Results 31 to 40 of about 412,769 (93)

Cofinite graphs and their profinite completions

open access: yes, 2013
Electronic Thesis or DissertationWe generalize the work of B. Hartley, to the category of topological graphs. The completion of a topological group in Hartley's work can be thought of as a particular example of the completion of a general uniform space ...
Das, Bikash Chandra
core   +2 more sources

COFINITENESS AND ARTINIANNESS OF GENERALIZED LOCAL COHOMOLOGY MODULES

open access: yesRomanian Journal of Mathematics and Computer Science, 2015
Let R be a commutative Noetherian ring, a and b ideals of R and let M and N be two finitely generated R-modules. In this paper, we study the cofiniteness of H_b^j(H_a^i(M, N)) in several cases.
FATEMEH DEHGHANI-ZADEH
doaj  

Pathological modules over tame rings [PDF]

open access: yes, 1976
Brenner S, Ringel CM. Pathological modules over tame rings. Journal of the London Mathematical Society.
Ringel, Claus Michael, Brenner, Sheila
core   +1 more source

On Weakly Laskerian and Weakly Cofinite Modules

open access: yesAlgebra Colloquium, 2012
Let R be a commutative Noetherian ring with non-zero identity, 𝔞 an ideal of R and M a finitely generated R-module. We assume that N is a weakly Laskerian R-module and r is a non-negative integer such that the generalized local cohomology module [Formula: see text] is weakly Laskerian for all i < r.
Khashyarmanesh, Kazem   +2 more
openaire   +4 more sources

Endotrivial modules for finite groups of Lie type. [PDF]

open access: yes, 2006
We classify the endotrivial modules for all finite groups of Lie type in defining ...
Mazza, Nadia   +2 more
core   +4 more sources

Cofinite graphs and their profinite completions

open access: yes, 2017
We generalize the idea of cofinite groups, due to B. Hartley, [2]. First we define cofinite spaces in general. Then, as a special situation, we study cofinite graphs and their uniform completions.The idea of constructing a cofinite graph starts with ...
Bikash Das   +2 more
core   +1 more source

On the category of cofinite modules which is Abelian

open access: yesProceedings of the American Mathematical Society, 2014
Let R R denote a commutative Noetherian (not necessarily local) ring and
Bahmanpour, Kamal   +2 more
openaire   +2 more sources

On the Category of Weakly Laskerian Cofinite Modules

open access: yes, 2014
Let $R$ denote a commutative Noetherian (not necessarily local) ring and $I$ be an ideal of $R$. The main purpose of this note is to show that the category $\mathscr{WL}(R, I)_{\it cof}$ of $I$-cofinite weakly Laskerian $R$-modules forms an Abelian ...
Bahmanpour, Kamal
core  

Generalized Cofinitely δ-Semiperfect Modules

open access: yesAnnals of the Alexandru Ioan Cuza University - Mathematics, 2013
Abstract Let R be a ring and M be a left R-module. M is called a cofinitely generalized (weak) δ-supplemented module or briey a δ-CGS-module (δ-CGWS-module) if every cofinite submodule of M has a generalized (weak) δ-supplement in M. In this paper, we give various properties of these modules. It is shown that (1) The class of cofinitely generalized
Yuzbasi, Figen, Eren, Senol
openaire   +1 more source

Some results on the cofiniteness of local cohomology modules [PDF]

open access: yes, 2012
summary:Let $R$ be a commutative Noetherian ring, $\mathfrak {a}$ an ideal of $R$, $M$ an $R$-module and $t$ a non-negative integer. In this paper we show that the class of minimax modules includes the class of $\mathcal {AF}$ modules. The main result is
Mostaghim, Mahdi Hanifi   +2 more
core   +1 more source

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