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Documents authored by Ronchi Della Rocca, Simona

Document
DOI: 10.4230/LIPIcs.FSCD.2023.29
A Quantitative Version of Simple Types

Authors: Daniele Pautasso and Simona Ronchi Della Rocca

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

Abstract
This work introduces a quantitative version of the simple type assignment system, starting from a suitable restriction of non-idempotent intersection types. The resulting system is decidable and has the same typability power as the simple type system; thus, assigning types to terms supplies the very same qualitative information given by simple types, but at the same time can provide some interesting quantitative information. It is well known that typability for simple types is equivalent to unification; we prove a similar result for the newly introduced system. More precisely, we show that typability is equivalent to a unification problem which is a non-trivial extension of the classical one: in addition to unification rules, our typing algorithm makes use of an expansion operation that increases the cardinality of multisets whenever needed.
Cite as

Daniele Pautasso and Simona Ronchi Della Rocca. A Quantitative Version of Simple Types. In 8th International Conference on Formal Structures for Computation and Deduction (FSCD 2023). Leibniz International Proceedings in Informatics (LIPIcs), Volume 260, pp. 29:1-29:21, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2023)

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@InProceedings{pautasso_et_al:LIPIcs.FSCD.2023.29,
  author =	{Pautasso, Daniele and Ronchi Della Rocca, Simona},
  title =	{{A Quantitative Version of Simple Types}},
  booktitle =	{8th International Conference on Formal Structures for Computation and Deduction (FSCD 2023)},
  pages =	{29:1--29:21},
  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.dagstuhl.de/entities/document/10.4230/LIPIcs.FSCD.2023.29},
  URN =		{urn:nbn:de:0030-drops-180137},
  doi =		{10.4230/LIPIcs.FSCD.2023.29},
  annote =	{Keywords: \lambda-calculus, intersection types, unification}
}
Document
DOI: 10.4230/LIPIcs.FSCD.2021.7
Call-By-Value, Again!

Authors: Axel Kerinec, Giulio Manzonetto, and Simona Ronchi Della Rocca

Published in: LIPIcs, Volume 195, 6th International Conference on Formal Structures for Computation and Deduction (FSCD 2021)

Abstract
The quest for a fully abstract model of the call-by-value λ-calculus remains crucial in programming language theory, and constitutes an ongoing line of research. While a model enjoying this property has not been found yet, this interesting problem acts as a powerful motivation for investigating classes of models, studying the associated theories and capturing operational properties semantically. We study a relational model presented as a relevant intersection type system, where intersection is in general non-idempotent, except for an idempotent element that is injected in the system. This model is adequate, equates many λ-terms that are indeed equivalent in the maximal observational theory, and satisfies an Approximation Theorem w.r.t. a system of approximants representing finite pieces of call-by-value Böhm trees. We show that these tools can be used for characterizing the most significant properties of the calculus - namely valuability, potential valuability and solvability - both semantically, through the notion of approximants, and logically, by means of the type assignment system. We mainly focus on the characterizations of solvability, as they constitute an original result. Finally, we prove the decidability of the inhabitation problem for our type system by exhibiting a non-deterministic algorithm, which is proven sound, correct and terminating.
Cite as

Axel Kerinec, Giulio Manzonetto, and Simona Ronchi Della Rocca. Call-By-Value, Again!. In 6th International Conference on Formal Structures for Computation and Deduction (FSCD 2021). Leibniz International Proceedings in Informatics (LIPIcs), Volume 195, pp. 7:1-7:18, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2021)

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@InProceedings{kerinec_et_al:LIPIcs.FSCD.2021.7,
  author =	{Kerinec, Axel and Manzonetto, Giulio and Ronchi Della Rocca, Simona},
  title =	{{Call-By-Value, Again!}},
  booktitle =	{6th International Conference on Formal Structures for Computation and Deduction (FSCD 2021)},
  pages =	{7:1--7:18},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-191-7},
  ISSN =	{1868-8969},
  year =	{2021},
  volume =	{195},
  editor =	{Kobayashi, Naoki},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.FSCD.2021.7},
  URN =		{urn:nbn:de:0030-drops-142458},
  doi =		{10.4230/LIPIcs.FSCD.2021.7},
  annote =	{Keywords: \lambda-calculus, call-by-value, intersection types, solvability, inhabitation}
}
Document
Invited Talk
DOI: 10.4230/LIPIcs.FSCD.2020.1
Solvability in a Probabilistic Setting (Invited Talk)

