# category 中文

EN[ˈkæɾəˌɡɒɹi] [ˈkatɪɡ(ə)ɹi]US

名种类

- 名词 (Noun)PLcategoriesSUF-ory
- A group, often named or numbered, to which items are assigned based on similarity or defined criteria.
- (mathematics) A collection of objects, together with a transitively closed collection of composable arrows between them, such that every object has an identity arrow, and such that arrow composition is associative.
- One well-known
**category**has sets as objects and functions as arrows. - Just as a monoid consists of an underlying set with a binary operation "on top of it" which is closed, associative and with an identity, a
**category**consists of an underlying digraph with an arrow composition operation "on top of it" which is transitively closed, associative, and with an identity at each object. In fact, a category's composition operation, when restricted to a single one of its objects, turns that object's set of arrows (which would all be loops) into a monoid.

- One well-known

- A group, often named or numbered, to which items are assigned based on similarity or defined criteria.
- 更多范例
- 用于句中
- “The dating industry has come a long way since its inception, but the
**category**remains underpenetrated.” - If slice
**category**C over X has two objects (A, f) and (B, g) and a morphism h : (A, f) → (B, g), then this morphism would correspond to a like-named morphism h : A → B of C such that . - We also find gluthatione metabolism (assigned to the
**category**“Others”) in a middle position, with a CV of 0.6, and it is highlighted in kidney.

- “The dating industry has come a long way since its inception, but the

- 用于句中

## Definition of __category__ in English Dictionary

- 词类阶层 (Part-of-Speech Hierarchy)
- 名词
- 可数名词

- 可数名词

- 名词

资料来源: 维基词典