changeset 67443 | 3abf6a722518 |
parent 67091 | 1393c2340eec |
child 68687 | 2976a4a3b126 |
--- a/src/HOL/Algebra/Bij.thy Tue Jan 16 09:12:16 2018 +0100 +++ b/src/HOL/Algebra/Bij.thy Tue Jan 16 09:30:00 2018 +0100 @@ -10,7 +10,7 @@ definition Bij :: "'a set \<Rightarrow> ('a \<Rightarrow> 'a) set" - \<comment>\<open>Only extensional functions, since otherwise we get too many.\<close> + \<comment> \<open>Only extensional functions, since otherwise we get too many.\<close> where "Bij S = extensional S \<inter> {f. bij_betw f S S}" definition