Petersen, Rasmus LerchedahlBirkedal, LarsNanevski, AleksandarMorrisett, Greg Gregory2010-04-212008Petersen, Rasmus L., Lars Birkedal, Aleksandar Nanevski, and Greg Morrisett. 2008. A realizability model for impredicative Hoare Type Theory. In Programming Languages and Systems, ed. S. Drossopoulou, 337-352. Berlin; New York: Springer. Previously published in Lecture Notes in Computer Science 4960: 337-352.978-3-540-78738-90302-9743http://nrs.harvard.edu/urn-3:HUL.InstRepos:3980869We present a denotational model of impredicative Hoare Type Theory, a very expressive dependent type theory in which one can specify and reason about mutable abstract data types. The model ensures soundness of the extension of Hoare Type Theory with impredicative polymorphism; makes the connections to separation logic clear, and provides a basis for investigation of further sound extensions of the theory, in particular equations between computations and types.en-USMonograph or Book10.1007/978-3-540-78739-6_26