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Commit 2022-03-21 05:51 395019ee

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feat(algebra/homology/additive): dualise statement of chain complex to cochain complex (#12840)

Estimated changes

Modified src/algebra/homology/additive.lean

added def cochain_complex.single₀_map_homological_complex

added theorem cochain_complex.single₀_map_homological_complex_hom_app_succ

added theorem cochain_complex.single₀_map_homological_complex_hom_app_zero

added theorem cochain_complex.single₀_map_homological_complex_inv_app_succ

added theorem cochain_complex.single₀_map_homological_complex_inv_app_zero