subsemigroup 中文意思是什麼
subsemigroup
解釋
子半群-
Finally, we show that is a semilattice of groups congru - ence if and only if ( na ) u is a seminormal subsemigroup on 5, where pna is a group congruence on the semilattice congruence class sa of 5
在這一章的最後文章緒出了半群s上的半格同燃so上的群同余pno的並i 』 upe成為s上的群的半格同余的充分必要條件為u （ na切oeyoey是s的半正規子半群 -
Rough ideals in a semigroup have been studied and the concepts of rough subsemigroups, rough ideals been first introduced by kuroki n. under the condition of the congruence relation, rough sets of a subsemigroup was proved to be its subsemigroup, while that of a left ( right, bisides ) ideal was also proved to be its left ( right, bisides ) ideal. next, rough sets in a group have been studied and the concepts of rough subgroups, rough nornal subgroups been first introduced
Kurokin研究了半群中的粗理想，首次提出了粗子半群和粗理想的概念，證明了在同余關系下，半群的粗糙集是半群，左（右，雙）理想的粗糙集是左（右，雙）理想。接著，他又研究了群中的粗糙集，首次提出了粗子群和粗正規子群的概念，證明了在群中一固定的正規子群所決定的同余關系下，子群的粗糙集是子群，正規子群的粗糙集是正規子群。 -
Next, in the paper the concepts of fuzzy rough subsemigroups and fuzzy rough ideals in a semigroup are first given. in the sense of intersecting sets, fuzzy rough sets of a fuzzy subsemigroup is proved to be its fuzzy subsemigroup, while that of fuzzy ideal is also proved to be its fuzzy ideal
進而，本文在半群中首次提出了模糊粗糙子半群和模糊粗糙理想的概念，在截集意義下，證明了模糊子半群的模糊粗糙集是模糊子半群，模糊左（右，雙）理想的模糊粗糙集是模糊左（右，雙）理想。 -
Fuzzy rough subsemigroup
模糊粗糙子群
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