
AMS Sectional Meeting Full Program
Current as of Tuesday, April 12, 2005 15:10:31
Program 
Deadlines 
Registration/Housing/Etc. 
Inquiries: meet@ams.org
2003 Spring Eastern Sectional Meeting
New York, NY, April 1213, 2003
Meeting #986
Associate secretaries: Lesley M Sibner, AMS lsibner@duke.poly.edu
Saturday April 12, 2003

Saturday April 12, 2003, 7:30 a.m.4:00 p.m.
Meeting Registration
Lobby, Courant Building

Saturday April 12, 2003, 7:30 a.m.4:00 p.m.
Exhibit and Book Sale
13th Floor Lounge, Courant Building

Saturday April 12, 2003, 8:00 a.m.10:50 a.m.
Special Session on Hopf Algebras and Quantum Groups, I
Room 1302, Courant Building Organizers: M. Susan Montgomery, University of Southern California smontgom@math.usc.edu
Earl J. Taft, Rutgers University etaft@math.rutgers.edu
Sarah J. Witherspoon, Amherst College sjwitherspoon@amherst.edu

8:00 a.m.
Generalized Lie Solvability in Associative Algebras.
Yuri Bahturin*, Memorial University of Newfoundland
(9861679)

8:30 a.m.
On fusion categories.
Dmitri Nikshych*, University of New Hampshire
(9861698)

9:00 a.m.
Invariant Ideals of Abelian Group Algebras under the Multiplicative Action of a Division Ring.
J. M. Osterburg*, University of Cincinnati
D. S. Passman, University of Wisconsin, Madison
A. E. Zalesskii, University of East Anglia
(98616121)

9:30 a.m.
Splitting Morphisms of Bialgebras.
Alessandro Ardizzoni, Dipartimento di Matematica dell'Università di Ferr
Claudia Menini*, Dipartimento di Matematica dell'Università di Ferr
Dragos Stefan, University of Bucharest
(9861684)

10:00 a.m.
Hopf algebras of trees.
Marcelo Aguiar*, Texas A&M University
Frank Sottile, University of Massachusetts
(98616122)

10:30 a.m.
Cherchez la ... representative function.
Serban Raianu*, California State University, Dominguez Hills
(9861643)

Saturday April 12, 2003, 8:00 a.m.10:40 a.m.
Special Session on Galois Module Theory and Hopf Algebras, I
Room 813, Courant Building Organizers: Daniel R. Replogle, College of Saint Elizabeth dreplogle@CSE.edu
Robert G. Underwood, Auburn University underw@strudel.aum.edu

8:00 a.m.
NonCommutative Differential Forms in a Monoidal Category.
Alessandro Ardizzoni*, Dipartimento di Matematica dell'Università di Ferrara (Italy)
(9861847)

8:30 a.m.
Pure braided Hopf algebras.
Mihai D. Staic*, SUNY at Buffalo
(9861614)

9:00 a.m.
Support Spaces for finite group schemes.
Eric Friedlander, Northwestern
Julia Pevtsova*, IAS
(9861619)

9:30 a.m.
Hopf orders in cyclic group rings of order $p^3$ over local fields.
Lindsay N. Childs*, University at Albany
Robert G. Underwood, Auburn University Montgomery
(9861621)

10:20 a.m.
Chains of HopfSwan Subgroups.
Robert G Underwood*, Auburn University Montgomery
Daniel R Replogle, College of Saint Elizabeth
(9861117)

Saturday April 12, 2003, 8:15 a.m.10:45 a.m.
Special Session on Algebraic and Topological Combinatorics, I
Room 613, Courant Building Organizers: EvaMaria Feichtner, ETH, Zurich, Switzerland feichtne@math.ethz.ch
Dmitry N. Kozlov, University of Bern, Switzerland; and KTH, Stockholm, Sweden kozlov@math.ethz.ch

8:15 a.m.
Parabolic KazhdanLusztig and $R$polynomials for Hermitian symmetric pairs: the hyperoctahedral case.
Francesco Brenti*, Universita' di Roma "Tor Vergata"
(98605204)

8:55 a.m.
Positive formulae for quiver polynomials.
Allen Knutson*, UC Berkeley
Ezra Miller, MSRI
Mark Shimozono, Virginia Tech
(98614215)

9:35 a.m.
Hypertoric varieties.
Nicholas Proudfoot*, U.C. Berkeley
(98614161)

10:15 a.m.
On Corner Cut Polytopes.
Irene Mueller*, ETH Zuerich
(98605129)

Saturday April 12, 2003, 8:25 a.m.10:55 a.m.
Special Session on LowDimensional Topology, I
Room 810, Main Building Organizers: James Conant, Cornell University jconant@polygon.math.cornell.edu
Slava Krushkal, University of Virginia krushkal@virginia.edu
Rob Schneiderman, NYUCourant Institute schneid@cims.nyu.edu

8:25 a.m.
Normal Surface Theory, SL(2,C)Character Varieties and Quantum Invariants.
Charles D Frohman*, The University of Iowa
(9865742)

9:15 a.m.
Derived group of a link group: three applications.
Jozef H. Przytycki*, GWU
Mieczyslaw K. Dabkowski, GWU
(98657221)

10:05 a.m.
The Kontsevich Integral and the multivariable Alexander polynomial.
Andrew J Kricker*, University of Toronto
(98657118)

10:35 a.m.
On relations between string topology and Conway skein theory.
Uwe Kaiser*, Boise State University
(98657124)

Saturday April 12, 2003, 8:30 a.m.10:50 a.m.
Special Session on Analytical and Computational Methods in Electromagnetics, I
Room 102, Courant Building Organizers: Alexander P. Stone, University of New Mexico astone@math.unm.edu
Peter A. McCoy, U. S. Naval Academy pam@usna.edu

8:30 a.m.
Asymptotic Theory of Dispersive Pulse Dynamics in Causal Media.
Kurt E. Oughstun*, University of Vermont
(98678235)

9:00 a.m.
New Problem Formulation for EM Pulses in Dispersion Models.
Tom Roberts*, Air Force Research Laboratory
(98678144)

9:30 a.m.
Integration in the Complex Plane Associated with Ultrawideband Electromagnetics.
Eric L Mokole*, Radar Division, Naval Research Laboratory
Suren N Samaddar, SFA, Inc.
(9867823)

10:00 a.m.
Application of Mathematical and Physical Concepts to the Maxwell Equations.
Carl E Baum*, Air Force Research Laboratory
(98678102)

10:30 a.m.
AFOSR Basic Research Projects in Electromagnetics.
Arje Nachman*, AFOSR
(98678128)

Saturday April 12, 2003, 8:50 a.m.11:00 a.m.
Special Session on Rigidity in Dynamics, Geometry, and Group Theory, I
Room 408, Main Building Organizers: David Fisher, CUNY, Herbert H. Lehman College dfisher@alpha.lehman.cuny.edu
Steven E. Hurder, University of Illinois at Chicago
Kevin M. Whyte, University of Illinois at Chicago

