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Syntax Definition wif 1425
Description: Extend class notation to include the conditional operator for propositions.
Ref Expression
wph  wff  ph
wps  wff  ps
wch  wff  ch
Ref Expression
wif  wff if- ( ph ,  ps ,  ch )

See definition df-ifp 1426 for more information.

Colors of variables: wff setvar class
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