
AMS Sectional Meeting Full Program
Current as of Tuesday, April 12, 2005 15:08:35
Program 
Deadlines 
Inquiries: meet@ams.org
1989 AMS Eastern Section Meeting
Hoboken, NJ, October 2122, 1989
Meeting #851
Associate secretaries: W Wistar Comfort, AMS wcomfort@wesleyan.edu
Saturday October 21, 1989

Saturday October 21, 1989, 8:00 a.m.9:50 a.m.
Special Session on Geometry Related to Computer Vision, I
Room 219, Kidde Hall

8:00 a.m.
Encoding rectilinear polygonal arcs.
Prabir Bhattacharya*, University of Nebraska, Lincoln
Azriel Rosenfeld, University of Maryland, College Park
(8516859)

8:30 a.m.
Discretized straight lines: Parameters, primitives and properties.
Leo Dorst*, Technical University Delft, The Netherlands and North American Philips Corporation, Briarcliff Manor, New York
(8516881)

9:00 a.m.
Discussion

9:30 a.m.
Orthogonal polygons: Convexity and visibility.
Derick Wood*, University of Waterloo
(8515186)

Saturday October 21, 1989, 8:00 a.m.9:50 a.m.
Special Session on Algebraic Semantics, I
Room 216, Pierce Hall

8:00 a.m.
Matrix and matricial iteration theories.
Stephen L. Bloom*, Stevens Institute of Technology
(8516868)

8:30 a.m.
Algebraic semantics and data directed design.
Eric G. Wagner*, IBM T. J. Watson Research Center, Yorktown Heights, New York
(8516866)

9:00 a.m.
Boolean categories: A foundation for assertion semantics.
Ernest G. Manes*, University of Massachusetts, Amherst
(8516845)

9:30 a.m.
Sequential structures.
Michael W. Mislove, Tulane University
Frank J. Oles*, IBM T. J. Watson Research Center, Yorktown Heights, New York
(8516867)

Saturday October 21, 1989, 8:00 a.m.9:50 a.m.
Special Session on Mathematical Fluid Dynamics, I
Room 218, Pierce Hall

8:00 a.m.
A boundaryvalue problem for the stationary VlasovPoisson equations: the plane diode.
Claude Greengard*, IBM T. J. Watson Research Center, Yorktown Heights, New York
(8517684)

8:30 a.m.
Convergence of a point vortex method for vortex sheets.
Thomas Y. Hou*, Courant Institute of Mathematical Sciences, New York University
(8516548)

9:00 a.m.
Solitary water waves with capillary ripples at infinity.
J. Thomas Beale*, Duke University
(8517672)

9:30 a.m.
Computation of solitary internal waves in stratified fluids.
Bruce Turkington*, University of Massachusetts, Amherst
Alexander Eydeland, University of Massachusetts, Amherst
Sheng Wang, University of Massachusetts, Amherst
(8517699)

Saturday October 21, 1989, 8:00 a.m.9:50 a.m.
Special Session on Lowdimensional Topology, I
Room 203, Morton Hall

8:00 a.m.
Geometric finiteness of certain Kleinian groups.
Peter Scott*, University of Michigan, Ann Arbor
G. A. Swarup, University of Melbourne, Australia
(8515724)

8:30 a.m.
The boundary of outer space in rank two.
Marc Culler, University of Illinois, Chicago
Karen Vogtmann*, Cornell University
(8512014)

9:00 a.m.
Thin triangles in finite volume hyperbolic group graphs.
Kay Tatsuoka*, Rutgers University, Newark
(8512028)

9:30 a.m.
The antilength spectrum for hyperbolic 3manifolds.
Robert Meyerhoff*, Boston University
(8515746)

Saturday October 21, 1989, 8:00 a.m.9:50 a.m.
Special Session on Algebraic Geometry, Padic Aspects, I
Room 224, Kidde Hall

8:00 a.m.
Formal Mellin transform in the arithmetic of function fields.
David Goss*, Ohio State University, Columbus
(8511156)

8:30 a.m.
Rigid subanalytic sets.
Leonard Lipshitz*, Purdue University, West Lafayette
(8511457)

9:00 a.m.
Duality theorems in rigid analytic spaces.
Bruno Chiarellotto*, Princeton University
(8511465)

9:30 a.m.
Logarithmic decay and overconvergence of the unit root zeta function.
B. Dwork*, Princeton University
S. Sperber, University of Minnesota, Minneapolis
(8511464)

