Results 111 to 120 of about 254,909 (213)

Amenability and Contractibility Modulo an Ideal of Banach Algebras

Abstract and Applied Analysis, 2014
We investigate the concept of amenability modulo an ideal of Banach algebra, showing that amenability modulo an ideal can be characterized by the existence of virtual and approximate diagonal modulo an ideal.
Hamidreza Rahimi, Elham Tahmasebi
doaj   +1 more source

Unary FA-presentable semigroups [PDF]

, 2012
Automatic presentations, also called FA-presentations, were introduced to extend nite model theory to innite structures whilst retaining the solubility of interesting decision problems.
Cain, Alan James, Ruskuc, Nik, Thomas, R.M., Ruskuc, Nik; id_orcid   +3 more
core   +1 more source

Pseudo-amenability of Brandt semigroup algebras [PDF]

, 2009
summary:In this paper it is shown that for a Brandt semigroup $S$ over a group $G$ with an arbitrary index set $I$, if $G$ is amenable, then the Banach semigroup algebra $\ell^1(S)$ is pseudo ...
Sadr, Maysam Maysami, Maysam Maysami Sadr   +1 more
core   +1 more source

Permanently Weak Amenability of Rees Semigroup Algebras

International Journal of Analysis and Applications, 2018
In this paper, we consider n-weak amenability of full matrix algebras and we prove that the Rees semigroup algebra is permanently weakly amenable.
Hassan Hosseinzadeh, Ali Jabbari
doaj   +2 more sources

Cubic Of Positive Implicative Ideals In KU- Semigroup

Ibn Al-Haitham Journal for Pure and Applied Sciences
In this paper, we define a cubic positive implicative-ideal, a cubic implicative-ideal and a cubic commutative-ideal of a semigroup in KU-algebra as a generalization of a fuzzy (positive implicative-ideal, an implicative-ideal and a commutative-ideal ...
Fatema. F. Kareem, Samy M. Mostafa, Omniat. A. Hasan3   +2 more
doaj   +1 more source

The first order cyclic cohomology group of some commutative semigroup algebras

مجلة جامعة الزيتونة, 2023
In this paper, we shall calculate the first order cyclic cohomology group ℋ???? 1(ℓ 1(????),ℓ ∞(????)) where ???? is a certain commutative, 0-cancellative, ???????????? ♯-semigroup.
Hussein GHLAIO
doaj  

Cellular algebras and inverse semigroups

Journal of Algebra, 2006
Let \(A\) be a commutative unital ring. It is shown that the semigroup ring \(A[S]\) of a finite inverse semigroup \(S\) is a cellular \(A\)-algebra in the sense of \textit{J. J. Graham} and \textit{G. I. Lehrer} [Invent. Math. 123, No. 1, 1-34 (1996; Zbl 0853.20029)] if every group ring \(A[G]\) of a maximal subgroup \(G\) of \(S\) is cellular and if ...
openaire   +2 more sources

Diffusion of quantum states generated by a classical random walk

Современная математика: Фундаментальные направления
We investigate a model that associates random walks in a finite-dimensional Euclidean coordinate space of a classical system with random quantum walks, i.e.
Yu. N. Orlov, V. Zh. Sakbaev
doaj   +1 more source

Weighted Convolution Measure Algebras Characterized by Convolution Algebras [PDF]

Journal of Sciences, Islamic Republic of Iran, 2008
The weighted semigroup algebra Mb (S, w) is studied via its identification with Mb (S) together with a weighted algebra product *w so that (Mb (S, w), *) is isometrically isomorphic to (Mb (S), *w).
doaj  

Combinatoric of syzygies for semigroup algebras

Collectanea Mathematica, 1998
We describe how the graded minimal resolution of certain semigroup algebras is related to the combinatorics of some simplicial complexes. More precisely, we make explicit the isomorphism between the Tor groups of the resolution and the Koszul homology. We obtain characterizations of the Cohen-Macaulay and Gorenstein conditions.
Campillo, Antonio, Marijuán, Carlos, Pisón, Pilar, Briales, Emilio   +3 more
openaire   +2 more sources