String diagram

In mathematics, string diagrams are a formal graphical language for representing morphisms in monoidal categories, or more generally 2-cells in 2-categories. They are a prominent tool in applied category theory.

Source: Wikipedia — String diagram (CC BY-SA 4.0)

String diagram

In mathematics, string diagrams are a formal graphical language for representing morphisms in monoidal categories, or more generally 2-cells in 2-categories. They are a prominent tool in applied category theory.

Source: Wikipedia "String diagram" · CC BY-SA 4.0

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