8:50 a.m.
Differentiable rigidity of partially hyperbolic actions of higherrank abelian groups.
Anatole Katok*, The Pennsylvania State University
(98637231)

9:40 a.m.
Rigidity for Expanding Actions on Compact Manifolds.
Travis Fisher*, Penn State
(98637175)

10:10 a.m.
Smoothness of small conjugacies and rigidity of standard actions of rank one lattices.
Theron J Hitchman*, University of Michigan
(98637182)

10:40 a.m.
Connectivity invariants of group actions.
Ross Geoghegan*, Binghamton University
(98655146)

Saturday April 12, 2003, 9:00 a.m.10:50 a.m.
Special Session on Combinatorial and Statistical Group Theory, I
Room 1013, Courant Building Organizers: Alexei Myasnikov, City College, New York alexeim@att.net
Vladimir Shpilrain, City College, New York shpil@groups.sci.ccny.cuny.edu

9:00 a.m.
Random Dehn functions of groups.
Mark Sapir*, Vanderbilt University
(98620158)

9:30 a.m.
The Conjugacy problem and group embeddings.
Alexander Yu. Olshanskii*, Vanderbilt University
Mark Y Sapir, Vanderbilt University
(98620166)

10:00 a.m.
Algorithms for fully residually free groups.
Olga Kharlampovich*, McGill University
(9862085)

Saturday April 12, 2003, 9:00 a.m.10:50 a.m.
Special Session on Algebraic Geometry, Integrable Systems, and Gauge Theory, I
Room 513, Courant Building Organizers: Marcos Jardim, University of Massachusetts, Amherst jardim@math.umass.edu
Eyal Markman, University of Massachusetts, Amherst markman@math.umass.edu

9:00 a.m.
Hyperkahler integrable systems arising from hyperplane arrangements.
Michael Thaddeus*, Columbia University
(98632185)

9:40 a.m.
$G$Higgs bundles and surface group representations.
Oscar GarciaPrada*, CSIC, Madrid, Spain
(98651180)

10:20 a.m.
A FourierMukai transform for circle fibrations.
James F. Glazebrook*, Eastern Illinois University
Marcos Jardim, University of Massachusetts at Amherst
Franz W. Kamber, University of Illinois at UrbanaChampaign
(98658142)

Saturday April 12, 2003, 9:00 a.m.10:50 a.m.
Special Session on the History of Mathematics, I
Room 414, Main Building Organizers: Patricia R. Allaire, Queensborough Community College, CUNY pallaire@qcc.cuny.edu
Robert E. Bradley, Adelphi University bradley@adelphi.edu

9:30 a.m.
Circles in Old Babylonian mathematics.
Duncan J. Melville*, St. Lawrence University
(98601190)

10:00 a.m.
Philolaus and the mathematical philosophy of the Pythagoreans.
Hardy Grant*, York University, Toronto
(9860149)

10:30 a.m.
Enrico Mart\'\i nez in Context.
Erin Smith*, Roger Williams University
Bruce Burdick, Roger Williams University
(98601228)

Saturday April 12, 2003, 9:00 a.m.10:50 a.m.
Special Session on Topological Aspects of Complex Singularities, I
Room 401, Main Building Organizers: Sylvain E. Cappell, NYUCourant Institute cappell@cims.nyu.edu
Walter D. Neumann, Barnard College, Columbia University neumann@math.columbia.edu
Agnes Szilard, Barnard College, Columbia University szilard@math.columbia.edu

9:00 a.m.
Calculations of the CassonCurtis SL(2,C) invariant.
Hans Boden*, McMaster University
(98657209)

9:30 a.m.
Donaldson invariants of mapping tori.
Daniel Ruberman, Brandeis University
Nikolai Saveliev*, University of Miami
(9865758)

10:00 a.m.
Polynomial knots.
Alan H Durfee*, Mt Holyoke College
(98657169)

10:30 a.m.
Real Singularities and Openbook Decompositions of the 3Sphere.
Anne Pichon*, Institut de Mathématiques de Luminy, Marseille, France
José Seade, Instituto de Matem\'aticas, Unidad Cuernavaca
(98614168)

Saturday April 12, 2003, 9:00 a.m.10:50 a.m.
Special Session on Contact and Symplectic Geometry, I
Room 411, Main Building Organizers: John B. Etnyre, University of Pennsylvania etnyre@math.upenn.edu
Joshua M. Sabloff, University of Pennsylvania sabloff@math.upenn.edu

9:00 a.m.
Neighborhoods of configurations of symplectic surfaces in symplectic 4manifolds.
David T Gay*, University of Arizona
(98657111)

9:30 a.m.
Four dimensions from two in symplectic topology.
Margaret F Symington*, Georgia Institute of Technology
(98657117)

10:00 a.m.
Contact SU(2) actions.
Christopher B Willett*, Indiana University
(9865352)

10:30 a.m.
Distinguishing the Chambers of the Moment Polytope.
Rebecca F Goldin*, George Mason University
Tara Holm, University of CA, Berkeley
Lisa Jeffrey, University of Toronto
(98651183)

Saturday April 12, 2003, 9:00 a.m.10:55 a.m.
Session for Contributed Papers, I
Room 802, Main Building

9:00 a.m.
Ordered Trees (and Forests) Invariant Under a HalfTurn.
David J Halitsky*, Cumulative Inquiry Inc
Robert E Jamison, Clemson University
(9860632)

9:15 a.m.
Hypergeometrics, Linear Forms involving Logarithms, and Irrationality Criteria for Euler's Constant.
Jonathan Sondow*, New York, NY
(98611163)

9:30 a.m.
On cosets of the unit loop of integral octonions.
Mohammed Abouzaid, University of Chicago
Jarod Alper, Max Planck Institute for Mathematics
Steve DiMauro, Boston College
Justin Grosslight, Stanford University
Derek Smith*, Lafayette College
(98617217)

10:15 a.m.
On the Nitsche's conjecture for harmonic mappings in $\Bbb R^2$ and $\Bbb R^3$.
David Martin Kaljaj*, Podgorica,Serbia and Montenegro
(9863107)

10:30 a.m.
A New Asymptotic Series for the Gamma Function.
Xiquan Shi*, Delaware State University
Fengshan Liu, Delaware State University
(9863315)

10:45 a.m.
Limited Newton's Step Algorithm for Convex Programming Problems with Linear Constraints.
Yixun Shi*, Bloomsburg University of Pennsylvania
(98665135)

Saturday April 12, 2003, 9:10 a.m.11:00 a.m.
Special Session on Nonlinear Partial Differential Equations in Differential Geometry, I
Room 804, Main Building Organizers: John C. Loftin, Columbia University loftin@math.columbia.edu
MuTao Wang, Columbia University mtwang@math.columbia.edu

9:10 a.m.
Singular Real Projective SurfacesAn Analytic Approach.
John C. Loftin*, Columbia
(98653149)

9:50 a.m.
Analysis of Geometric Stability.
T Sean Paul*, Columbia University
Gang Tian, M.I.T.
(98632223)

