Joint Mathematics Meetings Program by Day
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1998 Joint Mathematics Meetings
Baltimore, MD, January 710, 1998
Meeting #930
Associate secretaries:
Robert J Daverman, AMS daverman@math.utk.edu
Donovan H Van Osdol, MAA dv@christa.unh.edu
Friday January 9, 1998

Friday January 9, 1998, 7:00 a.m.8:00 a.m.
Joint Pi Mu Epsilon and MAA Student Chapter Advisors' Breakfast

Friday January 9, 1998, 7:30 a.m.4:00 p.m.
Joint Meetings Registration

Friday January 9, 1998, 8:00 a.m.10:50 a.m.
AMSMAA Special Session on History of Mathematics, I
Organizers:
James J. Tattersall, Providence College tat@providence.edu
Karen H. Parshall, University of Virginia khp3k@virginia.edu

8:00 a.m.
The Mathematics of Levi ben Gershon.
Shai Simonson*, Stonehill College
(93001372)

8:30 a.m.
Felix Hausdorff and the Continuum Problem.
Jacob M Plotkin*, Michigan State University
Marion Scheepers, Boise State University
(93001432)

9:00 a.m.
George Berkeley's Mathematical, Philosophical, and Religious Ideas: The Intersections, 17321735.
Helena M. Pycior*, University of WisconsinMilwaukee
(93001566)

9:30 a.m.
Continuous nowhere differentiable functions.
Peter Duren*, University of Michigan
(93001171)

10:00 a.m.
Women and Mathematical Education in Classical India.
Kim Plofker*, Brown University
(93001214)

10:30 a.m.
The mathematical love letters of Barnes Wallis.
John G Fauvel*, The Open University, England
(93001143)

Friday January 9, 1998, 8:00 a.m.10:55 a.m.
AMSMAA Special Session on Research in Undergraduate Mathematics Education, I
Organizers:
Michael A. McDonald, Occidental College mickey@oxy.edu
Karen J. Graham, University of New Hampshire

8:00 a.m.
Identifying the Skills that are Critical to Success in Precalculus.
Barry M Cherkas*, Hunter College (CUNY)
Baranchik Alvin, Hunter College (CUNY)
(93000471)

8:20 a.m.
The Effect of Computer Algebra Systems on Developmental Algebra Courses .
Laurie B Hopkins*, Columbia College
Amelia S Kinard, Columbia College
(93098296)

8:40 a.m.
A Classification System For Conceptual and Procedural Errors in Calculus.
Mary K. Porter*, Saint Mary's College
(93098955)

9:00 a.m.
Reform at West Point in year seven
Rich West*, U.S. Military Academy
(93098348)

9:20 a.m.
A Report on the Impact of the Calculus Reform Movement: A study conducted at the National Science Foundation.
Susan L. Ganter*, Worcester Polytechnic Institute
(930981018)

9:40 a.m.
The effects of writing assignments on secondsemester calculus students' understanding of the limit concept.
Melanie A Wahlberg*, Western Michigan University
(93098653)

10:00 a.m.
Knowing when you are right: Four students’' justifications of their solutions to a definite integral.
King D King*, San Diego State University
Chris L Rasmussen, Purdue University Calumet
(93098688)

10:20 a.m.
Describing Beginning Calculus Students' Understandings of Variables, Functions, and Rates as a Foundation for Learning the Derivative.
Susan F Pustejovsky*, Alverno College
(930981167)

10:40 a.m.
How Undergraduates' Understanding of Variables Affects Their Choice of Strategies Used to Solve Algebra Problems .
Albert D. Otto*, Illinois State University
Cheryl A. Lubinski, Illinois State University
(93098935)

Friday January 9, 1998, 8:00 a.m.10:50 a.m.
AMS Special Session on Commutative Algebra and Algebraic Geometry, II
Organizers:
Melvin Hochster, University of Michigan, Ann Arbor hochster@math.lsa.umich.edu
Craig L. Huneke, Purdue University hunkek@macaulay.math.purdue.edu

8:00 a.m.
Algorithmic computation of local cohomology modules: an application of noncommutative Gr\"obner bases to commutative algebra.
Uli Walther*, University of Minnesota
(93013187)

8:30 a.m.
Symbolic Rees algebras over strongly Fregular rings.
Anurag K. Singh*, University of Michigan
(93013701)

