Mathlib Changelog
v3
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Mathlib v3 is deprecated.
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Theorem
finset.card_eq_sum_card_fiberwise
Modification history
2020-10-01 02:57
src/algebra/big_operators/basic.lean
feat(data/fintype): pigeonhole principles (#4096) …
Added
finset.card_eq_sum_card_fiberwise
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