Sequents: Various Sequent Calculi

This directory contains the Standard ML sources of the Isabelle system for various Sequent, Linear, and Modal Logic. Important files include
ROOT.ML
loads all source files. Enter an ML image containing Pure Isabelle and type: use "ROOT.ML";
Makefile
compiles the files under Poly/ML or SML of New Jersey
ex
subdirectory containing examples. Files are arranged in subdirectories. To execute all of them, enter an ML image containing Sequents and type
	use "ex/ROOT.ML";
To execute examples in a particular logic (LK/ILL/Modal) use the appropriate command:
	use "ex/LK/ROOT.ML";
	use "ex/ILL/ROOT.ML";
	use "ex/Modal/ROOT.ML";

Much of the work in Modal logic was done by Martin Coen. Thanks to Rajeev Gore' for supplying the inference system for S43. Sara Kalvala reorganized the files and supplied Linear Logic. Jacob Frost provided some improvements to the syntax of sequents.

Useful references on sequent calculi:

Useful references on Modal Logics: Useful references on Linear Logic: