Results 61 to 70 of about 259 (129)
On the semigroup of monoid endomorphisms of the semigroup $\mathscr{C}_{+}(a,b)$
10 ...
Gutik, Oleg, Penza, Sher-Ali
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Product decompositions of semigroups induced by action pairs
, 2023 This paper concerns a class of semigroups that arise as products $US$, associated to what we call `action pairs'. Here $U$ and $S$ are subsemigroups of a common monoid and, roughly speaking, $S$ has an action on the monoid completion $U^1$ that is ...
Zenab, Rida-e +4 more
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The automorphisms of endomorphism semigroups of relatively free groups
, 2018 The question of describing the automorphisms of [Formula: see text] for a free algebra [Formula: see text] in a certain variety was considered by different authors since 2002.
H. T. Aslanyan, V. S. Atabekyan
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Automorphisms of the endomorphism semigroup of a free commutative g-dimonoid
, 2016 We determine all isomorphisms between the endomorphism semigroups of free commutative g-dimonoids and prove that all automorphisms of the endomorphism semigroup of a free commutative g-dimonoid are quasi ...
Zhuchok, Y.V.
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Markov branching processes and semigroups of operators
, 1965 In this paper we study the semigroups of operators associated with Markov branching processes. Our approach is based on the semigroup of operators associated with the generating function of the probabilities of a given branching process. Let F(s, t) = ∑x
Bharucha-Reid, A.T.
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Endomorphism semigroups of finite subset algebras
Discrete Mathematics, 1974 AbstractFor an arbitrary set X, if (X) denotes the collection of finite subsets of X, then ((X),∩,∪,-) is called the finite subset algebra of X (which we also denote by (X)). Because of the many natural occurrences of finite subset algebras, the intent of this paper is to initiate an investigation of the semigroup, End (X), of endomorphisms of (X ...
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(0,1)-Matrices and semigroups of ring endomorphisms
Semigroup Forum, 1972 In this paper we investigate semigroups of ring endomorphisms of several classes of rings. As one result we find that the Green relations in the endomorphism semigroup, End R, for a ring R in a given class, are restrictions of those in the transformation semigroup .
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Simple semigroups in finite categories
, 2022 12 pagesIn this paper, we classify finite categories with two objects such that one of the endomorphism monoids is a group. We prove that having a group on one side affects the structure of the other endomorphism monoid, and we prove that it is going to ...
Simpson, Carlos, Ghannoum, Najwa
core
Basic positively closed classes in three-valued logic
, 2018 Basic positively closed classes are intersections of positively precomplete classes. We prove that three-valued logic contains exactly 79 basic positively closed classes. Each class is described in terms of endomorphism semigroups.
Sergey S. Marchenkov +1 more
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A complete classification of endomorphisms of Kiselman’s semigroup
Semigroup ForumAbstract Kiselman’s semigroup $$K_n$$ K n was studied by Kudryavtseva and Mazorchuk, who posed the question of whether it is possible to classify all endomorphisms of
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