Results 31 to 40 of about 35,172 (254)
Journal of Algebra, 2015 A left Ehresmann semigroup \(S\) is a semigroup equipped with an additional unary operation \(^+\) satisfying the following identities: \(x^+x=x\), \((x^+y^+)^+=x^+y^+=y^+x^+\), \((xy)^+=(xy^+)^+\). The set \(E_S=\{s^+\mid s\in S\}\) is called \textit{the semilattice of projections} of \(S\) (under a natural partial order) or \textit{the distinguished ...
Mário J.J. Branco +2 more
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Ordered Monoids and J-Trivial Monoids [PDF]
, 2000 The aim of this paper is to give a new proof of the following result of Straubing and Thérien (which is also a consequence of a well-known result of I. Simon): Every J-trivial monoid is a quotient of an ordered monoid satisfying the identity x
Henckell, Karsten, Pin, Jean-Eric
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On Naturally Ordered Abundant Semigroups with an Adequate Monoid Transversal
Discrete Dynamics in Nature and Society, 2019 In this paper, we study a class of naturally ordered abundant semigroups with an adequate monoid transversal, namely, naturally ordered concordant semigroups with an adequate monoid transversal.
Wei Chen
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Group Fuzzy Languages and its Generalizations
Ratio Mathematica, 2023 In fuzzy language theory, every monoid is the syntactic monoid of some fuzzy language. By using this result the properties of fuzzy language can be studied by the algebraic properties of the syntactic monoids. There are so many methods for studying fuzzy
Archana Vasudevan Pillai Prasanna +2 more
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Noetherianity for infinite-dimensional toric varieties [PDF]
, 2015 We consider a large class of monomial maps respecting an action of the infinite symmetric group, and prove that the toric ideals arising as their kernels are finitely generated up to symmetry.
Draisma, Jan +3 more
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International Journal of Mathematics and Mathematical Sciences, 1997 A comultiplication on a monoid S is a homomorphism m:S→S∗S (the free product of S with itself) whose composition with each projection is the identity homomorphism.
Martin Arkowitz, Mauricio Gutierrez
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On endomorphisms of groups of orders 37–47; pp. 137–150 [PDF]
Proceedings of the Estonian Academy of Sciences, 2017 It is proved that the finite groups of orders 37â47 are determined by their endomorphism monoids in the class of all groups.
Alar Leibak, Peeter Puusemp
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Finite coverings of semigroups and related structures [PDF]
International Journal of Group Theory, 2023 For a semigroup $S$, the covering number of $S$ with respect to semigroups, $\sigma_s(S)$, is the minimum number of proper subsemigroups of $S$ whose union is $S$.
Casey Donoven, Luise-Charlotte Kappe
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Journal of the Australian Mathematical Society. Series A. Pure Mathematics and Statistics, 1992 AbstractThis paper is concerned with a new notion of coherency for monoids. A monoid S is right coherent if the first order theory of right S-sets is coherent; this is equivalent to the property that every finitely generated S-subset of every finitely presented right S-set is finitely presented.
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