[PDF][PDF] Semidualizing modules
S Sather-Wagstaff - 2010 - ndsu.edu
Semidualizing modules have been found to be useful for several constructions in
homological algebra. Introduced by Foxby, Vasconcelos, Golod, and Wakamatsu. Studied …
homological algebra. Introduced by Foxby, Vasconcelos, Golod, and Wakamatsu. Studied …
Semidualizing modules and the divisor class group
S Sather-Wagstaff - Illinois Journal of Mathematics, 2007 - projecteuclid.org
Among the finitely generated modules over a Noetherian ring $ R $, the semidualizing
modules have been singled out due to their particularly nice duality properties. When $ R …
modules have been singled out due to their particularly nice duality properties. When $ R …
Tate cohomology with respect to semidualizing modules
S Sather-Wagstaff, T Sharif, D White - Journal of Algebra, 2010 - Elsevier
We investigate Tate cohomology of modules over a commutative noetherian ring with
respect to semidualizing modules. We identify classes of modules admitting Tate resolutions …
respect to semidualizing modules. We identify classes of modules admitting Tate resolutions …
The set of semidualizing complexes is a nontrivial metric space
A Frankild, S Sather-Wagstaff - Journal of Algebra, 2007 - Elsevier
We show that the set S (R) of shift-isomorphism classes of semidualizing complexes over a
local ring R admits a nontrivial metric. We investigate the interplay between the metric and …
local ring R admits a nontrivial metric. We investigate the interplay between the metric and …
Reflexivity and ring homomorphisms of finite flat dimension
A Frankild, S Sather-Wagstaff - Communications in Algebra®, 2007 - Taylor & Francis
In this article we present a systematic study of the reflexivity properties of homologically finite
complexes with respect to semidualizing complexes in the setting of nonlocal rings. One …
complexes with respect to semidualizing complexes in the setting of nonlocal rings. One …
Testing for the Gorenstein property
O Celikbas, S Sather-Wagstaff - Collectanea mathematica, 2016 - Springer
We answer a question of Celikbas, Dao, and Takahashi by establishing the following
characterization of Gorenstein rings: a commutative noetherian local ring (R,\mathfrak m)(R …
characterization of Gorenstein rings: a commutative noetherian local ring (R,\mathfrak m)(R …
Semidualizing modules over numerical semigroup rings
E Celikbas, H Geller, T Kobayashi - arXiv preprint arXiv:2306.14989, 2023 - arxiv.org
A semidualizing module is a generalization of Grothendieck's dualizing module. For a local
Cohen-Macaulay ring $ R $, the ring itself and its canonical module are always realized as …
Cohen-Macaulay ring $ R $, the ring itself and its canonical module are always realized as …
Presentations of rings with non-trivial semidualizing modules
DA Jorgensen, GJ Leuschke… - Collectanea mathematica, 2012 - Springer
Let R be a commutative noetherian local ring. A finitely generated R-module C is
semidualizing if it is self-orthogonal and\rm Hom _R (C, C) ≅ R. We prove that a Cohen …
semidualizing if it is self-orthogonal and\rm Hom _R (C, C) ≅ R. We prove that a Cohen …
Bass numbers and semidualizing complexes
S Sather-Wagstaff - Commutative algebra and its applications, 2009 - degruyter.com
Let R be a commutative local Noetherian ring. We prove that the existence of a chain of
semidualizing R-complexes of length. d C 1/yields a degree-d polynomial lower bound for …
semidualizing R-complexes of length. d C 1/yields a degree-d polynomial lower bound for …
Relations between semidualizing complexes
AJ Frankild, S Sather-Wagstaff, A Taylor - Journal of Commutative Algebra, 2009 - JSTOR
We study the following question: Given two semidualizing complexes 𝐵 and 𝐶 over a
commutative noetherian ring 𝑅, does the vanishing of Ext R n (B, C) for 𝑛≫ 0 imply that 𝐵 is …
commutative noetherian ring 𝑅, does the vanishing of Ext R n (B, C) for 𝑛≫ 0 imply that 𝐵 is …