Results 11 to 20 of about 1,595,421 (249)
Brandt Extensions and Primitive Topological Inverse Semigroups [PDF]
International Journal of Mathematics and Mathematical Sciences, 2010 We study (countably) compact and (absolutely) 𝐻-closed primitive topological inverse semigroups. We describe the structure of compact and countably compact primitive topological inverse semigroups and show that any countably compact primitive topological
Tetyana Berezovski +2 more
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Closed inverse subsemigroups of graph inverse semigroups [PDF]
, 2016 As part of his study of representations of the polycylic monoids, Lawson described all the closed inverse submonoids of a polycyclic monoid Pn and classified them up to conjugacy.
A. Alali, N. D. Gilbert
semanticscholar +2 more sources
Amalgamating inverse semigroups over ample semigroups [PDF]
Proceedings of the Estonian Academy of SciencesWe consider semigroup amalgams (S; T1, T2) in which T1 and T2 are inverse semigroups and S is a non-inverse semigroup. They are known to be non-embeddable if T1 and T2 are both groups (Clifford semigroups), but S is not such. We prove that (S; T1, T2) is
Nasir Sohail
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Beyond Regular Semigroups [PDF]
, 2012 The topic of this thesis is the class of weakly U-abundant semigroups. This class is very wide, containing inverse, orthodox, regular, ample, adequate, quasi-adequate, concordant, abundant, restriction, Ehresmann and weakly abundant semigroups.
Wang, Yanhui
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Abelianness and centrality in inverse semigroups [PDF]
Proceedings of the Edinburgh Mathematical Society, 2022 We adapt the abstract concepts of abelianness and centrality of universal algebra to the context of inverse semigroups. We characterize abelian and central congruences in terms of the corresponding congruence pairs. We relate centrality to conjugation in
M. Kinyon, David Stanovsk'y
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On epimorphisms and structurally regular semigroups [PDF]
Categories and General Algebraic Structures with Applications, 2021 In this paper we study epimorphisms, dominions and related properties for some classes of structurally (n,m)-regular semigroups for any pair (n,m) of positive integers. In Section 2, after a brief introduction of these semigroups, we prove that the class
Aftab Shah +3 more
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$\pi$-inverse ordered semigroups [PDF]
Discussiones Mathematicae - General Algebra and Applications, 2023 This article deals with the generalization of $\pi$-inverse semigroups without order to ordered semigroups.
Amlan Jamadar
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Filtering germs: Groupoids associated to inverse semigroups [PDF]
Expositiones mathematicae, 2020 We investigate various groupoids associated to an arbitrary inverse semigroup with zero. We show that the groupoid of filters with respect to the natural partial order is isomorphic to the groupoid of germs arising from the standard action of the inverse
B. Armstrong +4 more
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Inverse semigroups with apartness [PDF]
Semigroup Forum, 2019 The notion of semigroups with apartness has been introduced recently as a constructive counterpart of classical semigroups. On such structures, a constructive analogue of the isomorphism theorem has been proved, and quasiorder relations and related ...
A. Cherubini, A. Frigeri
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Left (Right) Regular and Transposition Regular Semigroups and Their Structures
Mathematics, 2022 Regular semigroups and their structures are the most wonderful part of semigroup theory, and the contents are very rich. In order to explore more regular semigroups, this paper extends the relevant classical conclusions from a new perspective: by ...
Xiaohong Zhang, Yudan Du
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