Books and Worksheets

Yarrow Yarrow- A proof-assistant for Pure Type Systems (PTSs), representing different logics and programming languages. A basic knowledge of Pure Type Systems and the Curry-Howard-de Bru… The HOL Theorem Proving System The HOL Theorem Proving System- The system documented originated at the Laboratory for Applied Logic of Brigham Young University and features higher-order, classical, natural dedu… Isabelle Isabelle- Homepage of the theorem prover environment developed by Larry Paulson at Cambridge University and Tobias Kipkow at TU Munich. Af2 Proof Assistant Af2 Proof Assistant- A type system based on second order intuitionistic logic. Kumo Kumo- A web-based proof assistant. It assists with proofs in first order hidden logic, using OBJ3 as a reduction engine. The most important inference rules in first order logic an… Proof General Proof General- Emacs based generic interface for theorem provers. NuPrl Proof Development System NuPrl Proof Development System- A powerful tactic-based proof assistant, developed over the last 15 years at Cornell University. Features include: very expressive logical language… Alfa Alfa- A successor to the proof editor Alf with a graphical user interface, being developed at the Programming Logic Group at Chalmers. Available for download. The LEGO Proof Assistant The LEGO Proof Assistant- A powerful tool for interactive proof development in the natural deduction style. It supports refinement proof as a basic operation. The system design em…