CONSTRUCTING MODULES WITH PRESCRIBED
LUCHEZAR L. AVRAMOV AND SRIKANTH B. IYENGAR
To Phil Griffith, algebraist and friend.
Abstract.A cohomological support, Supp*A(M), is defined for finitely
generated modules M over a left noetherian ring R, with respect to a
ring A of central cohomology operations on the derived category of R-
modules. It is proved that if the A-module Ext*R(M, M) is noetherian