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Theorem topological_space.opens.is_basis_iff_nbhd

Modification history

2019-03-03 19:05
src/topology/basic.lean
chore(topology): Splits topology.basic and topology.continuity (#785) …
Modified topological_space.opens.is_basis_iff_nbhdView on Github →
2018-11-05 09:50
analysis/topology/topological_space.lean
refactor(topology/topological_space): rename open_set to opens and unbundle it (#427)
Added topological_space.opens.is_basis_iff_nbhdView on Github →