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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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  <TITLE>Cube/README</TITLE>
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<H2>Cube: Barendregt's Lambda-Cube</H2>
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This directory contains the theory sources for the Lambda-Cube in
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Isabelle/Pure.<p>
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The <tt>ex</tt> subdirectory contains some examples.<p>
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NB: the formalization is not completely sound!  It does not enforce
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distinctness of variable names in contexts!<P>
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For more information about the Lambda-Cube, see
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<UL>
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<LI>H. Barendregt<BR>
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    Introduction to Generalised Type Systems<BR>
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    J. Functional Programming
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</UL>
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