Noetherian Ring Seminar Spring 2014

Refreshments served in the Tea Room #4161
McHenry Building - Room 4130
For more information, contact Felicia Tabing

Noetherian Ring website:

Friday, April 18, 2014

Women in Mathematics Social


Debra Lewis, University of California, Santa Cruz

Wednesday May 7, 2014

There will be tea and snacks at 4:15 p.m. in the Tea Room. The talk starts at 5:00pm in McHenry 4130.

Mapping Spheres to Spheres

Ayelet Lindenstrauss, Indiana University

I would like to introduce a key concern of homotopy theory: the attempt to understand the homotopy groups of spheres, that is: given a $k$-dimensional sphere $S^k$ and an $n$-dimensional sphere $S^n$, to try to understand all possible continuous maps from $S^k$ to $S^n$ up to continuous deformation. These are not yet known in general. The data that we do have (and we have lots of it) shows rich and complex patterns; even the Bernoulli numbers, for example, make an appearance. I will present two methods of seeing interesting maps in relatively low dimensions, the Hopf map and the J-homomorphism.