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<HTML><HEAD><TITLE>LK/ReadMe</TITLE></HEAD><BODY>
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<H2>LK: Classical First-Order Sequent Calculus</H2>
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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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<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 LK 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>Jean Gallier,<BR>
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Logic for Computer Science (Harper&Row, 1986)
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<LI>G. Takeuti,<BR>
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Proof Theory (North Holland, 1987)
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</UL>
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</BODY></HTML>
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