From 1a842c0dc441cca1bd66a516b16d7fe6a4c0ba26 Mon Sep 17 00:00:00 2001 From: Ilya Popov Date: Wed, 28 Oct 2015 09:52:55 +0000 Subject: Fix typo in TutorialSparse: laplace equation contains gradient symbol (\nabla) instead of laplacian (\Delta). --- doc/TutorialSparse.dox | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'doc/TutorialSparse.dox') diff --git a/doc/TutorialSparse.dox b/doc/TutorialSparse.dox index 835c59354..fb07adaa2 100644 --- a/doc/TutorialSparse.dox +++ b/doc/TutorialSparse.dox @@ -83,7 +83,7 @@ There is no notion of compressed/uncompressed mode for a SparseVector. \section TutorialSparseExample First example -Before describing each individual class, let's start with the following typical example: solving the Laplace equation \f$ \nabla u = 0 \f$ on a regular 2D grid using a finite difference scheme and Dirichlet boundary conditions. +Before describing each individual class, let's start with the following typical example: solving the Laplace equation \f$ \Delta u = 0 \f$ on a regular 2D grid using a finite difference scheme and Dirichlet boundary conditions. Such problem can be mathematically expressed as a linear problem of the form \f$ Ax=b \f$ where \f$ x \f$ is the vector of \c m unknowns (in our case, the values of the pixels), \f$ b \f$ is the right hand side vector resulting from the boundary conditions, and \f$ A \f$ is an \f$ m \times m \f$ matrix containing only a few non-zero elements resulting from the discretization of the Laplacian operator. -- cgit v1.2.3