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<HTML><HEAD><TITLE>FOL/ReadMe</TITLE></HEAD><BODY>
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<H2>FOL: First-Order Logic with Natural Deduction</H2>
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This directory contains the Standard ML sources of the Isabelle system for
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First-Order Logic (constructive and classical versions). For a classical
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sequent calculus, see LK. Important files include
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<DL>
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<DT>ROOT.ML
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<DD>loads all source files. Enter an ML image containing Pure
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Isabelle and type: use "ROOT.ML";<P>
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<DT>Makefile
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<DD>compiles the files under Poly/ML or SML of New Jersey<P>
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<DT>ex
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<DD>subdirectory containing examples. To execute them, enter an ML image
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containing FOL and type: use "ex/ROOT.ML";<P>
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</DL>
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Useful references on First-Order Logic:
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<UL>
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<LI>Antony Galton, Logic for Information Technology (Wiley, 1990)
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<LI>Michael Dummett, Elements of Intuitionism (Oxford, 1977)
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</UL>
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</BODY></HTML>
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