English

Costability of Comodules

Category Theory 2024-10-01 v4 Algebraic Topology Rings and Algebras

Abstract

Given a ring RR, we have a classical result stating that the ordinary category of modules is the abelianization of the category of augmented RR-algebras. Analogously, using the framework of infinity categories and higher algebra, Francis showed that the infinity category of RR-modules is the stabilization of the infinity category of augmented RR-algebras. In this work we show a dual result for coalgebras over a cooperad QQ: namely that given a coalgebra CC, comodules over CC are the costabilization of coalgebras over CC, which is the universal stable category with a finite colimit preserving functor to coalgebras over CC.

Keywords

Cite

@article{arxiv.2404.08082,
  title  = {Costability of Comodules},
  author = {Fei Yu Chen},
  journal= {arXiv preprint arXiv:2404.08082},
  year   = {2024}
}
R2 v1 2026-06-28T15:51:51.157Z