Saturday October 21, 1989, 8:30 a.m.9:50 a.m.
Special Session on Computational Algebra, I
Room 116, Pierce Hall

8:30 a.m.
What can be computed in algebraic geometry?
Dave Bayer*, Columbia University
(85114103)

9:00 a.m.
Faster base changes for groups, and their applications.
Gene Cooperman*, Northeastern University
(8512075)

9:30 a.m.
Fast Fourier analysis for finite groups.
Daniel N. Rockmore*, Columbia University
(8512060)

Saturday October 21, 1989, 10:00 a.m.11:00 a.m.
Invited Address
Level sets of solutions of elliptic and parabolic equations.
Room 228, Kidde Hall
FangHua Lin*, Courant Institute of Mathematical Sciences, New York University
(8513593)

Saturday October 21, 1989, 12:30 p.m.1:30 p.m.
Invited Address
Geometric aspects of topological entropy.
Room 228, Kidde Hall
Sheldon E. Newhouse*, University of North Carolina, Chapel Hill
(8515847)

Saturday October 21, 1989, 1:45 p.m.4:05 p.m.
Special Session on Geometry Related to Computer Vision, II
Room 219, Kidde Hall

1:45 p.m.
Discrete multidimensional Jordan surfaces.
Gabor T. Herman*, University of Pennsylvania
(8515701)

2:15 p.m.
Two approaches to digital topology.
T. Y. Kong*, Queens College, City University of New York
(8516808)

2:45 p.m.
Pattern matching as a basis for programmatic feature recognition.
Thomas J. Peters*, University of Connecticut, Storrs
(8516874)

3:15 p.m.
Combinatorial and computational aspects of Minkowski decompositions.
Ruth Silverman*, University of the District of Columbia
David Mount, University of Maryland, College Park
(8515158)

3:45 p.m.
Discussion

Saturday October 21, 1989, 1:45 p.m.3:05 p.m.
Special Session on Algebraic Semantics, II
Room 216, Pierce Hall

1:45 p.m.
Step bisimulation can be truly concurrent.
Douglas R. Troeger*, Syracuse University
(8516869)

2:15 p.m.
A general framework for models of type polymorphism.
Badri R. Narayanan*, Stevens Institute of Technology
(8516880)

2:45 p.m.
Discussion

Saturday October 21, 1989, 1:45 p.m.3:35 p.m.
Special Session on Mathematical Fluid Dynamics, II
Room 218, Pierce Hall

1:45 p.m.
Some experiments on a vortex redistribution method.
Leon L. Van Dommelen*, Florida A & M University
(8517655)

2:15 p.m.
Discussion

2:45 p.m.
On the smallest scale estimates for the incompressible NavierStokes equations.
William D. Henshaw, IBM T. J. Watson Research Center, Yorktown Heights, New York
HeinzOtto Kreiss, University of California, Los Angeles
Luis G. Reyna*, IBM T. J. Watson Research Center, Yorktown Heights, New York
(8517638)

3:15 p.m.
Stieltjes integral representation and effective diffusivity bounds for turbulent transport.
Marco Avellaneda*, Courant Institute of Mathematical Sciences, New York University
Andrew J. Majda, Princeton University
(85176100)

Saturday October 21, 1989, 1:45 p.m.4:05 p.m.
Special Session on Lowdimensional Topology, IIA
Room 203, Morton Hall

1:45 p.m.
Deformations of length functions in groups.
Richard K. Skora*, Columbia University
(8512012)

2:15 p.m.
A oneparameter Lefschetz fixed point theorem.
Ross Geoghegan*, State University of New York, Binghamton
(8515722)

2:45 p.m.
Examples of discrete groups acting on complex hyperbolic 2space.
William M. Goldman*, University of Maryland, College Park
(8515740)

3:15 p.m.
On Haken and Heegaardspectra for 3manifolds.
Klaus Johannson*, University of Tennessee, Knoxville
(8515726)

3:45 p.m.
Closed braid representatives of split and composite links.
Joan S. Birman*, Institute for Advanced Study
William W. Menasco, State University of New York, Buffalo
(8515730)

Saturday October 21, 1989, 1:45 p.m.3:35 p.m.
Special Session on Lowdimensional Topology, IIB
Room 201, Morton Hall

1:45 p.m.
The orthogonal spectrum of a hyperbolic surface.
Ara Basmajian*, University of Oklahoma
(8513006)

