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v3
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Mathlib v3 is deprecated.
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Theorem
set.nonempty.of_image
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_image
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2020-02-02 10:49
src/data/set/basic.lean
feat(data/set/basic): define `set.subsingleton` (#1939) …
Added
set.nonempty.of_image
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