The answer:A\Ais alwaysI, except when it isn't....read more >>

My recent obsession with cubes in this blog has led me back to Rubik's cube, perhaps the greatest mathematical puzzle of all time....read more >>

A few months ago, I had never heard of Karl Menger or the cube-like fractal that he invented. Now I have this long blog post about the sponge, and an extension that I am calling its "associate"....read more >>

A cube is the familiar three-dimensional solid with eight vertices, six faces and twelve edges. I have been working with cubes recently in posts about both the Menger sponge fractal and the 4-by-4 matrix from computer graphics....read more >>

Thecomplementof an evolving Menger sponge is all of the material that has been removed so far....read more >>

Season's Greetings 2021 __________________________________________________________Marc Lätzel (2021). XMas Tree (//www.tatmou.com/matlabcentral/fileexchange/9337-xmas-tree),MATLAB...read more >>

On a recent visit to Ann Arbor, I met ten-year old Eden Rajapakse. Here is her sketch of the L-shaped membrane. Download Live...read more >>

The Menger sponge is a popular fractal that generalizes Cantor sets and Sierpinski triangles. Its fractal dimension is between two and three....read more >>

Matrices in action....read more >>

SeeCubeandTeapot....read more >>