Put in minimal simpset to avoid excessive simplification,
just as in revision 1.9 of HOL/indrule.ML
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<H2>Cube: Barendregt's Lambda-Cube</H2>
This directory contains the Standard ML sources of the Isabelle system for
the Lambda-Cube. Important files include
<DL>
<DT>ROOT.ML
<DD>loads all source files. Enter an ML image containing Pure
Isabelle and type: use "ROOT.ML";<P>
<DT>Makefile
<DD>compiles the files under Poly/ML or SML of New Jersey<P>
<DT>ex
examples file. To execute them, enter an ML image
containing Cube and type: use "ex.ML";
</DL>
NB: the formalization is not completely sound! It does not enforce
distinctness of variable names in contexts!<P>
For more information about the Lambda-Cube, see
<UL>
<LI>H. Barendregt<BR>
Introduction to Generalised Type Systems<BR>
J. Functional Programming
</UL>
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