Joel Sjögren

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Math projects

Here’s an online Newton fractal exporer. Requires multitouch.
I started a book translation project. . It is kind of obsolete now that we have LLMs.
I used to have a math blog.
Sketch of a ‘type theoretic’ notion of functor differentiation, with a proof of the chain rule.

Music projects

There is also some ‘sheetmusic’.

Vibe coding

Web hacks

C++ projects

A long time ago when I first started using C++, I wrote these things: