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<H2>CTT: Constructive Type Theory</H2>
This is a version of Constructive Type Theory (extensional equality, no universes).<p>
Useful references on Constructive Type Theory:
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<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)
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