The Geometry of Shadows and Light
Can a solid be built that casts various shadows such as the letters of your name or the profiles of your friends? Yes if, visually, nothing
Lennon, McCartney? Statisticians Identify Who Composed In My Life
Statisticians identify who, from Lennon or McCartney, is the composer of In My Life, applying to music data analysis techniques commonly use
Terribly Non-Transitive Dice
A fine analysis of the difference between the arithmetic mean and the median illuminates some aspects of non-transitivity.
The Maximum Size of Disorder
Here is a small challenge. A coloring business that does not require any particular artistic talent. It is about combinatorics and logic.
Boss-Free Decisions
How to emerge global information about a network using only local information? In a relatively simple framework, a solution is based on Toom
Mathematician To A Tee
Mathematics makes it possible to reconstitute the "harmonic filter" that the ear does naturally. Until being able to guide the rac
Prime Numbers Respect Parity
In mathematics, the magic lies in the contrast between our perception a priori and the evidence: if many can understand the statement and ha
Homage to Maurice Nivat, Pioneer in Theoretical IT
Maurice Nivat has just died shortly before his 80th birthday, after playing a fundamental role in organising and promoting theoretical compu
Statistics Win Points in Basketball
The US basketball season is in full swing. Some teams are clocking up good results; others are thinking of transferring players to enhance t
A Little Layout Problem
Where should you place a lamp that will light up the whole room? After looking for a while, you decide not to light the room directly. Follo
