author | wenzelm |
Fri, 12 Apr 2019 22:24:07 +0200 | |
changeset 70137 | 824c047db30b |
parent 70136 | f03a01a18c6e |
child 70138 | bd42cc1e10d0 |
--- a/src/HOL/Analysis/Product_Vector.thy Fri Apr 12 22:09:25 2019 +0200 +++ b/src/HOL/Analysis/Product_Vector.thy Fri Apr 12 22:24:07 2019 +0200 @@ -354,6 +354,7 @@ subsubsection\<^marker>\<open>tag unimportant\<close> \<open>Frechet derivatives involving pairs\<close> +text\<^marker>\<open>tag important\<close> \<open>%whitespace\<close> proposition has_derivative_Pair [derivative_intros]: assumes f: "(f has_derivative f') (at x within s)" and g: "(g has_derivative g') (at x within s)"