---------------------------------------------------------------------- LEFT_OR_FORALL_CONV (Conv) ---------------------------------------------------------------------- LEFT_OR_FORALL_CONV : conv SYNOPSIS Moves a universal quantification of the left disjunct outwards through a disjunction. KEYWORDS conversion, quantifier, universal, disjunction. DESCRIBE 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 Conv.OR_FORALL_CONV, Conv.FORALL_OR_CONV, Conv.RIGHT_OR_FORALL_CONV. ----------------------------------------------------------------------