Cleve Moler

MathWorks

Last seen: 2 days ago | Active since 2012

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The world's first MATLAB programmer.

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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...

4 days ago

Published

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...

1 month ago

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Matrices at an Exposition
A look at the structure, and the eigenvalues and singular values of interesting test matrices....

2 months ago

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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...

2 months ago

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LUTool, Animation of Gaussian Elimination
LUTool provides an interactive animation of Gaussian elimination, the most important algorithm in technical...

3 months ago

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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...

5 months ago

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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,...

5 months ago

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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 '+...

6 months ago

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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,...

7 months ago

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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...

7 months ago

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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...

7 months ago

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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...

7 months ago

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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...

8 months ago

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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...

8 months ago

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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...

10 months ago

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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....

10 months ago

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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...

12 months ago

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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....

12 months ago

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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...

1 year ago

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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...

1 year ago

Published

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

1 year ago

Published

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

1 year ago

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Nick Higham (1961-2024)
Nick Higham passed away last Saturday. Nick was a close friend of mine and a great friend of MATLAB. I will leave it to...

1 year ago

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Exponential Fitting, Separable Least Squares, and Quahogs
We have been investigating a recent bug report about fitnlm, the Statistics and Machine Learning Toolbox function for robust...

1 year ago

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Season’s Greetings
Season's Greeings Get the MATLAB code (requires JavaScript) Published with MATLAB®...

1 year ago

Published

Blog Post Number 300, Vibrating Logo
This is post number 300 of Cleve's Corner blog. The first post was on June 6, 2012, which is 600 weeks ago. So, I have...

1 year ago

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Bouncing Bucky Ball at Flipbook Mini Hack
The 2023 MATLAB Central Flipbook Mini Hack contest runs from November 6 until December 3. Over 200 entries have been...

1 year ago

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Exploring Matrices Exercises
Try you hand at a few exercises involving Exploring Matrices....

1 year ago

Published

Exploring Matrices
I have spent much of my career working to bring abstract linear algebra and practical matrix computation closer together. ...

1 year ago

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MiniGallery, Sampler of MATLAB Test Matrices
MATLAB has dozens of test matrices. Here are a few....

2 years ago