changeset 49751 | 5248806bc7ab |
parent 46730 | e3b99d0231bc |
child 49962 | a8cc904a6820 |
--- a/src/HOL/Library/Univ_Poly.thy Tue Oct 09 21:33:12 2012 +0200 +++ b/src/HOL/Library/Univ_Poly.thy Tue Oct 09 22:24:24 2012 +0200 @@ -414,7 +414,6 @@ apply (auto simp add: poly_exp poly_mult) done -lemma (in semiring_1) one_neq_zero[simp]: "1 \<noteq> 0" using zero_neq_one by blast lemma (in comm_ring_1) poly_prime_eq_zero[simp]: "poly [a,1] \<noteq> poly []" apply (simp add: fun_eq) apply (rule_tac x = "minus one a" in exI)