- #1
mvCristi
I made up it, I didn't find anything about it, so, maybe, I'm the inventor.
The question is: How do different set theories handle the following definition?
U := {x : (x belongs_to A) and ( Not(A is_included_in Powerset( EmptySet)) )}
If possible in the set theory, require (A is_set). But it doesn't really matter.
The set U is interesting for some reasons.
The question is: How do different set theories handle the following definition?
U := {x : (x belongs_to A) and ( Not(A is_included_in Powerset( EmptySet)) )}
If possible in the set theory, require (A is_set). But it doesn't really matter.
The set U is interesting for some reasons.