Results 81 to 90 of about 1,035 (227)

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

C*-algebras of inverse semigroups

, 2008
Motivated by a number of important examples of C*-algebras generated by an inverse semigroup of partial isometries, we look to use the algebraic theory of inverse semigroups to describe the structure of the C*-algebras they generate.
Milan, David
core  

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

A note on Morita equivalence to graph inverse semigroups

, 2023
We characterize the inverse semigroups that are Morita equivalent to graph inverse semigroups. We also consider a generalization to inverse semigroups associated with left cancellative categories.Comment: 10 pages, fixed an error in the proof of the main
Milan, David, Lira, Evan, Grimley, Robert, Preez, Martha Du, Ramamurthy, Shreyas   +4 more
core   +1 more source

Expansions of inverse semigroups

, 2002
We construct the freest idempotent-pure expansion of an inverse semigroup, generalizing an expansion of Margolis and Meakin for the group case. We also generalize the Birget-Rhodes prefix expansion to inverse semigroups with an application to partial ...
Mark V. Lawson, Benjamin Steinberg, Stuart W. Margolis   +2 more
core  

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

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

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

An Extension of a result of Csiszar

International Journal of Mathematics and Mathematical Sciences, 1986
We extend the results of Csiszar (Z. Wahr. 5(1966) 279-295) to a topological semigroup S. Let μ be a measure defined on S. We consider the value of α=supKcompactlimn→∞supx∈Sμn(Kx−1). First. we show that the value of α is either zero or one.
P. B. Cerrito
doaj   +1 more source