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Theorem preimage_sUnion

Modification history

2017-12-08 08:32
data/set/lattice.lean
feat(data/dardinal): wellordering of cardinals
Deleted preimage_sUnionView on Github →
2017-09-28 18:07
data/set/lattice.lean
feat(topology): add Borel spaces
Added preimage_sUnionView on Github →
2017-09-22 12:52
data/set/lattice.lean
feat(data/set): add functions over sets
Deleted preimage_sUnionView on Github →
2017-09-22 12:31
data/set/lattice.lean
feat(topology/topological_space): add countablility and separability axioms for topological spaces
Added preimage_sUnionView on Github →