English

Higher cyclic operads

Algebraic Topology 2019-03-20 v3 Category Theory

Abstract

We introduce a convenient definition for weak cyclic operads, which is based on unrooted trees and Segal conditions. More specifically, we introduce a category Ξ\Xi of trees, which carries a tight relationship to the Moerdijk-Weiss category of rooted trees Ω\Omega. We prove a nerve theorem exhibiting colored cyclic operads as presheaves on Ξ\Xi which satisfy a Segal condition. Finally, we produce a Quillen model category whose fibrant objects satisfy a weak Segal condition, and we consider these objects as an up-to-homotopy generalization of the concept of cyclic operad.

Keywords

Cite

@article{arxiv.1611.02591,
  title  = {Higher cyclic operads},
  author = {Philip Hackney and Marcy Robertson and Donald Yau},
  journal= {arXiv preprint arXiv:1611.02591},
  year   = {2019}
}

Comments

This version has been accepted to AGT. Substantial updates throughout, including an alternative description (suggested by the referee) of the morphisms of $\Xi$, a new appendix, and various other improvements

R2 v1 2026-06-22T16:45:45.544Z