LEFT_OR_PEXISTS_CONV : conv
STRUCTURE
LIBRARY
pair
SYNOPSIS
Moves a paired existential quantification of the left disjunct outwards through a disjunction.
DESCRIPTION
When applied to a term of the form (?p. t) \/ u, the conversion LEFT_OR_PEXISTS_CONV returns the theorem:
   |- (?p. t) \/ u = (?p'. t[p'/p] \/ u)
where p' is a primed variant of the pair p that does not contain any variables free in the input term.
FAILURE
Fails if applied to a term not of the form (?p. t) \/ u.
SEEALSO
HOL  Kananaskis-14