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Published in:
2015 | OriginalPaper | Chapter
Game Semantics and Normalization by Evaluation
Authors : Pierre Clairambault, Peter Dybjer
Published in: Foundations of Software Science and Computation Structures
Publisher: Springer Berlin Heidelberg
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We show that Hyland and Ong’s game semantics for PCF can be presented using normalization by evaluation (nbe). We use the bijective correspondence between innocent well-bracketed strategies and PCF Böhm trees, and show how operations on PCF Böhm trees, such as composition, can be computed lazily and simply by nbe. The usual equations characteristic of games follow from the nbe construction without reference to low-level game-theoretic machinery. As an illustration, we give a Haskell program computing the application of innocent strategies.