A universal embedding for the higher order structure of computational effects
Power, J., 2003. A universal embedding for the higher order structure of computational effects. In: Typed Lambda Calculi and Applications 6th International Conference, TLCA 2003 Valencia, Spain, June 10–12, 2003 Proceedings. Vol. 2701. Berlin: Springer, pp. 301-315. (Lecture Notes in Computer Science)
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We give a universal embedding of the semantics for the first order fragment of the computational λ-calculus into a semantics for the whole calculus. In category theoretic terms, which are the terms of the paper, this means we give a universal embedding of every small Freyd-category into a closed Freyd-category. The universal property characterises the embedding as the free completion of the Freyd-category as ca [→, Set]-enriched category under conical colimits. This embedding extends the usual Yoneda embedding of a small category with finite products into its free cocompletion, i.e., the usual category theoretic embedding of a model of the first order fragment of the simply typed λ-calculus into a model for the whole calculus, and similarly for the linear λ-calculus. It agrees with an embedding previously given in an ad hoc way without a universal property, so it shows the definitiveness of that construction.
|Item Type||Book Sections|
|Departments||Faculty of Science > Computer Science|
|Additional Information||Typed lambda calculi and applications (Valencia, 2003)|
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