c1stc - Metamath Proof Explorer

	Metamath Proof Explorer		< Previous Next > Nearby theorems
Mirrors > Home > MPE Home > Th. List > c1stc		Structured version Visualization version GIF version

Syntax Definition c1stc 23263

Description: Extend class definition to include the class of all first-countable topologies.

**Assertion**
Ref	Expression
c1stc	class 1^stω

See definition df-1stc 23265 for more information.

Colors of variables: wff setvar class