https://en.wikipedia.org/wiki/Opposite_categoryarrow-up-right https://en.wikipedia.org/wiki/Dual_(category_theoryarrow-up-right)
Each category 𝒞 has a reverse category, denoted by 𝒞ᵒᵖ, which is a category like 𝒞 but with all the arrows reversed.
𝒞
𝒞ᵒᵖ
Last updated 4 years ago