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+<HTML><HEAD><TITLE>CTT/ReadMe</TITLE></HEAD><BODY>
+
+<H2>CTT: Constructive Type Theory</H2>
+
+This directory contains the Standard ML sources of the Isabelle system for
+Constructive Type Theory (extensional equality, no universes). 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
+<DD>subdirectory containing examples. To execute them, enter an ML image
+containing CTT and type: use "ex/ROOT.ML";<P>
+</DL>
+
+Useful references on Constructive Type Theory:
+
+<UL>
+<LI> B. Nordström, K. Petersson and J. M. Smith,<BR>
+ Programming in Martin-Löf's Type Theory<BR>
+ (Oxford University Press, 1990)
+
+<LI> Simon Thompson,<BR>
+ Type Theory and Functional Programming (Addison-Wesley, 1991)
+</UL>
+</BODY></HTML>