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Posts 1 - 10 of 141

結果: Fun

Wordler and I Fail on Puzzle 1497 2

Like millions of other folks, I play Wordle from the New York Times almost every day. The Times reports that Wordle puzzle number 1497 on Friday, July 25, was especially difficult. The average puzzler required 5.7 attempts and many failed to get the answer in the six moves allowed. I have a MATLAB assistant that I call Wordler and, even with her help, I failed on number 1497. Here's why.... 続きを読む >>

My Favorite MATLAB Demos

In 1988, while I was with Ardent Computer in Silicon Valley, I gave a talk that previewed MATLAB graphics. The title was "Pictures of Matrices". At the time, a mathematician friend of mine asked.... 続きを読む >>

Trip Report, Householder XXII

The twenty-second Householder Symposium on Numerical Linear Algebra was held June 8 - June 13 at Cornell. The local organizers were Anil Damle, Alex Townsend and David Bindel. Anil served as host and cheerleader.... 続きを読む >>

Revolving Century Puzzle and Magic Squares 2

The Revolving Century puzzle is a beautifully made wooden puzzle from Creative Crafthouse in Hudson, Florida.... 続きを読む >>

L-systems, Plants, Fractal Curves, Turtles and Dragons

No, this is not the script for an episode of "Game of Thrones". It is a blog post about Lindenmayer grammars, growing plants, space-filling fractals, turtle graphics and dragon curves.... 続きを読む >>

Code for Sonic and Ten Sonic Movies 2

Two previous blog posts, Dec. 12, 2024 and Nov. 16, 2024, introduced "Sonic", my new tool for incorporating sound in videos. Today's blog post includes a link to the MATLAB source code for Sonic, as well as links to new versions of ten examples.... 続きを読む >>

Sonic Adds Sound to Logo, Recamán, Chaos

I introduced Sonic in my blog post last month. Today I will use Sonic to add sound to the graphics from three old posts, the vibrating L-shaped membrane, the Recamán sequence and the chaotic behavior of the Swinging Sticks.... 続きを読む >>

Lights, Camera, Action — and Sound 4

I am very excited to incorporate sound in animations. This blog post has five examples with links to videos enclosed in '+ + + +'.... 続きを読む >>

Redheffer and Mertens, Accelerated 4

Shortly after I published the second post about the Mertens conjecture, a reader's comment suggested a new approach to computing Redheffer determinants and the Mertens function. It is now possible to compute a half-million values of the Mertens function in about five hours.... 続きを読む >>

Redheffer and Mertens, Continued 3

Shortly after I posted Redheffer, Mertens and One-Million Dollars a few days ago, Mathworks' Pat Quillen made an important observation about computing the Mertens function.... 続きを読む >>

Posts 1 - 10 of 141