72 Search Results for "Fern�ndez, Maribel"


Document
Ackermann Award
The Ackermann Award 2023

Authors: Maribel Fernández, Jean Goubault-Larrecq, and Delia Kesner

Published in: LIPIcs, Volume 288, 32nd EACSL Annual Conference on Computer Science Logic (CSL 2024)


Abstract
Report on the 2023 Ackermann Award.

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Maribel Fernández, Jean Goubault-Larrecq, and Delia Kesner. The Ackermann Award 2023. In 32nd EACSL Annual Conference on Computer Science Logic (CSL 2024). Leibniz International Proceedings in Informatics (LIPIcs), Volume 288, pp. 1:1-1:4, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2024)


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@InProceedings{fernandez_et_al:LIPIcs.CSL.2024.1,
  author =	{Fern\'{a}ndez, Maribel and Goubault-Larrecq, Jean and Kesner, Delia},
  title =	{{The Ackermann Award 2023}},
  booktitle =	{32nd EACSL Annual Conference on Computer Science Logic (CSL 2024)},
  pages =	{1:1--1:4},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-310-2},
  ISSN =	{1868-8969},
  year =	{2024},
  volume =	{288},
  editor =	{Murano, Aniello and Silva, Alexandra},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.CSL.2024.1},
  URN =		{urn:nbn:de:0030-drops-196446},
  doi =		{10.4230/LIPIcs.CSL.2024.1},
  annote =	{Keywords: lambda-calculus, computational complexity, geometry of interaction, abstract machines, intersection types}
}
Document
Invited Talk
Nominal Techniques for Software Specification and Verification (Invited Talk)

Authors: Maribel Fernández

Published in: LIPIcs, Volume 260, 8th International Conference on Formal Structures for Computation and Deduction (FSCD 2023)


Abstract
In this talk we discuss the nominal approach to the specification of languages with binders and some applications to programming languages and verification.

Cite as

Maribel Fernández. Nominal Techniques for Software Specification and Verification (Invited Talk). In 8th International Conference on Formal Structures for Computation and Deduction (FSCD 2023). Leibniz International Proceedings in Informatics (LIPIcs), Volume 260, pp. 1:1-1:4, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2023)


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@InProceedings{fernandez:LIPIcs.FSCD.2023.1,
  author =	{Fern\'{a}ndez, Maribel},
  title =	{{Nominal Techniques for Software Specification and Verification}},
  booktitle =	{8th International Conference on Formal Structures for Computation and Deduction (FSCD 2023)},
  pages =	{1:1--1:4},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-277-8},
  ISSN =	{1868-8969},
  year =	{2023},
  volume =	{260},
  editor =	{Gaboardi, Marco and van Raamsdonk, Femke},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.FSCD.2023.1},
  URN =		{urn:nbn:de:0030-drops-179855},
  doi =		{10.4230/LIPIcs.FSCD.2023.1},
  annote =	{Keywords: Binding operator, Nominal Logic, Nominal Rewriting, Unification, Equational Theories, Type Systems}
}
Document
A Certified Algorithm for AC-Unification

Authors: Mauricio Ayala-Rincón, Maribel Fernández, Gabriel Ferreira Silva, and Daniele Nantes Sobrinho

Published in: LIPIcs, Volume 228, 7th International Conference on Formal Structures for Computation and Deduction (FSCD 2022)


Abstract
Implementing unification modulo Associativity and Commutativity (AC) axioms is crucial in rewrite-based programming and theorem provers. We modify Stickel’s seminal AC-unification algorithm to avoid mutual recursion and formalise it in the PVS proof assistant. More precisely, we prove the adjusted algorithm’s termination, soundness, and completeness. To do this, we adapted Fages' termination proof, providing a unique elaborated measure that guarantees termination of the modified AC-unification algorithm. This development (to the best of our knowledge) provides the first fully formalised AC-unification algorithm.

