Semiprimeness of semigroup algebras
Abundant semigroups originate from p.p. rings and are generalizations of regular semigroups. The main aim of this paper is to study the primeness and the primitivity of abundant semigroup algebras. We introduce and study D∗{{\mathcal{D}}}^{\ast }-graphs and Fountain matrices of a semigroup. Based on...
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De Gruyter
2021
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oai:doaj.org-article:65f2f54595ee4fd2b3391acee0ffd4eb2021-12-05T14:10:52ZSemiprimeness of semigroup algebras2391-545510.1515/math-2021-0026https://doaj.org/article/65f2f54595ee4fd2b3391acee0ffd4eb2021-08-01T00:00:00Zhttps://doi.org/10.1515/math-2021-0026https://doaj.org/toc/2391-5455Abundant semigroups originate from p.p. rings and are generalizations of regular semigroups. The main aim of this paper is to study the primeness and the primitivity of abundant semigroup algebras. We introduce and study D∗{{\mathcal{D}}}^{\ast }-graphs and Fountain matrices of a semigroup. Based on D∗{{\mathcal{D}}}^{\ast }-graphs and Fountain matrices, we determine when a contracted semigroup algebra of a primitive abundant semigroup is prime (respectively, semiprime, semiprimitive, or primitive). It is well known that for any algebra A{\mathcal{A}} with unity, A{\mathcal{A}} is primitive (prime) if and only if so is Mn(A){M}_{n}\left({\mathcal{A}}). Our results can be viewed as some kind of generalizations of such a known result. In addition, it is proved that any contracted semigroup algebra of a locally ample semigroup whose set of idempotents is locally finite (respectively, locally pseudofinite and satisfying the regularity condition) is isomorphic to some contracted semigroup algebra of primitive abundant semigroups. Moreover, we obtain sufficient and necessary conditions for these classes of contracted semigroup algebras to be prime (respectively, semiprime, semiprimitive, or primitive). Finally, the structure of simple contracted semigroup algebras of idempotent-connected abundant semigroups is established. Our results enrich and extend the related results on regular semigroup algebras.Guo JunyingGuo XiaojiangDe Gruyterarticlesemigroup algebrasemiprimitive algebrasemiprime algebralocally ample semigroupprimitive abundant semigroupcomplete quiver20m2516s36MathematicsQA1-939ENOpen Mathematics, Vol 19, Iss 1, Pp 803-832 (2021) |
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DOAJ |
| collection |
DOAJ |
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EN |
| topic |
semigroup algebra semiprimitive algebra semiprime algebra locally ample semigroup primitive abundant semigroup complete quiver 20m25 16s36 Mathematics QA1-939 |
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semigroup algebra semiprimitive algebra semiprime algebra locally ample semigroup primitive abundant semigroup complete quiver 20m25 16s36 Mathematics QA1-939 Guo Junying Guo Xiaojiang Semiprimeness of semigroup algebras |
| description |
Abundant semigroups originate from p.p. rings and are generalizations of regular semigroups. The main aim of this paper is to study the primeness and the primitivity of abundant semigroup algebras. We introduce and study D∗{{\mathcal{D}}}^{\ast }-graphs and Fountain matrices of a semigroup. Based on D∗{{\mathcal{D}}}^{\ast }-graphs and Fountain matrices, we determine when a contracted semigroup algebra of a primitive abundant semigroup is prime (respectively, semiprime, semiprimitive, or primitive). It is well known that for any algebra A{\mathcal{A}} with unity, A{\mathcal{A}} is primitive (prime) if and only if so is Mn(A){M}_{n}\left({\mathcal{A}}). Our results can be viewed as some kind of generalizations of such a known result. In addition, it is proved that any contracted semigroup algebra of a locally ample semigroup whose set of idempotents is locally finite (respectively, locally pseudofinite and satisfying the regularity condition) is isomorphic to some contracted semigroup algebra of primitive abundant semigroups. Moreover, we obtain sufficient and necessary conditions for these classes of contracted semigroup algebras to be prime (respectively, semiprime, semiprimitive, or primitive). Finally, the structure of simple contracted semigroup algebras of idempotent-connected abundant semigroups is established. Our results enrich and extend the related results on regular semigroup algebras. |
| format |
article |
| author |
Guo Junying Guo Xiaojiang |
| author_facet |
Guo Junying Guo Xiaojiang |
| author_sort |
Guo Junying |
| title |
Semiprimeness of semigroup algebras |
| title_short |
Semiprimeness of semigroup algebras |
| title_full |
Semiprimeness of semigroup algebras |
| title_fullStr |
Semiprimeness of semigroup algebras |
| title_full_unstemmed |
Semiprimeness of semigroup algebras |
| title_sort |
semiprimeness of semigroup algebras |
| publisher |
De Gruyter |
| publishDate |
2021 |
| url |
https://doaj.org/article/65f2f54595ee4fd2b3391acee0ffd4eb |
| work_keys_str_mv |
AT guojunying semiprimenessofsemigroupalgebras AT guoxiaojiang semiprimenessofsemigroupalgebras |
| _version_ |
1718371645786161152 |