Abstract
Let G be a finite group; by an algebraic 2-complex over G we mean an exact
sequence of Z[G]-modules of the form:E = (0 → J → E2 → E1 → E0 → Z → 0)where Er is finitely generated free over Z[G] for 0 [les ] r [les ] 2. The module J is determined up to stability by the fact of appearing in such an exact sequence; we denote
its stable class by Ω3(Z); E is said to be minimal when rkZ(J) attains the minimum
possible value within Ω3(Z).
Publisher
Cambridge University Press (CUP)
Cited by
9 articles.
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