MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  csb Structured version   Visualization version   GIF version
Syntax Definition csb 3832
Description: Extend class notation to include the proper substitution of a class for a set into another class.
Hypotheses
Ref Expression
vx setvar 𝑥
cA class 𝐴
cB class 𝐵
Assertion
Ref Expression
csb class ⦋𝐴 / 𝑥⦌𝐵
See definition df-csb 3833 for more information.
Colors of variables: wff setvar class
  Copyright terms: Public domain W3C validator