AMS Sectional Meeting Program by Special Session
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1997 Spring Eastern Sectional Meeting
College Park, MD, April 1213, 1997
Meeting #920
Associate secretaries:
Lesley M Sibner, AMS
lsibner@duke.poly.edu
Special Session on Automorphism Groups of Geometric Structures

Saturday April 12, 1997, 9:00 a.m.10:50 a.m.
Special Session on Automorphism Groups of Geometric Structures, I
Room 0201, Mathematics Building
Organizers:
Alessandra Iozzi, University of Maryland iozzi@math.umd.edu
Garrett James Stuck, University of Maryland gns@math.umd.edu

9:00 a.m.
Classification of Group Actions on Hyperelliptic Riemann Surfaces of Genus $\geq 2$.
Anthony Weaver*, The Graduate School and University Center, CUNY
(9205139)

9:30 a.m.
Superrigid subgroups of solvable Lie groups
Dave Witte*, Oklahoma State University
(9202258)

10:00 a.m.
The decomposition of real projective $n$manifolds and the classification of radiant affine $3$manifolds.
Suhyoung Choi*, Seoul National University, Korea
(9205162)

10:30 a.m.
The ArithmeticGeometric Invariants of Symmetry
Ravi S. Kulkarni*, City University of New York, Queen's College
(9202264)

Saturday April 12, 1997, 2:30 p.m.5:20 p.m.
Special Session on Automorphism Groups of Geometric Structures, II
Room 0201, Mathematics Building
Organizers:
Alessandra Iozzi, University of Maryland iozzi@math.umd.edu
Garrett James Stuck, University of Maryland gns@math.umd.edu

2:30 p.m.
On the dynamics of pseudoAnosov homeomorphisms on representation varieties of surface groups
Michael Kapovich*,
(92053116)

3:00 p.m.
Growth rate of trajectories of flows on homogeneous spaces
Dmitry Y Kleinbock*, Institute for Advanced Study
Gregory A Margulis, Yale University
(92058187)

3:30 p.m.
Geodesic foliations and Lorentz dynamics
Abdelghani Zeghib*, Ecole Normale Superieure de Lyo, Lyon, France
(92058133)

4:00 p.m.
Curvature obstructions for compact Hermitian manifolds
Luis HernandezLamoneda*, CIMAT, Guanajuato, Mexico
(92053148)

4:30 p.m.
Topological Superrigidity and Applications
Renato Feres*, Washington University
Francois Labourie, Universite ParisSud, Orsay
(92058158)

5:00 p.m.
Isometry Groups of Compact Hyperlorentz Manifolds
Brett A Sovereign*, University of Maryland College Park
(9205329)

Sunday April 13, 1997, 9:00 a.m.10:50 a.m.
Special Session on Automorphism Groups of Geometric Structures, III
Room 0201, Mathematics Building
Organizers:
Alessandra Iozzi, University of Maryland iozzi@math.umd.edu
Garrett James Stuck, University of Maryland gns@math.umd.edu

9:00 a.m.
Superrigidity for isometric group actions on CAT(1) spaces
Yan Gao*, Yale University
(92022131)

9:30 a.m.
Rigidity and Deformations for Semisimple Lie Group Actions
Elie J. Benveniste*, Stanford University
(92053171)

10:00 a.m.
Isotropy of Semisimple Group Actions on Manifolds with Geometric Structure
John P. Szaro*, University of Michigan
(92053173)

10:30 a.m.
Cocycles over Anosov actions and applications
Viorel Ni\c tic\u a*, Indiana University, Bloomington
Andrew T\"or\"ok, Princeton University
(92058219)

Sunday April 13, 1997, 2:30 p.m.4:50 p.m.
Special Session on Automorphism Groups of Geometric Structures, IV
Room 0201, Mathematics Building
Organizers:
Alessandra Iozzi, University of Maryland iozzi@math.umd.edu
Garrett James Stuck, University of Maryland gns@math.umd.edu

2:30 p.m.
Geometry of Crooked Planes
Todd A. Drumm*, Swarthmore College
William M. Goldman, University of Maryland
(92051201)

3:00 p.m.
Invariant measures and orbit closures on homogeneous spaces foractions of subgroups generated by unipotent elements
Nimish A Shah*, Institute for Advanced Studies, Princeton and Tata Institute of
(92022205)

3:30 p.m.
Topological Equivalence of Flows on Solvmanivolds
Diego M Benardete*, University of Hartford
S. G Dani, Tata Institute
(92058214)

4:00 p.m.
Compact CliffordKlein forms of homogeneous manifolds
Toshiyuki Kobayashi*, Mathematical Sciences, University of Tokyo
(92022164)

4:30 p.m.
Local rigidity of higher rank lattice actions
Nantian Qian*, Yale University
(92058179)
Inquiries: meet@ams.org