Cite as

Mauricio Ayala-Rincón, Maribel Fernández, Gabriel Ferreira Silva, and Daniele Nantes Sobrinho. A Certified Algorithm for AC-Unification. In 7th International Conference on Formal Structures for Computation and Deduction (FSCD 2022). Leibniz International Proceedings in Informatics (LIPIcs), Volume 228, pp. 8:1-8:21, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2022)


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@InProceedings{ayalarincon_et_al:LIPIcs.FSCD.2022.8,
  author =	{Ayala-Rinc\'{o}n, Mauricio and Fern\'{a}ndez, Maribel and Silva, Gabriel Ferreira and Sobrinho, Daniele Nantes},
  title =	{{A Certified Algorithm for AC-Unification}},
  booktitle =	{7th International Conference on Formal Structures for Computation and Deduction (FSCD 2022)},
  pages =	{8:1--8:21},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-233-4},
  ISSN =	{1868-8969},
  year =	{2022},
  volume =	{228},
  editor =	{Felty, Amy P.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.FSCD.2022.8},
  URN =		{urn:nbn:de:0030-drops-162894},
  doi =		{10.4230/LIPIcs.FSCD.2022.8},
  annote =	{Keywords: AC-Unification, PVS, Certified Algorithms, Formal Methods, Interactive Theorem Proving}
}
Document
Complete Volume
LIPIcs, Volume 152, CSL'20, Complete Volume

Authors: Maribel Fernández and Anca Muscholl

Published in: LIPIcs, Volume 152, 28th EACSL Annual Conference on Computer Science Logic (CSL 2020)


Abstract
LIPIcs, Volume 152, CSL'20, Complete Volume

Cite as

28th EACSL Annual Conference on Computer Science Logic (CSL 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 152, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)


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@Proceedings{fernandez_et_al:LIPIcs.CSL.2020,
  title =	{{LIPIcs, Volume 152, CSL'20, Complete Volume}},
  booktitle =	{28th EACSL Annual Conference on Computer Science Logic (CSL 2020)},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-132-0},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{152},
  editor =	{Fern\'{a}ndez, Maribel and Muscholl, Anca},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.CSL.2020},
  URN =		{urn:nbn:de:0030-drops-117841},
  doi =		{10.4230/LIPIcs.CSL.2020},
  annote =	{Keywords: Theory of computation, Logic}
}
Document
Front Matter
Front Matter, Table of Contents, Preface, Conference Organization

Authors: Maribel Fernández and Anca Muscholl

Published in: LIPIcs, Volume 152, 28th EACSL Annual Conference on Computer Science Logic (CSL 2020)


Abstract
Front Matter, Table of Contents, Preface, Conference Organization

Cite as

28th EACSL Annual Conference on Computer Science Logic (CSL 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 152, pp. 0:i-0:xviii, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)


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@InProceedings{fernandez_et_al:LIPIcs.CSL.2020.0,
  author =	{Fern\'{a}ndez, Maribel and Muscholl, Anca},
  title =	{{Front Matter, Table of Contents, Preface, Conference Organization}},
  booktitle =	{28th EACSL Annual Conference on Computer Science Logic (CSL 2020)},
  pages =	{0:i--0:xviii},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-132-0},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{152},
  editor =	{Fern\'{a}ndez, Maribel and Muscholl, Anca},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.CSL.2020.0},
  URN =		{urn:nbn:de:0030-drops-116431},
  doi =		{10.4230/LIPIcs.CSL.2020.0},
  annote =	{Keywords: Front Matter, Table of Contents, Preface, Conference Organization}
}
Document
Invited Talk
Verification of Security Protocols (Invited Talk)

Authors: Véronique Cortier

Published in: LIPIcs, Volume 152, 28th EACSL Annual Conference on Computer Science Logic (CSL 2020)


Abstract
Cryptographic protocols aim at securing communications over insecure networks like the Internet. Over the past decades, numerous decision procedures and tools have been developed to automatically analyse the security of protocols. The field has now reached a good level of maturity with efficient techniques for the automatic security analysis of protocols After an overview of some famous protocols and flaws, we will describe the current techniques for security protocols analysis, often based on logic, and review the key challenges towards a fully automated verification.

Cite as

Véronique Cortier. Verification of Security Protocols (Invited Talk). In 28th EACSL Annual Conference on Computer Science Logic (CSL 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 152, pp. 1:1-1:2, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)


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@InProceedings{cortier:LIPIcs.CSL.2020.1,
  author =	{Cortier, V\'{e}ronique},
  title =	{{Verification of Security Protocols}},
  booktitle =	{28th EACSL Annual Conference on Computer Science Logic (CSL 2020)},
  pages =	{1:1--1:2},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-132-0},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{152},
  editor =	{Fern\'{a}ndez, Maribel and Muscholl, Anca},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.CSL.2020.1},
  URN =		{urn:nbn:de:0030-drops-116447},
  doi =		{10.4230/LIPIcs.CSL.2020.1},
  annote =	{Keywords: Security protocols, automated deduction, security}
}
Document
Invited Talk
Symmetric Computation (Invited Talk)

Authors: Anuj Dawar

Published in: LIPIcs, Volume 152, 28th EACSL Annual Conference on Computer Science Logic (CSL 2020)


Abstract
We discuss a recent convergence of notions of symmetric computation arising in the theory of linear programming, in logic and in circuit complexity. This leads us to a coherent and robust definition of problems that are efficiently and symmetrically solvable. This is at once a rich class of problems and one for which we have methods for proving lower bounds. In this paper, we take a tour through results which show applications of these methods in a number of areas.

