English

Duality for Clans: an Extension of Gabriel-Ulmer Duality

Category Theory 2025-01-20 v3 Logic in Computer Science Logic

Abstract

Clans are representations of generalized algebraic theories that contain more information than the finite-limit categories associated to the locally finitely presentable categories of models via Gabriel-Ulmer duality. Extending Gabriel-Ulmer duality to account for this additional information, we present a duality theory between clans and locally finitely presentable categories equipped with a weak factorization system of a certain kind.

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Cite

@article{arxiv.2308.11967,
  title  = {Duality for Clans: an Extension of Gabriel-Ulmer Duality},
  author = {Jonas Frey},
  journal= {arXiv preprint arXiv:2308.11967},
  year   = {2025}
}

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36 pages