Columbia Mathematics Department Colloquium


Splines, partition functions,  index and infinitesimal


Claudio Procesi

La Sapienza, Rome



I will explain how certain theorems of Dahmen--Micchelli on
splines and partition functions  can be interpreted in the theory of the
index of transversally elliptic operators.  I will then show how ideas of
approximation theory fit into the relation between equivariant K-theory
and equivariant cohomology, using a new tool developed
with De Concini, Vergne called the "infinitesimal index".


Wedensday, September 28th, 5:00 - 6:00 p.m.
Mathematics 520
Tea will be served at 4:30 p.m.