MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  cun Structured version   Visualization version   GIF version

Syntax Definition cun 3424
Description: Extend class notation to include union of two classes (read: "𝐴 union 𝐵").
Hypotheses
Ref Expression
cA class 𝐴
cB class 𝐵
Assertion
Ref Expression
cun class (𝐴𝐵)

See definition df-un 3431 for more information.

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