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Wordle Sneak Previews
Wordle Sneak PreviewsThe Web sites that are claiming to have advance knowledge of the daily Wordle answer have become...
1 year ago
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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...
2 years ago
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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...
2 years ago
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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,...
2 years ago
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Grafix Users Guide
This is a quick look at Grafix, our tool for exploring matrices via 3-D computer graphics....
2 years ago
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Matrices In Action, Grafix 2.0
The Swinging Sticks is a kinetic sculpture that exhibits chaotic motion. The device became very popular after it...
2 years ago
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Singular Matrix Pencils and the QZ Algorithm, Update
(The January 5 posting was premature and incomplete.)...
2 years ago
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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...
2 years ago
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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...
2 years ago
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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...
2 years ago
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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...
2 years ago
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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...
2 years ago
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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...
2 years ago
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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...
2 years ago
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Polygons, Polyshapes and Puzzles
Until recently, I knew nothing about the polyshape object in MATLAB. Now I can use polyshape to simulate an extraordinary...
2 years ago
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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...
2 years ago
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Rotation Matrices
The matrices in the following animations are at the heart of computer graphics. They describe objects moving in...
2 years ago
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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...
2 years ago
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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...
2 years ago
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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....
2 years ago
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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...
3 years ago
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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...
3 years ago
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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...
3 years 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....
3 years ago
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Season’s Greetings 2021
Season's Greetings 2021 __________________________________________________________Marc Lätzel (2021). XMas Tree...
3 years ago
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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. ...
3 years ago
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The Menger Sponge Fractal
The Menger sponge is a popular fractal that generalizes Cantor sets and Sierpinski triangles. Its fractal dimension is...
3 years ago
