Relationship between ideals of BCI-algebras and order ideals of its adjoint semigroup

We consider the relationship between ideals of a BCI-algebra and order ideals of its adjoint semigroup. We show that (1) if I is an ideal, then I=M−1(M(I)), (2) M(M−1(J)) is the order ideal generated by J∩R(X), (3) if X is a BCK-algebra, then J=M(M−1(J)) for any order ideal J of X, thus, for each BC...

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Main Author: Michiro Kondo
Format: Article
Language:English
Published: Wiley 2001-01-01
Series:International Journal of Mathematics and Mathematical Sciences
Online Access:http://dx.doi.org/10.1155/S0161171201010985
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author Michiro Kondo
author_facet Michiro Kondo
author_sort Michiro Kondo
collection DOAJ
description We consider the relationship between ideals of a BCI-algebra and order ideals of its adjoint semigroup. We show that (1) if I is an ideal, then I=M−1(M(I)), (2) M(M−1(J)) is the order ideal generated by J∩R(X), (3) if X is a BCK-algebra, then J=M(M−1(J)) for any order ideal J of X, thus, for each BCK-algebra X there is a one-to-one correspondence between the set ℐ(X) of all ideals of X and the set 𝒪(X) of all order ideals of it, and (4) the order M(M−1(J)) is an order ideal if and only if M−1(J) is an ideal. These results are the generalization of those denoted by Huang and Wang (1995) and Li (1999). We can answer the open problem of Li affirmatively.
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spelling doaj-art-cf027510910a4b93a6ff8452a35018212025-02-03T07:24:50ZengWileyInternational Journal of Mathematics and Mathematical Sciences0161-17121687-04252001-01-0128953554310.1155/S0161171201010985Relationship between ideals of BCI-algebras and order ideals of its adjoint semigroupMichiro Kondo0Department of Mathematics and Computer Science, Shimane University, Matsue 690-8504, JapanWe consider the relationship between ideals of a BCI-algebra and order ideals of its adjoint semigroup. We show that (1) if I is an ideal, then I=M−1(M(I)), (2) M(M−1(J)) is the order ideal generated by J∩R(X), (3) if X is a BCK-algebra, then J=M(M−1(J)) for any order ideal J of X, thus, for each BCK-algebra X there is a one-to-one correspondence between the set ℐ(X) of all ideals of X and the set 𝒪(X) of all order ideals of it, and (4) the order M(M−1(J)) is an order ideal if and only if M−1(J) is an ideal. These results are the generalization of those denoted by Huang and Wang (1995) and Li (1999). We can answer the open problem of Li affirmatively.http://dx.doi.org/10.1155/S0161171201010985
spellingShingle Michiro Kondo
Relationship between ideals of BCI-algebras and order ideals of its adjoint semigroup
International Journal of Mathematics and Mathematical Sciences
title Relationship between ideals of BCI-algebras and order ideals of its adjoint semigroup
title_full Relationship between ideals of BCI-algebras and order ideals of its adjoint semigroup
title_fullStr Relationship between ideals of BCI-algebras and order ideals of its adjoint semigroup
title_full_unstemmed Relationship between ideals of BCI-algebras and order ideals of its adjoint semigroup
title_short Relationship between ideals of BCI-algebras and order ideals of its adjoint semigroup
title_sort relationship between ideals of bci algebras and order ideals of its adjoint semigroup
url http://dx.doi.org/10.1155/S0161171201010985
work_keys_str_mv AT michirokondo relationshipbetweenidealsofbcialgebrasandorderidealsofitsadjointsemigroup