Cleve Moler

MathWorks

Last seen: 6 jours il y a | Actif depuis 2012

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The world's first MATLAB programmer.

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Tangram Puzzles
The tangram is an ancient Chinese puzzle with seven pieces....

10 jours 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...

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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...

3 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...

3 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...

4 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...

4 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...

5 mois il y a

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Revolving Century Puzzle and Magic Squares
The Revolving Century puzzle is a beautifully made wooden puzzle from Creative Crafthouse in Hudson, Florida.... read more...

6 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...

6 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...

7 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....

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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...

8 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...

9 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...

11 mois 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,...

11 mois 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 '+...

12 mois 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,...

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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...

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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...

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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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A Sixty-Year Old Program for Predicting the Future
The graphics in my post about R^2 were produced by an updated version of a sixty-year old program involving the U.S....

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R-squared. Is Bigger Better?
The coefficient of determination, R-squared or R^2, is a popular statistic that describes how well a regression model fits...

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Closest Pair of Points Problem
The Closest Pair of Points problem is a standard topic in an algorithms course today, but when I taught such a course fifty...

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Twenty Years of Parallel MATLAB
I have just returned from the MathWorks company meeting celebrating our 40th Anniversary. In one of the presentations, Jos...

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Chaotic Swinging Sticks
The Swinging Sticks is a kinetic sculpture that exhibits chaotic motion. The device became very popular after it upstaged...

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