Zimmermann A. Characters of Groups and Lattices over Orders

Berlin: de Gruyter, 2022. — 372 p.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.
The solution to selected exercises.