From: Wolfgang Bangerth Date: Tue, 3 Apr 2007 19:54:02 +0000 (+0000) Subject: Fix typos. X-Git-Tag: v8.0.0~10392 X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=68c98c4e6fe93425e8aa507aa69f75a90aae92a1;p=dealii.git Fix typos. git-svn-id: https://svn.dealii.org/trunk@14615 0785d39b-7218-0410-832d-ea1e28bc413d --- diff --git a/deal.II/examples/step-23/doc/intro.dox b/deal.II/examples/step-23/doc/intro.dox index f55b08186b..6a2cac6a3a 100644 --- a/deal.II/examples/step-23/doc/intro.dox +++ b/deal.II/examples/step-23/doc/intro.dox @@ -331,7 +331,7 @@ and integrating by parts where necessary, we find that \left[\frac 12 \int_\Omega \left(\frac{\partial u}{\partial t}\right)^2 + (\nabla u)^2 \; dx\right] = - \int_\Omega f \; dx + \int_\Omega f \frac{\partial u}{\partial t} \; dx + \int_{\partial\Omega} n\cdot\nabla u \frac{\partial g}{\partial t} \; dx. @@ -383,8 +383,8 @@ to as the CFL condition. Intuitively, the CFL condition says that the time step must not be larger than the time it takes a wave to cross a single cell. -In the program, we will refine a square -$[-1,1]$ seven times uniformly, giving a mesh size of $h=\frac 1{64}$, which +In the program, we will refine the square +$[-1,1]^2$ seven times uniformly, giving a mesh size of $h=\frac 1{64}$, which is what we set the time step to. The fact that we set the time step and mesh size individually in two different places is error prone: it is too easy to refine the mesh once more but forget to also adjust the time step. @ref