Added function upto to List.
Had to rearrange loading sequence because now List uses Recdef.
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<h2>Axiomatic type classes</h2>
This directory contains the following axiomatic type class examples:
<DL>
<DT> Tutorial
<DD> Some simple axclass demos that go along with the paper <A
HREF="http://www4.informatik.tu-muenchen.de/~nipkow/isadist/axclass.dvi.gz">
"Using Axiomatic Type Classes in Isabelle --- a tutorial". </A>
<P>
<DT> Group
<DD> Some bits of group theory.
<P>
<DT> Lattice
<DD> Basic theory of lattices and orders.
</DL>
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