Automorphism groups of superextensions of finite monogenic semigroups

A family L of subsets of a set X is called linked if A ∩ B ≠ ∅ for any A,B ∈ L. A linked family M of subsets of X is maximal linked if M coincides with each linked family L on X that contains M. The superextension λ(X) of X consists of all maximal linked families on X. Any associative binary operat...

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Veröffentlicht in:Algebra and Discrete Mathematics
Datum:2019
Hauptverfasser: Banakh, T.O., Gavrylkiv, V.M.
Format: Artikel
Sprache:Englisch
Veröffentlicht: Інститут прикладної математики і механіки НАН України 2019
Online Zugang:https://nasplib.isofts.kiev.ua/handle/123456789/188431
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Назва журналу:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Zitieren:Automorphism groups of superextensions of finite monogenic semigroups / T.O. Banakh, V.M. Gavrylkiv // Algebra and Discrete Mathematics. — 2019. — Vol. 27, № 2. — С. 165–190. — Бібліогр.: 24 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
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Zusammenfassung:A family L of subsets of a set X is called linked if A ∩ B ≠ ∅ for any A,B ∈ L. A linked family M of subsets of X is maximal linked if M coincides with each linked family L on X that contains M. The superextension λ(X) of X consists of all maximal linked families on X. Any associative binary operation ∗ : X ×X → X can be extended to an associative binary operation ∗ : λ(X) × λ(X) → λ(X). In the paper we study automorphisms of the superextensions of finite monogenic semigroups and characteristic ideals in such semigroups. In particular, we describe the automorphism groups of the superextensions of finite monogenic semigroups of cardinality 6 5.
ISSN:1726-3255