9:00 a.m.
The Plus Closure in Mixed Characteristic.
Raymond Heitmann*, The University of Texas at Austin
(93013877)

9:30 a.m.
A generalization of the AuslanderBuchsbaum formula.
David A Jorgensen*, University of Texas
(93013772)

10:00 a.m.
Test ideals in coordinate rings of Fermat curves.
Moira A. McDermott*, Bowdoin College
(93013746)

10:30 a.m.
Strong and weak Fregularity are equivalent in graded rings.
Gennady Lyubeznik, University of Minnesota
Karen E Smith*, MIT
(93013334)

Friday January 9, 1998, 8:00 a.m.10:50 a.m.
AMS Special Session on Difference Equations and Applications, I
Organizers:
Edward A. Grove, University of Rhode Island grove@math.uri.edu
Gerasimos Ladas, University of Rhode Island gladas@math.uri.edu

8:00 a.m.
Extinction of Several Species in a Discrete Competitive System.
John E Franke*, North Carolina State University
David M Chan, North Carolina State University
(93092831)

8:30 a.m.
Discrete AgeStructured Competitive Systems With Predation And Patches.
AbdulAziz Yakubu*, Howard University
(93034153)

9:00 a.m.
Dynamical behavior of a discrete, oneisland, migration model with densitydependent selection.
James F Selgrade*, North Carolina State University
James H Roberds, USDA Forest Service
(93092518)

9:30 a.m.
Global Stability for a Population Model.
Jeffrey T Hoag*, Providence College
Gerry Ladas, University of Rhode Island
John E. Franke, North Carolina State University
(930391012)

10:00 a.m.
On the Behavior of Solutions of the Difference Equation $x_{n+1}=x_{n1}e^{x_{n}}$.
Edward A. Grove, Univ. of Rhode Island
Candace M. Kent*, Univ. of Rhode Island
Gerry Ladas, Univ. of Rhode Island
(93039666)

10:30 a.m.
Geometric unfolding of a difference equation.
Christopher Zeeman*, Oxford University, Cambridge, UK
(93039547)

Friday January 9, 1998, 8:00 a.m.10:50 a.m.
AMS Special Session on Inverse Problems and Signal Analysis, I
Organizers:
M. Zuhair Nashed, University of Delaware nashed@math.udel.edu

8:00 a.m.
An overview of parabolic inverse problems.
John R Cannon*, University of Central Florida
(93035294)

8:30 a.m.
Continuous Dependence on Modling for IllPosed Problems.
Karen A Ames*, UAH
(93035748)

9:00 a.m.
The Gibbs(Wilbraham) Phenomenon  An Update.
Abdul J Jerri*, Clarkson University
(93065532)

9:30 a.m.
The Discrete Cosine Transform.
Gilbert Strang*, M.I.T.
(93042330)

10:00 a.m.
The asymptotics of optimal (equiripple) filters.
Jianhong Shen*, MIT
Gilbert William Strang, MIT
(930411191)

10:30 a.m.
System Identification Using TimeFrequency Analysis and Synthesis.
XiangGen Xia*, University of Delaware
(93094308)

Friday January 9, 1998, 8:00 a.m.10:50 a.m.
AMS Special Session on Knot Theory and Quantum Topology, I
Organizers:
Doug Bullock, Boise State University bullock@diamond.idbsu.edu
Mark E. Kidwell, U.S. Naval Academy mek@math6.sma.usna.navy.mil
Jozef H. Przytycki, George Washington University przytyck@math.gwu.edu
Yongwu Rong, George Washington University rong@math.gwu.edu

8:00 a.m.
Multiple harmonic series and Kontsevich's invariant
Michael E Hoffman*, U.S. Naval Academy
(9301629)

8:30 a.m.
Structures and diagrammatics of four dimensional topological lattice field theories.
J. Scott Carter, University of South Alabama
Louis H. Kauffman, University of Illinois at Chicago
Masahico Saito*, University of South Florida
(93057295)

9:00 a.m.
A topological approach to character varieties and their quantizations.
Adam S. Sikora*, University of Maryland at Collage Park
(930571154)

9:30 a.m.
Multiplicative Invariants and the AndrewsCurtis Conjecture.
John Rosson*, Portland State University
(93057928)

