# Category:Element of Ordinal is Ordinal

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This category contains pages concerning **Element of Ordinal is Ordinal**:

Let $n$ be an ordinal.

Let $m \in n$.

Then $m$ is also an ordinal.

That is, the class of all ordinals $\On$ is a transitive class.

## Pages in category "Element of Ordinal is Ordinal"

The following 4 pages are in this category, out of 4 total.