A sketchy note on enriched homotopical topologies and enriched homotopical stacks

Adjoint functor theorems for homotopically enriched categories

We prove an adjoint functor theorem in the setting of categories enriched in a monoidal model category $\mathcal V$ admitting certain limits. When $\mathcal V$ is equipped with the trivial model structure this recaptures the enriched version of Freyd's adjoint functor theorem. For non-trivial model structures, we obtain new adjoint functor theorems of a homotopical flavour - in particular, when $\mathcal V$ is the category of simplical sets we obtain a homotopical adjoint functor theorem appropriate to the $\infty$-cosmoi of Riehl and Verity. We also investigate accessibility in the enriched s…

Homotopy limits and colimits and enriched homotopy theory

Homotopy limits and colimits are homotopical replacements for the usual limits and colimits of category theory, which can be approached either using classical explicit constructions or the modern abstract machinery of derived functors. Our first goal in this paper is expository: we explain both approaches and a proof of their equivalence. Our second goal is to generalize this result to enriched categories and homotopy weighted limits, showing that the classical explicit constructions still give the right answer in the abstract sense. This result partially bridges the gap between classical homo…

通过充实同伦理论的三范畴普遍性质

Tricategorical Universal Properties Via Enriched Homotopy Theory

本文通过充实于Gray模型范畴的同伦良好极限与余极限，建立了三范畴极限与余极限的理论，并将其应用于伪单子Kleisli构造、中心构造及双范畴严格化等具体结构。

图表范畴的同伦识别

Homotopical recognition of diagram categories

本文通过引入同伦原子概念，刻画了模型范畴与预层范畴Quillen等价的判定条件，并将其应用于分类从有限带点单纯集到谱的多项式函子，推广了Dwyer-Kan轨道模型结构等经典结果。

General Comodule-Contramodule Correspondence

This paper is a fundamental study of comodules and contramodules over a comonoid in a symmetric closed monoidal category. We study both algebraic and homotopical aspects of them. Algebraically, we enrich the comodule and contramodule categories over the original category, construct enriched functors between them and enriched adjunctions between the functors. Homotopically, for simplicial sets and topological spaces, we investigate the categories of comodules and contramodules and the relations between them.

Morita theory in enriched context

We develop a homotopy theoretical version of classical Morita theory using the notion of a strong monad. It was Anders Kock who proved that a monad T in a monoidal category E is strong if and only if T is enriched in E. We prove that this correspondence between strength and enrichment follows from a 2-isomorphism of 2-categories. Under certain conditions on T, we prove that the category of T-algebras is Quillen equivalent to the category of modules over the endomorphism monoid of the T-algebra T(I) freely generated by the unit I of E. In the special case where E is the category of Gamma-spaces…