存在量化
Sign in to saveAlso known as exist, exists, there exists, there exists at least one, ∃, for some, for one or more, there exists one or more
logical quantification stating that a statement holds for at least one object
Key facts
- Type
- Quantifier
- Field
- Mathematical logic
- Statement
- ∃ x P ( x ) {\displaystyle \exists xP(x)} is true when P ( x ) {\displaystyle P(x)} is true for at least one value of x {\displaystyle x} .
- Symbolic statement
- ∃ x P ( x ) {\displaystyle \exists xP(x)}
via Wikipedia infobox
Wikidata facts
- Subclass of
- quantifier
- Image
- Existential quantifier.svg
Show 2 more facts
- opposite of
- universal quantification
- maintained by WikiProject
- WikiProject Mathematics
Sources (2)
via Wikidata · CC0
Article · 中文
在谓词逻辑中，存在量化是对论域内至少一个成员的性质或关系的论断。在符号逻辑中，存在量词∃是用来指示存在量化的符号。 它相对于声称某些谓词对所有事物都为真的全称量化。
Abstract from DBpedia / Wikipedia · CC BY-SA