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Theorem set.nonempty_of_nonempty_preimage

Modification history

2022-12-07 20:30
src/data/set/basic.lean
refactor(data/set/basic): move image, preimage, and range to a new file (#17842) …
Modified set.nonempty_of_nonempty_preimageView on Github →
2021-12-18 20:11
src/data/set/basic.lean
refactor(measure_theory/measure/hausdorff): change Hausdorff measure definition at 0 (#10859) …
Added set.nonempty_of_nonempty_preimageView on Github →