3-category
In mathematics, especially in category theory, a 3-category is a 2-category together with 3-morphisms. It comes in at least three flavors a strict 3-category, a semi-strict 3-category also called a Gray category, a weak 3-category.
In mathematics, especially in category theory, a 3-category is a 2-category together with 3-morphisms. It comes in at least three flavors a strict 3-category, a semi-strict 3-category also called a Gray category, a weak 3-category.
In mathematics, especially in category theory, a 3-category is a 2-category together with 3-morphisms. It comes in at least three flavors a strict 3-category, a semi-strict 3-category also called a Gray category, a weak 3-category.
Source: Wikipedia "3-category" · CC BY-SA 4.0
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