Memoirs of the Faculty of Science, Shimane University

Faculty of Science, Shimane University

ISSN:0387-9925

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Use this link to cite this item : https://ir.lib.shimane-u.ac.jp/664

Memoirs of the Faculty of Science, Shimane University 26

1992-12-25 発行

半群における外的可換性と可換性

External Commutativity and Commutativity in Semigroups

Yamada, Miyuki

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A semigroup S is called externally commutative if S satisfies the permutation identity xyz zyx, In this paper the structure of externally commutative semigroups will be studied. It will be shown that an externally commutative semigroup IS a certain special ideal extension of a commutative semigroup by a null semigroup.

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c0010026r004.pdf 366 KB

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