2 papers
math.CT2026
A study of Kock's fat Delta
Tom de Jong, Nicolai Kraus, Simona Paoli +1
Motivated by the study of weak identity structures in higher category theory we explore the fat Delta category, a modification of the simplex category introduced by J. Kock and pro…
math.CT2025
On combinatorial aspects of fat Delta
Stiéphen Pradal
The category fat Delta, introduced by J. Kock, is a modification of the simplex category where the degeneracies behave weakly. The objective of this note is to provide tools for wo…