces, II
Room 1B 51 (Basement), Engineering Center (ECCR) Organizers: Mario Bonk, University of Michigan mbonk@umich.edu
Juha Heinonen, Mathemtical Sciences Research Institute heinonen@msri.org

2:30 p.m.
A lemma on the higher integrability of functions and its applications.
Xiao Zhong*, Department of Mathematics and Statistics, University of Jyv\"askyl\"a
(98949114)

3:00 p.m.
Size of Fatou Sets for Bounded pHarmonic Functions in the Half Plane (joint work with R. Kaufman).
JangMei Wu*, University of Illinois
Robert Kaufman, University of Illinois
(98931143)

3:30 p.m.
Bilipschitz Embeddings of Metric Spaces in Euclidean Space.
Conrad P Plaut*, University of Tennessee
(98953237)

4:00 p.m.
Hausdorff dimensions of Heisenberg fractals.
Zoltan M Balogh, University of Berne
Regula HoferIsenegger, University of Berne
Jeremy T Tyson*, University of Illinois
(98928239)

4:30 p.m.
Mappings of finite distortion: The sharp modulus of continuity.
Jani Onninen*, University of Michigan
Pekka Koskela, University of Jyvaskyla
(98930252)

Friday October 3, 2003, 2:30 p.m.4:50 p.m.
Special Session on Algebraic Geometry, II
Room 155 (1st Floor), Engineering Center (ECCR) Organizers: Holger Kley, Colorado State University kley@math.colostate.edu
Rick Miranda, Colorado State University miranda@math.colostate.edu
Chris Peterson, Colorado State University peterson@math.colostate.edu

2:30 p.m.
Degenerations of vector bundles on three space.
A. Prabhakar Rao*, UMSt.Louis
(98914242)

3:00 p.m.
Discussion

3:30 p.m.
A rational surface of degree 12 in projective fourspace.
Hirotachi Abo*, Department of Mathematics, Colorado State University
(98914190)

4:00 p.m.
Families of degree two curves and certain ropes.
Uwe Nagel*, University of Kentucky
Roberto Notari, Politecnico di Torino
Maria L Spreafico, Politecnico di Torino
(98914216)

4:30 p.m.
Linear series on a special rational surface.
Hal Schenck*, Texas A&M University
(98914186)

Friday October 3, 2003, 2:30 p.m.4:50 p.m.
Special Session on Finite Geometries, IV
Room 118 (1st Floor), Engineering Center (ECCR) Organizers: Stanley E. Payne, University of Colorad Denver spayne@math.cudenver.edu
Robert Allen Liebler, Colorado State University liebler@math.colostate.edu

2:30 p.m.
Odd order conjecture of translation planes.
Chat Y. Ho*, University of Florida
(9892060)

3:00 p.m.
Construction of Some New Projective Planes.
G Eric Moorhouse*, University of Wyoming
(9890544)

3:30 p.m.
The Classification of flag transitive planes of order 32.
Patrick S Fleming*, University of Wyoming
(98951113)

4:00 p.m.
Orbit Computation and Applications in Finite Geometry.
Anton Betten*, Colorado State University
(98951136)

4:30 p.m.
Hemisystems of $H(3,q^2)$.
Tim Penttila*, University of Western Australia
(9895138)

Friday October 3, 2003, 2:30 p.m.4:50 p.m.
Special Session on Nonlinear Waves, IV
Room 1B 55 (Basement), Engineering Center (ECCR) Organizers: Bernard Deconinck, Colorado State University deconinc@math.colostate.edu
Harvey Segur, University of Colorado Boulder Harvey.Segur@colorado.edu

2:30 p.m.
Nonlinear dynamics with matter waves  experiments with BoseEinstein condensates.
P. W. Engels*, University of Colorado, Boulder
(98935234)

3:00 p.m.
Turning fermions into bosons.
D. S. Jin*, University of Colorado, Boulder
(98935235)

3:30 p.m.
Nonlinear Waves in BEC: A Collection of Short Stories.
P. G. Kevrekidis*, University of Massachusetts
(98935244)

4:00 p.m.
SelfTrapping of Light in a TwoDimensional Nonlinear Periodic Structure.
Z. Musslimani*, Central Florida University
(98935246)