10:30 a.m.
An Isoperimetric Estimate for the Ricci Flow.
Xiaodong Cao*, Columbia University
(98653212)

Saturday April 12, 2003, 9:30 a.m.10:50 a.m.
Special Presentation: Part I
TA development using case studies: A workshop for faculty.
Room 101, Courant Building
Presenters:
Diane Herrmann, University of Chicago

Saturday April 12, 2003, 11:10 a.m.12:00 p.m.
Invited Address
Mathematical aspects of financial risk.
Room 109, Courant Building
Hans Foellmer*, Humboldt University Berlin
(9866001)

Saturday April 12, 2003, 1:30 p.m.2:20 p.m.
Invited Address
Legendrian Knots.
Room 109, Courant Building
John Etnyre*, University of Pennsylvania
(9865704)

Saturday April 12, 2003, 2:30 p.m.5:50 p.m.
Special Session on Hopf Algebras and Quantum Groups, II
Room 1302, Courant Building Organizers: M. Susan Montgomery, University of Southern California smontgom@math.usc.edu
Earl J. Taft, Rutgers University etaft@math.rutgers.edu
Sarah J. Witherspoon, Amherst College sjwitherspoon@amherst.edu

2:30 p.m.
About copointed Hopf algebras.
Luzius Grunenfelder*, Dalhousie University
Mitja Mastnak, Dalhousie University
(98616123)

3:00 p.m.
On bimeasuring.
Luzius Grunenfelder, Dalhousie University
Mitja Mastnak*, Dalhousie University
(9861668)

3:30 p.m.
The coradical of the dual of a lifting of a quantum plane.
N. Andruskiewitsch, Universidad Nacional de Cordoba
M. Beattie*, Mount Allison University
(9861674)

4:00 p.m.
Onesided Hopf algebra within the framework of quantum groups.
Suemi RodríguezRomo*, Universidad Nacional Autonoma de Mexico
Earl Taft, Rutgers University
(9860854)

4:30 p.m.
Coordinate differential calculi defined by YB operators.
Vladislav Kirillovich Kharchenko*, FESCuautitlan, UNAM
(9861636)

5:00 p.m.
On Oriented Quantum Algebras Derived from Representations of the Quantum Double of a FiniteDimensional Hopf Algebra.
David E. Radford*, University of Illinois at Chicago
(98616106)

5:30 p.m.
Quantum Symmetry, II.
Murray Gerstenhaber*, University of Pennsylvania
(98681119)

Saturday April 12, 2003, 2:30 p.m.5:50 p.m.
Special Session on Combinatorial and Statistical Group Theory, II
Room 1013, Courant Building Organizers: Alexei Myasnikov, City College, New York alexeim@att.net
Vladimir Shpilrain, City College, New York shpil@groups.sci.ccny.cuny.edu

2:30 p.m.
A solution of MAGNUS FP15.
Charles F. Rocca, Western Connecticut State University
Edward C Turner*, SUNY Albany
(9862089)

3:00 p.m.
Stable Numerical Invariants.
Richard Z Goldstein*, University at Albany
(9862056)

3:30 p.m.
Counting conjugacy classes.
Igor Rivin*, Temple University
(98620173)

4:00 p.m.
Generic properties of the Whitehead Algorithm, of stabilizers in $Aut(F_k)$ and of onerelator groups.
Ilya Kapovich*, University of Illinois at UrbanaChampaign
Paul E. Schupp, University of Illinois at UrbanaChampaign
Vladimir Shpilrain, City College of CUNY
(98620103)

4:30 p.m.
Growth of the BaumslagSolitar group BS(2,3).
Briana Cook, Southern Utah University
Eric M Freden*, Southern Utah University
Alisha McCann, Southern Utah University
(98620159)

5:00 p.m.
On some problems of the theory of group varieties.
Sergei V Ivanov*, University of Illinois at UrbanaChampaign
(98620200)

5:30 p.m.
Some New Classes of Groups with Solvable Quadratic Equation Problems.
Martin Greendlinger*, Art Institute of Philadelphia
Elena Greendlinger, Community College of Philadelphia
(9862031)

Saturday April 12, 2003, 2:30 p.m.5:40 p.m.
Special Session on Algebraic Geometry, Integrable Systems, and Gauge Theory, II
Room 513, Courant Building Organizers: Marcos Jardim, University of Massachusetts, Amherst jardim@math.umass.edu
Eyal Markman, University of Massachusetts, Amherst markman@math.umass.edu

2:30 p.m.
Commuting partial differential operators.
Emma Previato*, IAS and Boston University
(98614198)

3:10 p.m.
From Klein to Painleve via Fourier and Laplace.
Philip P Boalch*, Columbia University, New York
(9863455)

3:50 p.m.
A Generalized Mukai Product and the Orbifold Cohomology Ring.
Andrei H Caldararu*, University of Pennsylvania
(98614153)

4:30 p.m.
NahmMukai transform for instantons over ALE 4manifolds.
Claudio Bartocci*, Universita degli Studi di Genova
Marcos Jardim, University of Massachusetts Amherst
(98653238)

5:10 p.m.
Twisted FourierMukai transforms for holomorphic symplectic manifolds.
Justin Sawon*, SUNY at Stony Brook
(9861467)

Saturday April 12, 2003, 2:30 p.m.5:20 p.m.
Special Session on the History of Mathematics, II
Room 414, Main Building Organizers: Patricia R. Allaire, Queensborough Community College, CUNY pallaire@qcc.cuny.edu
Robert E. Bradley, Adelphi University bradley@adelphi.edu

2:30 p.m.
Mario Pieri's role in the history of algebraic geometry and foundations of mathematics  a work in progress.
Elena Anne Marchisotto*, California State University
(98601150)

3:00 p.m.
William Fogg Osgood's 1897 Paper on NonUniform Convergence.
Lawrence D'Antonio*, Ramapo College of New Jersey
(9860191)

3:30 p.m.
Charles L. Dodgson's Memoria Technica Cipher.
Francine F. Abeles*, Kean University
(9860177)

4:00 p.m.
Shifts in time: cryptography and randomness.
Sven Dietrich*, Carnegie Mellon University
(98601219)

4:30 p.m.
Wu's Amazing Geometry Theorem Proving Machine.
Ronald I Sklar*, St. John's University
Ronald W. Fechter, St. John's University
(9860110)

5:00 p.m.
History (19471999) of Some Evolution Partial Differential Equations: Decay of solutions for some nonlinear, dispersive wave equations.
Robert L Luo*, The Richard Stockton College of New Jersey
(9863594)

Saturday April 12, 2003, 2:30 p.m.5:30 p.m.
Special Session on Algebraic and Topological Combinatorics, II
Room 613, Courant Building Organizers: EvaMaria Feichtner, ETH, Zurich, Switzerland feichtne@math.ethz.ch
Dmitry N. Kozlov, University of Bern, Switzerland; and KTH, Stockholm, Sweden kozlov@math.ethz.ch

