**Topology-Geometry Seminar, 2012-2013 **

Link to Department Events Page.

**Winter: **Seminar will meet at 12:00 on Monday in Gilkey 104

Here are comments and suggestions by faculty for possible topics for students to present:

**Catherine Searle:**

The Wild World of 4-manifolds): http://www.ams.org/bookstore-getitem/item=FOURMAN http://www.amazon.com/Wild-World-4-Manifolds-Alexandru-Scorpan/dp/0821837494 I have a copy of this book and have found it to be relatively easy to pick up and read and I would certainly love to learn more about this topic myself. It might then make a natural bridge for students to be able to read Milnor's paper about exotic 7-spheres.

**Tushar Das:**

A few source textbooks and survey articles in Geometry/Topology:

Martin R. Bridson Andre Haefliger

Metric Spaces of Non-Positive Curvature

http://www.math.bgu.ac.il/~barakw/rigidity/bh.pdf

or

http://www.math.psu.edu/petrunin/papers/scans/books/bridson.haefliger.pdf

Gromov

"Sign and geometric meaning of curvature"

http://www.ihes.fr/~gromov/PDF/1%5B77%5D.pdf

Cheeger-Ebin

comparison theorem in riemannian geometry

http://www.math.psu.edu/petrunin/papers/scans/books/cheeger-ebin.pdf

**Dennis Garity**

Mapping class group of the torus

or Classification of simple curves on surfaces

from :

Stillwell, John.

Classical topology and combinatorial group theory -2nd ed. Chapter 6

ISBN 0-387-97970-0

I have a copy