MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  csb Structured version   Visualization version   Unicode version
Syntax Definition csb 3533
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 3534 for more information.
Colors of variables: wff setvar class
  Copyright terms: Public domain W3C validator