PEXISTS_OR_CONV : conv
STRUCTURE
PairRules
LIBRARY
pair
SYNOPSIS
Moves a paired existential quantification inwards through a disjunction.
DESCRIPTION
When applied to a term of the form ?p. t \/ u, the conversion PEXISTS_OR_CONV returns the theorem: 
   |- (?p. t \/ u) = (?p. t) \/ (?p. u)

FAILURE
Fails if applied to a term not of the form ?p. t \/ u.
SEEALSO
EXISTS_OR_CONV, OR_PEXISTS_CONV, LEFT_OR_PEXISTS_CONV, RIGHT_OR_PEXISTS_CONV
HOL  Kananaskis-14