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DOI: 10.4230/LIPIcs.FSCD.2025.13

Unifying Boolean and Algebraic Descriptive Complexity

Authors: Baptiste Chanus, Damiano Mazza, and Morgan Rogers

Published in: LIPIcs, Volume 337, 10th International Conference on Formal Structures for Computation and Deduction (FSCD 2025)

Abstract

We introduce ultrarings, which simultaneously generalize commutative rings and Boolean lextensive categories. As such, they allow to blend together standard algebraic notions (from commutative algebra) and logical notions (from categorical logic), providing a unifying descriptive framework in which complexity classes over arbitrary rings (as in the Blum, Schub, Smale model) and usual, Boolean complexity classes may be captured in a uniform way.

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Baptiste Chanus, Damiano Mazza, and Morgan Rogers. Unifying Boolean and Algebraic Descriptive Complexity. In 10th International Conference on Formal Structures for Computation and Deduction (FSCD 2025). Leibniz International Proceedings in Informatics (LIPIcs), Volume 337, pp. 13:1-13:22, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2025)

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@InProceedings{chanus_et_al:LIPIcs.FSCD.2025.13,
  author =	{Chanus, Baptiste and Mazza, Damiano and Rogers, Morgan},
  title =	{{Unifying Boolean and Algebraic Descriptive Complexity}},
  booktitle =	{10th International Conference on Formal Structures for Computation and Deduction (FSCD 2025)},
  pages =	{13:1--13:22},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-374-4},
  ISSN =	{1868-8969},
  year =	{2025},
  volume =	{337},
  editor =	{Fern\'{a}ndez, Maribel},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.FSCD.2025.13},
  URN =		{urn:nbn:de:0030-drops-236286},
  doi =		{10.4230/LIPIcs.FSCD.2025.13},
  annote =	{Keywords: Descriptive complexity theory, Categorical logic, Blum-Shub-Smale complexity}
}

Document

DOI: 10.4230/LIPIcs.FSCD.2025.26

Functorial Models of Differential Linear Logic

Authors: Marie Kerjean, Valentin Maestracci, and Morgan Rogers

Published in: LIPIcs, Volume 337, 10th International Conference on Formal Structures for Computation and Deduction (FSCD 2025)

Abstract

Differentiation in logic has several sources of inspiration. The most recent is differentiable programming, models of which demand functoriality and good typing properties. More historical is reverse denotational semantics, taking inspiration from models of Linear Logic to differentiate proofs and λ-terms. In this paper, we take advantage of the rich structure of categorical models of Linear Logic to give a new functorial presentation of differentiation. We define differentiation as a functor from a coslice of the category of smooth maps to the category of linear maps. Extending linear-non-linear adjunction models of Linear Logic, this produces models of Differential Linear Logic. We use these functorial presentations to shed new light on integration in differential categories.

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Marie Kerjean, Valentin Maestracci, and Morgan Rogers. Functorial Models of Differential Linear Logic. In 10th International Conference on Formal Structures for Computation and Deduction (FSCD 2025). Leibniz International Proceedings in Informatics (LIPIcs), Volume 337, pp. 26:1-26:17, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2025)

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@InProceedings{kerjean_et_al:LIPIcs.FSCD.2025.26,
  author =	{Kerjean, Marie and Maestracci, Valentin and Rogers, Morgan},
  title =	{{Functorial Models of Differential Linear Logic}},
  booktitle =	{10th International Conference on Formal Structures for Computation and Deduction (FSCD 2025)},
  pages =	{26:1--26:17},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-374-4},
  ISSN =	{1868-8969},
  year =	{2025},
  volume =	{337},
  editor =	{Fern\'{a}ndez, Maribel},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.FSCD.2025.26},
  URN =		{urn:nbn:de:0030-drops-236419},
  doi =		{10.4230/LIPIcs.FSCD.2025.26},
  annote =	{Keywords: Categorical semantics, Differential Programming, Linear Logic}
}

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Unifying Boolean and Algebraic Descriptive Complexity

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Functorial Models of Differential Linear Logic

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