opposite): Adds some instances and lemmas (#8202)

Commit

4 years ago

feat(category_theory/preadditive/opposite): Adds some instances and lemmas (#8202) This PR adds some instances and lemmas related to opposites and additivity of functors.

Author

adamtopaz

Parents

0b0d8e7e

mathlib f2edc5a3 - feat(category_theory/preadditive/opposite): Adds some instances and lemmas (#8202)

mathlib
f2edc5a3 - feat(category_theory/preadditive/opposite): Adds some instances and lemmas (#8202)