Cite as

Anuj Dawar. Symmetric Computation (Invited Talk). In 28th EACSL Annual Conference on Computer Science Logic (CSL 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 152, pp. 2:1-2:12, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)


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@InProceedings{dawar:LIPIcs.CSL.2020.2,
  author =	{Dawar, Anuj},
  title =	{{Symmetric Computation}},
  booktitle =	{28th EACSL Annual Conference on Computer Science Logic (CSL 2020)},
  pages =	{2:1--2:12},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-132-0},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{152},
  editor =	{Fern\'{a}ndez, Maribel and Muscholl, Anca},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.CSL.2020.2},
  URN =		{urn:nbn:de:0030-drops-116455},
  doi =		{10.4230/LIPIcs.CSL.2020.2},
  annote =	{Keywords: Descriptive Complexity, Fixed-point Logic with Counting, Circuit Complexity, Linear Programming, Hardness of Approximation, Arithmetic Circuits}
}
Document
Invited Talk
Solving Word Equations (And Other Unification Problems) by Recompression (Invited Talk)

Authors: Artur Jeż

Published in: LIPIcs, Volume 152, 28th EACSL Annual Conference on Computer Science Logic (CSL 2020)


Abstract
In word equation problem we are given an equation u = v, where both u and v are words of letters and variables, and ask for a substitution of variables by words that equalizes the sides of the equation. This problem was first solved by Makanin and a different solution was proposed by Plandowski only 20 years later, his solution works in PSPACE, which is the best computational complexity bound known for this problem; on the other hand, the only known lower-bound is NP-hardness. In both cases the algorithms (and proofs) employed nontrivial facts on word combinatorics. In the paper I will present an application of a recent technique of recompression, which simplifies the known proofs and (slightly) lowers the complexity to linear nondeterministic space. The technique is based on employing simple compression rules (replacement of two letters ab by a new letter c, replacement of maximal repetitions of a by a new letter), and modifying the equations (replacing a variable X by bX or Xa) so that those operations are sound and complete. In particular, no combinatorial properties of strings are used. The approach turns out to be quite robust and can be applied to various generalizations and related scenarios (context unification, i.e. equations over terms; equations over traces, i.e. partially ordered words; ...).

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Artur Jeż. Solving Word Equations (And Other Unification Problems) by Recompression (Invited Talk). In 28th EACSL Annual Conference on Computer Science Logic (CSL 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 152, pp. 3:1-3:17, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)


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@InProceedings{jez:LIPIcs.CSL.2020.3,
  author =	{Je\.{z}, Artur},
  title =	{{Solving Word Equations (And Other Unification Problems) by Recompression}},
  booktitle =	{28th EACSL Annual Conference on Computer Science Logic (CSL 2020)},
  pages =	{3:1--3:17},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-132-0},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{152},
  editor =	{Fern\'{a}ndez, Maribel and Muscholl, Anca},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.CSL.2020.3},
  URN =		{urn:nbn:de:0030-drops-116468},
  doi =		{10.4230/LIPIcs.CSL.2020.3},
  annote =	{Keywords: word equation, context unification, equations in groups, compression}
}
Document
Invited Talk
Strong Bisimulation for Control Operators (Invited Talk)

Authors: Delia Kesner, Eduardo Bonelli, and Andrés Viso

Published in: LIPIcs, Volume 152, 28th EACSL Annual Conference on Computer Science Logic (CSL 2020)


Abstract
The purpose of this paper is to identify programs with control operators whose reduction semantics are in exact correspondence. This is achieved by introducing a relation ≃, defined over a revised presentation of Parigot’s λμ-calculus we dub ΛM. Our result builds on two fundamental ingredients: (1) factorization of λμ-reduction into multiplicative and exponential steps by means of explicit term operators of ΛM, and (2) translation of ΛM-terms into Laurent’s polarized proof-nets (PPN) such that cut-elimination in PPN simulates our calculus. Our proposed relation ≃ is shown to characterize structural equivalence in PPN. Most notably, ≃ is shown to be a strong bisimulation with respect to reduction in ΛM, i.e. two ≃-equivalent terms have the exact same reduction semantics, a result which fails for Regnier’s σ-equivalence in λ-calculus as well as for Laurent’s σ-equivalence in λμ.

