Results 61 to 70 of about 1,026,932 (240)

Expansions of inverse semigroups [PDF]

Journal of the Australian Mathematical Society, 2006
AbstractWe 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 actions of inverse semigroups.
Lawson, Mark V., Margolis, Stuart W., Steinberg, Benjamin   +2 more
openaire   +1 more source

Exponential Stability of Higher Order Fractional Neutral Stochastic Differential Equation Via Integral Contractors

Mathematical Methods in the Applied Sciences, Volume 48, Issue 6, Page 6425-6446, April 2025.
ABSTRACT The well‐posedness results for mild solutions to the fractional neutral stochastic differential system with Rosenblatt process with Hurst index Ĥ∈12,1$$ \hat{H}\in \left(\frac{1}{2},1\right) $$ is discussed in this article. To demonstrate the results, the concept of bounded integral contractors is combined with the stochastic result and ...
Dimplekumar N. Chalishajar, Dhanalakshmi Kasinathan, Ramkumar Kasinathan, Ravikumar Kasinathan   +3 more
wiley   +1 more source

Semigroups with inverse skeletons and Zappa-Sz'{e}p products [PDF]

Categories and General Algebraic Structures with Applications, 2013
The aim of this paper is to study semigroups possessing $E$-regular elements, where an element $a$ of a semigroup $S$ is {em $E$-regular} if $a$ has an inverse $a^circ$ such that $aa^circ,a^circ a$ lie in $ Esubseteq E(S)$. Where $S$ possesses `enough'
Victoria Gould, Rida-e- Zenab
doaj  

Distributive inverse semigroups and non-commutative Stone dualities [PDF]

, 2013
We develop the theory of distributive inverse semigroups as the analogue of distributive lattices without top element and prove that they are in a duality with those etale groupoids having a spectral space of identities, where our spectral spaces are not
Lawson, Mark V, Lenz, Daniel H
core  

Semigroup Closures of Finite Rank Symmetric Inverse Semigroups

, 2008
We introduce the notion of semigroup with a tight ideal series and investigate their closures in semitopological semigroups, particularly inverse semigroups with continuous inversion.
A. Abd-Allah, A.A. Beĭda, A.H. Clifford, A.H. Clifford, B.B. Baird, B.B. Baird, B.B. Baird, B.B. Baird, Dušan Repovš, H.P. Künzi, I.S. Yaroker, J.H. Carruth, J.H. Carruth, J.W. Stepp, J.W. Stepp, Jimmie Lawson, K. Kuratowski, K.D. Magill Jr., L.B. Šneperman, L.M. Gluskin, L.M. Gluskin, M. Petrich, O.V. Gutik, O.V. Gutik, Oleg Gutik, P.I. Booth, R. Engelking, R.J. Koch, S. Mendes-Gonçalves, S. Subbiah, S.D. Orlov, S.D. Orlov, V.V. Filippov, V.V. Wagner, W. Ruppert, Ľ. Holá   +35 more
core   +1 more source

Noncommutative polygonal cluster algebras

Journal of the London Mathematical Society, Volume 113, Issue 4, April 2026.
Abstract We define a new family of noncommutative generalizations of cluster algebras called polygonal cluster algebras. These algebras generalize the noncommutative surfaces of Berenstein–Retakh, and are inspired by the emerging theory of Θ$\Theta$‐positivity for the groups Spin(p,q)$\mathrm{Spin}(p,q)$.
Zachary Greenberg, Dani Kaufman, Merik Niemeyer, Anna Wienhard   +3 more
wiley   +1 more source

Duality for Evolutionary Equations With Applications to Null Controllability

Mathematical Methods in the Applied Sciences, Volume 49, Issue 5, Page 4144-4166, 30 March 2026.
ABSTRACT We study evolutionary equations in exponentially weighted L2$$ {\mathrm{L}}^2 $$‐spaces as introduced by Picard in 2009. First, for a given evolutionary equation, we explicitly describe the ν$$ \nu $$‐adjoint system, which turns out to describe a system backwards in time. We prove well‐posedness for the ν$$ \nu $$‐adjoint system. We then apply
Andreas Buchinger, Christian Seifert
wiley   +1 more source

Some Results on Smarandache Semigroups

Journal of Kufa for Mathematics and Computer, 2013
We discusse in this paper a Smarandache semigroups , a Smarandache  cyclic semigroups and a Smarandache lagrange semigroups.We prove that the Smarandache semigroup with multiplication modulo 2P where p is an odd prime have two subgroups of order P-1and
Sajda Kadhum Mohammed
doaj   +1 more source

Twisted actions and regular Fell bundles over inverse semigroups

, 2010
We introduce a new notion of twisted actions of inverse semigroups and show that they correspond bijectively to certain regular Fell bundles over inverse semigroups, yielding in this way a structure classification of such bundles.
Buss, Alcides, Exel, Ruy
core   +1 more source

Equivariant toric geometry and Euler–Maclaurin formulae

Communications on Pure and Applied Mathematics, Volume 79, Issue 3, Page 451-557, March 2026.
Abstract We first investigate torus‐equivariant motivic characteristic classes of toric varieties, and then apply them via the equivariant Riemann–Roch formalism to prove very general Euler–Maclaurin‐type formulae for full‐dimensional simple lattice polytopes.
Sylvain E. Cappell, Laurenţiu Maxim, Jörg Schürmann, Julius L. Shaneson   +3 more
wiley   +1 more source