ABSTRACT
In Chapter 4 we began a recurring theme, that certain E-properties coincide for rtffr groups. In this chapter we emphasize that coincidence. We will consider rtffr groups that are E-finitely generated, E-finitely presented, E-projective, E-generators, or E-flat. Some of these properties are classified up to quasi-isomorphism. We will also consider the homological dimensions of G as a left End(G)-module. The author’s research interests will of course greatly influence the list of properties that are examined here.
