From cbd7a42fd9b8adcdbc59590252bb71433f27868a Mon Sep 17 00:00:00 2001 From: bangerth Date: Mon, 22 Sep 2008 01:42:45 +0000 Subject: [PATCH] Augment. git-svn-id: https://svn.dealii.org/trunk@16888 0785d39b-7218-0410-832d-ea1e28bc413d --- deal.II/doc/doxygen/headers/glossary.h | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/deal.II/doc/doxygen/headers/glossary.h b/deal.II/doc/doxygen/headers/glossary.h index b412c97b03..275ddf223a 100644 --- a/deal.II/doc/doxygen/headers/glossary.h +++ b/deal.II/doc/doxygen/headers/glossary.h @@ -42,7 +42,14 @@ * directional derivatives. Since the shape functions are linear * combinations of those, they constitute only a single block. The * primal function u would be in the second block, but in the - * dim+1st component. + * dim+1st component. + * + * In most cases, when you subdivide a matrix or vector into blocks, you do so + * by creating one block for each vector component. However, this is not + * always so, and the DoFRenumbering::component_wise function allows to group + * several vector components into the same block (see, for example, the @ref + * step_22 "step-22" or @ref step_31 "step-31" tutorial programs, as opposed + * to @ref step_20 "step-20"). * *
@anchor GlossComponent component
* -- 2.39.5