John Curry

This book ?nds new things to do with an old idea. The proofs-as-programs paradigm constitutes a set of approaches to developing programs from proofs in constructive logic. It has been over thirty years since the paradigm was ?rst conceived. At that time, there was a belief that proofs-as-programs had the - tential for practical application to semi-automated software development. I- tial applications were mostly concerned with ?ne-grain, mathematical program synthesis. For various reasons, research interest in the area eventually tended toward more theoretic issues of constructive logic and type theory. However, in recent years, the situation has become more balanced, and there is increasingly active research in applying constructive techniques to industrial-scale, complex software engineering problems. Thismonographdetailsseveralimportantadvancesinthisdirectionofpr- tical proofs-as-programs. One of the central themes of the book is a general, abstract framework for developing new systems of program synthesis by adapting proofs-as-programs to new contexts.

"H₂O" is the 11th studio album by American pop music duo Hall & Oates. The album was released on October 4, 1982, by RCA Records. It featured three Top 10 US singles, one being "Maneater", which was the biggest hit of their career, spending four weeks at #1 on the Billboard Hot 100 chart. The album title is a play on the chemical formula for water, where "H" is for Hall and "O" is for Oates. "H₂O" is certified double Platinum by the RIAA with sales of over two million copies.

Whether knight's charger or beast of burden, horses played a vital role in medieval life. The wealth of medieval finds excavated in London in recent years has, not surprisingly, included many objects associated with horses.