Models for polymorphism over physical dimensions

Atkey, Robert and Ghani, Neil and Nordvall Forsberg, Fredrik and Revell, Timothy and Staton, Sam (2015) Models for polymorphism over physical dimensions. In: 13th International Conference on Typed Lambda Calculi and Applications (TLCA'15). Leibniz International Proceedings in Informatics (LIPIcs) . Schloss Dagstuhl- Leibniz-Zentrum fur Informatik GmbH, Dagstuhl Publishing, Wadern, Germany, pp. 999-1013.

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    Abstract

    We provide a categorical framework for models of a type theory that has special types for physical quantities. The types are indexed by the physical dimensions that they involve. Fibrations are used to organize this index structure in the models of the type theory. We develop some informative models of this type theory: firstly, a model based on group actions, which captures invariance under scaling, and secondly, a way of constructing new models using relational parametricity.