2:30 p.m.
Realization of Abelian groups by complex plane nets.
Sergey Yuzvinsky*, University of Oregon
(98614141)

3:05 p.m.
Gram matrices from Steinberg lattices and hyperplane arrangements.
Graham Denham*, University of Western Ontario
Nicole Lemire, University of Western Ontario
(98620224)

3:45 p.m.
Combinatorics of real and complex models of arrangements.
Giovanni Gaiffi*, Scuola Normale Superiore di Pisa
(9865296)

4:25 p.m.
Fundamental groups of complex hyperplane arrangements.
Alexander I. Suciu*, Northeastern University
(98620232)

5:00 p.m.
Complexity of the motion planning problem in the real projective space.
Serge Tabachnikov*, Penn State
Michael Farber, Tel Aviv University
Sergei Yuzvinsky, University of Oregon
(9865593)

Saturday April 12, 2003, 2:30 p.m.5:10 p.m.
Special Session on Galois Module Theory and Hopf Algebras, II
Room 813, Courant Building Organizers: Daniel R. Replogle, College of Saint Elizabeth dreplogle@CSE.edu
Robert G. Underwood, Auburn University underw@strudel.aum.edu

2:30 p.m.
Stickelberger factorization and local decomposition of resolvends. Preliminary report.
Leon R McCulloh*, University of Illinois, UrbanaChampaign
(9861126)

3:20 p.m.
Cyclotomic Swan Subgroups and Primitive Roots.
Timothy Kohl, Boston University
Daniel R Replogle*, College of Saint Elizabeth
(9861105)

3:50 p.m.
Galois module structure of units in real biquadratic number fields.
Marcin Mazur*, Binghamton University
Stephen V Ullom, University of Illinois at UrbanaChampaign
(9861122)

4:20 p.m.
Counting Hopf Galois Structures on Dihedral and Quaternionic Extensions.
Timothy Kohl*, Boston University
(9861625)

4:50 p.m.
Abelian HopfGalois Structures on Galois Field Extensions of Prime powered Order.
Stephen C Featherstonhaugh*, Univeristy at Albany
(9860829)

Saturday April 12, 2003, 2:30 p.m.5:00 p.m.
Special Session on Analytical and Computational Methods in Electromagnetics, II
Room 102, Courant Building Organizers: Alexander P. Stone, University of New Mexico astone@math.unm.edu
Peter A. McCoy, U. S. Naval Academy pam@usna.edu

2:30 p.m.
Shape deformations in rough surface scattering: cancellations, conditioning, and improved algorithms.
Fernando Reitich*, University of Minnesota
(9867869)

3:00 p.m.
Solution of the Time Domain Electric Field Integral Equation Without the Time Variable.
Tapan K Sarkar*, Syracuse University
(98645109)

3:30 p.m.
An SMatrix Based Hybrid Method.
Gregory A Kriegsmann*, New Jersey Institute of Technology
(9867864)

4:00 p.m.
On the longtime behavior of unsplit Perfectly Matched Layers.
Eliane Becache, INRIARocquencourt
Peter G. Petropoulos*, New Jersey Institute of Technology
Stephen D. Gedney, Department of Electrical and Computer Engineering,
(9867861)

4:30 p.m.
The secret lives of complexsource pulsed beams: Their source distributions in the spacetime and Fourier domains.
Gerald Kaiser*, Virginia Center for Signals and Waves
(98678126)

Saturday April 12, 2003, 2:30 p.m.5:30 p.m.
Special Session on Rigidity in Dynamics, Geometry, and Group Theory, II
Room 408, Main Building Organizers: David Fisher, CUNY, Herbert H. Lehman College dfisher@alpha.lehman.cuny.edu
Steven E. Hurder, University of Illinois at Chicago
Kevin M. Whyte, University of Illinois at Chicago

2:30 p.m.
The second cohomology of G with RG coefficients, and the structure of G.
Bruce A Kleiner*, University of Michigan, Ann Arbor
(98620105)

3:00 p.m.
Almost isometric actions, property T and local rigidity.
David M Fisher*, Lehman College CUNY
G A Margulis, Yale University
(98637170)

3:30 p.m.
Volumes of representations.
Bruno Klingler*, Yale University
(98620230)

4:10 p.m.
Finiteness of compact maximal flats of volume less than a given number.
Hee Oh*, Institute for Advanced Study
(98622133)

4:40 p.m.
Rigidity of surface group extensions.
Lee Mosher*, Rutgers University  Newark
(98620197)

5:10 p.m.
A simple description of the Riemannian symmetric spaces of rank one.
Adam Koranyi*, H. H. Lehman College
(9865311)

Saturday April 12, 2003, 2:30 p.m.5:20 p.m.
Special Session on Contact and Symplectic Geometry, II
Room 411, Main Building Organizers: John B. Etnyre, University of Pennsylvania etnyre@math.upenn.edu
Joshua M. Sabloff, University of Pennsylvania sabloff@math.upenn.edu

2:30 p.m.
Polynomials for Legendrian Links.
Lisa Traynor*, Bryn Mawr College
Lenny Ng, Stanford University
(9865887)

3:00 p.m.
Knot and Braid Invariants from Contact Homology.
Lenhard Ng*, AIM and Stanford University
(9865788)

3:30 p.m.
Knots and contact geometry.
Ko Honda*, University of Southern California
(9865333)

4:00 p.m.
Open Book Decompositions and Contact Structures.
Noah D Goodman*, University of Texas at Austin
(98654178)

4:30 p.m.
Classifying tight contact structures on Seifert fibered spaces.
Stephan Schoenenberger*, University of Pennsylvania
(9865160)

5:00 p.m.
On the contactomorphism group of 3manifolds.
Nadya Shirokova*, Institute for Advanced Study
(98657194)

Saturday April 12, 2003, 2:30 p.m.5:40 p.m.
Special Session on Nonlinear Partial Differential Equations in Differential Geometry, II
Room 804, Main Building Organizers: John C. Loftin, Columbia University loftin@math.columbia.edu
MuTao Wang, Columbia University mtwang@math.columbia.edu

2:30 p.m.
Stability for the Kahler Ricci Flow on complete noncompact Kahler manifolds.
Albert Chau*, Harvard University
Oliver C. Schnuerer, Max Planck Institute for Mathematics
(98653237)

3:10 p.m.
A fully nonlinear equation on 4manifolds with positive scalar curvature.
Jeff A. Viaclovsky*, MIT
(98653236)

3:50 p.m.
Infinite boundary value problem for MongeAmpere equations.
Bo Guan*, University of Tennessee
Huaiyu Jian, Tsinghua University
(98635233)

4:30 p.m.
Differential Harnack Estimates in the Ricci Flow.
Bing Cheng*, Harvard University
(98653202)

5:10 p.m.
On the $L^2$ cohomology of convex cocompact hyperbolic manifolds.
Xiaodong Wang*, M.I.T.
(98653167)

