[TYPES/announce] ITRS 21 CfP

[Riccardo Treglia]

ITRS 2021 Call for papersTenth Workshop on Intersection Types and Related
Systems - ITRS 2021

17 July 2021, Online

Affiliated with FSCD <https://fscd2021.dc.uba.ar/>, 17-24 July 2021, Buenos
Aires

Web page: http://www.di.unito.it/~deligu/ITRS2021/
Aims and Scope

Intersection types were introduced near the end of the 1970s to overcome
the limitations of Curry's type assignment system and to provide a
characterization of the strongly normalizing terms of the Lambda Calculus.
The key idea is to introduce an intersection type constructor ∧ such that a
term of type t ∧ s can be used at both type t and s within the same
context. This provides a finite polymorphism where various, even unrelated,
types of the term are listed explicitly, differently from the more widely
used universally quantified types where the polymorphic type is the common
schema that stands for its various type instances. As a consequence, more
terms (all and only the normalizing terms) can be typed than with universal
polymorphism.

Although intersection types were initially intended for use in analyzing
and/or synthesizing lambda models as well as in analyzing normalization
properties, over the last twenty years the scope of the research on
intersection types and related systems has broadened in many directions.
Restricted (and more manageable) forms have been investigated, such as
refinement types. Type systems based on intersection type theory have been
extensively studied for practical purposes, such as program analysis and
higher-order model checking. The dual notion of union types turned out to
be quite useful for programming languages. Finally, the behavioural
approach to types, which can give a static specification of computational
properties, has become central in the most recent research on type theory.

The ITRS 2021 workshop aims to bring together researchers working on both
the theory and practical applications of systems based on intersection
types and related approaches. Possible topics for submitted papers include,
but are not limited to:

   - Formal properties of systems with intersection types.
   - Results for related systems, such as union types, refinement types, or
   singleton types.
   - Applications to lambda calculus, pi-calculus and similar systems.
   - Applications for programming languages, program analysis, and program
   verification.
   - Applications for other areas, such as database query languages and
   program extraction from proofs.
   - Related approaches using behavioural/intensional types and/or
   denotational semantics to characterize computational properties.
   - Quantitative refinements of intersection types.

ITRS workshops have been held every two years (with the exception of 2020,
because of COVID-19 outbreak). Information about the previous events is
available on the ITRS home page <http://itrs.di.unito.it/>.
Invited Speaker

   - Jeremy Siek (Indiana University Bloomington)

Paper Submissions

Papers must be original and not previously published, nor submitted
elsewhere. Papers should be prepared in LaTeX using the EPTCS macro
<http://style.eptcs.org/> package and should be in the range of 3-16 pages,
plus at most 2 pages of references. Submissions will be collected via
EasyChair and reviewed by anonymous referees.
Important Dates

   - Paper submission: 12 April 2021
   - Author notification: 24 May 2021
   - Final version: 18 June 2021
   - Workshop: 17 July 2021

Program Committee

   - Antonio Bucciarelli, Université de Paris, France
   - Daniel De Carvalho, Innopolis University, Russia
   - Andrej Dudenhefner, Saarland University, Germany
   - Silvia Ghilezan, University of Novi Sad, Serbia
   - Giulio Guerrieri, University of Bath, UK
   - Ugo de' Liguoro, Università di Torino, Italy (chair)
   - Jeremy Siek, Indiana University Bloomington, USA (co-chair)

Organizers

Ugo de' Liguoro, Università di Torino, Italy

Riccardo Treglia, Università di Torino, Italy (riccardo.treglia at unito.it)
Steering Committee

   - Mariangiola Dezani-Ciancaglini, Università di Torino, Italy
   - Jakob Rehof, TU University of Dortmund, Germany
   - Joe Wells, Heriot-Watt University, Scotland
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