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LK: Classical First-Order Sequent Calculus
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This directory contains the Standard ML sources of the Isabelle system for
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First-Order Logic as a classical sequent calculus. (For a Natural Deduction
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version, see FOL.) Important files include
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ROOT.ML -- loads all source files. Enter an ML image containing Pure
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Isabelle and type: use "ROOT.ML";
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Makefile -- compiles the files under Poly/ML or SML of New Jersey
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ex -- subdirectory containing examples. To execute them, enter an ML image
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containing LK and type: use "ex/ROOT.ML";
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Useful references on sequent calculi:
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Jean Gallier, Logic for Computer Science (Harper&Row, 1986)
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G. Takeuti, Proof Theory (North Holland, 1987)
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