The book focuses on the relation between transformation groups and
algebraic K-theory. The general pattern is to assign to a geometric
problem an invariant in an algebraic K-group which determines the
problem. The algebraic K-theory of modules over a category is studied
extensively and appplied to the fundamental category of G-space. Basic
details of the theory of transformation groups sometimes hard to find in
the literature, are collected here (Chapter I) for the benefit of
graduate students. Chapters II and III contain advanced new material of
interest to researchers working in transformation groups, algebraic
K-theory or related fields.