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Theorem prod_equiv

Modification history

2020-05-01 21:31
src/data/fintype/card.lean
chore(group_theory/perm): delete duplicate lemmas (#2584) …
Deleted prod_equivView on Github →
2020-04-24 21:12
src/data/fintype/card.lean
feat(data/list): more lemmas on joins and sums (#2501) …
Added prod_equivView on Github →