c4 - Metamath Proof Explorer

	Metamath Proof Explorer		< Previous Next > Nearby theorems
Mirrors > Home > MPE Home > Th. List > c4		Structured version Visualization version GIF version

Syntax Definition c4 11960

Description: Extend class notation to include the number 4.

**Assertion**
Ref	Expression
c4	class 4

See definition df-4 11968 for more information.

Colors of variables: wff setvar class