2:15 p.m.
Limit volumes of hyperbolic threeorbifolds.
Colin Adams*, Williams College
(8515715)

2:45 p.m.
A parameter space for immersed incompressible surfaces in 3manifolds.
John Hempel*, Rice University
(8515785)

3:15 p.m.
Integral formulae for the enhancement of links and singularities.
Lee Rudolph*, Clark University
(8515323)

Saturday October 21, 1989, 1:45 p.m.4:05 p.m.
Special Session on Smooth Dynamical Systems, I
Room 120, Pierce Hall

1:45 p.m.
Asymptotic homotopy cycles and iterated integrals.
Diego Benardete*, Tufts University
John Mitchell, Prime Computer, Bedford, Massachusetts
(8515889)

2:15 p.m.
Markov partitions for expanding maps of the circle.
Matt Stafford*, University of Minnesota, Minneapolis
(8515837)

2:45 p.m.
Invariant measures for smooth maps on manifolds.
Jane Hawkins*, University of North Carolina, Chapel Hill
(8512871)

3:15 p.m.
Zero prime end rotation number implies a fixed point.
Marcy Barge*, Montana State University
Richard Gillette, Montana State University
(8515891)

3:45 p.m.
Linear differential equations with a quasiperiodic, skewHermitian coefficient matrix.
Marek Rychlik*, University of Arizona
(8515861)

Saturday October 21, 1989, 1:45 p.m.3:35 p.m.
Special Session on Computational Algebra, II
Room 116, Pierce Hall

1:45 p.m.
Polynomial factorization and applications.
Erich Kaltofen*, Rensselaer Polytechnic Institute
(8511262)

2:15 p.m.
Shrinking lattice polyhedra.
John Cremona, University of Exeter, England
Susan Landau*, Wesleyan University and University of Massachusetts, Amherst
(8515163)

2:45 p.m.
Structures for computational algebra in scratchpad.
Stephen M. Watt*, IBM T. J. Watson Research Center, Yorktown Heights, New York
(8516895)

3:15 p.m.
The computation of Galois groups.
Clifton J. Williamson*, IBM T. J. Watson Research Center, Yorktown Heights, New York
(8511197)

Saturday October 21, 1989, 1:45 p.m.4:05 p.m.
Special Session on Algebraic Geometry, Padic Aspects, II
Room 224, Kidde Hall

1:45 p.m.
Fundamental groups over the padics and modulo p.
David Harbater*, University of Pennsylvania
(8511452)

2:15 p.m.
pAdic local zeta functions and Newton polyhedron.
Diane Meuser*, Boston University
(85114101)

2:45 p.m.
Distinctness of Kloosterman sums.
Benji Fisher*, Princeton University
(85114102)

3:15 p.m.
Monodromy of Kloosterman Fcrystals, I.
Richard Crew*, University of Minnesota, Minneapolis
(8511496)

3:45 p.m.
Discussion

Saturday October 21, 1989, 1:45 p.m.3:55 p.m.
General Session
Room 220, Pierce Hall

1:45 p.m.
A bouquet of congruences.
Joseph Arkin*, United States Military Academy
David C. Arney, United States Military Academy
Rickey A. Kolb, United States Military Academy
(8511105)

2:00 p.m.
Systems of super sequential numbers.
Joseph Arkin, United States Military Academy
David C. Arney*, United States Military Academy
Lee S. Dewald, United States Military Academy
Frank R. Giordano, United States Military Academy
(8511102)

2:15 p.m.
Lusin's theorem for absolutely continuous functions.
Casper Goffman*, Purdue University, West Lafayette
(8512619)

2:30 p.m.
Rational reciprocity.
Charles Helou*, Pennsylvania State University, Delaware County Campus
(8511118)

2:45 p.m.
A nonlinear recurrence yielding binary digits.
Stanley Rabinowitz*, Westford, Massachusetts
Peter Gilbert, Digital Equipment Corporation, Nashua, New Hampshire
(8511188)

3:00 p.m.
Regular lattices and weakly replete lattices.
George M. Eid*, John Jay College of Criminal Justice, City University of New York
(8512851)

3:15 p.m.
A sequence of knot groups and their centers.
Francis D. Lonergan*, Webster, Massachusetts
(8515535)

3:30 p.m.
Classifying cellular automata.
Klaus Sutner*, Stevens Institute of Technology
(8516842)

