collaborators

7 papers

math.AT2026

Relative dendroidal Rezk nerve and applications

Kensuke Arakawa, Victor Carmona, Francesca Pratali

We extend the dendroidal Rezk nerve to the setting of relative -operads. Our main theorem relates it to localization of -operads, generalizing a theorem of Mazel-Ge…

math.CT2026

On the equivalence of two approaches to multiplicative homotopy theories

Kensuke Arakawa

We study the relation of two frameworks for multiplicative homotopy theories: Presentably symmetric monoidal -categories and combinatorial symmetric monoidal model categori…

math.CT2026

Monoidal Relative Categories Model Monoidal -Categories

Kensuke Arakawa

We prove that the homotopy theory of monoidal relative categories is equivalent to that of monoidal -categories, and likewise in the symmetric monoidal setting. As an appli…

math.AT2026

Homotopy Limits and Homotopy Colimits of Chain Complexes

Kensuke Arakawa

We give a formula for homotopy limits and homotopy colimits of diagrams of chain complexes using the cobar and bar constructions, also known as the Bousfield--Kan formula. Along th…

math.CT2026

A short proof of the universality of the relative Rezk nerve

Kensuke Arakawa, Bastiaan Cnossen

We give a concise, conceptual proof of the universality of the relative Rezk nerve, due to Mazel-Gee.

math.AT2025

Classification diagrams of simplicial categories

Kensuke Arakawa

We show that the classification diagram of a relative -category arising from a relative simplicial category is equivalent to the levelwise nerve. Applications include the c…