4:30 p.m.
Dynamics of periodic multicomponent BoseEinstein condensates.
B. Deconinck*, University of Washington
(98935247)

Friday October 3, 2003, 2:30 p.m.3:55 p.m.
Special Session on Ubiquitous Heat Kernel, II
Room 150 (1st Floor), Engineering Center (ECCR) Organizers: Jay Jorgenson, City College of New York jjorgenson@mindspring.com
Lynne Walling, University of Colorado Boulder walling@math.colorado.edu

2:30 p.m.
A heat kernel associated to Ramanujan's tau function.
Jeffrey Stopple*, Mathematics, UCSB
(98911229)

3:00 p.m.
Comparison of the Heat Kernel for Finite Graphs and that for Compact Riemann Surfaces.
Audrey A. Terras*, Univ. of California at San Diego
(98911207)

3:30 p.m.
Kato's inequality for discrete magnetic Laplacians.
J. Dodziuk*, Queens College (CUNY)
V. Mathai, University of Adelaide
(98958165)

Friday October 3, 2003, 2:30 p.m.5:00 p.m.
Special Session on Computational Number Theory, II
Room 265 (2nd Floor), Engineering Center (ECCR) Organizers: Brian Conrey, American Institute of Mathematics conrey@aimath.org
Michael Rubinstein, American Institute of Mathematics miker@math.utexas.edu

2:30 p.m.
Computing Lfunctions.
Michael Rubinstein*, University of Waterloo
(98911253)

3:00 p.m.
Maass forms and their Lfunctions.
David W Farmer*, American Institute of Mathematics
(98911241)

3:30 p.m.
Discussion

Friday October 3, 2003, 2:30 p.m.4:50 p.m.
Special Session on Computational and Mathematical Biology, IV
Room 108 (1st Floor), Engineering Center (ECCR) Organizers: Harvey J. Greenberg, University of Colorado at Denver hgreenbe@carbon.cudenver.edu

2:30 p.m.
Finding the abundance of functional RNA molecules in the space of all possible sequences.
Rob Knight*, MCD Biology, CU Boulder
(9899290)

3:20 p.m.
Searching for Sequence Motifs with Single Molecules.
Thomas T. Perkins*, CU BoulderNIST
(98992118)

4:10 p.m.
A motor that makes its own track: helicase opening of DNA.
M D Betterton*, University of Colorado at Boulder
(98992145)

Friday October 3, 2003, 2:30 p.m.3:55 p.m.
Session for Contributed Papers
Room 110 (1st Floor), Engineering Center (ECCR)

2:30 p.m.
Conjugate Direction Methods in Linear Topological Spaces.
Ivie Stein, Jr.*, The University of Toledo
(98965153)

2:45 p.m.
On the Direct Product of Measures and Applications.
Carmen Vlad*, Pace University
(9892842)

3:00 p.m.
The Hamming Distance between Two Uniform Set Systems.
Junichiro Fukuyama, Dr.*, Indiana State University
(9890520)

3:15 p.m.
Optimality Condition In Optimization Network Tasks.
Seilkhan Boranbayev*, Milwaukee, WI
(9890523)

3:30 p.m.
Rational jet dependence of formal equivalences between realanalytic hypersurfaces in $\mathbb{C}^2$.
R. Travis Kowalski*, Colorado College
(98932273)

3:45 p.m.
Structure of associated prime ideals of differential operator rings.
Vijay Kumar Bhat, Dr.*, Banasthali VidyapithRajasthan304022.India.
(9891610)

Friday October 3, 2003, 5:10 p.m.6:00 p.m.
Erd\H os Memorial Lecture
Some Insights of Computational Complexity Theory.
Room A2B70, MCDB Biology
Avi Wigderson*, Institute for Advanced Study

Friday October 3, 2003, 6:15 p.m.7:30 p.m.
Reception (Hosted by the Department of Mathematics)
Room 350, Mathematics Building
Saturday October 4, 2003

Saturday October 4, 2003, 9:00 a.m.9:50 a.m.
Invited Address
Maximally supersymmetric gauge theories.
Room 1B 40 (Basement), Engineering Center (ECCR)
Albert Schwarz*, University of California Davis