Saturday April 12, 2003, 2:30 p.m.5:40 p.m.
Special Session on LowDimensional Topology, II
Room 810, Main Building Organizers: James Conant, Cornell University jconant@polygon.math.cornell.edu
Slava Krushkal, University of Virginia krushkal@virginia.edu
Rob Schneiderman, NYUCourant Institute schneid@cims.nyu.edu

2:30 p.m.
Ribbon concodance and higher order Arf invariants.
Kent E Orr*, Indiana University Bloomington
Tim D Cochran, Rice University
(98657188)

3:20 p.m.
Holomorphic disks and knot invariants.
Peter Steven Ozsvath*, Columbia University
Zoltan Szabo, Princeton University
(98657186)

4:10 p.m.
Geometric simple connectivity in high dimensions in connection with problems in low dimensional topology.
V. Poenaru*, Universite' de ParisSud Centre d'Orsay
(98657152)

5:00 p.m.
Attempts to prove the surgery conjecture for 4manifolds.
Frank Quinn*, Virginia Tech
Slava Krushkal, University of Virginia
(9865762)

Saturday April 12, 2003, 2:30 p.m.4:10 p.m.
Session for Contributed Papers, II
Room 802, Main Building

2:30 p.m.
The Inverse Periodic Spectral Theory of the EulerBernoulli Equation I: The ``Perfect Square'' Case.
Vassilis G Papanicolaou*, National Technical University of Athens
(9863446)

2:45 p.m.
Riesz Transforms Associated with the Laguerre Polynomials.
Andrew J Incognito*, Coastal Carolina University
(9864257)

3:00 p.m.
Isomorphisms of R Sequences.
Andrew B Perry*, Springfield College
(9864639)

3:15 p.m.
An approach to DvoretzkyRogers theorem via Hadamard matrices.
Nicholas Nicholas Vakhania*, Institute of Computational Mathematics, Georgian Academy of Sciences
Vakhtang Varlam Kvaratskhelia, Institute of Computational Mathematics, Georgian Academy of Sciences
(9864640)

3:30 p.m.
Some Approximations to the Distribution of the Least Squares Estimator of the Autoregressive Parameter in AR(1) Model.
Leslie Chandrakantha*, John Jay College/CUNY
(9866263)

3:45 p.m.
The Kinematical Rotations of Nparticle Hyperspherical basis. Construction of Symmetrized Basic Hyperspherical Functions.
Lia Leon ChachanidzeMargolin*, K. Gibbs College, New York, NY
Nina Boris Krupennikova, Moscow State University
(9867012)

Saturday April 12, 2003, 2:30 p.m.4:30 p.m.
Special Presentation: Part II
TA development using case studies: A workshop for faculty.
Room 101, Courant Building
Presenters:
Diane Herrmann, University of Chicago

Saturday April 12, 2003, 3:00 p.m.6:00 p.m.
Special Session on Topological Aspects of Complex Singularities, II
Room 401, Main Building Organizers: Sylvain E. Cappell, NYUCourant Institute cappell@cims.nyu.edu
Walter D. Neumann, Barnard College, Columbia University neumann@math.columbia.edu
Agnes Szilard, Barnard College, Columbia University szilard@math.columbia.edu

3:00 p.m.
The link of $\{f(x,y)+z^n=0\}$ and Zariski's conjecture.
R Mendris*, The Ohio State University
A Nemethi, The Ohio State University
(9863282)

3:30 p.m.
Normal surface singularities and the SeibergWitten invariant.
Andras Nemethi*, The Ohio State University
(98632176)

4:00 p.m.
Complete intersection singularities of splice type.
Walter D Neumann, Barnard College, Columbia University
Jonathan Wahl*, University of North Carolina
(98657192)

4:30 p.m.
The Casson Invariant Conjecture.
Walter D Neumann*, Barnard College, Columbia University
Jonathan Wahl, University of North Carolina
(98657191)

5:00 p.m.
Rho invariants of Seifert fibered manifolds.
Edward Y. Miller*, Brooklyn Polytechnic University
(98657239)

5:30 p.m.
Problem session
Sunday April 13, 2003

Sunday April 13, 2003, 8:00 a.m.12:00 p.m.
Meeting Registration
Lobby, Courant Building

Sunday April 13, 2003, 8:00 a.m.10:50 a.m.
Special Session on Hopf Algebras and Quantum Groups, III
Room 1302, Courant Building Organizers: M. Susan Montgomery, University of Southern California smontgom@math.usc.edu
Earl J. Taft, Rutgers University etaft@math.rutgers.edu
Sarah J. Witherspoon, Amherst College sjwitherspoon@amherst.edu

8:00 a.m.
CoFrobenius Hopf algebras and the coradical filtration.
N. Andruskiewitsch, University of Cordoba
S. Dascalescu*, Kuwait University
(9861635)

8:30 a.m.
Generalized cocommutative elements and Nakayama automorphisms.
Miriam Cohen*, BenGurion University
Sara Westreich, BarIlan University
(98616115)

9:00 a.m.
Higher FrobeniusSchur indicators.
Yorck Sommerhäuser*, Universität München
(98616116)

9:30 a.m.
Semisimple Hopf algebras of dimension $p^n$.
Yevgenia Kashina*, DePaul University
Mark Kleiner, Syracuse University
(9861697)

10:00 a.m.
Semisimplicity of Hopf Algebra of Dimension $pq$.
SiuHung Ng*, Towson University
(9861686)

10:30 a.m.
Quantum lines over noncocommutative cosemisimple Hopf algebras.
Corina Calinescu*, Rutgers University, New Brunswi
Sorin Dascalescu, Kuwait University
Akira Masuoka, University of Tsukuba
Claudia Menini, Ferrara University
(9861651)

Sunday April 13, 2003, 8:00 a.m.10:50 a.m.
Special Session on Combinatorial and Statistical Group Theory, III
Room 1013, Courant Building Organizers: Alexei Myasnikov, City College, New York alexeim@att.net
Vladimir Shpilrain, City College, New York shpil@groups.sci.ccny.cuny.edu

8:00 a.m.
Geodesics in the Braid Group on Three Strands and a Related Group.
Lucas A Sabalka*, U. of Illinois at ChampaignUrbana
(98620160)

8:30 a.m.
A Wilson group of nonuniformly exponential growth.
Laurent Bartholdi*, U. C. Berkeley
(98620127)

9:00 a.m.
Nonpositive immersions, local indicability and coherence.
Daniel T. Wise*, McGill University
(98657164)

9:30 a.m.
Uniform nonamenability.
Enric Ventura*, Universitat Politècnica de Catalunya
(9862083)

10:00 a.m.
Removable Pairs in Trivial Braid Words.
Patrick Dehornoy*, Universite de Caen
(98620136)

10:30 a.m.
On the coherence of coherentbycyclic groups.
Inna Bumagin*, McGill University
Daniel T Wise, McGill University
(98620181)

Sunday April 13, 2003, 8:00 a.m.12:00 p.m.
Exhibit and Book Sale
13th Floor Lounge, Courant Building

