changeset 66453 | cc19f7ca2ed6 |
parent 63040 | eb4ddd18d635 |
child 67399 | eab6ce8368fa |
--- a/src/HOL/Probability/ex/Dining_Cryptographers.thy Fri Aug 18 13:55:05 2017 +0200 +++ b/src/HOL/Probability/ex/Dining_Cryptographers.thy Fri Aug 18 20:47:47 2017 +0200 @@ -1,5 +1,5 @@ theory Dining_Cryptographers -imports "~~/src/HOL/Probability/Information" +imports "HOL-Probability.Information" begin lemma image_ex1_eq: "inj_on f A \<Longrightarrow> (b \<in> f ` A) \<longleftrightarrow> (\<exists>!x \<in> A. b = f x)"