enkele getaltheorieprojecten voor middelbare schoolstudenten (die we gebruiken bij de summer of science)

some old writings for PROMYS: Bernouilli numbers, Dedekind sums, Hilbert's tenth problem, graph coloring

some problem-solving and memes,  math visuals video playlist

I enjoy thinking about interdisciplinary stuff,  bridging the gap between recreational mathematics, conceptual art and didactics.  Feel free to share with me your projects in this direction! I am working on an algebra book which contains no symbols (only arrows).


things not mine:

On the Importance of Pedantry 

gender bias in math  (which i learnt from jef)

axioms for math didactics


Citation of Euler on mathematical speculations (just having discovered the addition rule on elliptic curves): 

If one examines their usefulness, mathematical speculations seem to be reducible to two great classes; to the first class belong those who bring a remarkable benefit both to the common life and to the other arts, and the price grows usually with this benefit. But another class collects those speculations which, without being related to any remarkable benefit, are nevertheless able to develop the ends of Analysis and to sharpen the strength of our spirit. Indeed, as we are led to abandon a great many research from which we may expect a lot of profit, only because of a want of analysis, it seems that we do not have to estimate at a lower price a work which promises non-negligible advances in Analysis. With this goal in mind, those observations are particularly valuable, which were done almost by chance and were discovered a posteriori, for which one sees neither any a priori reason nor any direct way to reach them. But the truth being already known, it will be possible to search more easily among those observations for some methods which lead directly to that truth. It is clearly beyond any doubt that the search for new methods contributes a lot to the promotion of the goals of Analysis.

martin demaine (check the puzzle fonts!)

antonella perucca (some interesting didactal stuff)

homophonic quotients