10:00 a.m.
Lie Group Representations of Knot Complements.
Brian S Mangum*, Barnard College, Columbia University
Patrick D Shanahan, Loyola Marymount University
(93057967)

10:30 a.m.
Cyclic Dehn Surgery and the APolynomial of a Knot.
Patrick D Shanahan*, Loyola Marymount University
(9305745)

Friday January 9, 1998, 8:00 a.m.10:50 a.m.
AMS Special Session on Mathematical Methods in Paper Folding, I
Organizers:
Thomas C. Hull, University of Rhode Island hull@math.uri.edu
Robert J. Lang, Spectral Diode Laboratories, Inc. rjlang@aol.com

8:00 a.m.
Mathematical Models of Paper Folding  a Survey .
Thomas C. Hull*, Merrimack College
(93052574)

8:30 a.m.
Folding and Cutting Paper.
Erik D. Demaine*, University of Waterloo
Martin L. Demaine, University of Waterloo
(9305185)

9:00 a.m.
Folding Regular Polygons.
Robert R.A. Geretschläger*, Bundesrealgymnasium Keplerstrasse 1, Graz, Austria
(93051139)

9:30 a.m.
Folding Parabolic Cylinders in Three and Higher Dimensions.
Vincent J Matsko*, Quincy University
(93051503)

10:00 a.m.
An algorithm for origami design.
Robert J Lang*, Pleasanton, CA
(93051468)

10:30 a.m.
The complexity of flat origami.
Bern Marshall, Xerox PARC
Hayes Barry*, PlaceWare, Inc.
(930051011)

Friday January 9, 1998, 8:00 a.m.10:50 a.m.
AMS Special Session on Recent Developments on the Laplace Operator and Its Geometric Applications, I
Organizers:
Ying Shen, Dartmouth College ying.shen@dartmouth.edu
Shumhui Zhu, Dartmouth College shunhui.zhu@dartmouth.edu

8:00 a.m.
Homoclinic harmonic maps from the Lorentz space $S^1\times R$ to symmetric spaces.
ChuuLian Terng*, Northeastern Univeristy
Karen Uhlenbeck, The University of Texas at Austin
(93035871)

8:30 a.m.
K\"ahlerRicci Solitons and Periodic Orbits.
HuaiDong Cao*, Texas A&M University
(93053674)

9:00 a.m.
Energy minimizing maps from Riemann surfaces.
Jingyi Chen*, UBC/MIT
(93053442)

9:30 a.m.
Minimal isometric immersions of spherical space forms into spheres.
Christine M Escher*, Oregon State University
(93053215)

10:00 a.m.
Heat kernels of Lorentz cones.
Hongming Ding*, St. Louis University
(93035123)

10:30 a.m.
Mutually Isospectral Riemann Surfaces.
Robert Brooks, Technion  Israel Institute of Technology (Haifa)
Ruth Gornet*, Texas Tech University
William H. Gustafson, Texas Tech University
(930531149)

Friday January 9, 1998, 8:00 a.m.10:50 a.m.
AMS Special Session on Representation Theory and Noncommutative Harmonic Analysis: A Special Session Honoring the Memory of HarishChandra, I
Organizers:
Robert S. Doran, Texas Christian University r.doran@tcu.edu

8:00 a.m.
Harmonic Analysis on semisimple Lie groups: HarishChandra's work and its influence.
Veeravalli S Varadarajan*, University of California at Los Angeles
(93022133)

9:00 a.m.
Weighted orbital integrals and transfer on real groups.
James G. Arthur*, University of Toronto
(93022439)

9:30 a.m.
Intertwining operators and small unitary representations.
A W Knapp*, SUNY Stony Brook
(93022356)

10:00 a.m.
Some problems in analysis related to representation theory.
Ray A Kunze*, The University of Georgia
(93042414)

10:30 a.m.
Discrete Series Characters for GL(n) over a padic field.
Paul J Sally, Jr*, University of Chicago
(93022886)

Friday January 9, 1998, 8:00 a.m.10:50 a.m.
AMS Special Session on Topology in Dynamical Systems, II
Organizers:
Kathleen T. Alligood, George Mason University alligood@gmuvax.gmu.edu
Judy Anita Kennedy, University of Delaware jkennedy@math.udel.edu

8:00 a.m.
Conjugacies that preserve boundary orbits.
Michael C Sullivan*, Southern Ill. Univ.
(93058185)

