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DOI: 10.4230/LIPIcs.CSL.2025.28

Strong Induction Is an Up-To Technique

Authors: Filippo Bonchi, Elena Di Lavore, and Anna Ricci

Published in: LIPIcs, Volume 326, 33rd EACSL Annual Conference on Computer Science Logic (CSL 2025)

Abstract

Up-to techniques are enhancements of the coinduction proof principle which, in lattice theoretic terms, is the dual of induction. What is the dual of coinduction up-to? By means of duality, we illustrate a theory of induction up-to and we observe that an elementary proof technique, commonly known as strong induction, is an instance of induction up-to. We also show that, when generalising our theory from lattices to categories, one obtains an enhancement of the induction definition principle known in the literature as comonadic recursion.

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Filippo Bonchi, Elena Di Lavore, and Anna Ricci. Strong Induction Is an Up-To Technique. In 33rd EACSL Annual Conference on Computer Science Logic (CSL 2025). Leibniz International Proceedings in Informatics (LIPIcs), Volume 326, pp. 28:1-28:21, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2025)

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@InProceedings{bonchi_et_al:LIPIcs.CSL.2025.28,
  author =	{Bonchi, Filippo and Di Lavore, Elena and Ricci, Anna},
  title =	{{Strong Induction Is an Up-To Technique}},
  booktitle =	{33rd EACSL Annual Conference on Computer Science Logic (CSL 2025)},
  pages =	{28:1--28:21},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-362-1},
  ISSN =	{1868-8969},
  year =	{2025},
  volume =	{326},
  editor =	{Endrullis, J\"{o}rg and Schmitz, Sylvain},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.CSL.2025.28},
  URN =		{urn:nbn:de:0030-drops-227856},
  doi =		{10.4230/LIPIcs.CSL.2025.28},
  annote =	{Keywords: Induction, Coinduction, Up-to Techniques, Induction up-to, Lattices, Algebras}
}

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DOI: 10.4230/LIPIcs.CSL.2021.30

Compositional Modelling of Network Games

Authors: Elena Di Lavore, Jules Hedges, and Paweł Sobociński

Published in: LIPIcs, Volume 183, 29th EACSL Annual Conference on Computer Science Logic (CSL 2021)

Abstract

The analysis of games played on graph-like structures is of increasing importance due to the prevalence of social networks, both virtual and physical, in our daily life. As well as being relevant in computer science, mathematical analysis and computer simulations of such distributed games are vital methodologies in economics, politics and epidemiology, amongst other fields. Our contribution is to give compositional semantics of a family of such games as a well-behaved mapping, a strict monoidal functor, from a category of open graphs (syntax) to a category of open games (semantics). As well as introducing the theoretical framework, we identify some applications of compositionality.

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Elena Di Lavore, Jules Hedges, and Paweł Sobociński. Compositional Modelling of Network Games. In 29th EACSL Annual Conference on Computer Science Logic (CSL 2021). Leibniz International Proceedings in Informatics (LIPIcs), Volume 183, pp. 30:1-30:24, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2021)

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@InProceedings{dilavore_et_al:LIPIcs.CSL.2021.30,
  author =	{Di Lavore, Elena and Hedges, Jules and Soboci\'{n}ski, Pawe{\l}},
  title =	{{Compositional Modelling of Network Games}},
  booktitle =	{29th EACSL Annual Conference on Computer Science Logic (CSL 2021)},
  pages =	{30:1--30:24},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-175-7},
  ISSN =	{1868-8969},
  year =	{2021},
  volume =	{183},
  editor =	{Baier, Christel and Goubault-Larrecq, Jean},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.CSL.2021.30},
  URN =		{urn:nbn:de:0030-drops-134645},
  doi =		{10.4230/LIPIcs.CSL.2021.30},
  annote =	{Keywords: game theory, category theory, network games, open games, open graphs, compositionality}
}

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Documents authored by Di Lavore, Elena

Strong Induction Is an Up-To Technique

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Compositional Modelling of Network Games

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