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EPTCS ??, 20??, pp. 1--11, doi:10.4204/EPTCS.??.?? # Andreas Abel
 

Summary: FICS 2010
EPTCS ??, 20??, pp. 1--11, doi:10.4204/EPTCS.??.??
c
# Andreas Abel
This work is licensed under the
Creative Commons Attribution License.
Type­Based Termination, Inflationary Fixed­Points,
and Mixed Inductive­Coinductive Types
Andreas Abel
Department of Computer Science
Ludwig­Maximilians­University Munich, Germany
andreas.abel@ifi.lmu.de
Type systems certify program properties in a compositional way. From a bigger program one can
abstract out a part and certify the properties of the resulting abstract program by just using the type
of the part that was abstracted away. Termination and productivity are non­trivial yet desired pro­
gram properties, and several type systems have been put forward that guarantee termination, com­
positionally. These type systems are intimately connected to the definition of least and greatest
fixed­points by ordinal iteration. While most type systems use ``conventional'' iteration, we consider
inflationary iteration in this article. We demonstrate how this leads to a more principled type system,
with recursion based on well­founded induction. The type system has a prototypical implementa­

  

Source: Abel, Andreas - Theoretische Informatik, Ludwig-Maximilians-Universität München

 

Collections: Computer Technologies and Information Sciences