Saturday October 4, 2003, 10:00 a.m.12:20 p.m.
Special Session on Algebras, Lattices and Varieties, V
Room 151 (1st Floor), Engineering Center (ECCR) Organizers: Keith A. Kearnes, University of Colorado, Boulder kearnes@euclid.colorado.edu
Agnes Szendrei, Bolyai Institute szendrei@math.uszeged.hu
Walter Taylor, University of Colorado, Boulder wtaylor@euclid.colorado.edu

10:00 a.m.
Heyting Varieties and Priestley Configurations.
R. Ball*, University of Denver
A. Pultr, Charles University
J. Sichler, University of Manitoba
(9890617)

11:00 a.m.
Sheaf Representations of Preprimal Varieties.
Arthur Knoebel*, Vanderbilt University
(9890816)

11:30 a.m.
Products of quasigroup actions.
Jonathan D.H. Smith*, Iowa State University
(9890814)

Saturday October 4, 2003, 10:00 a.m.12:20 p.m.
Special Session on Applications of Number Theory and Algebraic Geometry to Coding, III
Room 200 (2nd Floor), Engineering Center (ECCR) Organizers: David R. Grant, University of Colorado, Boulder frant@boulder.colorado.edu
Jose Felipe Voloch, University of Texasat Austin voloch@math.utexas.edu
Judy Leavitt Walker, University of Nebraska, Lincoln jwalker@math.unl.edu

10:00 a.m.
The distribution of class groups of function fields.
Jeffrey D Achter*, Department of Mathematics, Columbia University
(9891113)

10:30 a.m.
The twovariable zeta function of a curve and algebraicgeometric codes.
Iwan M Duursma*, University of Illinois at UrbanaChampaign
(98911127)

11:00 a.m.
Modularity of Asymptotically Optimal Recursive Towers.
WenChing Winnie Li*, Penn State University
(9891487)

11:30 a.m.
An application of Galois covers of the affine line to maximal curves.
Rachel J Pries*, Colorado State University
(9891176)

12:00 p.m.
Nonbinary Quantum ErrorCorrecting Codes from Algebraic Curves.
JonLark Kim*, Department of Math, University of NebraskaLincoln
Judy L. Walker, Department of Math, University of NebraskaLincoln
(98994146)

Saturday October 4, 2003, 10:00 a.m.11:50 a.m.
Special Session on Geometric Methods in Partial Differential Equations, V
Room 1B 40 (Basement), Engineering Center (ECCR) Organizers: Jeanne N. Clelland, University of Colorado, Boulder Jeanne.Clelland@colorado.edu
George R. Wilkins, University of Hawaii grw@math.hawaii.edu

10:00 a.m.
On the twophase Stefan problem.
Marianne Korten*, Kansas State University
Charles N Moore, Kansas State University
(98935191)

11:00 a.m.
Characterizing immersions that lie on algebraic varieties (Preliminary report).
Steven V Wilkinson*, Northern Kentucky University
(9895393)

11:30 a.m.
Discussion

Saturday October 4, 2003, 10:00 a.m.11:45 a.m.
Special Session on Noncommutative Geometry and Geometric Analysis, V
Room 139 (1st Floor), Engineering Center (ECCR) Organizers: Carla Farsi, University of Colorado farsi@euclid.colorado.edu
Alexander Gorokhovsky, University of Colorado gorokhov@euclid.colorado.edu
Siye Wu, University of Colorado siye.wu@colorado.edu

10:00 a.m.
Symplectic toric spaces with isolated singularities.
Eugene M Lerman*, University of Illinois, UrbanaChampaign
(98958170)

11:00 a.m.
Hopfcyclic cohomology with coefficients.
Masoud Khalkhali*, Western Ontario
(98919224)

Saturday October 4, 2003, 10:00 a.m.12:15 p.m.
Special Session on Homotopy Theory, III
Room 105 (1st Floor), Engineering Center (ECCR) Organizers: Daniel Dugger, University of Oregon ddugger@math.uoregon.edu
Brooke E. Shipley, Purdue University bshipley@math.purdue.edu

10:00 a.m.
Trace and Transfer Maps in the Algebraic Ktheory of Spaces.
Wojciech Dorabiala, Penn State Altoona
Mark W Johnson*, Penn State Altoona
(98919201)

10:30 a.m.
Controlled homotopy theory of simplicial sets.
Daniel C Isaksen*, Wayne State University
(9895589)

