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src/HOL/NthRoot.thy
changeset 57155 5c59114ff0cb
parent 56889 48a745e1bde7
child 57275 0ddb5b755cdc 
     1.1 --- a/src/HOL/NthRoot.thy	Mon Jun 02 15:10:18 2014 +0200
     1.2 +++ b/src/HOL/NthRoot.thy	Mon Jun 02 16:19:37 2014 +0200
     1.3 @@ -461,7 +461,7 @@
     1.4    unfolding sqrt_def by (rule continuous_real_root)
     1.5    
     1.6  lemma continuous_on_real_sqrt[continuous_intros]:
     1.7 -  "continuous_on s f \<Longrightarrow> 0 < n \<Longrightarrow> continuous_on s (\<lambda>x. sqrt (f x))"
     1.8 +  "continuous_on s f \<Longrightarrow> continuous_on s (\<lambda>x. sqrt (f x))"
     1.9    unfolding sqrt_def by (rule continuous_on_real_root)
    1.10  
    1.11  lemma DERIV_real_sqrt_generic:
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