git-svn-id: https://svn.dealii.org/trunk@23134 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/examples/step-38/doc/intro.dox b/deal.II/examples/step-38/doc/intro.dox
index de71fcf5461a1871843e62c76d7fd74b9c4adfc5..4fb138d76b9c6be3b381ebba1b4ff1b0e2fa4c81 100644 (file)
--- a/deal.II/examples/step-38/doc/intro.dox
+++ b/deal.II/examples/step-38/doc/intro.dox
@@ -190,8 +190,8 @@ We produce one test case for a 2d problem and another one for 3d:
 In the program, we will also compute the $H^1$ seminorm error of the
 solution. Since the solution function and its numerical approximation are only
 defined on the manifold, the obvious definition of this error functional is
-$| e |_{H^1} 
-  = | \nabla_\Gamma e |_{L_2} 
+$| e |_{H^1(\Gamma)} 
+  = | \nabla_\Gamma e |_{L_2(\Gamma)} 
   = \left( \int_\Gamma | \left[\mathbf 1 - \mathbf n \otimes \mathbf
 n\right]\nabla (u-u_h) |^2 \right)^{1/2}$. This requires us to provide the
 <i>tangential</i> gradient $\left[\mathbf 1 - \mathbf n \otimes \mathbf