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MK_PSELECT                                                 (PairRules)
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MK_PSELECT : (thm -> thm)

KEYWORDS
rule, quantifier, select, equality.

LIBRARY
pair

SYNOPSIS
Quantifies both sides of a universally quantified equational theorem with
the choice quantifier.

DESCRIBE
When applied to a theorem {A |- !p. t1 = t2}, the inference rule {MK_PSELECT}
returns the theorem {A |- (@x. t1) = (@x. t2)}.

       A |- !p. t1 = t2
   --------------------------  MK_PSELECT
    A |- (@p. t1) = (@p. t2)




FAILURE
Fails unless the theorem is a singly paired universally quantified equation.

SEEALSO
PairRules.PSELECT_EQ, PairRules.MK_PABS.

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