Results 31 to 40 of about 760 (210)
Generating the full transformation semigroup using order preserving mappings [PDF]
, 2003 For a linearly ordered set X we consider the relative rank of the semigroup of all order preserving mappings O-X on X modulo the full transformation semigroup Ex. In other words, we ask what is the smallest cardinality of a set A of mappings such that =
Higgins, PM +2 more
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On maximal subgroups of free idempotent generated semigroups [PDF]
, 2011 We prove the following results: (1) Every group is a maximal subgroup of some free idempotent generated semigroup. (2) Every finitely presented group is a maximal subgroup of some free idempotent generated semigroup arising from a finite semigroup.
Ruskuc, N. +5 more
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Partial Menger algebras and their weakly isomorphic representation
Mathematics Open, 2022 As generalization of semigroups, Karl Menger introduced in the 1940th algebras of multiplace operations. Such algebras satisfy the superassociative law, a generalization of the associative law.
K. Denecke
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Magnifiers in Some Generalization of the Full Transformation Semigroups
Mathematics, 2020 An element a of a semigroup S is called a left [right] magnifier if there exists a proper subset M of S such that a M = S ( M a = S ) .
Thananya Kaewnoi +2 more
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Endomorphism monoids of semilattices of semigroups
Науковий вісник Ужгородського університету. Серія: Математика і інформатика, 2017 We prove that the endomorphism monoid of a semilattice of semigroups, which are semilattice indecomposable, is isomorphically embedded into the wreath product of a transformation semigroup with a small category.
Ю. В. Жучок
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Green index and finiteness conditions for semigroups [PDF]
, 2008 Let S be a semigroup and let T be a subsemigroup of S. Then T acts on S by left and by right multiplication. If the complement S \ T has finitely many strong orbits by both these actions we say that T has finite Green index in S.
R. Gray +7 more
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Generating continuous mappings with Lipschitz mappings [PDF]
, 2007 If X is a metric space, then C-X and L-X denote the semigroups of continuous and Lipschitz mappings, respectively, from X to itself. The relative rank of C-X modulo L-X is the least cardinality of any set U\L-X where U generates C-X. For a large class of
Mitchell, James David +2 more
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Coregular semigroups of full transformations
Demonstratio Mathematica, 2011 AbstractThis paper is mainly dedicated to the description of coregular subsemigroups of the symmetric ...
Ilinka Dimitrova, Joerg Koppitz
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gap-packages/Semigroups: 3.0.2 [PDF]
, 2017 <p>This is an minor release fixing some minor issues in the last<br> release. </p> <p>The following issues were resolved:</p> <p>* [Issue 330](https://github.com/gap-packages/Semigroups/issues/330 ...
Torpey, Michael +51 more
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On the Transformation Semigroups of Finite Automata
Journal of Computer and System Sciences, 1983 AbstractNecessary and sufficient conditions for a given automaton to be of left identity type, of identity type, of right group type, of group type quasi state independent, and state independent are presented. The time required to decide whether or not each condition holds for a given automaton is also estimated under the uniform cost criterion.
Toshimasa Watanabe, Akira Nakamura
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