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Theorem set.preimage_Union

Modification history

2022-01-24 12:47
src/data/set/lattice.lean
chore(data/set/lattice): Generalize more `⋃`/`⋂` lemmas to dependent families (#11516) …
Modified set.preimage_UnionView on Github →
2021-03-09 16:22
src/data/set/lattice.lean
feat(measure/pi): prove extensionality for `measure.pi` (#6304) …
Modified set.preimage_UnionView on Github →
2017-12-08 08:32
data/set/lattice.lean
feat(data/dardinal): wellordering of cardinals
Added set.preimage_UnionView on Github →
2017-09-28 18:07
data/set/lattice.lean
feat(topology): add Borel spaces
Deleted set.preimage_UnionView on Github →
2017-09-22 12:52
data/set/lattice.lean
feat(data/set): add functions over sets
Added set.preimage_UnionView on Github →
2017-09-22 12:31
data/set/lattice.lean
feat(topology/topological_space): add countablility and separability axioms for topological spaces
Deleted set.preimage_UnionView on Github →
2017-08-02 22:32
data/set/lattice.lean
refactor(data/set/basic,*): vimage -> preimage, add notation
Added set.preimage_UnionView on Github →