# Differential Geometry Seminar

# Spring 2001

The seminar met on
Wednesdays 2:45-3:45. It was organized by
Christina Sormani.

## Schedule, Spring 2001

**Feb 7**

John Loftin, Columbia University,

"Riemannian metrics on projectively flat manifolds"
**Feb 14**

Harold Donnelly, Institute for Advanced Study,

"Harmonic functions on manifolds of non-negative
Ricci curvature."
**Feb 21**

Christina Sormani, Lehman College, C.U.N.Y.

"Ricci curvature, limit spaces and universal covers."
**Feb 28**

Xiaochun Rong, Rutgers University

"Positive Pinching and Injectivity Radius"
**March 7**

Jozef Dodziuk, Queens College, C.U.N.Y.,

"L^2-invariants of amenable coverings"
**March 14**

Yu Ding, Courant Institute, N.Y.U.

"Asymptotic formulas for heat kernels and Green's functions"
**March 21**

Maria Psarelli, Bronx Community College, C.U.N.Y.

"Maxwell-Klein-Gordon Equations in 4-dimensional Minkowski Space"
**March 28**

Norbert Peyerimhoff, Universitat Bochum

``The integrated density of states for random Schroedinger operators on
manifolds''
**April 4 **

Edgar Feldman, Grad. Center, C.U.N.Y.

"Spin conformal lower bounds for Dirac eigenvalues"
**April 11 **

Spring Break

no meeting this week
**April 18 **

Zoltan Szabo, Lehman College, C.U.N.Y.

"Isospectral pairs of metrics on balls,
spheres, and other manifolds with different local geometries"
** April 25 **

John Velling, Brooklyn College, C.U.N.Y.

"Quadratic differentials and minimal surfaces in hyperbolic space"