Educational MATLAB Software
PerOlof Persson, UC Berkeley Mathematics

Tridiagonal Eigenvalues in MATLAB 
Interface to LAPACK routines for computing eigenvalues of tridiagonal
matrices and singular values of bidiagonal matrices

Level Set Demo 
Simple MATLAB scripts for illustration of explicit/implicit interface
tracking, reinitialization, and the fast marching method.

fempoisson.m  Solves the Poisson
equation on an unstructured grid (square in this example but easy to
change) using linear finite elements. Good start to learn about
implementation of FEM.

poiunit.m  Fourier solution of
Poisson's equation on the unit line, square, or cube. Good for
verification of Poisson solvers, but slow if many Fourier terms are
used (high accuracy).

laplacefft.m  Solve the Laplace
equation on a rectangular domain using the FFT. Supports Dirichlet or
Dirichlet/Neumann conditions. Contains the following short functions
for discrete Sine and Cosine transforms:

dst.m  Discrete Sine Transform DSTI

idst.m  Inverse Discrete Sine
Transform IDSTI

dct.m  Discrete Cosine Transform
DCTI

idct.m  Inverse Discrete Cosine
Transform DCTI

Implementation of Finite ElementBased
NavierStokes Solver
