2009-02-22 nipkow 2009-02-22 added lemmas
2009-02-05 hoelzl 2009-02-05 Added derivation lemmas for power series and theorems for the pi, arcus tangens and logarithm series
2009-01-28 haftmann 2009-01-28 Plain, Main form meeting points in import hierarchy
2009-01-21 haftmann 2009-01-21 no base sort in class import
2008-12-03 haftmann 2008-12-03 made repository layout more coherent with logical distribution structure; stripped some $Id$s