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EXISTS_OR_CONV                                                  (Conv)
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EXISTS_OR_CONV : conv

SYNOPSIS
Moves an existential quantification inwards through a disjunction.

KEYWORDS
conversion, quantifier, existential, disjunction.

DESCRIBE
When applied to a term of the form {?x. P \/ Q}, the conversion
{EXISTS_OR_CONV} returns the theorem:

   |- (?x. P \/ Q) = (?x.P) \/ (?x.Q)




FAILURE
Fails if applied to a term not of the form {?x. P \/ Q}.

SEEALSO
Conv.OR_EXISTS_CONV, Conv.LEFT_OR_EXISTS_CONV,
Conv.RIGHT_OR_EXISTS_CONV.

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