User:Dfeuer/Set is Class
Jump to navigation
Jump to search
Axiom
Let $S$ be a set.
Then $S$ is a class.
That is, if $\mathbb U$ is the universal class, then:
- $\forall x: x \in \mathbb U \implies x \subseteq \mathbb U$
That is, $\mathbb U$ is transitive.