removed redundant lemma, cf. class zero_neq_one in HOL/Rings.thy;
1.1 --- a/src/HOL/Library/Univ_Poly.thy Tue Oct 09 21:33:12 2012 +0200
1.2 +++ b/src/HOL/Library/Univ_Poly.thy Tue Oct 09 22:24:24 2012 +0200
1.3 @@ -414,7 +414,6 @@
1.4 apply (auto simp add: poly_exp poly_mult)
1.5 done
1.6
1.7 -lemma (in semiring_1) one_neq_zero[simp]: "1 \<noteq> 0" using zero_neq_one by blast
1.8 lemma (in comm_ring_1) poly_prime_eq_zero[simp]: "poly [a,1] \<noteq> poly []"
1.9 apply (simp add: fun_eq)
1.10 apply (rule_tac x = "minus one a" in exI)