Results 21 to 30 of about 108,334 (223)

Produk Cartesius Semipgrup Smarandache

open access: yesJurnal Matematika, 2012
Smarandache semigroups is an expansion of semigroup structure, by taking a proper subset of semigroups which is in form of group. But, a proper subset which is in form of group cannot always be found in semigroups.
Yuliyanti Dian Pratiwi
doaj   +1 more source

On algebraic geometry over completely simple semigroups [PDF]

open access: yesInternational Journal of Group Theory, 2019
We study equations over completely simple semigroups and describe the coordinate semigroups of irreducible algebraic sets for such semigroups.
Artem Shevlyakov
doaj   +1 more source

Self-Automaton Semigroups [PDF]

open access: yes, 2014
After reviewing automaton semigroups, we introduce Cayley Automata and the corresponding Cayley Automaton semigroups. We investigate which semigroups are isomorphic to their Cayley Automaton semigroup and give some results for special classes of ...
McLeman, Alexander
core   +1 more source

Nilpotent Semigroups and Semigroup Algebras

open access: yesJournal of Algebra, 1994
First, the structure of nilpotent semigroups is discussed. If \(S\) is a completely 0-simple semigroup over a maximal group \(G\), then \(S\) is nilpotent if and only if \(G\) is nilpotent and \(S\) is an inverse semigroup. The main results on semigroup algebras are very interesting, but technical; they examine the prime homomorphic images of semigroup
Jespers, E., Okninski, J.
openaire   +1 more source

Non-commutative Stone duality: inverse semigroups, topological groupoids and C*-algebras [PDF]

open access: yes, 2012
We study a non-commutative generalization of Stone duality that connects a class of inverse semigroups, called Boolean inverse $\wedge$-semigroups, with a class of topological groupoids, called Hausdorff Boolean groupoids. Much of the paper is given over
Lawson, Mark V
core   +1 more source

On generalized Ehresmann semigroups

open access: yesOpen Mathematics, 2017
As a generalization of the class of inverse semigroups, the class of Ehresmann semigroups is introduced by Lawson and investigated by many authors extensively in the literature.
Wang Shoufeng
doaj   +1 more source

Asymptotic expansions for Yosida approximations of semigroups

open access: yesLietuvos Matematikos Rinkinys, 2008
In this paper we provide asymptotic expansions for Yosida approximations of contraction semigroups. We also obtain optimal bounds for convergencerate and remainder terms of asymptotic expansions.
Monika Vilkienė
doaj   +1 more source

Linear inequations with 5-digit and regularity conditions on ordered ternary semigroups [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2021
We investigate linear inequations with 5-digit of regular elements of ordered ternary semigroups, define the notions of ordered weakly left ideals, ordered weakly right ideals and ordered strong bi-ideals of ordered ternary semigroups, give some ...
Patchara Pornsurat   +2 more
doaj   +1 more source

Chomp on numerical semigroups [PDF]

open access: yes, 2018
We consider the two-player game chomp on posets associated to numerical semigroups and show that the analysis of strategies for chomp is strongly related to classical properties of semigroups.
García-Marco, Ignacio, Knauer, Kolja
core   +3 more sources

Ideals and Green's relations in ordered semigroups

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
Exactly as in semigroups, Green's relations play an important role in the theory of ordered semigroups—especially for decompositions of such semigroups.
Niovi Kehayopulu
doaj   +1 more source

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