Results 21 to 30 of about 341 (183)
Skew Pairs of Idempotents in Partial Transformation Semigroups
Mathematics, 2021 Let S be a regular semigroup. A pair (e,f) of idempotents of S is said to be a skew pair of idempotents if fe is idempotent, but ef is not. T. S. Blyth and M. H. Almeida (T. S. Blyth and M. H.
Panuwat Luangchaisri, Thawhat Changphas
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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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Thickness in topological transformation semigroups
International Journal of Mathematics and Mathematical Sciences, 1993 This article deals with thickness in topological transformation semigroups (τ-semigroups). Thickness is used to establish conditions guaranteeing an invariant mean on a function space defined on a τ-semigroup if there exists an invariant mean on its ...
Tyler Haynes
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Encryption using semigroup action
Ratio Mathematica, 2021 Anencipheringtransformationisafunctionf thatconvertsanyplaintext message into a ciphertext message and deciphering transformation is a function f−1, which reverse the process. Such a set-up is calledacryptosystem. Inthispaper,weextendageneralizationofthe
Indira Devi Anooja +2 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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On amenable transformation semigroups II
Kyoto Journal of Mathematics, 1976 [For parts I-IV see J. Math. Kyoto Univ. 16, 555-595 (1976; Zbl 0362.22005); ibid. 16, 597-626 (1976; Zbl 0362.22006); Sci. Rep. Kagoshima Univ. 25, 31-51 (1976; Zbl 0362.22007); and ibid. 31, 1-19 (1982; Zbl 0525.43001)]. In this paper the following problem is considered: if (S,X) is a transformation semigroup and \(Y\subset X\), when does there exist
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F1000ResearchThroughout this paper our study focuses on transformation semigroups. These kinds of semigroups are the corner stone of semigroup theory. This is because every semigroup is isomorphic to transformation semigroup.
Asawer Al-Aadhami, Hala M. Sulaiman
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Transformation semigroups associated to Γ-semigroups
Discussiones Mathematicae - General Algebra and Applications, 2013 The concept of Γ-semigroups is a generalization of semigroups. In this paper, we associate two transformation semigroups to a Γ-semigroup and we call them the left and right transformation semigroups. We prove some relationships between the ideals of a Γ-semigroup and the ideals of its left and right transformation semigroups.
Marzieh Amooshahi, Dariush Heidari
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On the maximum transform and semigroups of transformations [PDF]
Bulletin of the American Mathematical Society, 1962 Abstract : Part of the Project RAND research program consists of basic supporting studies in mathematics. A problem frequently occurring in applications is that of determining the maximum or minimum value of a function subject to prescribed constraints.
Bellman, Richard, Karush, William
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Characterization of quasi idempotent in semigroups of full contraction mappings
Proceedings of the Nigerian Society of Physical SciencesLet Tn be the semigroup of full transformation of a finite set and let Xn = {1, 2, · · · , n}. A transformation α : Domα ⊂ Xn →Im(α) ⊂ Xn is said to be full or total transformation if Domα = Xn.
Adediran Dauda Adeshola +3 more
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