Definition 1.1.1 (Pure Set).label A set $x$ is pure if given any finite sequence $x_{n}\in x_{n-1}\in\cds\in x_{1}\in x_{0}=x$, all of $x_{i}$ are sets.
Definition 1.1.1 (Pure Set).label A set $x$ is pure if given any finite sequence $x_{n}\in x_{n-1}\in\cds\in x_{1}\in x_{0}=x$, all of $x_{i}$ are sets.
Post a Comment