identity element 意味
EN日単位元, id 要素 ウ単位元
- 数学、とくに抽象代数学において、単位元(たんいげん, 英: identity element)あるいは中立元(ちゅうりつげん, 英: neutral element)は、二項演算を備えた集合の特別な元で、ほかのどの元もその二項演算による単位元との結合の影響を受けない。
- 名詞 (Noun)PLidentity elementsSUF-ement
- (algebra) A member of a structure which, when applied to any other element via a binary operation, induces an identity mapping; more specifically, given an operation *, an element I is.
- a left identity if I * x = x for any x in the structure
- a right identity, x * I = x for any x in the structure
- simply an identity element if both are true
- (algebra) A member of a structure which, when applied to any other element via a binary operation, induces an identity mapping; more specifically, given an operation *, an element I is.
Definition of identity element in English Dictionary
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出典: ウィクショナリー