11:00 a.m.
Small object argument for classes.
Boris Chorny*, University of Western Ontario
(98955175)

11:30 a.m.
Representations of profinite groups, representation varieties, and Ktheory.
Gunnar Carlsson*, Stanford
(98919272)

Saturday October 4, 2003, 10:00 a.m.11:50 a.m.
Special Session on Graphs and Diagraphs, IV
Room 131 (1st Floor), Engineering Center (ECCR) Organizers: Michael Jacobson, University of Colorado, Denver msj@math.cudenver.edu
Richard J. Lundgren, University of colorado, Denver lundgren@carbon.cudenver.edu

10:00 a.m.
Agreement Subtrees.
William H.E. Day, Port Maitland, Nova Scotia
F. R. McMorris*, Illinois Institute of Technology
(98905111)

10:30 a.m.
Offensive Alliances in Directed Graphs.
Larry J Langley*, University of the Pacific
(98905112)

11:00 a.m.
Maximal Clique Partitions of Graphs.
Chariya Uiyyasathian, University of Colorado at Denver
Kathryn Fraughnaugh*, University of Colorado at Denver
(98905264)

11:30 a.m.
On the asymptotics of the smallest eigenvalues of a $k$regular graph.
Sebastian M Cioaba*, Queen's University
(98905202)

Saturday October 4, 2003, 10:00 a.m.12:20 p.m.
Special Session on Associative Rings and their Modules, III
Room 137 (1st Floor), Engineering Center (ECCR) Organizers: Gene Abrams, University of Colorado at Colorado Springs abrams@math.uccs.edu
Kent Fuller, University of Iowa kfuller@math.uiowa.edu

10:00 a.m.
Complements to projective almost complete tilting modules.
Francesca Mantese*, University of Verona
(9891658)

10:30 a.m.
Fractional skew monoid rings.
P. Ara, Universitat Aut\`onoma de Barcelona
M. A. Gonz\'alezBarroso, Universidad de C\'adiz
K. R. Goodearl*, University of California at Santa Barbara
E. Pardo, Universidad de C\'adiz
(98916123)

11:00 a.m.
Morphic Rings and Modules.
W K Nicholson*, University of Calgary
E Sanchez Campos, University of Malaga
(9891630)

11:30 a.m.
Twosided Vector Spaces.
Adam Nyman*, University of Montana, Missoula
Christopher J. Pappacena, National Security Agency
(98916218)

12:00 p.m.
Endomorphism Rings in Morita Contexts.
Pham Ngoc Anh, Alfred Renyi Mathematical Institute
Michael F Siddoway*, Colorado College
(98913124)

Saturday October 4, 2003, 10:00 a.m.12:20 p.m.
Special Session on Analysis on Singular Spaces, III
Room 1B 51 (Basement), Engineering Center (ECCR) Organizers: Mario Bonk, University of Michigan mbonk@umich.edu
Juha Heinonen, Mathemtical Sciences Research Institute heinonen@msri.org

10:00 a.m.
EZstructures and actions on $\mathbb D^n$.
JeanFrancois Lafont*, S.U.N.Y. Binghamton
F.T. Farrell, S.U.N.Y. Binghamton
(9895122)

10:30 a.m.
Conjugating semigroups of holomorphic endomorphisms.
Sergiy Merenkov*, University of Michigan
Gregery T Buzzard, Purdue University
(98932104)

11:00 a.m.
On the Lipschitz regularity of $2$harmonic functions in metric spaces.
Nageswari Shanmugalingam*, University of Cincinnati
Pekka Koskela, University of Jyvaskyla
Kai Rajala, University of Jyvaskyla
(98931128)

11:30 a.m.
Quasisymmetric Embedding of Self Similar Surfaces.
Daniel Meyer*, University of Washington
(98930205)

12:00 p.m.
Structure of exceptional sets and related problems of geometric measure theory.
Giovanni Alberti, University of Pisa
Marianna Cs\"ornyei*, University College London
David Preiss, University College London
(98928271)

Saturday October 4, 2003, 10:00 a.m.12:20 p.m.
Special Session on Algebraic Geometry, III
Room 155 (1st Floor), Engineering Center (ECCR) Organizers: Holger Kley, Colorado State University kley@math.colostate.edu
Rick Miranda, Colorado State University miranda@math.colostate.edu
Chris Peterson, Colorado State University peterson@math.colostate.edu

