Algebraic theory of finite semigroups
John Rhodes (1969-1970)
Séminaire Dubreil. Algèbre et théorie des nombres
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Displaying similar documents to “Theses in Algebra Defended at Serbian Universities”
Algebraic theory of finite semigroups
Notes on semimedial semigroups
Fitore Abdullahu, Abdullah Zejnullahu (2009)
Commentationes Mathematicae Universitatis Carolinae
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The class of semigroups satisfying semimedial laws is studied. These semigroups are called semimedial semigroups. A connection between semimedial semigroups, trimedial semigroups and exponential semigroups is presented. It is proved that the class of strongly semimedial semigroups coincides with the class of trimedial semigroups and the class of dimedial semigroups is identical with the class of exponential semigroups.
On generalized Ehresmann semigroups
Shoufeng Wang (2017)
Open Mathematics
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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. In particular, Gomes and Gould construct a fundamental Ehresmann semigroup CE from a semilattice E which plays for Ehresmann semigroups the role that TE plays for inverse semigroups, where TE is the Munn semigroup of a semilattice E. From a varietal perspective, Ehresmann semigroups are derived from reduction...
The structure of -regular semigroups
Janet Ault, Mario Petrich (1969-1970)
Séminaire Dubreil. Algèbre et théorie des nombres
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Some remarks on T-semigroups
Janusz Woś (1982)
Colloquium Mathematicae
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A representation theorem for I-medial and for generalized inverse semigroups.
F.P. Gagnon (1981)
Semigroup forum
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Fundamental order relations on inverse semigroups and on their generalizations.
Simon M. Goberstein (1980)
Semigroup forum
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Regular * semigroups.
T.E. Nordahl, H.E. Scheiblich (1978)
Semigroup forum
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Semigroups of order 8.
S. Satoh, K. Yama, M. Tokizawa (1994)
Semigroup forum
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On V n -semigroups
Ze Gu, Xilin Tang (2015)
Open Mathematics
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In this paper, we give some new characterizations of orthodox semigroups in terms of the set of inverses of idempotents. As a generalization, a new class of regular semigroups, namely Vn-semigroups, is introduced. Also, we give a characterization of Vn-semigroups and investigate some properties of Vn-semigroups. Furthermore, we show that the class of Vn-semigroups is closed under direct products and homomorphic images. However, regular subsemigroups of Vn-semigroups (n ≥ 2) are not necessarily...