Research paper

Asymptotics in finite monoidal categories

We give explicit formulas for the asymptotic growth rate of the number of summands in tensor powers in certain monoidal categories with finitely many indecomposable objects, and related structures.

monoidscategoriesgrowth

Data

  • Title: Asymptotics in finite monoidal categories
  • Authors: Abel Lacabanne, Daniel Tubbenhauer and Pedro Vaz
  • Status: Proc. Amer. Math. Soc. Ser. B 10 (2023), 398-412. Last update: Thu, 9 Nov 2023 08:10:44 UTC
  • ArXiv link: https://arxiv.org/abs/2307.03044
  • ArXiv version = 0.99 published version
  • LaTex Beamer presentation: Slides

Abstract

We give explicit formulas for the asymptotic growth rate of the number of summands in tensor powers in certain monoidal categories with finitely many indecomposable objects, and related structures.

What is the point?

We give explicit formulas for the asymptotic growth rate of the number of summands in tensor powers in certain monoidal categories with finitely many indecomposable objects, and related structures.

A picture

Asymptotics in finite monoidal categories illustration

A few extra words

The main theorems of the note give an explicit formula \(a(n)\) to compute the asymptotic growth of summands in tensor products \(b(n)\) for a large class of categories.
For example, for dihedral Soergel bimodules one gets as shown in the picture above. The note contains many more examples with explicit formulas.