Characterizing local rings via homological dimensions and regular sequences

Abstract

Let (R, m) be a Noetherian local ring of depth d and C a semidualizing R-complex. Let M be a finite R-module and t an integer between 0 and d. If the GC-dimension of M / a M is finite for all ideals a generated by an R-regular sequence of length at most d - t then either the GC-dimension of M is at most t or C is a dualizing complex. Analogous results for other homological dimensions are also given. © 2005 Elsevier Ltd. All rights reserved.