Basic properties ofe-inversive semigroups
作者:
Heinz Mitsch,
Mario Petrich,
期刊:
Communications in Algebra
(Taylor Available online 2000)
卷期:
Volume 28,
issue 11
页码: 5169-5182
ISSN:0092-7872
年代: 2000
DOI:10.1080/00927870008827148
出版商: Gordon and Breach Science Publishers Ltd.
数据来源: Taylor
摘要:
Generalizing a property of regular resp. finite semigroups a semigroup S is called E-(0-) inversive if for every a ∈S4(a ≠ 0) there exists x ∈Ssuch that ax (≠ 0) is an idempotent. Several characterizations are given allowing to identify the (completely, resp. eventually) regular semigroups in this class. The case that for every a ∈S4(≠ 0) there exist x,y ∈Ssuch that ax = ya(≠ 0) is an idempotent, is dealt with also. Ideal extensions of E- (0-)inversive semigroups are studied discribing in particular retract extensions of completely simple semigroups. The structure of E- (0-)inversive semigroups satisfying different cancellativity conditions is elucidated. 1991 AMS classification number: 20M10.
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