RIGHT_IMP_EXISTS_CONV : conv
STRUCTURE
SYNOPSIS
Moves an existential quantification of the consequent outwards through an implication.
DESCRIPTION
When applied to a term of the form P ==> (?x.Q), the conversion RIGHT_IMP_EXISTS_CONV returns the theorem:
   |- P ==> (?x.Q) = (?x'. P ==> (Q[x'/x]))
where x' is a primed variant of x that does not appear free in the input term.
FAILURE
Fails if applied to a term not of the form P ==> (?x.Q).
SEEALSO
HOL  Kananaskis-10