English

$2$-Categories from a Gray Perspective

Category Theory 2022-03-17 v1

Abstract

In this paper we present 22-category theory from the perspective of Gray-categories using the graphical calculus of separated surface diagrams. As an extended example we consider cones and limits of 22-functors. Then we use the canonical adjunction between 22-computads and 22-categories to interpret the comparison structure of lax functors and extend the surface diagram calculus with compositor sheets in order to represent and reason about them.

Keywords

Cite

@article{arxiv.2203.08783,
  title  = {$2$-Categories from a Gray Perspective},
  author = {Edward Morehouse},
  journal= {arXiv preprint arXiv:2203.08783},
  year   = {2022}
}
R2 v1 2026-06-24T10:16:00.910Z