English Dictionary

cardinality

名詞

集合

(set theory, of a set) The number of elements a given set contains. / (type theory) The number of terms that can inhabit a type; the possible values of a type.

日本語の意味

集合論において、ある集合が含む要素の数（集合内の元の数）。 / 型理論において、型が取りうる項（値）の数、または可能な値の数。

To compare infinite sets, mathematicians often examine their cardinality rather than relying on intuition.

無限集合を比較するために、数学者はしばしば直感に頼るのではなく、それらの集合の要素数を調べる。

意味（1）

(set theory, of a set) The number of elements a given set contains.

The empty set has a cardinality of zero.

意味（2）

(type theory) The number of terms that can inhabit a type; the possible values of a type.

For many types, such as String, the set of possible values is unlimited. Such types have an infinite cardinality.

意味（3）

(data modeling, databases) The property of a relationship between a database table and another one, specifying whether it is one-to-one, one-to-many, many-to-one, or many-to-many.

意味（4）

(religion) The status of being cardinalitial

cardinalities （ plural ）