Sunday April 13, 2003, 8:15 a.m.10:45 a.m.
Special Session on Algebraic and Topological Combinatorics, III
Room 613, Courant Building Organizers: EvaMaria Feichtner, ETH, Zurich, Switzerland feichtne@math.ethz.ch
Dmitry N. Kozlov, University of Bern, Switzerland; and KTH, Stockholm, Sweden kozlov@math.ethz.ch

8:15 a.m.
Topological properties of active orders for matroid bases.
Bruce E Sagan*, Michigan State University
Rieuwert J Blok, Michigan State University
(9860670)

8:55 a.m.
The noperfectmatching complex and related complexes.
Svante Linusson, Link\"oping University
John Shareshian*, Washington University
Michelle Wachs, University of Miami
Volkmar Welker, PhilippsUniversit\"at Marburg
(98605193)

9:35 a.m.
Maps and graph colorings.
Erik K. Babson*, University of Washington, Seattle
Dmitry Kozlov, KTH
(98605216)

10:15 a.m.
Topological questions on nonEuclidean oriented matroids.
Laura M Anderson*, Binghamton University
(98605225)

Sunday April 13, 2003, 8:30 a.m.11:00 a.m.
Special Session on Algebraic Geometry, Integrable Systems, and Gauge Theory, III
Room 513, Courant Building Organizers: Marcos Jardim, University of Massachusetts, Amherst jardim@math.umass.edu
Eyal Markman, University of Massachusetts, Amherst markman@math.umass.edu

8:30 a.m.
Cohomology rings of symplectic quotients.
Lisa Claire Jeffrey*, University of Toronto
(98658108)

9:10 a.m.
Classical geometry and Painleve VI.
Nigel J Hitchin*, Oxford University
(98614157)

9:50 a.m.
Elliptic Sklyanin integrable systems.
Jacques Hurtubise*, McGill and CRM
Eyal Markman, U. Massachusetts
(98614143)

10:30 a.m.
Discussion

Sunday April 13, 2003, 8:30 a.m.10:50 a.m.
Special Session on Analytical and Computational Methods in Electromagnetics, III
Room 102, Courant Building Organizers: Alexander P. Stone, University of New Mexico astone@math.unm.edu
Peter A. McCoy, U. S. Naval Academy pam@usna.edu

8:30 a.m.
The inverse electromagnetic scattering problem for screens.
Fioralba Cakoni*, University of Delaware
(9863575)

9:00 a.m.
Numerical Simulation of Electromagnetic Fields in a Complex, TwoDimensional Rectangular Cavity.
Terence J. Wieting*, US Naval Research Laboratory
Dong Ho Wu, US Naval Research Laboratory
Louis F. Libelo, SFA, Inc.
Michael I. Haftel, US Naval Research Laboratory
Jeff Braunstein, Rensselaer Polytechnic Institute
(98678227)

10:00 a.m.
A DiffertentialGeometric Method in Electromagnetic Lens Design.
Alexander P Stone*, University of New Mexico
(98678104)

10:30 a.m.
Artificial Boundary Conditions for the Numerical Simulation of Unsteady Waves Governed by Vector Models.
Semyon V Tsynkov*, North Carolina State University
(98665120)

Sunday April 13, 2003, 8:30 a.m.10:50 a.m.
Special Session on Topological Aspects of Complex Singularities, III
Room 401, Main Building Organizers: Sylvain E. Cappell, NYUCourant Institute cappell@cims.nyu.edu
Walter D. Neumann, Barnard College, Columbia University neumann@math.columbia.edu
Agnes Szilard, Barnard College, Columbia University szilard@math.columbia.edu

8:30 a.m.
On the embedded resolution of cyclic surface singularities.
Agnes Szilard*, Barnard College, Columbia University
(98614214)

9:00 a.m.
Recent progress in the study of some nonisolated singularities.
Lee J. McEwan*, The Ohio State University
(98614179)

9:30 a.m.
On Hodge spectrum and multiplier ideals.
Nero Budur*, University of Illinois at Chicago
(9861434)

10:00 a.m.
Stringy invariants for general singularities.
Willem Veys*, University of Leuven
(9861495)

10:30 a.m.
Calculating Euler Characteristics of Vanishing Cycles.
David B. Massey*, Northeastern University
(9863266)

Sunday April 13, 2003, 8:30 a.m.10:50 a.m.
Special Session on Contact and Symplectic Geometry, III
Room 411, Main Building Organizers: John B. Etnyre, University of Pennsylvania etnyre@math.upenn.edu
Joshua M. Sabloff, University of Pennsylvania sabloff@math.upenn.edu

8:30 a.m.
Fillings by pseudoholomorphic curves and the Chord Problem in Contact Geometry.
Casim Abbas*, Michigan State University
(9865337)

9:00 a.m.
Counting pseudoholomorphic curves in fourmanifolds.
Michael Hutchings, UC Berkeley
Michael Sullivan*, University of Michigan
(9865345)

9:30 a.m.
Contact homology, contact embeddings and a partial order of contactomorphisms.
Sang Seon Kim*, University of Southern California
(98653156)

10:00 a.m.
Unknottedness of Lagrangian tori in the standard symplectic ${\mathbb R}^4$.
Alexander Ivrii*, Stanford University
(98653201)

10:30 a.m.
Fredholm Theory and Transversality for Noncompact Pseudoholomorphic Curves in Symplectizations.
Dragomir L Dragnev*, University of Southern California
(9865848)

Sunday April 13, 2003, 8:30 a.m.11:00 a.m.
Special Session on Nonlinear Partial Differential Equations in Differential Geometry, III
Room 405, Main Building Organizers: John C. Loftin, Columbia University loftin@math.columbia.edu
MuTao Wang, Columbia University mtwang@math.columbia.edu

8:30 a.m.
Remarks on a Class of Solutions to the Minimal Surface System.
MuTao Wang*, Columbia University
(98653137)

9:10 a.m.
Analytic properties of harmonic maps into Teichmuller spaces.
Sumio Yamada*, University of Alabama at Birmingham
(98658145)

9:50 a.m.
Special Lagrangian Submanifolds with Boundary and Lagrangian Free Boundary Plateau Problem.
Weiyang Qiu*, Harvard University
(98653140)

10:30 a.m.
Deformations of $G_2$ Structures on Manifolds.
Spiro Karigiannis*, Harvard University
(98653139)

Sunday April 13, 2003, 8:45 a.m.11:00 a.m.
Special Session on the History of Mathematics, III
Room 414, Main Building Organizers: Patricia R. Allaire, Queensborough Community College, CUNY pallaire@qcc.cuny.edu
Robert E. Bradley, Adelphi University bradley@adelphi.edu

8:45 a.m.
A Golden Decade: Euler in Berlin, 1746  1756  A Preliminary Study.
Ronald S. Calinger*, Catholic University of America
(98601218)

9:30 a.m.
Euler's Solution of the Basel Problem  The Longer Story.
Ed Sandifer*, Western Connecticut State U
(9860165)

