KenŐs Notes on

Rational Idempotents

in the

Integral Group Ring

(Applications to Algebraic Combinatorics)

 

These notes are part of a project with Jim Davis (University of Richmond) and were started during a sabbatical visit there in 2005-2006.

 

The notes are primarily .pdf files.  More material is forthcomingÉ.

 

The material here is still in draft form.

           Table of contents

           Bibliography

           Section 1, Motivation

           Section 2, Group Rings

                      Note the examples towards the end of chapter 2.

           Section 3, Group characters and their Idempotents

                      There are a few useful exercises at the end of this section.

           Section 4, Tools from Algebraic Number Theory

           Section 5, Rational Idempotents

 

 

 

Last modified on April 16, 2007.