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DOI: 10.4230/LIPIcs.CSL.2026.17
A Uniform Cut-Elimination Theorem for Linear Logics with Fixed Points and Super Exponentials

Authors: Alexis Saurin and Esaïe Bauer

Published in: LIPIcs, Volume 363, 34th EACSL Annual Conference on Computer Science Logic (CSL 2026)

Abstract
In the realm of light logics deriving from linear logic, a number of variants of exponential rules have been investigated. The profusion of such proof systems induces the need for cut-elimination theorems for each logic, the proofs of which may be redundant. A number of approaches in proof theory have been adopted to cope with this need. In the present paper, we consider this issue from the point of view of enhancing linear logic with least and greatest fixed-points and considering such a variety of exponential connectives. Our main contribution is to provide a uniform cut-elimination theorem for a parametrized system with fixed-points by combining two approaches: cut-elimination proofs by reduction (or translation) to another system and the identification of sufficient conditions for cut-elimination. More precisely, we examine a broad range of systems, taking inspiration from Nigam and Miller’s subexponentials and from the first author and Laurent’s super exponentials. Our work is motivated, on the one hand, by Baillot’s work on light logics with recursive types and on the other hand by our recent work on the proof theory of the modal μ-calculus.
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Alexis Saurin and Esaïe Bauer. A Uniform Cut-Elimination Theorem for Linear Logics with Fixed Points and Super Exponentials. In 34th EACSL Annual Conference on Computer Science Logic (CSL 2026). Leibniz International Proceedings in Informatics (LIPIcs), Volume 363, pp. 17:1-17:23, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2026)

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@InProceedings{saurin_et_al:LIPIcs.CSL.2026.17,
  author =	{Saurin, Alexis and Bauer, Esa\"{i}e},
  title =	{{A Uniform Cut-Elimination Theorem for Linear Logics with Fixed Points and Super Exponentials}},
  booktitle =	{34th EACSL Annual Conference on Computer Science Logic (CSL 2026)},
  pages =	{17:1--17:23},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-411-6},
  ISSN =	{1868-8969},
  year =	{2026},
  volume =	{363},
  editor =	{Guerrini, Stefano and K\"{o}nig, Barbara},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.CSL.2026.17},
  URN =		{urn:nbn:de:0030-drops-254418},
  doi =		{10.4230/LIPIcs.CSL.2026.17},
  annote =	{Keywords: cut elimination, exponential modalities, fixed-points, linear logic, light logics, mu-calculus, non-wellfounded proofs, proof theory, sequent calculus, subexponentials, super exponentials}
}
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