10:00 a.m.
Euler's AllPurpose Counterexample.
Robert E. Bradley*, Adelphi University
(98601206)

10:30 a.m.
d'Alembert's proof of the Fundamental Theorem of Algebra: mathematical issues.
Christopher Baltus*, SUNY College at Oswego
(9860150)

Sunday April 13, 2003, 8:50 a.m.11:00 a.m.
Special Session on Rigidity in Dynamics, Geometry, and Group Theory, III
Room 408, Main Building Organizers: David Fisher, CUNY, Herbert H. Lehman College dfisher@alpha.lehman.cuny.edu
Steven E. Hurder, University of Illinois at Chicago
Kevin M. Whyte, University of Illinois at Chicago

8:50 a.m.
Flats in outer space.
Karen Vogtmann*, Cornell University
(98620220)

9:40 a.m.
Quasiisometric rigidity for some nonuniform $S$arithmetic lattices.
Kevin Wortman*, University of Chicago
(98620210)

10:10 a.m.
Centralizers of Partially Hyperbolic Diffeomorphisms.
Lizzie Burslem*, University of Michigan
(98637226)

10:40 a.m.
Area preserving group actions on surfaces.
John Franks*, Northwestern University
Michael Handel, Lehman College, CUNY
(9863771)

Sunday April 13, 2003, 8:55 a.m.10:50 a.m.
Special Session on LowDimensional Topology, III
Room 810, Main Building Organizers: James Conant, Cornell University jconant@polygon.math.cornell.edu
Slava Krushkal, University of Virginia krushkal@virginia.edu
Rob Schneiderman, NYUCourant Institute schneid@cims.nyu.edu

8:50 a.m.
$A$polynomial and Bloch invariants of hyperbolic 3manifolds.
Abhijit Champanerkar*, Columbia University
(9865753)

9:20 a.m.
Lie bialgebras of curves on surfaces and their computation.
Moira Chas*, SUNY at Stony Brook
(98657165)

10:10 a.m.
Remarks on combinatorial Yamabe flows.
Feng Luo*, Rutgers University
(98657125)

Sunday April 13, 2003, 9:00 a.m.10:40 a.m.
Special Session on Galois Module Theory and Hopf Algebras, III
Room 813, Courant Building Organizers: Daniel R. Replogle, College of Saint Elizabeth dreplogle@CSE.edu
Robert G. Underwood, Auburn University underw@strudel.aum.edu

9:00 a.m.
Nearly perfect complexes and Weil étale cohomology.
David Burns*, King's College London, U.K.
(9861127)

9:50 a.m.
Structure of a Quantum Hyperalgebra.
W. Chin, DePaul University
L. Krop*, DePaul University
(9861641)

10:20 a.m.
Diagonalization of Representation Operators for the Quantum Algebra $U_q(su_{1,1})$.
N M Atakishiyev*, Instituto de Matematicas, UNAM
A U Klimyk, Instituto de Matematicas, UNAM
(9861630)

Sunday April 13, 2003, 11:10 a.m.12:00 p.m.
Invited Address
The Riemannian geometry of the 2Wasserstein metric and the nonlinear kinetic FokkerPlanck equation.
Room 109, Courant Building
Wilfrid Gangbo*, Georgia Institute of Technology
(9863503)

Sunday April 13, 2003, 1:30 p.m.2:20 p.m.
Invited Address
Asymptotic differential algebra.
Room 109, Courant Building
Matthias Aschenbrenner*, University of California Berkeley
(9860302)

Sunday April 13, 2003, 2:30 p.m.5:20 p.m.
Special Session on Hopf Algebras and Quantum Groups, IV
Room 1302, Courant Building Organizers: M. Susan Montgomery, University of Southern California smontgom@math.usc.edu
Earl J. Taft, Rutgers University etaft@math.rutgers.edu
Sarah J. Witherspoon, Amherst College sjwitherspoon@amherst.edu

2:30 p.m.
Invariants of Skew Derivations.
Jeffrey Bergen*, DePaul University
Piotr Grzeszczuk, Bialystok Technical Institute
(98616100)

3:00 p.m.
Representing relatively free coalgebras by formal sums.
Mikhail V. Kochetov*, University of Saskatchewan
(98616110)

3:30 p.m.
Divided power Hopf algebras over integral domains.
Richard E. Block*, University of California Riverside
(98613112)

4:00 p.m.
Local theory of almost split sequences for comodules.
William Chin*, DePaul University
Declan Quinn, Syracuse University
Mark Kleiner, Syracuse University
(9861692)

4:30 p.m.
QuasiHopf algebras, Hopf modules, and monoidal categories.
Peter Schauenburg*, Mathematisches Institut, University of Munich, Ger
(98616114)

5:00 p.m.
Schur Algebras and Enveloping Algebras.
Anthony Giaquinto*, Loyola University Chicago
(98616171)

Sunday April 13, 2003, 2:30 p.m.5:50 p.m.
Special Session on Combinatorial and Statistical Group Theory, IV
Room 1013, Courant Building Organizers: Alexei Myasnikov, City College, New York alexeim@att.net
Vladimir Shpilrain, City College, New York shpil@groups.sci.ccny.cuny.edu

2:30 p.m.
Recent developments in the theory of Fuchsian and Kleinian groups.
Gerhard Rosenberger*, Universit\"at Dortmund
(9862059)

3:00 p.m.
On NonTrivially Discriminating Groups.
Gilbert Baumslag, City University of New York
Benjamin Fine*, Fairfield University
Anthony M. Gaglione, United States Naval Academy
Dennis Spellman, Temple University
(98620203)

3:30 p.m.
Arithmetic properties of lattices in rank 2 KacMoody groups over finite fields.
Lisa Carbone*, Rutgers University
(9862081)

4:00 p.m.
Growth in semigroup varieties.
Lev M Shneerson*, Hunter College,The City University of New York
(98620155)

4:30 p.m.
A partial result on the complexity of Whitehead's algorithm.
Donghi Lee*, College of Staten Island, CUNY
(98620196)

5:00 p.m.
Groups generated by positive multitwists and the fake lantern problem.
Hessam HamidiTehrani*, New York, NY
(9862090)

5:30 p.m.
Groups of simultaneously even and ptype.
Inna A Korchagina*, Rutgers, The State University of NJ
(98620208)

Sunday April 13, 2003, 2:30 p.m.5:00 p.m.
Special Session on Algebraic Geometry, Integrable Systems, and Gauge Theory, IV
Room 513, Courant Building Organizers: Marcos Jardim, University of Massachusetts, Amherst jardim@math.umass.edu
Eyal Markman, University of Massachusetts, Amherst markman@math.umass.edu

2:30 p.m.
Supersymmetry and stability of Abranes.
Bobby Acharya, Rutgers University
Ron Donagi, University of Pennsylvania
Tony Pantev*, University of Pennsylvania
(98614195)

3:10 p.m.
Instantonic calculus, equivariant cohomology and partition function of topological N=2 super YangMills theory.
Ugo Bruzzo*, International School for Advanced Studies
(98681174)

