Cohomologically Cofinite Complexes
Abstract
Let A be a commutative noetherian ring, and an ideal in it. In this paper we continue the study, begun in [PSY1], of the derived -adic completion and the derived -torsion functors. Here are our results: (1) a structural characterization of bounded above cohomologically complete complexes; (2) the Cohomologically Complete Nakayama Theorem; and (3) a characterization of cohomologically cofinite complexes.
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