# Commit 2021-06-09 06:11 c210d0fd

View on Github →feat(topology/category/limits): Topological bases in cofiltered limits (#7820)
This PR proves a theorem which provides a simple characterization of certain topological bases in a cofiltered limit of topological spaces.
Eventually I will specialize this assertion to the case where the topological spaces are profinite, and the `T i`

are the topological bases given by clopen sets.
This generalizes a lemma from LTE.