AMS Sectional Meeting Program by Special Session
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1997 Fall Central Sectional Meeting
Milwaukee, WI, October 2425, 1997
Meeting #927
Associate secretaries:
Susan J Friedlander, AMS
susan@math.northwestern.edu
Special Session on Differential Geometry

Friday October 24, 1997, 9:00 a.m.10:50 a.m.
Special Session on Differential Geometry, I
Room E220, Engineering and Mathematical Sciences Building
Organizers:
Hongyou Wu, Northern Illinois University wu@math.niu.edu

9:00 a.m.
Dupin hypersurfaces with four principal curvatures
Gary R. Jensen*, Washington University
Thomas E. Cecil, College of the Holy Cross
(92753179)

9:40 a.m.
Quadratic Differentials and Conformal Immersions
George I Kamberov*,
(92753259)

10:20 a.m.
Minimal surfaces via loop groups.
Josef Dorfmeister, University of Kansas
Franz Pedit, University of Massachusetts
Magdalena Daniela Toda*, The University of Kansas
(92753182)

Friday October 24, 1997, 2:30 p.m.5:40 p.m.
Special Session on Differential Geometry, II
Room E220, Engineering and Mathematical Sciences Building
Organizers:
Hongyou Wu, Northern Illinois University wu@math.niu.edu

2:30 p.m.
Frenet equations for a null curve.
Krishan L Duggal*, University of Windsor
(92753151)

3:10 p.m.
Symplectic Connections and Quasars.
Ivan C Sterling*, Univ of Toledo
Geoffrey Martin, Univ of Toledo
(92753184)

3:50 p.m.
Gradients and Variational Problems
Anders I Linner*,
(92753144)

4:30 p.m.
Manifolds with zero Morse Index
Shihshu Walter Wei*, OU
(92753187)

5:10 p.m.
An Optimal Path Problem
Libin Mou*,
(92753189)

Saturday October 25, 1997, 9:00 a.m.10:50 a.m.
Special Session on Differential Geometry, III
Room E220, Engineering and Mathematical Sciences Building
Organizers:
Hongyou Wu, Northern Illinois University wu@math.niu.edu

9:00 a.m.
Catastrophic phenomena in soap bubble experiments.
Henry C. Wente*, University of Toledo
(92749367)

9:40 a.m.
Discrete curves and their discrete integrable flows
Franz J Pedit*,
(92753118)

10:20 a.m.
Line Congruences and the Space of Lines
Mary D. Shepherd*, SUNY College at Potsdam
(9275397)

Saturday October 25, 1997, 2:30 p.m.6:20 p.m.
Special Session on Differential Geometry, IV
Room E220, Engineering and Mathematical Sciences Building
Organizers:
Hongyou Wu, Northern Illinois University wu@math.niu.edu

2:30 p.m.
The HermitianEinstein equation on K\"ahlerian fiber bundles and the coupled vortex equations.
James F. Glazebrook*, Eastern Illinois University and University of Illinois
Steven B. Bradlow, University of Illinois
Franz W. Kamber, University of Illinois
(92753130)

3:10 p.m.
Symplectic Connections and Exotic Holonomy
QuoShin Chi*, Washington University in St. Louis
(92753139)

3:50 p.m.
The degree of superminimal surfaces in spheres.
Luis Fern\'andez*, Washington University
(92753216)

4:30 p.m.
A Sharp Isoperimetric Inequality for PLmanifolds of Nonpositive Curvature
Jianguo Cao*, University of Notre Dame
(92758200)

5:10 p.m.
New Isospectral Deformations of Closed Riemannian Manifolds.
Carolyn S Gordon, Dartmouth College
Ruth Gornet*, Texas Tech University
Dorothee Schueth, Mathematisches Institut der Univ. Bonn
David L Webb, Dartmouth College
Ed Wilson, Washington University
(92758330)

5:50 p.m.
Helices and Hasimoto Surfaces.
Thomas A. Ivey*, Ball State University
(92753331)
Inquiries: meet@ams.org