ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  wsbc GIF version

Syntax Definition wsbc 2764
Description: Extend wff notation to include the proper substitution of a class for a set. Read this notation as "the proper substitution of class 𝐴 for setvar variable 𝑥 in wff 𝜑."
Hypotheses
Ref Expression
wph wff 𝜑
vx setvar 𝑥
cA class 𝐴
Assertion
Ref Expression
wsbc wff [𝐴 / 𝑥]𝜑

See definition df-sbc 2765 for more information.

Colors of variables: wff set class
  Copyright terms: Public domain W3C validator