Zimmermann A. Characters of Groups and Lattices over Orders 2022

Textbook in PDF format

Preface
Ring theoretical foundations
Characters
Tensor products, Mackey formulas and Clifford theory
Bilinear forms on modules
Brauer induction, Brauer’s splitting field theorem
Some homological algebra methods in ring theory
Some algebraic number theory
Some notions of integral representations
Solution to selected exercises
Bibliography
Index