Cite as

Delia Kesner, Eduardo Bonelli, and Andrés Viso. Strong Bisimulation for Control Operators (Invited Talk). In 28th EACSL Annual Conference on Computer Science Logic (CSL 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 152, pp. 4:1-4:23, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)


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@InProceedings{kesner_et_al:LIPIcs.CSL.2020.4,
  author =	{Kesner, Delia and Bonelli, Eduardo and Viso, Andr\'{e}s},
  title =	{{Strong Bisimulation for Control Operators}},
  booktitle =	{28th EACSL Annual Conference on Computer Science Logic (CSL 2020)},
  pages =	{4:1--4:23},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-132-0},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{152},
  editor =	{Fern\'{a}ndez, Maribel and Muscholl, Anca},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.CSL.2020.4},
  URN =		{urn:nbn:de:0030-drops-116473},
  doi =		{10.4230/LIPIcs.CSL.2020.4},
  annote =	{Keywords: Lambda-mu calculus, proof-nets, strong bisimulation}
}
Document
Invited Talk
From Classical Proof Theory to P versus NP: a Guide to Bounded Theories (Invited Talk)

Authors: Iddo Tzameret

Published in: LIPIcs, Volume 152, 28th EACSL Annual Conference on Computer Science Logic (CSL 2020)


Abstract
This talk explores the question of what does logic and specifically proof theory can tell us about the fundamental hardness questions in computational complexity. We start with a brief description of the main concepts behind bounded arithmetic which is a family of weak formal theories of arithmetic that mirror in a precise manner the world of propositional proofs: if a statement of a given form is provable in a given bounded arithmetic theory then the same statement is suitably translated to a family of propositional formulas with short (polynomial-size) proofs in a corresponding propositional proof system. We will proceed to describe the motivations behind the study of bounded arithmetic theories, their corresponding propositional proof systems, and how they relate to the fundamental complexity class separations and circuit lower bounds questions in computational complexity. We provide a collage of results and recent developments showing how bounded arithmetic and propositional proof complexity form a cohesive framework in which both concrete combinatorial questions about complexity as well as meta-mathematical questions about provability of statements of complexity theory itself, are studied. Specific topics we shall mention are: (i) The bounded reverse mathematics program [Stephen Cook and Phuong Nguyen, 2010]: studying the weakest possible axiomatic assumptions that can prove important results in mathematics and computing (cf. [Iddo Tzameret and Stephen A. Cook, 2017; Pavel Hrubeš and Iddo Tzameret, 2015]), and the correspondence between circuit classes and theories. (ii) The meta-mathematics of computational complexity: what kind of reasoning power do we need in order to prove major results in complexity theory itself, and applications to complexity lower bounds (cf. [Razborov, 1995; Rahul Santhanam and Jan Pich, 2019]). (iii) Proof complexity: the systematic treatment of propositional proofs as combinatorial and algebraic objects and their algorithmic applications (cf. [Samuel Buss, 2012; Tonnian Pitassi and Iddo Tzameret, 2016; Noah Fleming et al., 2019]).

Cite as

Iddo Tzameret. From Classical Proof Theory to P versus NP: a Guide to Bounded Theories (Invited Talk). In 28th EACSL Annual Conference on Computer Science Logic (CSL 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 152, pp. 5:1-5:2, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)


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@InProceedings{tzameret:LIPIcs.CSL.2020.5,
  author =	{Tzameret, Iddo},
  title =	{{From Classical Proof Theory to P versus NP: a Guide to Bounded Theories}},
  booktitle =	{28th EACSL Annual Conference on Computer Science Logic (CSL 2020)},
  pages =	{5:1--5:2},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-132-0},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{152},
  editor =	{Fern\'{a}ndez, Maribel and Muscholl, Anca},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.CSL.2020.5},
  URN =		{urn:nbn:de:0030-drops-116482},
  doi =		{10.4230/LIPIcs.CSL.2020.5},
  annote =	{Keywords: Bounded arithmetic, complexity class separations, circuit complexity, proof complexity, weak theories of arithmetic, feasible mathematics}
}
Document
Generalized Connectives for Multiplicative Linear Logic

