2009-02-24 huffman 2009-02-24 make more proofs work whether or not One_nat_def is a simp rule
2009-02-21 nipkow 2009-02-21 Removed subsumed lemmas
2009-01-31 nipkow 2009-01-31 added some simp rules
2009-01-28 haftmann 2009-01-28 Plain, Main form meeting points in import hierarchy
2008-12-03 haftmann 2008-12-03 made repository layout more coherent with logical distribution structure; stripped some $Id$s
2005-07-08 nipkow 2005-07-08 Used to be in Library/Primes