EXISTS_NOT_CONV

Conv.EXISTS_NOT_CONV : conv

Moves an existential quantification inwards through a negation.

When applied to a term of the form ?x.~P, the conversion EXISTS_NOT_CONV returns the theorem:

   |- (?x.~P) = ~(!x. P)

Failure

Fails if applied to a term not of the form ?x.~P.

See also

Conv.FORALL_NOT_CONV, Conv.NOT_EXISTS_CONV, Conv.NOT_FORALL_CONV