NFE Home New Foundations Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  NFE Home  >  Th. List  >  csn GIF version

Syntax Definition csn 3737
Description: Extend class notation to include singleton.
Hypothesis
Ref Expression
cA class A
Assertion
Ref Expression
csn class {A}

See definition df-sn 3741 for more information.

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