10:00 a.m.
A geometric LittlewoodRichardson rule.
Ravi Vakil*, Stanford
(98914206)

10:30 a.m.
Incidence duality and AbelJacobian map.
Bin Wang*, University of Colorado, Boulder
(98914101)

11:00 a.m.
Classification of Quadruple Galois Canonical covers.
Francisco J Gallego, Universidad Complutense de Madrid
Bangere P Purnaprajna*, University of Kansas
(98914121)

11:30 a.m.
Deformation of Galois covers in characteristic p.
Rachel J Pries*, Colorado State University
(98914120)

12:00 p.m.
Threefolds with Nonconstant Regular Functions and Vanishing Hodge Cohomology.
Jing Zhang*, Department of Mathematics, Washington University, St.Louis, MO 63130
(98914274)

Saturday October 4, 2003, 10:00 a.m.11:50 a.m.
Special Session on Finite Geometries, V
Room 118 (1st Floor), Engineering Center (ECCR) Organizers: Stanley E. Payne, University of Colorad Denver spayne@math.cudenver.edu
Robert Allen Liebler, Colorado State University liebler@math.colostate.edu

10:00 a.m.
Partial Ovoids and Spans of the Hermitian Surface.
G. L. Ebert*, University of Delaware
(9895154)

10:30 a.m.
Characterizing "Neoclassical" Unitals as Codewords.
Kenneth L Wantz*, Southern Nazarene University
Ronald D Baker, West Virginia State College
(9895137)

11:00 a.m.
The nonexistence of ovoids in the dual polar space DW(6,q).
Bruce N. Cooperstein*, University of California, Santa Cruz
Antonio Pasini, University of Siena
(98951185)

11:30 a.m.
Caps on a Hermitian variety.
James W Hirschfeld*, University of Sussex
(9895148)

Saturday October 4, 2003, 10:00 a.m.12:20 p.m.
Special Session on Nonlinear Waves, V
Room 1B 55 (Basement), Engineering Center (ECCR) Organizers: Bernard Deconinck, Colorado State University deconinc@math.colostate.edu
Harvey Segur, University of Colorado Boulder Harvey.Segur@colorado.edu

10:00 a.m.
Stabilizing the BenjaminFeir instability.
H. Segur*, University of Colorado, Boulder
(98935248)

10:30 a.m.
Continuous and Discrete Homotopy Operators with Applications in Integrability Testing.
W. Hereman*, Colorado School of Mines
(98935250)

11:00 a.m.
Lab Tours (0).
B. Deconinck*, University of Washington
H. Segur, University of Colorado, Boulder
(98935261)

11:30 a.m.
Lab Tours (1): BoseEinstein condensates.
P. W. Engels*, University of Colorado, Boulder
(98935262)

12:00 p.m.
Lab Tours (2).
H. Kapteyn*, University of Colorado, Boulder
M. Murnane, University of Colorado, Boulder
(98935263)

Saturday October 4, 2003, 10:00 a.m.11:25 a.m.
Special Session on Ubiquitous Heat Kernel, III
Room 150 (1st Floor), Engineering Center (ECCR) Organizers: Jay Jorgenson, City College of New York jjorgenson@mindspring.com
Lynne Walling, University of Colorado Boulder walling@math.colorado.edu

10:00 a.m.
The use of the heat kernel in lowdimensional quantum qauge theory.
Dana Fine*, University of Massachusetts, Dartmouth
(98953254)

10:30 a.m.
Heat kernels in geometric evolution equations.
Joseph F Grotowski*, City College of New York, CUNY
(98953193)

11:00 a.m.
Geometric Models for a family of small representations.
L. I Barchini*, Oklahoma State University
(98943150)

Saturday October 4, 2003, 10:00 a.m.12:50 p.m.
Special Session on Computational Number Theory, III
Room 245 (2nd Floor), Engineering Center (ECCR) Organizers: Brian Conrey, American Institute of Mathematics conrey@aimath.org
Michael Rubinstein, American Institute of Mathematics miker@math.utexas.edu

10:00 a.m.
High precision values of Stieltjes constants, Taylor coefficients, and fractional derivatives for the Riemann zeta function.
Rick Kreminski*, Texas A&M University  Commerce
(9891126)

