Categorical models for Abadi and Plotkin's logic for parametricity
Lars Birkedal, Rasmus Ejlers Møgelberg · Mathematical Structures in Computer Science · 2005
We propose a new category-theoretic formulation of relational parametricity based on a logic for reasoning about parametricity given by Abadi and Plotkin. The logic can be used to reason about parametric models, such that we may prove consequences of parametricity that to our knowledge have not been proved before for existing category-theoretic notions of relational parametricity. We provide examples of parametric models and describe a way of constructing parametric models from given models of the second-order lambda calculus.