src/HOL/Computational_Algebra/Polynomial.thy
changeset 67091 1393c2340eec
parent 66806 a4e82b58d833
child 67369 7360fe6bb423
     1.1 --- a/src/HOL/Computational_Algebra/Polynomial.thy	Sun Nov 26 13:19:52 2017 +0100
     1.2 +++ b/src/HOL/Computational_Algebra/Polynomial.thy	Sun Nov 26 21:08:32 2017 +0100
     1.3 @@ -1094,7 +1094,7 @@
     1.4  lemma poly_prod: "poly (\<Prod>k\<in>A. p k) x = (\<Prod>k\<in>A. poly (p k) x)"
     1.5    by (induct A rule: infinite_finite_induct) simp_all
     1.6  
     1.7 -lemma degree_prod_sum_le: "finite S \<Longrightarrow> degree (prod f S) \<le> sum (degree o f) S"
     1.8 +lemma degree_prod_sum_le: "finite S \<Longrightarrow> degree (prod f S) \<le> sum (degree \<circ> f) S"
     1.9  proof (induct S rule: finite_induct)
    1.10    case empty
    1.11    then show ?case by simp