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Commit 2021-04-03 07:42 51c9b60d

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feat(category_theory/biproducts): additional lemmas (#6881)

Estimated changes

Modified src/category_theory/limits/shapes/biproducts.lean

added def category_theory.limits.biproduct.components

added theorem category_theory.limits.biproduct.components_matrix

added theorem category_theory.limits.biproduct.lift_map

added theorem category_theory.limits.biproduct.lift_matrix

added theorem category_theory.limits.biproduct.map_desc

added def category_theory.limits.biproduct.map_iso

added theorem category_theory.limits.biproduct.map_matrix

added def category_theory.limits.biproduct.matrix

added theorem category_theory.limits.biproduct.matrix_components

added theorem category_theory.limits.biproduct.matrix_desc

added def category_theory.limits.biproduct.matrix_equiv

added theorem category_theory.limits.biproduct.matrix_map

added theorem category_theory.limits.biproduct.matrix_π

added theorem category_theory.limits.biproduct.ι_matrix