Following all of the above ring-theoretic "excursions", the text concludes with a final chapter on the issues of cancellation and substitution of modules, along with a discussion on the relatively classical stable range theory of rings. The rich exercise sets for the various chapters of the book are designed to be especially helpful for students and researchers alike who desire to deepen their understanding of noncommutative algebra.
T. Y. Lam is a professor emeritus of mathematics at the University of California, Berkeley. His research interests are broadly spread across group theory, ring theory, field theory, and the history of mathematics. With the past support of a Sloan Fellowship, a Guggenheim Fellowship, and a UCB Miller Professorship, he has published 143 papers and 12 books, to date. A winner of the Leroy Steele Prize for mathematical exposition in 1982, Lam's scholarly work has so far received 6443 MathSciNet citations and 20008 Google Scholar citations.