--- a/src/HOL/Analysis/Cartesian_Euclidean_Space.thy Wed Jan 16 05:26:46 2019 +0100
+++ b/src/HOL/Analysis/Cartesian_Euclidean_Space.thy Wed Jan 16 10:27:57 2019 +0100
@@ -801,7 +801,7 @@
qed
-subsection%important \<open>Component of the differential must be zero if it exists at a local
+text%important \<open>Component of the differential must be zero if it exists at a local
maximum or minimum for that corresponding component\<close>
lemma%important differential_zero_maxmin_cart:
--- a/src/HOL/Analysis/Cartesian_Space.thy Wed Jan 16 05:26:46 2019 +0100
+++ b/src/HOL/Analysis/Cartesian_Space.thy Wed Jan 16 10:27:57 2019 +0100
@@ -6,6 +6,8 @@
Author: Fabian Immler, TUM
*)
+section "Linear Algebra on Finite Cartesian Products"
+
theory Cartesian_Space
imports
Finite_Cartesian_Product Linear_Algebra