re-organization of theorems from Alloc and PPROD, partly into new theory
Lift_prog
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<H1>Lambda Calculus in de Bruijn's Notation</H1>
This theory defines lambda-calculus terms with de Bruijn indixes and proves
confluence of beta, eta and beta+eta.
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The paper
<A HREF="http://www4.informatik.tu-muenchen.de/~nipkow/pubs/ic.html">
More Church-Rosser Proofs (in Isabelle/HOL)</A>
describes the whole theory.
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<P>Last modified 5/11/96
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