3:45 p.m.
ntuple hulls in uniform algebra spectrum.
Toma V. Tonev*, University of Toledo
(8514617)
Sunday October 22, 1989

Sunday October 22, 1989, 7:30 a.m.9:50 a.m.
Special Session on Geometry Related to Computer Vision, III
Room 219, Kidde Hall

7:30 a.m.
Object detection in images by probing.
David M. Mount*, University of Maryland, College Park
(8515194)

8:00 a.m.
Global distances from local operations.
Gunilla Borgefors*, Swedish Defence Research Establisment, Sweden
(8515153)

8:30 a.m.
Illuminating line segments from beyond.
WeiPing Liu, University of Ottawa
Ivan Rival*, University of Ottawa
(8516873)

9:00 a.m.
Computational geometry and computer vision.
Godfried Toussaint*, McGill University
(8516882)

9:30 a.m.
Discussion

Sunday October 22, 1989, 7:30 a.m.9:50 a.m.
Special Session on Lowdimensional Topology, IIIA
Room 203, Morton Hall

7:30 a.m.
Not all links are concordant to boundary links.
Tim D. Cochran*, Northwestern University
Kent E. Orr, Indiana University, Bloomington
(8515754)

8:00 a.m.
Knot polynomials and boundary slopes.
D. Cooper, University of California, Santa Barbara
D. D. Long*, University of California, Santa Barbara
(8515704)

8:30 a.m.
Volumes of hyperbolic 3orbifolds.
William Dunbar*, Pennsylvania State University, Erie
G. Robert Meyerhoff, Boston University
(8515713)

9:00 a.m.
State models and the Alexander polynomial.
Kenneth C. Millett*, University of California, Santa Barbara
(8515720)

9:30 a.m.
Progress on the Tait flyping conjecture.
Morwen B. Thistlethwaite*, University of Tennessee, Knoxville
(8515727)

Sunday October 22, 1989, 8:00 a.m.9:50 a.m.
Special Session on Mathematical Fluid Dynamics, III
Room 218, Pierce Hall

8:00 a.m.
Invariant helical subspaces of the NavierStokes equations.
Sidney Leibovich, Cornell University
Alexis Mahalov, Cornell University
Edriss S. Titi*, University of California, Irvine
(8517632)

8:30 a.m.
Combinatorics and invariant tori in vortex dynamics.
Chjan Lim*, Rensselaer Polytechnic Institute
(8517650)

9:00 a.m.
A steady state solution of a nonlinear diffusion process.
Raymond Michalek*, Stevens Institute of Technology
(8513549)

9:30 a.m.
Discussion

Sunday October 22, 1989, 8:00 a.m.9:50 a.m.
Special Session on Smooth Dynamical Systems, II
Room 120, Pierce Hall

8:00 a.m.
Multiple bifurcation in a predatorprey system.
Douglas S. Shafer*, University of North Carolina, Charlotte
(8515843)

8:30 a.m.
Parameter spaces of shiftlike rational maps of degree 2.
Linda Keen*, Herbert H. Lehman College, City University of New York
(85199104)

9:00 a.m.
Cellular automata can have nonrecursive dynamics.
Lyman P. Hurd*, University of Maryland, College Park
(8515879)

9:30 a.m.
Connectthedots and topological entropy.
Ethan M. Coven*, Wesleyan University
(8515844)

Sunday October 22, 1989, 8:00 a.m.9:50 a.m.
Special Session on Algebraic Geometry, Padic Aspects, III
Room 224, Kidde Hall

8:00 a.m.
Discussion

8:30 a.m.
A GaussBonnet type formula for certain Mumford curves.
Richard M. Freije*, Mount Holyoke College
(8511492)

9:00 a.m.
Lfunctions and differential equations. II.
Peter F. Stiller*, Institute for Advanced Study
(8511490)

9:30 a.m.
linvariance for Galois representations.
Michael Larsen*, Princeton University
Richard Pink, Princeton University
(8511187)

Sunday October 22, 1989, 8:30 a.m.9:50 a.m.
Special Session on Lowdimensional Topology, IIIB
Room 201, Morton Hall

8:30 a.m.
The second homology of discrete groups of diffeomorphisms.
Alexander Suciu*, Northeastern University
Solomon Jekel, Northeastern University
(8515725)

9:00 a.m.
Imbeddings of threemanifold groups.
F. Gonzal\'ezAcu\~na, Universidad Nacional Autonoma de Mexico
Wilbur Whitten*, University of Southwestern Louisiana
(8515716)

