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Syntax Definition cif 3699
Description: Extend class notation to include the conditional operator. See df-if 3700 for a description. (In older databases this was denoted "ded".)
Ref Expression
wph  wff  ph
cA  class  A
cB  class  B
Ref Expression
cif  class  if (
ph ,  A ,  B )

See definition df-if 3700 for more information.

Colors of variables: wff set class
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