learning via negativa https://learningvianegativa.com/ Notes, essays, and experiments. en-us Mon, 10 Aug 2026 18:15:02 GMT An attempt at recreating the amazing Hirajoshi wave https://learningvianegativa.com/posts/hirajoshi-wave.html https://learningvianegativa.com/posts/hirajoshi-wave.html Sat, 08 Aug 2026 03:47:03 GMT An attempt at recreating the amazing Hirajoshi wave

An attempt at recreating the amazing Hirajoshi wave that @mathemetica had posted a while ago, which I am unable to find now.

Rendered in pure HTML with the help of Claude Opus 5. Added rate and sphere count controls.

Spheres trace the paths of the C Hirajoshi scale.

]]> No, son... https://learningvianegativa.com/posts/no-son.html https://learningvianegativa.com/posts/no-son.html Sat, 08 Aug 2026 02:14:31 GMT No, son...

#cartoons

No, son... ChatGPT Image Aug 7, 2026, 09_14_52 PM.png

]]> iykyk https://learningvianegativa.com/posts/iykyk.html https://learningvianegativa.com/posts/iykyk.html Sat, 08 Aug 2026 01:06:56 GMT iykyk

#cartoons

Do you get the reference?

4EAC72CD-E87A-4362-87DC-83A7939A5892.png

]]> Varentropy as a measure of fat-tailnedness https://learningvianegativa.com/posts/tail-fatness-lab.html https://learningvianegativa.com/posts/tail-fatness-lab.html Fri, 07 Aug 2026 00:00:00 GMT Varentropy as a measure of fat-tailnedness

#stats #varentropy #kurtosis #fat tails #interactive

@nntaleb wrote in X about how varentropy could be a useful replacement for kurtosis as a measure of fait-tailedness.

IMG_8878.jpg

Simple variability is a 1st order measure that measures the spread, and kurtosis measures the shape (thin vs fat tail) of the distribution. However, kurtosis breaks down when the tail gets fat enough, whereas varentropy survives even where kurtosis doesn’t, making it a more robust measure.

The little widget below lets you play with the tail index to see what happens to the four measures (variance/kurtosis, entropy/varentropy) when you vary the tail-index.

]]> NNT Books https://learningvianegativa.com/posts/nnt-books.html https://learningvianegativa.com/posts/nnt-books.html Fri, 07 Aug 2026 00:00:00 GMT NNT Books

#books

@nntaleb often publishes pictures of his amazing collections of book shelves.

The wdget below is a threejs representation of the books from his collection as sort of a 3D library with book cases and shelves. You can scroll through through the books here.

If you want to see the details of a book, click on the widget to go to the 3D library site with the book cases and shelves. It's an interactive site, so you can either use your mouse or touch to navigate to the book, or just use the search button.

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