Results 1 to 10 of about 254,909 (213)

Weak*-closed invariant subspaces and ideals of semigroup algebras on foundation semigroups [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2014
Let S be a locally compact foundation semigroup with identity and                          be its semigroup algebra. Let X be a weak*-closed left translation invariant subspace of    In this paper, we prove that  X  is invariantly  complemented in   if ...
B. Mohammadzadeh
doaj  

Auslander algebra for the semigroup of all transformations of the two elements set

open access: yesНауковий вісник Ужгородського університету. Серія: Математика і інформатика, 2017
It is described the Auslander algebra for the matrix representations of the semigroup of all transformations of the two elements set over a eld of any characteristic.
E. M. Костишин
doaj   +1 more source

On Pseudo-contractibility and Ultra Central Approximate Identity of Some Semigroup Algebras

open access: yesJournal of Mathematics, 2022
In this paper, we investigate the existence of an ultra central approximate identity for a Banach algebra A and its second dual A∗∗. Also, we prove that for a left cancellative regular semigroup S, ℓ1S∗∗ has an ultra central approximate identity if and ...
Amir Sahami, Seyedeh Fatemeh Shariati
doaj   +1 more source

THE ANALOGUE OF WEIGHTED GROUP ALGEBRA FOR SEMITOPOLOGICAL SEMIGROUPS [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 1995
In [1,2,3], A. C. Baker and J.W. Baker studied the subspace Ma(S) of the convolution measure algebra M, (S) of a locally compact semigroup. H. Dzinotyiweyi in [5,7] considers an analogous measure space on a large class of C-distinguished topological ...
doaj  

Quasilinear Stochastic Cauchy Problem in Abstract Colombeau Spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2012
Generalized solutions to the abstract Cauchy problem for a quasilinear equation with the generator of an integrated semigroup and with terms reflecting nonlinear perturbations and white noise type perturbations are under consideration.
Irina V. Melnikova, Uljana A. Alekseeva
doaj   +1 more source

Application of Semigroup Theory in Modeling Structural Equivalence in English Sentence Patterns

open access: yesJournal of Cross-Disciplinary Sustainability Innovations
Combining semigroup theory with the formal modeling of structural equivalence in English sentences patterns is the target area of this paper. In this study, we create a semigroup representing the grammatical structures of a given sentence NP, VP, PP and
Nazra Zahid Shaikh   +2 more
doaj   +1 more source

On the Structure of С*-Algebras Generated by Representations of the Elementary Inverse Semigroup [PDF]

open access: yesУчёные записки Казанского университета: Серия Физико-математические науки, 2016
The class of С*-algebras generated by the elementary inverse semigroup and being deformations of the Toeplitz algebra has been introduced and studied. The properties of these algebras have been investigated.
S.A. Grigoryan, E.V. Lipacheva
doaj  

Green’s Relations in the Commutative Centralizers of Monounary Algebras

open access: yesDemonstratio Mathematica, 2015
The paper deals with the monounary algebras for which the second centralizer equals the first centralizer. We describe Green’s relations on the semigroup C, where C is the centralizer of such algebra.
Jakubíková-Studenovská D.   +1 more
doaj   +1 more source

Operator representation of Gevrey ultradistributions algebra with supports on positive $n$-dimensional angle

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2009
The representation of convolution Gevrey algebra ofultradistributions as commutant of the n-parametric stronglycontinuous semigroup of shifts in algebra of linear and continuousmappings over the space of ultradifferentiable Gevrey functionswith supports ...
A. V. Solomko
doaj  

广义循环布尔矩阵三明治半群中的完全正则元(The fully regular elements of the sandwich semigroup of generalized circulant Boolean matrices)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2011
Let n be a positive integer, and Cn(r) be the set of all n× nr-circulant matrices over the Boolean algebra B ={0, 1}, . For any fixed r-circulant matrix C(C≠0) in Gn.
CHENJin-song(陈锦松)   +1 more
doaj   +1 more source

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