Results 111 to 120 of about 1,595,421 (249)

Complete positivity order and relative entropy decay

Forum of Mathematics, Sigma
We prove that for a GNS-symmetric quantum Markov semigroup, the complete modified logarithmic Sobolev constant is bounded by the inverse of its complete positivity mixing time.
Li Gao, Marius Junge, Nicholas LaRacuente, Haojian Li   +3 more
doaj   +1 more source

A simplification of D'Alarcao's idempotent separating extensions of inverse semigroups

International Journal of Mathematics and Mathematical Sciences, 1978
In [2] D'Alarcao states necessary and sufficient conditions for the attainment of an idempotent-separating extension of an inverse semigroup. To do this D'Alarcao needed essentially three mappings satisfying thirteen conditions.
Constance C. Edwards
doaj   +1 more source

JOINS AND COVERS IN INVERSE SEMIGROUPS AND TIGHT ${C}^{\ast } $-ALGEBRAS

Bulletin of the Australian Mathematical Society, 2014
We show Exel’s tight representation of an inverse semigroup can be described in terms of joins and covers in the natural partial order. Using this, we show that the ${C}^{\ast } $-algebra of a finitely aligned category of paths, developed by Spielberg ...
Allan P. Donsig, David Milan
semanticscholar   +1 more source

Boolean Zero Square (BZS) Semigroups

Sultan Qaboos University Journal for Science
We introduce a new class of semigroups, that we call BZS - Boolean Zero Square-semigroups. A semigroup S with a zero element, 0, is said to be a BZS semigroup if, for every , we have or .
Pinto G.A.
doaj   +1 more source

Pseudo-amenability and pseudo-contractibility of restricted semigroup algebra

Annales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, 2018
In this article the pseudo-amenability and pseudo-contractibility of restricted semigroup algebra lr1(S) and semigroup algebra, l1(Sr) on restricted semigroup, Sr are investigated for different classes of inverse semigroups such as Brandt semigroup, and ...
Olufemi Johnson Ogunsola, Ifeyinwa E. Daniel   +1 more
doaj   +1 more source

Partial maps with domain and range: extending Schein's representation [PDF]

, 2009
The semigroup of all partial maps on a set under the operation of composition admits a number of operations relating to the domain and range of a partial map. Of particular interest are the operations R and L returning the identity on the domain of a map
Stokes, Tim E., Jackson, Marcel, Marcel Jackson, Tim Stokes   +3 more
core   +1 more source

Derivations and KMS-Symmetric Quantum Markov Semigroups. [PDF]

Commun Math Phys, 2023
Vernooij M, Wirth M.
europepmc   +1 more source

Restricted Algebras on Inverse Semigroups—Part II: Positive Definite Functions

International Journal of Mathematics and Mathematical Sciences, 2011
The relation between representations and positive definite functions is a key concept in harmonic analysis on topological groups. Recently this relation has been studied on topological groupoids.
Massoud Amini, Alireza Medghalchi
doaj   +1 more source

The Meir-Keeler Type for Solving Variational Inequalities and Fixed Points of Nonexpansive Semigroups in Banach Spaces

Journal of Applied Mathematics, 2012
The aim of this paper is to introduce a new iterative scheme for finding common solutions of the variational inequalities for an inverse strongly accretive mapping and the solutions of fixed point problems for nonexpansive semigroups by using the ...
Phayap Katchang, Poom Kumam
doaj   +1 more source

One-parameter inverse semigroups

, 1972
This is the second in a projected series of three papers, the aim of which is the complete description of the closure of any one-parameter inverse semigroup in a locally compact topological inverse semigroup.
John Selden, Carl Eberhart
core   +1 more source