A comparison of definitions of equivariant trees
Algebraic Topology
2026-03-06 v1 Category Theory
Abstract
We show that various categories of trees can be modeled by Grothendieck constructions on categories of trees with a fixed set of leaves. We prove this result for the dendroidal category , the category of trees with a -action for a finite group , and finally for the category of genuine equivariant trees that has played an important role in recent work on genuine equivariant operads.
Keywords
Cite
@article{arxiv.2512.14956,
title = {A comparison of definitions of equivariant trees},
author = {Julia E. Bergner and Maxine E. Calle and David Chan and Angélica M. Osorno and Maru Sarazola},
journal= {arXiv preprint arXiv:2512.14956},
year = {2026}
}
Comments
28 pages. Comments welcome!