Welcome, dear reader

This is a collection of opinions, thoughts, projects, and things I have enjoyed reading and studying.

Featured

• Death, taxes and optimization

  23 Sep, 2025

  Modelling Rushhour 🚗 🚚 as an optimization problem.

• Die Mutter aller neuen Resultate in der analytischen Mechanik

  Updated: 31 Aug, 2025

  Stationary action principles form the foundation of modern physics, spanning classical mechanics to quantum field theory and general relativity. The history of the principle of least action is fascinating, involving beautiful mathematics, as well as profound philosophical and scientific debates.

• A programming language for describing (most) of the world

  14 Jul, 2025

  A MIT/GNU Scheme kernel for Jupyter. Scheme is a functional programming language that is well-suited for describing symbolic mathematics and classical mechanics, among other things.

• Look up (part II)

  2 Apr, 2025

  Constellations are celestial landmarks and a source of awe and inspiration for myths. They are also a canvas on which humans have painted their mythologies. This is a Stellarium remote control for kids.

• The Arabian nights of numbers

  13 Mar, 2025

  The most poetic math book a young person can read.

• The Three Body Problem

  17 Feb, 2025

  An amazing book on one of my favorite topics ever, calculus of variations.

Recent Posts

• Who is up for a programming challenge?

  Updated: 21 Sep, 2025

  Is anyone still doing good, old-fashioned programming? Or is everyone prompting and trying to tame LLMs (and asking themselves why)? Here's a small programming challenge, a brain teaser and a balm for the soul.

• Who is up for a game of ... however this thing is called?

  Updated: 22 Aug, 2025

  You will think that in the age of AI-powered search, identifying a game like this provided a description or a picture would be a matter of seconds. Not quite.

• Turtles all the way down, understanding the foundations

  28 Jul, 2025

  The History of Philosophy Without Any Gaps is an impressive project that began in 2010 with the ambitious goal of covering the entire history of philosophy in a concise yet comprehensive and nearly systematic way.

• A physics- and geometry-aware programming language for telling love stories

  3 Jul, 2025

  Discover how Stellarium's scripting engine can be used to create engaging astronomical stories and educational content for children.