Posts 1 - 10 of 19

Results for: 2024

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.... read more >>

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.... read more >>

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 '+ + + +'.... read more >>

Möbius, Mertens and Redheffer 6

Recently, I have made a series of blog posts about Redheffer matrices and the Mertens conjecture. After each of the posts, readers and colleagues offered suggestions to speed up the calculations. Here is a summary of what I have learned.... read more >>

Experience With Chatbots Generating MATLAB 1

A friend is investigating the use of generative AI in his classes. I asked two different popular chatbots to write MATLAB programs for a mathematically nontrivial problem. Both chatbots understood my query and both wrote plausible MATLAB programs, but one of the programs was not correct. My recommendation for coursework: carefully read and test programs produced by generative AI and repair any incorrect ones.... read more >>

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.... read more >>

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.... read more >>

Redheffer, Mertens and One-Million Dollars 1

I didn't know anything about these topics until a couple of weeks ago. Now I can't stop thinking about them.... read more >>

NA_Digest and NA_Net 1

The NA-Digest is an electronic newsletter for the numerical analysis and scientific software community. The NA-Digest is one of world's first examples of social networking. The Digest is one of the forces that makes our community a living, viable community.... read more >>

A Treacherous SVD 1

A few days ago, a bug report from our office in Cambridge caught my attention. Computing the singular values and singular vectors of a particular matrix would sometimes cause MATLAB to crash.... read more >>

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