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Syntax Definition wsbc 2758
Description: Extend wff notation to include the proper substitution of a class for a set. Read this notation as "the proper substitution of class for setvar variable in wff ."
Hypotheses
Ref Expression
wph
vx  setvar
cA
Assertion
Ref Expression
wsbc  [.  ].

See definition df-sbc 2759 for more information.

Colors of variables: wff set class
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