9:30 a.m.
Algebraic surfaces and exotic smooth structures.
Robert E. Gompf*, University of Texas, Austin
(8515710)

Sunday October 22, 1989, 8:30 a.m.9:50 a.m.
Special Session on Finite Groups, I
Room 116, Pierce Hall

8:30 a.m.
A proof of the KegelWielandt conjecture.
Peter Kleidman*, Rutgers University, New Brunswick
(8512076)

9:00 a.m.
Regular orbits of nilpotent groups.
Walter Carlip*, University of Chicago
(8512034)

9:30 a.m.
Some lattices and their groups.
John Conway*, Princeton University
(8512077)

Sunday October 22, 1989, 10:00 a.m.11:00 a.m.
Invited Address

Sunday October 22, 1989, 12:30 p.m.1:30 p.m.
Invited Address
Dynamics and singularity formation for vortex sheets.
Room 228, Kidde Hall
Russel Caflisch*, Courant Institute of Mathematical Sciences, New York University and University of California, Los Angeles
(8517633)

Sunday October 22, 1989, 1:45 p.m.3:05 p.m.
Special Session on Geometry Related to Computer Vision, IV
Room 219, Kidde Hall

1:45 p.m.
A Jordan surface theorem for threedimensional digital spaces.
Ralph Kopperman, City College, City University of New York
Paul R. Meyer*, Herbert H. Lehman College, City University of New York
Richard G. Wilson, Herbert H. Lehman College, City University of New York
(8515411)

2:15 p.m.
A general Voronoi diagram as a spatial metric.
John D. Radke*, University of Pennsylvania
(8515198)

2:45 p.m.
A survey of metrics used in digital geometry.
Robert A. Melter*, Long Island University, Southampton College
(8515109)

Sunday October 22, 1989, 1:45 p.m.3:05 p.m.
Special Session on Mathematical Fluid Dynamics, IV
Room 218, Pierce Hall

1:45 p.m.
Dynamics of small numbers of hydrodynamically interacting spheres under the influence of gravity.
Jonathan H. C. Luke*, New Jersey Institute of Technology
(8517683)

2:15 p.m.
Complex approximate solutions to the Euler equations.
Vladimir Scheffer*, Rutgers University, New Brunswick
(8517670)

2:45 p.m.
Approximation of an initialboundary value problem for a Bingham fluid.
Jong Uhn Kim*, Virginia Polytechnic Institute and State University
(8517631)

Sunday October 22, 1989, 1:45 p.m.3:05 p.m.
Special Session on Lowdimensional Topology, IV
Room 203, Morton Hall

1:45 p.m.
Topology of curves in compact complex surfaces.
Walter D. Neumann*, Ohio State University, Columbus
(8513239)

2:15 p.m.
The group of outer automorphisms of a free product.
Darryl McCullough, University of Oklahoma
Andy Miller*, University of Oklahoma
(8515721)

2:45 p.m.
Geodesic laminations with transverse distributions.
Francis Bonahon*, University of Southern California
(8515703)

Sunday October 22, 1989, 1:45 p.m.3:05 p.m.
Special Session on Smooth Dynamical Systems, III
Room 120, Pierce Hall

1:45 p.m.
Do steady fast magnetic dynamos exist?
Ittai Kan*, George Mason University
Edward Ott, University of Maryland, College Park
John M. Finn, University of Maryland, College Park
James D. Hanson, Auburn University, Auburn
(85199105)

2:15 p.m.
Unstable chaos and symbolic dynamics.
Denis Blackmore*, New Jersey Institute of Technology and Courant Institute of Mathematical Sciences
(8515829)

2:45 p.m.
Linking and the shadowing property for piecewise monotone maps.
Liang Chen*, Tufts University
(8515841)

Sunday October 22, 1989, 1:45 p.m.3:05 p.m.
Special Session on Finite Groups, II
Room 116, Pierce Hall

1:45 p.m.
Revision of the classification of the finite simple groups: A status report.
Daniel Gorenstein*, Rutgers University, New Brunswick
(8512078)

2:15 p.m.
Discussion

2:45 p.m.
Finite groups and the multiplicative structure of subfields.
Robert M. Guralnick*, University of Southern California
Roger Wiegand, University of Nebraska, Lincoln
(8512007)
Inquiries: meet@ams.org