Authors: Simona Ronchi Della Rocca, Ugo Dal Lago, and Claudia Faggian

Published in: LIPIcs, Volume 167, 5th International Conference on Formal Structures for Computation and Deduction (FSCD 2020)

Abstract
The notion of solvability, crucial in the λ-calculus, is conservatively extended to a probabilistic setting, and a complete characterization of it is given. The employed technical tool is a type assignment system, based on non-idempotent intersection types, whose typable terms turn out to be precisely the terms which are solvable with nonnull probability. We also supply an operational characterization of solvable terms, through the notion of head normal form, and a denotational model of Λ_⊕, itself induced by the type system, which equates all the unsolvable terms.
Cite as

Simona Ronchi Della Rocca, Ugo Dal Lago, and Claudia Faggian. Solvability in a Probabilistic Setting (Invited Talk). In 5th International Conference on Formal Structures for Computation and Deduction (FSCD 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 167, pp. 1:1-1:17, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)

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@InProceedings{ronchidellarocca_et_al:LIPIcs.FSCD.2020.1,
  author =	{Ronchi Della Rocca, Simona and Dal Lago, Ugo and Faggian, Claudia},
  title =	{{Solvability in a Probabilistic Setting}},
  booktitle =	{5th International Conference on Formal Structures for Computation and Deduction (FSCD 2020)},
  pages =	{1:1--1:17},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-155-9},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{167},
  editor =	{Ariola, Zena M.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.FSCD.2020.1},
  URN =		{urn:nbn:de:0030-drops-123237},
  doi =		{10.4230/LIPIcs.FSCD.2020.1},
  annote =	{Keywords: Probabilistic Computation, Lambda Calculus, Solvability, Intersection Types}
}
Document
Invited Paper
DOI: 10.4230/LIPIcs.TYPES.2016.2
Intersection Types and Denotational Semantics: An Extended Abstract (Invited Paper)

Authors: Simona Ronchi Della Rocca

Published in: LIPIcs, Volume 97, 22nd International Conference on Types for Proofs and Programs (TYPES 2016)

Abstract
This is a short survey of the use of intersection types for reasoning in a finitary way about terms interpretations in various models of lambda-calculus.
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Simona Ronchi Della Rocca. Intersection Types and Denotational Semantics: An Extended Abstract (Invited Paper). In 22nd International Conference on Types for Proofs and Programs (TYPES 2016). Leibniz International Proceedings in Informatics (LIPIcs), Volume 97, pp. 2:1-2:7, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2018)

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@InProceedings{ronchidellarocca:LIPIcs.TYPES.2016.2,
  author =	{Ronchi Della Rocca, Simona},
  title =	{{Intersection Types and Denotational Semantics: An Extended Abstract}},
  booktitle =	{22nd International Conference on Types for Proofs and Programs (TYPES 2016)},
  pages =	{2:1--2:7},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-065-1},
  ISSN =	{1868-8969},
  year =	{2018},
  volume =	{97},
  editor =	{Ghilezan, Silvia and Geuvers, Herman and Ivetic, Jelena},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.TYPES.2016.2},
  URN =		{urn:nbn:de:0030-drops-98614},
  doi =		{10.4230/LIPIcs.TYPES.2016.2},
  annote =	{Keywords: Lambda-calculus, Lambda-models, Intersection types}
}
Document
DOI: 10.4230/LIPIcs.CSL.2015.xv
The Ackermann Award 2015

Authors: Anuj Dawar, Dexter Kozen, and Simona Ronchi Della Rocca

Published in: LIPIcs, Volume 41, 24th EACSL Annual Conference on Computer Science Logic (CSL 2015)

