===== Countable base for a topology ===== ==== Set ==== | @#55CCEE: context | @#55CCEE: $\langle X,T\rangle$ ... topological space | | @#FFBB00: definiendum | @#FFBB00: $B\in$ it | | @#55EE55: postulate | @#55EE55: $B$ ... base | | @#55EE55: postulate | @#55EE55: $B$ ... countable | ==== Discussion ==== ==== Parents ==== === Context === [[Topological space]] === Subset of === [[Base for a topology]], [[Countable set]]