Published
WordBot and Words, My Wordle Assistants
I am late joining the Wordle craze. Over a year ago, MATLAB programs for solving Wordle puzzles were described by Adam...
nästan 2 år ago
Published
R2-D2, Rotations and Dilations in Two Dimensions
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...
nästan 2 år ago
Published
My Chat With ChatGPT
While it is still fresh in my mind, I want to describe the conversation I had with a publicly available version of ChatGPT,...
nästan 2 år ago
Published
Grafix Users Guide
This is a quick look at Grafix, our tool for exploring matrices via 3-D computer graphics....
nästan 2 år ago
Published
Matrices In Action, Grafix 2.0
The Swinging Sticks is a kinetic sculpture that exhibits chaotic motion. The device became very popular after it...
nästan 2 år ago
Published
Singular Matrix Pencils and the QZ Algorithm, Update
(The January 5 posting was premature and incomplete.)...
nästan 2 år ago
Published
Singular Matrix Pencils and the QZ Algorithm
This year, 2023, is the 50-th anniversary of the QZ algorithm for generalized matrix eignenvalue problems,... read more...
nästan 2 år ago
Published
Color Cube Meets Rubik’s Cube
I have made a half dozen blog posts about Rubik's Cube so far this year. And, during the MATLAB Central Mini Hack in...
ungefär 2 år ago
Published
Christian Reinsch, Roland Bulirsch, and the SVD
Christian Reinsch and Roland Bulirsch both passed away recently, Reinsch on October 8 and Bulirsch on September 21. Reinsch...
ungefär 2 år ago
Published
An Interactive Version of colorcubes
A 231-character static version of colorcubes in the current MiniHack generated quite a bit of interest. So I am posting the...
ungefär 2 år ago
Published
modfun, A Short Program Produces Impressive Graphics
This nifty graphics gem started with a contribution by Paul Villain to the MATLAB 2022 Mini Hack, currently taking place on...
ungefär 2 år ago
Published
Trio, A Wooden Puzzle from the Czech Republic
"Clever Toys" is a puzzle company in the Czech Republic. Their Web site describes five different hand-made, wooden puzzles...
ungefär 2 år ago
Published
Rubik’s Cube Superflips and God’s Number
How hard is it to solve a Rubik's Cube?When can you say that your Rubik's Cube is completely scrambled?Why might the answer...
mer än 2 år ago
Published
Polygons, Polyshapes and Puzzles
Until recently, I knew nothing about the polyshape object in MATLAB. Now I can use polyshape to simulate an extraordinary...
mer än 2 år ago
Published
An Interesting, and Perhaps New, Matrix
I do not recall having seen this matrix before, but I will not be surprised to learn that somebody else already knows all...
mer än 2 år ago
Published
Rotation Matrices
The matrices in the following animations are at the heart of computer graphics. They describe objects moving in...
mer än 2 år ago
Published
Digital Simulation of Rubik’s Cube with Qube
This blog post describes Qube, my Rubik's Cube simulator. Source code for Qube is now available in one single file from this...
mer än 2 år ago
Published
Digital Simulation of Rubik’s Cube
Rubik's Cube is one of the great mathematical puzzles of all time. Most people are just interested in solving Rubik's Cube...
mer än 2 år ago
Published
The Enigma Qube, Merging an Enigma Machine and a Rubik’s Cube
An Enigma Machine combined with a Rubik's Cube makes an encryption device with unprecedented power....
mer än 2 år ago
Published
Rubik’s Cube
My recent obsession with cubes in this blog has led me back to Rubik's cube, perhaps the greatest mathematical puzzle of all...
nästan 3 år ago
Published
The Menger Sponge, Complement and Associate
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...
nästan 3 år ago
Published
Anatomy of a Cube
A cube is the familiar three-dimensional solid with eight vertices, six faces and twelve edges. I have been working with...
nästan 3 år ago
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The Complement of the Menger Sponge
The complement of an evolving Menger sponge is all of the material that has been removed so far....
nästan 3 år ago
Published
Season’s Greetings 2021
Season's Greetings 2021 __________________________________________________________Marc Lätzel (2021). XMas Tree...
nästan 3 år ago
Published
A New View of Our Logo
On a recent visit to Ann Arbor, I met ten-year old Eden Rajapakse. Here is her sketch of the L-shaped membrane. ...
nästan 3 år ago
Published
The Menger Sponge Fractal
The Menger sponge is a popular fractal that generalizes Cantor sets and Sierpinski triangles. Its fractal dimension is...
ungefär 3 år ago