Authors: Matteo Acclavio and Roberto Maieli

Published in: LIPIcs, Volume 152, 28th EACSL Annual Conference on Computer Science Logic (CSL 2020)


Abstract
In this paper we investigate the notion of generalized connective for multiplicative linear logic. We introduce a notion of orthogonality for partitions of a finite set and we study the family of connectives which can be described by two orthogonal sets of partitions. We prove that there is a special class of connectives that can never be decomposed by means of the multiplicative conjunction ⊗ and disjunction ⅋, providing an infinite family of non-decomposable connectives, called Girard connectives. We show that each Girard connective can be naturally described by a type (a set of partitions equal to its double-orthogonal) and its orthogonal type. In addition, one of these two types is the union of the types associated to a family of MLL-formulas in disjunctive normal form, and these formulas only differ for the cyclic permutations of their atoms.

Cite as

Matteo Acclavio and Roberto Maieli. Generalized Connectives for Multiplicative Linear Logic. In 28th EACSL Annual Conference on Computer Science Logic (CSL 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 152, pp. 6:1-6:16, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)


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@InProceedings{acclavio_et_al:LIPIcs.CSL.2020.6,
  author =	{Acclavio, Matteo and Maieli, Roberto},
  title =	{{Generalized Connectives for Multiplicative Linear Logic}},
  booktitle =	{28th EACSL Annual Conference on Computer Science Logic (CSL 2020)},
  pages =	{6:1--6:16},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-132-0},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{152},
  editor =	{Fern\'{a}ndez, Maribel and Muscholl, Anca},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.CSL.2020.6},
  URN =		{urn:nbn:de:0030-drops-116490},
  doi =		{10.4230/LIPIcs.CSL.2020.6},
  annote =	{Keywords: Linear Logic, Partitions Sets, Proof Nets, Sequent Calculus}
}
Document
On Free Completely Iterative Algebras

Authors: Jiří Adámek

Published in: LIPIcs, Volume 152, 28th EACSL Annual Conference on Computer Science Logic (CSL 2020)


Abstract
For every finitary set functor F we demonstrate that free algebras carry a canonical partial order. In case F is bicontinuous, we prove that the cpo obtained as the conservative completion of the free algebra is the free completely iterative algebra. Moreover, the algebra structure of the latter is the unique continuous extension of the algebra structure of the free algebra. For general finitary functors the free algebra and the free completely iterative algebra are proved to be posets sharing the same conservative completion. And for every recursive equation in the free completely iterative algebra the solution is obtained as the join of an ω-chain of approximate solutions in the free algebra.

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Jiří Adámek. On Free Completely Iterative Algebras. In 28th EACSL Annual Conference on Computer Science Logic (CSL 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 152, pp. 7:1-7:21, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)


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@InProceedings{adamek:LIPIcs.CSL.2020.7,
  author =	{Ad\'{a}mek, Ji\v{r}{\'\i}},
  title =	{{On Free Completely Iterative Algebras}},
  booktitle =	{28th EACSL Annual Conference on Computer Science Logic (CSL 2020)},
  pages =	{7:1--7:21},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-132-0},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{152},
  editor =	{Fern\'{a}ndez, Maribel and Muscholl, Anca},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.CSL.2020.7},
  URN =		{urn:nbn:de:0030-drops-116503},
  doi =		{10.4230/LIPIcs.CSL.2020.7},
  annote =	{Keywords: free algebra, completely iterative algebra, terminal coalgebra, initial algebra, finitary functor}
}
Document
Strongly Unambiguous Büchi Automata Are Polynomially Predictable With Membership Queries

Authors: Dana Angluin, Timos Antonopoulos, and Dana Fisman

Published in: LIPIcs, Volume 152, 28th EACSL Annual Conference on Computer Science Logic (CSL 2020)


Abstract
A Büchi automaton is strongly unambiguous if every word w ∈ Σ^ω has at most one final path. Many properties of strongly unambiguous Büchi automata (SUBAs) are known. They are fully expressive: every regular ω-language can be represented by a SUBA. Equivalence and containment of SUBAs can be decided in polynomial time. SUBAs may be exponentially smaller than deterministic Muller automata and may be exponentially bigger than deterministic Büchi automata. In this work we show that SUBAs can be learned in polynomial time using membership and certain non-proper equivalence queries, which implies that they are polynomially predictable with membership queries. In contrast, under plausible cryptographic assumptions, non-deterministic Büchi automata are not polynomially predictable with membership queries.

