[Merged by Bors] - feat(CategoryTheory): exact sequences#8152
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[Merged by Bors] - feat(CategoryTheory): exact sequences#8152
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| lemma exact_iff_of_iso {S₁ S₂ : ComposableArrows C n} (e : S₁ ≅ S₂) : | ||
| S₁.Exact ↔ S₂.Exact := | ||
| ⟨exact_of_iso e, exact_of_iso e.symm⟩ | ||
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Could you please add a statement that if you start with a ShortComplex and turn it into a ComposableArrows _ 2, then one is exact iff the other is exact?
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Thanks 🎉 bors merge |
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This PR defines the predicate `ComposableArrows.Exact`.
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Pull request successfully merged into master. Build succeeded: |
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This PR defines the predicate `ComposableArrows.Exact`.
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This PR defines the predicate
ComposableArrows.Exact.