/sci/ - Science & Math

>tfw you take LaTeX a little too far

https://arxiv.org/pdf/1808.04902.pdf
>Mackey 2-functors and Mackey 2-motives
>Paul Balmer, Ivo Dell'Ambrogio
>(Submitted on 14 Aug 2018)
>We study collections of additive categories M(G), indexed by finite groups G and related by induction and restriction in a way that categorifies usual Mackey functors. We call them `Mackey 2-functors' and provide a large collection of examples. We then isolate the initial such structure, leading to what we call `Mackey 2-motives'. We also exhibit a convenient calculus of morphisms in Mackey 2-motives, by means of string diagrams.
>many beautiful figures