Post History
#1: Initial revision
Existence of a set of all sets
Suppose that we have an axiomatic set theory having the following axiom: **The Axiom Schema of Comprehension:** Let $\mathbf{P}(x)$ be a property of $x$. For any set $A$, there is a set $B$ such that $x\in B$ if and only if $x\in A$ and $\mathbf{P}(x)$. Can a set of all sets exist within such an axiomatic system?