From: Wolfgang Bangerth Date: Sat, 1 Aug 2009 17:52:39 +0000 (+0000) Subject: Add something to say that the set of eigenvalues can sometimes be continuous, X-Git-Tag: v8.0.0~7401 X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9ac507bd04f5373bef2663610bfe82005dffec7e;p=dealii.git Add something to say that the set of eigenvalues can sometimes be continuous, not just discrete. git-svn-id: https://svn.dealii.org/trunk@19164 0785d39b-7218-0410-832d-ea1e28bc413d --- diff --git a/deal.II/examples/step-36/doc/intro.dox b/deal.II/examples/step-36/doc/intro.dox index 0ebb822748..944e985c2e 100644 --- a/deal.II/examples/step-36/doc/intro.dox +++ b/deal.II/examples/step-36/doc/intro.dox @@ -28,7 +28,9 @@ also contains differential operators. Under suitable conditions, the above equations have a set of solutions $\Psi_\ell,\varepsilon_\ell$, $\ell\in {\cal I}$, where $\cal I$ can -be a finite or infinite set. In either case, let us note that there is +be a finite or infinite set (and in the latter case it may be a discrete or +sometimes at least in part a continuous set). In either case, let us note that +there is no longer just a single solution, but a set of solutions (the various eigenfunctions and corresponding eigenvalues) that we want to compute. The problem of numerically finding all eigenvalues