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Theorem finset.fiber_card_ne_zero_iff_mem_image

Modification history

2021-12-18 18:09
src/data/finset/basic.lean
split(data/finset/*): Split `data.finset.card` and `data.finset.fin` off `data.finset.basic` (#10796) …
Modified finset.fiber_card_ne_zero_iff_mem_imageView on Github →
2020-10-01 02:57
src/data/finset/basic.lean
feat(data/fintype): pigeonhole principles (#4096) …
Added finset.fiber_card_ne_zero_iff_mem_imageView on Github →