Abstract
The eleventh Ackermann Award is presented at CSL'15 in Berlin, Germany. This year, again, the EACSL Ackermann Award is generously sponsored by the Kurt Gödel Society. Besides providing financial support for the Ackermann Award, the Kurt Gödel Society has also committed to inviting the recipients of the Award for a special lecture to be given to the Society in Vienna.
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Anuj Dawar, Dexter Kozen, and Simona Ronchi Della Rocca. The Ackermann Award 2015. In 24th EACSL Annual Conference on Computer Science Logic (CSL 2015). Leibniz International Proceedings in Informatics (LIPIcs), Volume 41, pp. 15-18, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2015)

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@InProceedings{dawar_et_al:LIPIcs.CSL.2015.xv,
  author =	{Dawar, Anuj and Kozen, Dexter and Ronchi Della Rocca, Simona},
  title =	{{The Ackermann Award 2015}},
  booktitle =	{24th EACSL Annual Conference on Computer Science Logic (CSL 2015)},
  pages =	{15--18},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-939897-90-3},
  ISSN =	{1868-8969},
  year =	{2015},
  volume =	{41},
  editor =	{Kreutzer, Stephan},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.CSL.2015.xv},
  URN =		{urn:nbn:de:0030-drops-54470},
  doi =		{10.4230/LIPIcs.CSL.2015.xv},
  annote =	{Keywords: Ackermann Award}
}
Document
DOI: 10.4230/LIPIcs.TLCA.2015.123
Observability for Pair Pattern Calculi

Authors: Antonio Bucciarelli, Delia Kesner, and Simona Ronchi Della Rocca

Published in: LIPIcs, Volume 38, 13th International Conference on Typed Lambda Calculi and Applications (TLCA 2015)

Abstract
Inspired by the notion of solvability in the λ-calculus, we define a notion of observability for a calculus with pattern matching. We give an intersection type system for such a calculus which is based on non-idempotent types. The typing system is shown to characterize the set of terms having canonical form, which properly contains the set of observable terms, so that typability alone is not sufficient to characterize observability. However, the inhabitation problem associated with our typing system turns out to be decidable, a result which — together with typability — allows to obtain a full characterization of observability.
Cite as

Antonio Bucciarelli, Delia Kesner, and Simona Ronchi Della Rocca. Observability for Pair Pattern Calculi. In 13th International Conference on Typed Lambda Calculi and Applications (TLCA 2015). Leibniz International Proceedings in Informatics (LIPIcs), Volume 38, pp. 123-137, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2015)

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@InProceedings{bucciarelli_et_al:LIPIcs.TLCA.2015.123,
  author =	{Bucciarelli, Antonio and Kesner, Delia and Ronchi Della Rocca, Simona},
  title =	{{Observability for Pair Pattern Calculi}},
  booktitle =	{13th International Conference on Typed Lambda Calculi and Applications (TLCA 2015)},
  pages =	{123--137},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-939897-87-3},
  ISSN =	{1868-8969},
  year =	{2015},
  volume =	{38},
  editor =	{Altenkirch, Thorsten},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.TLCA.2015.123},
  URN =		{urn:nbn:de:0030-drops-51596},
  doi =		{10.4230/LIPIcs.TLCA.2015.123},
  annote =	{Keywords: solvability, pattern calculi, intersection types, inhabitation}
}
Document
DOI: 10.4230/LIPIcs.TLCA.2015.211
Standardization of a Call-By-Value Lambda-Calculus

Authors: Giulio Guerrieri, Luca Paolini, and Simona Ronchi Della Rocca

Published in: LIPIcs, Volume 38, 13th International Conference on Typed Lambda Calculi and Applications (TLCA 2015)

Abstract
We study an extension of Plotkin's call-by-value lambda-calculus by means of two commutation rules (sigma-reductions). Recently, it has been proved that this extended calculus provides elegant characterizations of many semantic properties, as for example solvability. We prove a standardization theorem for this calculus by generalizing Takahashi's approach of parallel reductions. The standardization property allows us to prove that our calculus is conservative with respect to the Plotkin's one. In particular, we show that the notion of solvability for this calculus coincides with that for Plotkin's call-by-value lambda-calculus.
Cite as

