System F with Width-subtyping and Record Updating

Poll, Erik (1997) System F with Width-subtyping and Record Updating. In: Proceedings of the Third International Symposium on Theoretical Aspects of Computer Software. Lecture Notes In Computer Science, 1281. Springer LNCS pp. 439-457. ISBN 3-540-63388-X . (Full text available)

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Abstract

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 > Science Technology and Medical Studies > School of Computing > Theoretical Computing Group
Depositing User: Mark Wheadon
Date Deposited: 01 Aug 2009 17:08
Last Modified: 06 Sep 2011 03:54
Resource URI: http://kar.kent.ac.uk/id/eprint/21451 (The current URI for this page, for reference purposes)
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