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Theorem set.nonempty_image

Modification history

2020-02-02 10:49
src/data/set/basic.lean
feat(data/set/basic): define `set.subsingleton` (#1939) …
Deleted set.nonempty_imageView on Github →
2019-04-20 20:07
src/data/set/basic.lean
feat(data/[fin]set): add some more basic properties of (finite) sets (#948) …
Added set.nonempty_imageView on Github →