Results 31 to 40 of about 1,113 (200)

Cohomological dimension of Mackey functors for infinite groups [PDF]

open access: yes, 2006
We consider the cohomology of Mackey functors for infinite groups and define the Mackey-cohomological dimension of a group G. We relate this dimension to other cohomological dimensions such as the Bredon cohomological dimension and the relative ...
Nucinkis, Brita E.A.   +2 more
core   +1 more source

DCC categories of cohomological dimension one [PDF]

open access: yes, 1992
A characterization of dcc categories of cohomological dimension one is given from which a characterization of dcc posets of cohomological dimension one is ...
Cheng, Charles Ching-an
core   +1 more source

ON THE COMINIMAXNESS OF LOCAL COHOMOLOGY MODULES [PDF]

open access: yesJournal of Algebraic Systems
Let I be an ideal of a commutative Noetherian ring R. It is shown that the R-modules Hi I (M) are I-cominimax, for all finitely generated R-modules M and all i ∈ N0, if the R-modules Hi I (R) are I-cofinite with dimension not exceeding 1, for all ...
Ghader Ghasemi, Jafar Azami
doaj   +1 more source

Determining the cohomological dimension of certain compacta [PDF]

open access: yes, 1987
In previous work of this author and of John J. Walsh it was shown that many of the known examples of hereditarily infinite dimensional compacta have infinite cohomological dimension.
Leonard R. Rubin
core   +1 more source

Separable ring extensions and cohomological dimension [PDF]

open access: yes, 1988
Our purpose here is to obtain generalizations of several results on cohomological dimension of algebras due to M. Auslander, Eilenberg, Rosenberg, and Zelinsky in which the notion of separable algebra plays a significant role. The generalization consists
Lbekkouri, Aboubakr
core   +1 more source

Topological calculation of local cohomological dimension [PDF]

open access: yes, 2023
We show that the sum of the local cohomological dimension and the rectified $\mathbb Q$-homological depth of a closed analytic subspace of a complex manifold coincide with the dimension of the ambient manifold.
Walther, Uli   +2 more
core   +1 more source

Two-sided homological properties of special and one-relator monoids

open access: yesForum of Mathematics, Sigma
A monoid presentation is called special if the right-hand side of each defining relation is equal to 1. We prove results which relate the two-sided homological finiteness properties of a monoid defined by a special presentation with those of its group of
Robert D. Gray, Benjamin Steinberg
doaj   +1 more source

Bounding The Hochschild Cohomological Dimension [PDF]

open access: yes, 2014
Ce mémoire a deux objectifs principaux. Premièrement de développer et interpréter les groupes de cohomologie de Hochschild de basse dimension et deuxièmement de borner la dimension cohomologique des k-algèbres par dessous; montrant que presque aucune ...
Kratsios, Anastasis
core   +5 more sources

Diophantine and cohomological dimensions [PDF]

open access: yesProceedings of the American Mathematical Society, 2015
We give explicit linear bounds on the p p -cohomological dimension of a field in terms of its Diophantine dimension.
Krashen, Daniel, Matzri, Eliyahu
openaire   +3 more sources

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