A look at the structure, and the eigenvalues and singular values of interesting test matrices.... read more >>

LUTool provides an interactive animation of Gaussian elimination, the most important algorithm in technical computing.... read more >>

Nick Higham passed away last Saturday. Nick was a close friend of mine and a great friend of MATLAB. I will leave it to others to describe his research and teaching, his many honors, and his service to our community, especially SIAM. I have just a few, more personal, comments.... read more >>

Try you hand at a few exercises involving Exploring Matrices.... read more >>

I have spent much of my career working to bring abstract linear algebra and practical matrix computation closer together. This project is my latest effort.... read more >>

MATLAB has dozens of test matrices. Here are a few.... read more >>

R2_D2 is is the name I've given a new MATLAB program that provides animations of 2-by-2 rotation and dilation matrices. I admit I chose "dilations" so the acronym would be memorable, but otherwise the code has little to do with the famous Star Wars droid.... read more >>

This is a quick look at Grafix, our tool for exploring matrices via 3-D computer graphics.... read more >>

The Swinging Sticks is a kinetic sculpture that exhibits chaotic motion. The device became very popular after it upstaged Tony Stark in Iron Man 2. My daughter Carolyn gave me a desktop version of Swinging Sticks for Christmas. I immediately set out to simulate it.... read more >>

(The January 5 posting was premature and incomplete.)... read more >>