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Theorem
mem_image_univ_iff_mem_range
Modification history
2020-05-27 01:18
src/data/fintype/basic.lean
feat(ring_theory/fintype): in a finite nonzero_semiring, fintype.card (units R) < fintype.card R (#2793)
Added
mem_image_univ_iff_mem_range
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