Giulio Guerrieri, Luca Paolini, and Simona Ronchi Della Rocca. Standardization of a Call-By-Value Lambda-Calculus. In 13th International Conference on Typed Lambda Calculi and Applications (TLCA 2015). Leibniz International Proceedings in Informatics (LIPIcs), Volume 38, pp. 211-225, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2015)

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@InProceedings{guerrieri_et_al:LIPIcs.TLCA.2015.211,
  author =	{Guerrieri, Giulio and Paolini, Luca and Ronchi Della Rocca, Simona},
  title =	{{Standardization of a Call-By-Value Lambda-Calculus}},
  booktitle =	{13th International Conference on Typed Lambda Calculi and Applications (TLCA 2015)},
  pages =	{211--225},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-939897-87-3},
  ISSN =	{1868-8969},
  year =	{2015},
  volume =	{38},
  editor =	{Altenkirch, Thorsten},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.TLCA.2015.211},
  URN =		{urn:nbn:de:0030-drops-51655},
  doi =		{10.4230/LIPIcs.TLCA.2015.211},
  annote =	{Keywords: standardization,sequentialization,lambda-calculus,sigma-reduction,par- allel reduction, call-by-value, head reduction, internal reduction, solvability}
}
Document
Complete Volume
DOI: 10.4230/LIPIcs.CSL.2013
LIPIcs, Volume 23, CSL'13, Complete Volume

Authors: Simona Ronchi Della Rocca

Published in: LIPIcs, Volume 23, Computer Science Logic 2013 (CSL 2013)

Abstract
LIPIcs, Volume 23, CSL'13, Complete Volume
Cite as

Computer Science Logic 2013 (CSL 2013). Leibniz International Proceedings in Informatics (LIPIcs), Volume 23, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2013)

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@Proceedings{ronchidellarocca:LIPIcs.CSL.2013,
  title =	{{LIPIcs, Volume 23, CSL'13, Complete Volume}},
  booktitle =	{Computer Science Logic 2013 (CSL 2013)},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-939897-60-6},
  ISSN =	{1868-8969},
  year =	{2013},
  volume =	{23},
  editor =	{Ronchi Della Rocca, Simona},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.CSL.2013},
  URN =		{urn:nbn:de:0030-drops-42618},
  doi =		{10.4230/LIPIcs.CSL.2013},
  annote =	{Keywords: Conference Proceedings, Theory of Computation, Distributed Systems, Software/ Programs Verifications, Formal Definitions and Theory Languages Constructs and Features, Knowledge Representations Formalisms and Methods}
}
Document
Front Matter
DOI: 10.4230/LIPIcs.CSL.2013.i
Frontmatter, Table of Contents, Preface, Conference Organization

Authors: Simona Ronchi Della Rocca

Published in: LIPIcs, Volume 23, Computer Science Logic 2013 (CSL 2013)

Abstract
Frontmatter, Table of Contents, Preface, Conference Organization
Cite as

Computer Science Logic 2013 (CSL 2013). Leibniz International Proceedings in Informatics (LIPIcs), Volume 23, pp. i-xiv, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2013)

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@InProceedings{ronchidellarocca:LIPIcs.CSL.2013.i,
  author =	{Ronchi Della Rocca, Simona},
  title =	{{Frontmatter, Table of Contents, Preface, Conference Organization}},
  booktitle =	{Computer Science Logic 2013 (CSL 2013)},
  pages =	{i--xiv},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-939897-60-6},
  ISSN =	{1868-8969},
  year =	{2013},
  volume =	{23},
  editor =	{Ronchi Della Rocca, Simona},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.CSL.2013.i},
  URN =		{urn:nbn:de:0030-drops-41821},
  doi =		{10.4230/LIPIcs.CSL.2013.i},
  annote =	{Keywords: Frontmatter, Table of Contents, Preface, Conference Organization}
}
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