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Countable base for a topology
Set
| context | $\langle X,T\rangle$ … topological space |
| definiendum | $B\in$ it |
| postulate | $B$ … base |
| postulate | $B$ … countable |
Discussion
A base $B$ for a topology is a collection its open sets, which suffice to cover any other open set.
Parents
Context
Subset of
