NOT_FORALL_CONV
Conv.NOT_FORALL_CONV : conv
Moves negation inwards through a universal quantification.
When applied to a term of the form ~(!x.P), the conversion
NOT_FORALL_CONV returns the theorem:
|- ~(!x.P) = ?x.~P
It is irrelevant whether x occurs free in P.
Failure
Fails if applied to a term not of the form ~(!x.P).
See also
Conv.EXISTS_NOT_CONV,
Conv.FORALL_NOT_CONV,
Conv.NOT_EXISTS_CONV