Cite as

Dana Angluin, Timos Antonopoulos, and Dana Fisman. Strongly Unambiguous Büchi Automata Are Polynomially Predictable With Membership Queries. In 28th EACSL Annual Conference on Computer Science Logic (CSL 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 152, pp. 8:1-8:17, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)


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@InProceedings{angluin_et_al:LIPIcs.CSL.2020.8,
  author =	{Angluin, Dana and Antonopoulos, Timos and Fisman, Dana},
  title =	{{Strongly Unambiguous B\"{u}chi Automata Are Polynomially Predictable With Membership Queries}},
  booktitle =	{28th EACSL Annual Conference on Computer Science Logic (CSL 2020)},
  pages =	{8:1--8:17},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-132-0},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{152},
  editor =	{Fern\'{a}ndez, Maribel and Muscholl, Anca},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.CSL.2020.8},
  URN =		{urn:nbn:de:0030-drops-116519},
  doi =		{10.4230/LIPIcs.CSL.2020.8},
  annote =	{Keywords: Polynomially predictable languages, Automata learning, Strongly unambiguous B\"{u}chi automata, Automata succinctness, Regular \omega-languages, Grammatical inference}
}
Document
A Robust Class of Linear Recurrence Sequences

Authors: Corentin Barloy, Nathanaël Fijalkow, Nathan Lhote, and Filip Mazowiecki

Published in: LIPIcs, Volume 152, 28th EACSL Annual Conference on Computer Science Logic (CSL 2020)


Abstract
We introduce a subclass of linear recurrence sequences which we call poly-rational sequences because they are denoted by rational expressions closed under sum and product. We show that this class is robust by giving several characterisations: polynomially ambiguous weighted automata, copyless cost-register automata, rational formal series, and linear recurrence sequences whose eigenvalues are roots of rational numbers.

Cite as

Corentin Barloy, Nathanaël Fijalkow, Nathan Lhote, and Filip Mazowiecki. A Robust Class of Linear Recurrence Sequences. In 28th EACSL Annual Conference on Computer Science Logic (CSL 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 152, pp. 9:1-9:16, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)


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@InProceedings{barloy_et_al:LIPIcs.CSL.2020.9,
  author =	{Barloy, Corentin and Fijalkow, Nathana\"{e}l and Lhote, Nathan and Mazowiecki, Filip},
  title =	{{A Robust Class of Linear Recurrence Sequences}},
  booktitle =	{28th EACSL Annual Conference on Computer Science Logic (CSL 2020)},
  pages =	{9:1--9:16},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-132-0},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{152},
  editor =	{Fern\'{a}ndez, Maribel and Muscholl, Anca},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.CSL.2020.9},
  URN =		{urn:nbn:de:0030-drops-116521},
  doi =		{10.4230/LIPIcs.CSL.2020.9},
  annote =	{Keywords: linear recurrence sequences, weighted automata, cost-register automata}
}
Document
Coverage and Vacuity in Network Formation Games

Authors: Gili Bielous and Orna Kupferman

Published in: LIPIcs, Volume 152, 28th EACSL Annual Conference on Computer Science Logic (CSL 2020)


Abstract
The frameworks of coverage and vacuity in formal verification analyze the effect of mutations applied to systems or their specifications. We adopt these notions to network formation games, analyzing the effect of a change in the cost of a resource. We consider two measures to be affected: the cost of the Social Optimum and extremums of costs of Nash Equilibria. Our results offer a formal framework to the effect of mutations in network formation games and include a complexity analysis of related decision problems. They also tighten the relation between algorithmic game theory and formal verification, suggesting refined definitions of coverage and vacuity for the latter.

Cite as

Gili Bielous and Orna Kupferman. Coverage and Vacuity in Network Formation Games. In 28th EACSL Annual Conference on Computer Science Logic (CSL 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 152, pp. 10:1-10:18, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)


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@InProceedings{bielous_et_al:LIPIcs.CSL.2020.10,
  author =	{Bielous, Gili and Kupferman, Orna},
  title =	{{Coverage and Vacuity in Network Formation Games}},
  booktitle =	{28th EACSL Annual Conference on Computer Science Logic (CSL 2020)},
  pages =	{10:1--10:18},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-132-0},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{152},
  editor =	{Fern\'{a}ndez, Maribel and Muscholl, Anca},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.CSL.2020.10},
  URN =		{urn:nbn:de:0030-drops-116532},
  doi =		{10.4230/LIPIcs.CSL.2020.10},
  annote =	{Keywords: Network Formation Games, Vacuity, Coverage}
}
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