(1) Department of Mathematics, University of Aberdeen, Aberdeen, AB24 3UE, Scotland, UK;(2) Department of Mathematics, University of Georgia, Athens, GA 30602, USA
Abstract:
Suppose that k is a field of characteristic p and that G is a finite group having p-rank at least three. Given a regular sequence of length 2 in H*(G, k), we show how to construct an infinitely generated module whose support variety is strictly smaller than the small support of its cohomology. Received: 25 January 2008