Higher presentable categories and limits
Category Theory
2025-10-16 v1 Algebraic Topology
Logic
Abstract
Stefanich generalized the notion of (locally) presentable -category to the notion of presentable -category. We give a new description based on the new notion of -compactly generated -category, which avoids universe enlargement. Using the new definition, we prove the underlying functor of a morphism between presentable -categories has a right adjoint. In particular, any presentable -category has limits. We also prove that this fails drastically when we go higher: The unit presentable -category, i.e., the category of presentable -categories, does not have limits. This settles Stefanich's conjecture in the negative.
Cite
@article{arxiv.2510.13503,
title = {Higher presentable categories and limits},
author = {Ko Aoki},
journal= {arXiv preprint arXiv:2510.13503},
year = {2025}
}
Comments
14 pages