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arXiv · 2301.05730

Sifted Colimits, Strongly Finitary Monads and Continuous Algebras

Jiří Adámek·Matěj Dostál·Jiří Velebil
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Abstract

We characterize strongly finitary monads on categories $\mathsf{Pos}$, $\mathsf{CPO}$ and $\mathsf{DCPO}$ as precisely those preserving sifted colimits. Or, equivalently, enriched finitary monads preserving reflexive coinserters. We study sifted colimits in general enriched categories. For $\mathsf{CPO}$ and $\mathsf{DCPO}$ we characterize varieties of continuous algebras as precisely the monadic categories for strongly finitary monads.

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Jiří Adámek, Matěj Dostál, Jiří Velebil. 2023-01-13. Sifted Colimits, Strongly Finitary Monads and Continuous Algebras. https://arxiv.org/abs/2301.05730

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