nLab surface diagram

Contents

Contents

Idea

Surface diagrams categorify string diagrams: while string diagram calculus describes the composition of morphisms in 2-categories, surface diagram calculus describes composition of morphisms in (non-strict) 3-categories.

Variants

There are several discussions and variation of surface diagrams available.

While all of the above notions are “in essence” equivalent, they differ in some of their technical details.

References

Last revised on September 1, 2024 at 14:17:13. See the history of this page for a list of all contributions to it.