10:30 a.m.
On the vanishing of cubic twists of elliptic curves.
Chantal David*, Concordia University
Hershy Kisilevsky, Concordia University
Jack Fearnley, Concordia University
(98911213)

11:00 a.m.
Barnes integrals and archimedean Lfactors.
Eric Stade*, University of Colorado at Boulder
(98911163)

11:30 a.m.
RankinCohen type brackets for Siegel modular forms.
Olav K Richter*, University of North Texas
Ozlem Imamoglu, ETH Zurich
(98911169)

12:00 p.m.
Almost all reductions of an elliptic curve have a large exponent.
William D Duke*, UCLA
(98911159)

12:30 p.m.
Constructing $1$Parameter Families of Elliptic Curves over $\Bbb{Q}(t)$ with Moderate Rank.
Steven J Miller*, The Ohio State University
(98911195)

Saturday October 4, 2003, 10:00 a.m.1:00 p.m.
Special Presentation
TA development using case studies: A workshop for faculty.
Room 265 (2nd Floor), Engineering Center (ECCR)
Presenters:
Soloman Friedberg, Boston College

Saturday October 4, 2003, 2:00 p.m.4:50 p.m.
Special Session on Applications of Number Theory and Algebraic Geometry to Coding, IV
Room 200 (2nd Floor), Engineering Center (ECCR) Organizers: David R. Grant, University of Colorado, Boulder frant@boulder.colorado.edu
Jose Felipe Voloch, University of Texasat Austin voloch@math.utexas.edu
Judy Leavitt Walker, University of Nebraska, Lincoln jwalker@math.unl.edu

2:00 p.m.
Various results on finite fields with applications to codes.
Nigel Boston*, University of WisconsinMadison
(98911182)

2:30 p.m.
Minimum Homogeneous Weight of Trace Codes over Galois Rings.
Marcus Greferath*, San Diego State University
Michael O'Sullivan, San Diego State University
Roxana Smarandache, San Diego State University
(98905236)

3:00 p.m.
A Unified Framework for Decoding "Idealbased" Codes.
Venkatesan Guruswami*, University of Washington
(98968166)

3:30 p.m.
The minimum distance of some 2D cyclic codes.
Robert F Lax*, LSU
(9899432)

4:00 p.m.
Convolutional codes with Maximum Distance Profile.
Roxana Smarandache*, San Diego State University
Heide GluesingLuerssen, University of Oldenburg
Ryan Hutchinson, University of Notre Dame
Joachim Rosenthal, University of Notre Dame
(98994142)

4:30 p.m.
An Essay on Equivalence of Linear Codes.
Jay A. Wood*, Western Michigan University
(98994192)

Saturday October 4, 2003, 2:00 p.m.3:20 p.m.
Special Session on Associative Rings and their Modules, IV
Room 137 (1st Floor), Engineering Center (ECCR) Organizers: Gene Abrams, University of Colorado at Colorado Springs abrams@math.uccs.edu
Kent Fuller, University of Iowa kfuller@math.uiowa.edu

2:00 p.m.
Binomial Rings.
Jessica K. Sklar*, Pacific Lutheran University
(98916152)

2:30 p.m.
Rationality of the Poincare series for Koszul algebras.
Izuru Mori*, Syracuse University
(9891628)

3:00 p.m.
The AuslanderReiten quiver of a selfinjective Koszul algebra.
Roberto MartinezVilla, UNAMMorelia
Dan Zacharia*, Syracuse University
(98916144)

Saturday October 4, 2003, 2:30 p.m.4:15 p.m.
Special Session on Homotopy Theory, IV
Room 105 (1st Floor), Engineering Center (ECCR) Organizers: Daniel Dugger, University of Oregon ddugger@math.uoregon.edu
Brooke E. Shipley, Purdue University bshipley@math.purdue.edu

2:30 p.m.
Equivariant Formality.
Laura Scull*, University of British Columbia
(9895563)

3:00 p.m.
Composition of bilinear forms in characteristic p.
Daniel Dugger*, University of Oregon
Daniel Isaksen, Wayne State University
(98912102)

3:30 p.m.
The Multiplication on MU and BP.
Michael A Mandell*, University of Chicago
(98955158)
Inquiries: meet@ams.org

