English

Internal Parameterization of Hyperconnected Quotients

Category Theory 2025-10-16 v1

Abstract

One of the most fundamental facts in topos theory is the internal parameterization of subtoposes: the bijective correspondence between subtoposes and Lawvere-Tierney topologies. In this paper, we introduce a new but elementary concept, "a local state classifier," and give an analogous internal parameterization of hyperconnected quotients (i.e., hyperconnected geometric morphisms from a topos). As a corollary, we obtain a solution to the Boolean case of the first problem of Lawvere's open problems.

Keywords

Cite

@article{arxiv.2302.06851,
  title  = {Internal Parameterization of Hyperconnected Quotients},
  author = {Ryuya Hora},
  journal= {arXiv preprint arXiv:2302.06851},
  year   = {2025}
}

Comments

44pages

R2 v1 2026-06-28T08:39:32.613Z