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

wph  
vx  
vy 
Ref  Expression 

wcdeq  CondEq 
Colors of variables: wff set class 
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