LEFT_OR_FORALL_CONV : conv
STRUCTURE
SYNOPSIS
Moves a universal quantification of the left disjunct outwards through a disjunction.
DESCRIPTION
When applied to a term of the form (!x.P) \/ Q, the conversion LEFT_OR_FORALL_CONV returns the theorem:
   |- (!x.P) \/ Q = (!x'. P[x'/x] \/ Q)
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 (!x.P) \/ Q.
SEEALSO
HOL  Kananaskis-14