# Category:Cardinal Class

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This category contains results about Cardinal Class.

The **class of cardinals** is the class consisting of all cardinal numbers:

- $\NN = \set {x \in \On: \exists y: x = \size y}$

where $\size y$ denotes the cardinal number corresponding to $y$.

## Pages in category "Cardinal Class"

The following 3 pages are in this category, out of 3 total.