翻訳と辞書
Words near each other
・ Weak focusing
・ Weak form and strong form
・ Weak formulation
・ Weak generative capacity
・ Weak gravitational lensing
・ Weak Hausdorff space
・ Weak heap
・ Weak Hopf algebra
・ Weak hypercharge
・ Weak in the Presence of Beauty
・ Weak in the Presence of Beauty (album)
・ Weak in the Presence of Beauty (song)
・ Weak inflection
・ Weak interaction
・ Weak interpretability
Weak inverse
・ Weak isospin
・ Weak key
・ Weak localization
・ Weak measurement
・ Weak Moments of the Shadows
・ Weak n-category
・ Weak noun
・ Weak NP-completeness
・ Weak ontology
・ Weak ontology (political concept)
・ Weak operator topology
・ Weak ordering
・ Weak position (poetry)
・ Weak reference


Dictionary Lists
翻訳と辞書 辞書検索 [ 開発暫定版 ]
スポンサード リンク

Weak inverse : ウィキペディア英語版
Weak inverse

In mathematics, the term weak inverse is used with several meanings.
== Theory of semigroups ==
In the theory of semigroups, a weak inverse of an element ''x'' in a semigroup is an element ''y'' such that . If every element has a weak inverse, the semigroup is called an ''E''-inversive or ''E''-dense semigroup. An ''E''-inversive semigroup may equivalently be defined by requiring that for every element ''x'' ∈ ''S'', there exists ''y'' ∈ ''S'' such that ''xy'' and ''yx'' are idempotents.〔 (preprint )〕
An element ''x'' of ''S'' for which there is an element ''y'' of ''S'' such that is called regular. A regular semigroup is a semigroup in which every element is regular. This is a stronger notion than weak inverse. Every ''E''-inversive semigroup is regular, but not vice versa.〔
If every element ''x'' in ''S'' has a unique inverse ''y'' in ''S'' in the sense that and then ''S'' is called an inverse semigroup.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Weak inverse」の詳細全文を読む



スポンサード リンク
翻訳と辞書 : 翻訳のためのインターネットリソース

Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.