3 papers
math.GT2025
Restricted (2+1)-TQFTs supported by thickened and solid tori
Dušan Đorđević, Danica Kosanović, Jovana Nikolić +1
A faithful TQFT has recently been constructed, but the existence of a faithful TQFT remains an open question, that subsumes the hard problem of linearity of mapping…
math.LO2024
Coherence for logicians
Zoran Petric, Mladen Zekic
This paper is addressed to logicians not familiar with category theory. It gives a new proof of coherence for symmetric monoidal closed categories, proven by Kelly and Mac Lane in…
math.CO2023
Chromatic numbers for facet colouring of some generalised associahedra
Djordje Baralic, Jelena S. Ivanovic, Zoran Petric
The chromatic number related to a colouring of facets of certain classes of generalised associahedra is studied. The exact values are obtained for permutohedra, associahedra and si…