摘要
称半群S强可收缩,若S的每个子半群都是它的一个缩回.本文逐次刻划了强可收缩的群、完全单半群、强可收缩的半格及正则半群的结构,在此基础上给出了任意强可收缩半群的结构定理.
A semigroup S is called strongly retractable, if each of its subsemigroups is a retract of S. In this paper, strongly retractable groups, strongly retractable completely simple semigroups, strongly retractable semilattices and strongly retractable regular semigroups are successively characterized and finally a structure theorem for general strongly retractable semigroups is given.
出处
《数学学报(中文版)》
SCIE
CSCD
北大核心
2000年第5期861-870,共10页
Acta Mathematica Sinica:Chinese Series
基金
国家自然科学基金!(19671063)
四川省教委基金