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Mirrors > Home > MPE Home > Th. List > wcdeq  Unicode version 
Description: Extend wff notation to
include conditional equality. This is a technical
device used in the proof that F/ is the
notfree predicate, and that
definitions are conservative as a result. 
Ref  Expression 

wph  
vx  
vy 
Ref  Expression 

wcdeq 
Colors of variables: wff setvar class 
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