3:50 p.m.
FourierMukai transform for noncommutative tori and mirror symmetry.
Alexander Polishchuk*, Boston University
(98614134)

4:30 p.m.
Differential Isomorphism and Equivalence of Algebraic Varieties.
Yuri Berest*, Cornell University
George Wilson, Imperial College
(98614213)

Sunday April 13, 2003, 2:30 p.m.3:50 p.m.
Special Session on the History of Mathematics, IV
Room 414, Main Building Organizers: Patricia R. Allaire, Queensborough Community College, CUNY pallaire@qcc.cuny.edu
Robert E. Bradley, Adelphi University bradley@adelphi.edu

2:30 p.m.
The Followers of Franklin.
Paul C. Pasles*, Villanova University
(9860144)

3:00 p.m.
The Mathematics Curriculum At West Point: The First Hundred Years.
V. Frederick Rickey, United States Military Academy
Amy ShellGellasch*, United States Military Academy
(9860138)

3:30 p.m.
Mathematical Aspects of Franz Reuleaux Kinematic Model Collection.
Daina Taimina*, Cornell University
(98601177)

Sunday April 13, 2003, 2:30 p.m.5:30 p.m.
Special Session on Rigidity in Dynamics, Geometry, and Group Theory, IV
Room 408, Main Building Organizers: David Fisher, CUNY, Herbert H. Lehman College dfisher@alpha.lehman.cuny.edu
Steven E. Hurder, University of Illinois at Chicago
Kevin M. Whyte, University of Illinois at Chicago

2:30 p.m.
On spaces of higher spherical rank.
Ralf J Spatzier*, University of Michigan
(98653211)

3:00 p.m.
The Properness Conjecture for 3Dimensional Affine Actions.
W. Goldman*, University of Maryland
F. Labourie, University of Paris, Sud
G. Margulis, Yale University
(98637130)

3:30 p.m.
Strong isospectrality for groups of Lorentzian transformations.
Todd A. Drumm*, Swarthmore College
Virginie Charette, University of Manitoba
William M. Goldman, University of Maryland
(9865173)

4:10 p.m.
Coding of geodesics on modular surfaces.
Svetlana Katok*, The Pennsylvania State University
(98620222)

4:40 p.m.
Cohomology of skew extensions of hyperbolic systems.
Dmitry Dolgopyat*, University of Maryland
(98637205)

5:10 p.m.
Topological Models of Simple Siegel Polynomials.
Gaofei Zhang*, The City University of New York
(9863728)

Sunday April 13, 2003, 2:30 p.m.3:50 p.m.
Special Session on Contact and Symplectic Geometry, IV
Room 411, Main Building Organizers: John B. Etnyre, University of Pennsylvania etnyre@math.upenn.edu
Joshua M. Sabloff, University of Pennsylvania sabloff@math.upenn.edu

2:30 p.m.
Symplectomorphism groups of toric manifolds.
Dusa McDuff*, Stony Brook University
(98653138)

3:00 p.m.
The HoferZehnder capacity near symplectic submanifolds.
Ely Kerman*, SUNY Stony Brook
(98637154)

3:30 p.m.
Locally conformal Dirac structures and infinitesimal automorphisms.
Aissa Wade*, The Pennsylvania University
(98653162)

Sunday April 13, 2003, 2:30 p.m.5:40 p.m.
Special Session on Nonlinear Partial Differential Equations in Differential Geometry, IV
Room 405, Main Building Organizers: John C. Loftin, Columbia University loftin@math.columbia.edu
MuTao Wang, Columbia University mtwang@math.columbia.edu

2:30 p.m.
Alexandrov type inequalities for CartanHadamard manifolds.
Joel Spruck*, Johns Hopkins University
(98635101)

3:10 p.m.
The Local Isometric Embedding Problem for 2Dimensional Riemannian Manifolds.
Marcus A. Khuri*, University of Pennsylvania
(98635172)

3:50 p.m.
A glueing theorem for the GinzburgLandau equations in higher dimensions.
Simon A Brendle*, Princeton University
(9865376)

4:30 p.m.
Almost Rigidity and Stability.
Christina Sormani*, Lehman College, CUNY
(98658189)

5:10 p.m.
Mean Curvature Flows and Homotopy of Maps Between Spheres.
MaoPei Tsui*, Columbia University
(98653148)

Sunday April 13, 2003, 2:30 p.m.4:10 p.m.
Special Session on LowDimensional Topology, IV
Room 810, Main Building Organizers: James Conant, Cornell University jconant@polygon.math.cornell.edu
Slava Krushkal, University of Virginia krushkal@virginia.edu
Rob Schneiderman, NYUCourant Institute schneid@cims.nyu.edu

2:30 p.m.
Nocyclic Covers of Knot Complements.
Nathan D Broaddus*, Columbia University
(98657131)

3:00 p.m.
Straight lines intersecting a knot in four points.
Ryan Budney*, Rochester
Jim Conant, Cornell
Kevin Scannell, New York NY
Dev Sinha, New York NY
(98657107)

3:30 p.m.
Stabilization in the braid groups.
Joan Birman*, Columbia University, Barnard College
(98657132)

Sunday April 13, 2003, 2:45 p.m.5:15 p.m.
Special Session on Algebraic and Topological Combinatorics, IV
Room 613, Courant Building Organizers: EvaMaria Feichtner, ETH, Zurich, Switzerland feichtne@math.ethz.ch
Dmitry N. Kozlov, University of Bern, Switzerland; and KTH, Stockholm, Sweden kozlov@math.ethz.ch

2:45 p.m.
Some remarks about locallydefined combinatorial invariants.
Robin Forman*, Rice University
(98657199)

3:25 p.m.
Combinatorialtopological aspects of hyperbolic volume.
Ruth Kellerhals*, University of Fribourg
(98652147)

4:05 p.m.
Spreads of nonsingular pairs in symplectic vector spaces.
Steven H. Weintraub*, Lehigh Univ.
(9865220)

4:45 p.m.
Cluster algebras and Poisson Geometry.
Michael Shapiro*, Michigan State University
Michael Gekhtman, University of Notre Dame
Alek Vainshtein, University of Haifa
(98657151)

Sunday April 13, 2003, 3:00 p.m.4:20 p.m.
Special Session on Topological Aspects of Complex Singularities, IV
Room 401, Main Building Organizers: Sylvain E. Cappell, NYUCourant Institute cappell@cims.nyu.edu
Walter D. Neumann, Barnard College, Columbia University neumann@math.columbia.edu
Agnes Szilard, Barnard College, Columbia University szilard@math.columbia.edu

3:00 p.m.
Topological Invariants of Stratified Maps with NonWitt Target.
Markus Banagl*, University of Cincinnati
(9865772)

3:30 p.m.
Bifurcations in Gradient Systems with Symmetry.
Christopher M. Herald*, University of Nevada, Reno
(9865780)

4:00 p.m.
Intersection Alexander Polynomials.
Greg Friedman*, Yale University
(9865778)
Inquiries: meet@ams.org

