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Commit 2021-11-21 22:33 d17db717

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chore(*): golf proofs about filter.Coprod (#10400) Also add some supporting lemmas.

Estimated changes

Modified src/data/fintype/basic.lean

added theorem fintype.coe_pi_finset

Modified src/data/pi.lean

added theorem function.bijective_pi_map

added theorem function.injective_pi_map

added theorem function.surjective_pi_map

Modified src/data/set/finite.lean

Modified src/order/boolean_algebra.lean

added theorem compl_surjective

Modified src/order/filter/basic.lean

added theorem filter.compl_mem_Coprod_iff

Modified src/order/filter/cofinite.lean

Modified src/topology/subset_properties.lean