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A first order unification algorithm is formalized and proved in this
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directory. The files "ROOT.ML" and "ROOT1.ML" give instructions for
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running the proof. "ROOT1.ML" is will run on the current Isabelle release
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"Isabelle-94 revision 5: January 96"
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while "ROOT.ML" builds on an internal release that Carsten Clasholm was
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maintaining. Features of this internal release will make their way into
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the public release (I hope). Eventually, the definition facility used to
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define the Unify algorithm will be incorporated into the syntax for
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".thy" files.
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