Kleisli categories, T-categories and internal categories

Fuente: arXiv
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Main Author: Bourn, Dominique
Format: Preprint
Published: 2024
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author Bourn, Dominique
author_facet Bourn, Dominique
contents We investigate the properties of the Kleisli category KlT of a monad (T,λ,μ) on a category E and in particular the existence of (some kind of) pullbacks. This culminates when the monad is cartesian. In this case, we show that any T-category in E in the sense of A. Burroni coincides with a special kind of internal category in KlT . So, it is the case in particular for T -operads and T -multicategories. More unexpectedly, this, in turn, sheds new lights on internal categories and n-categories.
format Preprint
id arxiv_https___arxiv_org_abs_2401_11781
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Kleisli categories, T-categories and internal categories
Bourn, Dominique
Category Theory
8C20, 18D40, 18M60, 18M65, 18N50
We investigate the properties of the Kleisli category KlT of a monad (T,λ,μ) on a category E and in particular the existence of (some kind of) pullbacks. This culminates when the monad is cartesian. In this case, we show that any T-category in E in the sense of A. Burroni coincides with a special kind of internal category in KlT . So, it is the case in particular for T -operads and T -multicategories. More unexpectedly, this, in turn, sheds new lights on internal categories and n-categories.
title Kleisli categories, T-categories and internal categories
topic Category Theory
8C20, 18D40, 18M60, 18M65, 18N50
url https://arxiv.org/abs/2401.11781