# Category:Cardinality

This category contains results about Cardinality.
Definitions specific to this category can be found in Definitions/Cardinality.

Two sets (either finite or infinite) which are equivalent are said to have the same cardinality.

The cardinality of a set $S$ is written $\card S$.

## Subcategories

This category has the following 8 subcategories, out of 8 total.