## EVENT DETAILS AND ABSTRACT

**Number Theory**
**Title:** The de Rham-Witt Complex

**Speaker:** Christopher Davis

**Speaker Info:** University of California, Irvine

**Brief Description:**

**Special Note**: **The speaker will give an introductory preseminar talk for graduate students 2:00-2:45 pm in 101 Annenberg Hall.**

**Abstract:**

Given an algebra A over a field of characteristic p, one can associate a
differential graded algebra called the de Rham-Witt complex over A. In
nice cases, one can use this complex to compute crystalline cohomology.
The goal of this talk will be to define the de Rham-Witt complex and to
explain some of the unusual-looking components of its definition. I will
give some examples, such as the de Rham-Witt complex over F_p and F_p[x].
If time permits I will also explain what changes in characteristic zero.

**Date:** Monday, October 31, 2011

**Time:** 3:00PM

**Where:** Lunt 107

**Contact Person:** Ellen Eischen

**Contact email:** eeischen@math

**Contact Phone:** 847-467-1891

Copyright © 1997-2024
Department of Mathematics, Northwestern University.