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System F with Width-subtyping and Record Updating

Poll, Erik (1997) System F with Width-subtyping and Record Updating. In: Theoretical Aspects of Computer Software (TACS'97), Sendai, Japan. Lecture Notes In Computer Science , 1281. pp. 439-457. Springer LNCS ISBN 3-540-63388-X. (KAR id:21451)


It is a well-known problem that F< - the polymorphic lambda calculus F extended with subtyping - does not provide so-called polymorphic updates, and that the standard PER model for F< does not provide interpretations for these operations. The polymorphic updates are interesting because they play an important role in some type-theoretic models of object-oriented languages. We present an extension Fwidth of system F with a restricted form of subtyping - width-subtyping - on record types, that does provide these operations. The main result is that we show it is still possible to give a PER model for this system.

Item Type: Conference or workshop item (Paper)
Uncontrolled keywords: subtyping, polymorphism
Subjects: Q Science > QA Mathematics (inc Computing science) > QA 76 Software, computer programming,
Divisions: Faculties > Sciences > School of Computing > Theoretical Computing Group
Depositing User: Mark Wheadon
Date Deposited: 01 Aug 2009 17:08 UTC
Last Modified: 28 May 2019 14:00 UTC
Resource URI: (The current URI for this page, for reference purposes)
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