The Order of Hypersubstitutions of Type (2,1)

Hypersubstitutions are mappings which map operation symbols to terms of the corresponding arities. They were introduced as a way of making precise the concept of a hyperidentity and generalizations to 𝑀-hyperidentities. A variety in which every identity is satisfied as a hyperidentity is called soli...

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Main Authors: Tawhat Changphas, Wonlop Hemvong
Format: Article
Language:English
Published: Wiley 2011-01-01
Series:International Journal of Mathematics and Mathematical Sciences
Online Access:http://dx.doi.org/10.1155/2011/615014
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author Tawhat Changphas
Wonlop Hemvong
author_facet Tawhat Changphas
Wonlop Hemvong
author_sort Tawhat Changphas
collection DOAJ
description Hypersubstitutions are mappings which map operation symbols to terms of the corresponding arities. They were introduced as a way of making precise the concept of a hyperidentity and generalizations to 𝑀-hyperidentities. A variety in which every identity is satisfied as a hyperidentity is called solid. If every identity is an 𝑀-hyperidentity for a subset 𝑀 of the set of all hypersubstitutions, the variety is called 𝑀-solid. There is a Galois connection between monoids of hypersubstitutions and sublattices of the lattice of all varieties of algebras of a given type. Therefore, it is interesting and useful to know how semigroup or monoid properties of monoids of hypersubstitutions transfer under this Galois connection to properties of the corresponding lattices of 𝑀-solid varieties. In this paper, we study the order of each hypersubstitution of type (2,1), that is, the order of the cyclic subsemigroup of the monoid of all hypersubstitutions of type (2,1) generated by that hypersubstitution.
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spelling doaj-art-defe7e20013c4d30b84f12645f60b9622025-02-03T01:33:17ZengWileyInternational Journal of Mathematics and Mathematical Sciences0161-17121687-04252011-01-01201110.1155/2011/615014615014The Order of Hypersubstitutions of Type (2,1)Tawhat Changphas0Wonlop Hemvong1Department of Mathematics, Khon Kaen University, Khon Kaen 40002, ThailandDepartment of Mathematics, Khon Kaen University, Khon Kaen 40002, ThailandHypersubstitutions are mappings which map operation symbols to terms of the corresponding arities. They were introduced as a way of making precise the concept of a hyperidentity and generalizations to 𝑀-hyperidentities. A variety in which every identity is satisfied as a hyperidentity is called solid. If every identity is an 𝑀-hyperidentity for a subset 𝑀 of the set of all hypersubstitutions, the variety is called 𝑀-solid. There is a Galois connection between monoids of hypersubstitutions and sublattices of the lattice of all varieties of algebras of a given type. Therefore, it is interesting and useful to know how semigroup or monoid properties of monoids of hypersubstitutions transfer under this Galois connection to properties of the corresponding lattices of 𝑀-solid varieties. In this paper, we study the order of each hypersubstitution of type (2,1), that is, the order of the cyclic subsemigroup of the monoid of all hypersubstitutions of type (2,1) generated by that hypersubstitution.http://dx.doi.org/10.1155/2011/615014
spellingShingle Tawhat Changphas
Wonlop Hemvong
The Order of Hypersubstitutions of Type (2,1)
International Journal of Mathematics and Mathematical Sciences
title The Order of Hypersubstitutions of Type (2,1)
title_full The Order of Hypersubstitutions of Type (2,1)
title_fullStr The Order of Hypersubstitutions of Type (2,1)
title_full_unstemmed The Order of Hypersubstitutions of Type (2,1)
title_short The Order of Hypersubstitutions of Type (2,1)
title_sort order of hypersubstitutions of type 2 1
url http://dx.doi.org/10.1155/2011/615014
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