8:30 a.m.
Chaos in the Lorenz Equations with Classical Parameter Values: a Computer Assisted Proof.
Konstantin Mischaikow, Georgia Institute of Technology
Marian Mrozek, Uniwersytet Jagiellonski
Andrzej C Szymczak*, Georgia Institute of Technology
(93034936)

9:00 a.m.
Nonsymmetric Lorenz Attractor from a Homoclinic Bifurcation.
Clark Robinson*, Northwestern University
(93058508)

9:30 a.m.
Homological properties of certain minimal sets.
Krystyna M Kuperberg*, Auburn University
(93058783)

10:00 a.m.
New characterizations of (weakly) almost periodic functions in terms of the algebra of $\beta S_d$.
Neil Hindman*, Howard University
Dona Strauss, University of Hull
(93054287)

10:30 a.m.
Directed organization [DO$_{ij}$] groups on toroidal manifolds, and folding dynamics of proteins by topological mechanics.
Okan Gurel*, IBM
Demet Gurel, Touro College
(930541115)

Friday January 9, 1998, 8:00 a.m.10:00 a.m.
MAA Minicourse \#13: Part A
Music and mathematics.
Organizers:
Leon Harkleroad, Poughkeepsie, NY

Friday January 9, 1998, 8:00 a.m.10:00 a.m.
MAA Minicourse \#2: Part A
Interdisciplinary lively application projects.
Organizers:
Frank R. Giordano, COMAP
Marie M. Vanisko, Carroll College
Laurette B. Foster, Prairie View A&M

Friday January 9, 1998, 8:00 a.m.10:00 a.m.
MAA Minicourse \#8: Part B
Linear algebra using an interactive text.
Organizers:
Eugene A. Herman, Grinnell College
Michael D. Pepe, Seattle Central Community College
Robert T. Moore, University of Washington
James R. King, University of Washington

Friday January 9, 1998, 8:00 a.m.10:40 a.m.
AMS Session on Algebraic Topology

8:15 a.m.
A counterexample to a question on the integrality property of `virtual signature'.
Ranja Roy*, SUNY at Binghamton
(9305566)

8:30 a.m.
Periodic points on tori and Pontryagin duality.
Peter N Wong*, Bates College
(93055284)

8:45 a.m.
The topological fundamental group and the construction of fibrations which are nearly covering spaces.
Daniel K. Biss*, Harvard University
(93055487)

9:00 a.m.
Some completion problems in algebraic topology.
James A Kosinski*, University of Michigan
(930551128)

9:15 a.m.
Homogeneous Spaces, Elliptic Genera and Loop Groups.
Scott J Simmons*, University of Kentucky
(930551013)

9:30 a.m.
Rational L.S. category of function spaces.
Samuel B Smith*, Saint Joseph's University
(9305579)

9:45 a.m.
A MinamiWebb formula for compact Lie groups
John R. Martino*, Western Michigan University
Stewart B. Priddy, Northwestern University
(93055397)

10:00 a.m.
On the geometry of free loop space.
Palanivel Manoharan*, Florida Gulf Coast University
(93058243)

10:00 a.m.
A Box Product in Unstable Equivariant Homotopy Theory.
Michele Intermont*, Mesa State College
(930551030)

10:30 a.m.
Residual Amenability and the Approximation of $L^2$invariants.
Bryan F. Clair*, Univ. Of Chicago
(93058493)

Friday January 9, 1998, 8:00 a.m.10:10 a.m.
AMS Session on Applied Dynamics, Geometric Analysis, and Mechanics

8:00 a.m.
Filling Wells of Negative Ricci Curvature.
Christine M Guenther*, University of Oregon
(930581118)

8:15 a.m.
Reproducing kernel Hilbert spaces and Robertson conjecture.
Subhajit Ghosechowdhury*, Purdue University
(93047978)

8:30 a.m.
Stabilizability Issue for Coupeled Wave System in Parallel.
Mahmod Najafi*, Kent State University
(930931066)

8:45 a.m.
The Dirichlet Problem for Dirac Spinors. Prescribing the Surface Tension of Immersions.
George I Kamberov*, Washington University
(93053172)

9:00 a.m.
Modeling MultiRigidBody Dynamics with Contact and Friction.
Mihai Anitescu*