# Popularization of mathematics

I play an active part in the diffusion of mathematics among a wide or scholar audience. I am managing part of this diffusion for the Fourier Institute:

## Talks

As some of my colleagues, I present talks and activities for a scholar or wide audience. My main talks are:
• an introduction to the topology via the world of Pacman. The purpose is to understand which forms are obtained by gluing the edges of a square. The talk also includes participation of the audience (creation and cutting of the Moebius band, Euler caracteristic of a balloon...).
• a more or less technical talk about Joseph Fourier and the music. The main goals are to show how mathematics progress and why they are still alive and present in our lives. I explain Fourier transform via a small Python program and via several sounds. The talk may be more or less related to music, depending on the audience. This short movie (french) gives an idea of the spirit.
• activities on the Rubik's Cube and more particularly on a very simplified version of it. This leads to the notions of group, non-commutativity, inversion of sequences of operations, algebraic notations... Here, any conjecture can be checked by manipulations of the puzzle. This simplified version of the Rubik's Cube may also be used to talk about permutations and signatures. You can play online with the Javascript version.
Some related programs may be found below.

## Mathematical objects

I am interested in the use of objects in mathematical teaching: manipulation, illustration and historical or more recent applications. I am collecting mathematical objects or I made it myself via a Fablab. Some of these objects are on display in the entrance of the Institute: a double pendulum, fractals, a Galton board, several paradoxal dices, slide rules, a planimeter, Klein bottles, a Gömböc...

## Computer programs

These programs are used for teaching or diffusion of mathematics. I do not ensure that they run on any computer, I let you adapt the program yourself. The following ones are coded in Python:

## Articles

I wrote some notes and online articles about miscellaneous mathematical subjects. They are in french, so if you are interested, look at the french version of this page.