This is a web-based text on Group Representation Theory. It begins at the undergraduate level but continues to more advanced topics.

An early draft of this book was written in TeXmacs during my sabbatical at Reed College during 2006. I have also used this material in classes at Stanford.

This HTML version uses MathJax to put the book on the web.

Preparation of this work was supported in part by NSF grants DMS-0652817 and DMS-1001079.