Sun, 17 Jun 2007 13:39:27 +0200 chaieb moved lemma all_not_ex to HOL.thy ; tuned proofs
Sun, 17 Jun 2007 13:39:25 +0200 chaieb Tuned instantiation of Groebner bases to fields
Sun, 17 Jun 2007 13:39:22 +0200 chaieb added Theorem all_not_ex
Sun, 17 Jun 2007 08:56:13 +0200 nipkow renamed vars in zle_trans for compatibility
Sat, 16 Jun 2007 16:27:35 +0200 nipkow tuned
Sat, 16 Jun 2007 15:01:54 +0200 nipkow The simprocs "divide_cancel_factor" and "ring_eq_cancel_factor" no
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