]> https://gitweb.dealii.org/ - dealii-svn.git/commitdiff
Doc update.
authorwolf <wolf@0785d39b-7218-0410-832d-ea1e28bc413d>
Fri, 11 Dec 1998 17:19:06 +0000 (17:19 +0000)
committerwolf <wolf@0785d39b-7218-0410-832d-ea1e28bc413d>
Fri, 11 Dec 1998 17:19:06 +0000 (17:19 +0000)
git-svn-id: https://svn.dealii.org/trunk@703 0785d39b-7218-0410-832d-ea1e28bc413d

deal.II/deal.II/include/fe/fe.h

index 144d29b2ec78ccd098a28a003df59ee7a696671e..79726a139d6e250051d9af613d50ac8d5ccbcf41 100644 (file)
@@ -365,7 +365,27 @@ struct FiniteElementBase :
                                      * information; when using discontinuous
                                      * elements, this assumption is violated.
                                      *
-                                     * SOLUTION? NOT YET MADE UP!
+                                     * One way to get the whole thing working
+                                     * nonetheless would be to use a flag which
+                                     * tells us when the 'write' and when to
+                                     * 'add'. Adding is possible when we have
+                                     * only interior degrees of freedom, i.e.
+                                     * dofs that are not shared between cells.
+                                     * This is certainly the way to go for the
+                                     * DG(r) elements. However, this scheme
+                                     * does not work for discontinuous elements
+                                     * with degrees of freedom on the faces,
+                                     * such as the rotated bilinear
+                                     * (Rannacher-Turek) element or elements
+                                     * like the Crouzeix-Raviart one. The latter
+                                     * have degrees of freedom on the faces,
+                                     * e.g. mean values on a face, and these
+                                     * values are the same from both sides of
+                                     * the face, but the solutions are
+                                     * discontinuous there nevertheless, such
+                                     * that interpolation is not possible here.
+                                     *
+                                     * FINAL SOLUTION? NOT YET MADE UP!
                                      *
                                      * To compute the interpolation of a
                                      * finite element field to a cell, you

In the beginning the Universe was created. This has made a lot of people very angry and has been widely regarded as a bad move.

Douglas Adams


Typeset in Trocchi and Trocchi Bold Sans Serif.