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New York Times Colors
I admire the color scheme in the New York Times Games section and occasionally make it my colororder....
5 jours il y a
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Nick Trefethen
Nick Trethen is a world famous computational scientist and my good friend....
environ un mois il y a
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Jack Dongarra
Jack Dongarra is my student, colleague and friend....
environ un mois il y a
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Tangram Puzzles
The tangram is an ancient Chinese puzzle with seven pieces....
2 mois il y a
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Travel Report, JUIT, India
I was invited recently to give a virtual talk to the student chapter of SIAM at JUIT, the Jaycee Institute of Information...
3 mois il y a
A résolu
Find the maximum number of decimal places in a set of numbers
Given a vector or matrix of values, calculate the maximum number of decimal places within the input. Trailing zeros do not count...
5 mois il y a
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Wordler and I Fail on Puzzle 1497
Like millions of other folks, I play Wordle from the New York Times almost every day. The Times reports that Wordle puzzle...
5 mois il y a
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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...
6 mois il y a
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Trip Report, Householder XXII
The twenty-second Householder Symposium on Numerical Linear Algebra was held June 8 - June 13 at Cornell. The local...
6 mois il y a
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A Million Dollar Matrix
The twenty-second Householder Symposium on Numerical Linear Algebra is this week, June 8 - June 13, 2025 at Cornell. My...
7 mois il y a
Publié le
Revolving Century Puzzle and Magic Squares
The Revolving Century puzzle is a beautifully made wooden puzzle from Creative Crafthouse in Hudson, Florida.... read more...
8 mois il y a
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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...
8 mois il y a
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The Hat, a Tridecagon Aperiordic Monotile
Two years ago, in March of 2023, an unlikely team of mathematical hobbyists announced the discovery of a remarkable...
9 mois il y a
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Matrices at an Exposition
A look at the structure, and the eigenvalues and singular values of interesting test matrices....
10 mois il y a
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Two Flavors of SVD
MATLAB has two different ways to compute singular values. The easiest is to compute the singular values without the...
10 mois il y a
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LUTool, Animation of Gaussian Elimination
LUTool provides an interactive animation of Gaussian elimination, the most important algorithm in technical...
11 mois il y a
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Code for Sonic and Ten Sonic Movies
Two previous blog posts, Dec. 12, 2024 and Nov. 16, 2024, introduced "Sonic", my new tool for incorporating sound in...
environ un an il y a
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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,...
environ un an il y a
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Lights, Camera, Action — and Sound
I am very excited to incorporate sound in animations. This blog post has five examples with links to videos enclosed in '+...
environ un an il y a
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Möbius, Mertens and Redheffer
Recently, I have made a series of blog posts about Redheffer matrices and the Mertens conjecture. After each of the posts,...
environ un an il y a
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Experience With Chatbots Generating MATLAB
A friend is investigating the use of generative AI in his classes. I asked two different popular chatbots to write MATLAB...
environ un an il y a
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Redheffer and Mertens, Accelerated
Shortly after I published the second post about the Mertens conjecture, a reader's comment suggested a new approach to...
environ un an il y a
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Redheffer and Mertens, Continued
Shortly after I posted Redheffer, Mertens and One-Million Dollars a few days ago, Mathworks' Pat Quillen made an important...
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Redheffer, Mertens and One-Million Dollars
I didn't know anything about these topics until a couple of weeks ago. Now I can't stop thinking about them.... read more...
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NA_Digest and NA_Net
The NA-Digest is an electronic newsletter for the numerical analysis and scientific software community. The NA-Digest is...
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A Treacherous SVD
A few days ago, a bug report from our office in Cambridge caught my attention. Computing the singular values and singular...
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SuperSum, In Defense of Floating Point Arithmetic
Floating point arithmetic doesn't get the respect it deserves. Many people consider it mysterious, fuzzy, unpredictable....
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IBM Hexadecimal Floating Point
Our technical support group recently received a request for a tool that would convert IBM System/360 hexadecimal floating...
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