The project focuses on implementing computational mathematics and on providing logic-based tools that help automate programming. Prl Project / nuprl@cs.cornell.edu To learn what the PRL project is about, you can read the Introduction and the first chapters of the Nuprl book. These introductions include many links to other material located at the web site. The Mathematics Libraries gives access ...

Home Logics Documentation Download Isabelle What is Isabelle Isabelle is a popular generic theorem proving environment developed at Cambridge University (Larry Paulson) and TU Munich (Tobias Nipkow). These pages provide general information on Isabelle, more specific information is available from the local pages Isabelle at Cambridge Isabelle at Munich See there for information on projects done ...

Next: What is LEGO The LEGO Proof Assistant Not in any way associated with the LEGO Group of Companies, nor created or endorsed by the LEGO Group. What is LEGO LEGO projects LEGO system and documentation by release -- including the LEGO Library. Current Release Version 1.3.1 (November 1998) Previous Release Version 1.3 (June 1998) Old Release Version 1.2 (1995) Literature Example proof ...

Alfa is a successor of the proof editor ALF, i.e., an editor for direct manipulation of proof objects in a logical framework based on Per Martin-L f's Type Theory. It allows you to, interactively and incrementally, define theories (axioms and inference rules), formulate theorems and construct proofs of the theorems. All steps in the proof construction are immediately checked by the system and no ...

The PhoX Proof Assistant Current version is 0.82.020804. PhoX is a proof assistant based on High Order logic and it is eXtensible. One of the principle of this proof assistant is to be as user friendly as possible and so to need a minimal learning time. The current version is still expirimental but starts to be really usable. It is a good idea to try it and make comments to improve the final ...

Lambda - two simple interpreters for the Lambda Calculus one strict, one lazy, with example programs.

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Logic and Philosophy of Logic Dual Identity Combinators(1) Katalin Bimb Indiana University kbimbo@phil.indiana.edu ABSTRACT: This paper offers an analysis of the effect of the identity combinators in dual systems. The result is based on an easy technical trick, namely, that the identity combinators collapse all the combinators which are dual with respect to them. (Dual combinators were ...