Wed, 07 May 2008 10:56:58 +0200 berghofe Replaced forward proofs of existential statements by backward proofs
(0) -10000 -3000 -1000 -300 -100 -30 -10 -1 +1 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip