From: bangerth Date: Mon, 2 Apr 2012 13:27:41 +0000 (+0000) Subject: Add a link to the wikipedia article. X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=34ed83b4dcd4c4f1f68f2c67026fe04111826283;p=dealii-svn.git Add a link to the wikipedia article. git-svn-id: https://svn.dealii.org/trunk@25359 0785d39b-7218-0410-832d-ea1e28bc413d --- diff --git a/deal.II/examples/step-41/doc/intro.dox b/deal.II/examples/step-41/doc/intro.dox index 89ac53c301..42dec00a16 100644 --- a/deal.II/examples/step-41/doc/intro.dox +++ b/deal.II/examples/step-41/doc/intro.dox @@ -19,7 +19,8 @@ reaching its equilibrium position if gravity was the only existing force? In the current example program, we will consider that under the membrane is a stair step obstacle against which gravity pushes the membrane. -This problem is typically called the "obstacle problem", and it results in a +This problem is typically called the "obstacle problem" (see also this wikipedia article), and it results in a variational inequality, rather than a variational equation when put into the weak form. We will below derive it from the classical formulation, but before we go on to discuss the mathematics let us show how the solution of the problem we