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Draft Friandises Math

Infinitely Many Hats (3/3)

Countably infinitely many hats
Countably infinitely many hats

This is the last in a series of three exercices de style to show some interesting aspects of the game of hats: a puzzle which was initially proposed by Lionel Levine.

Here we look at case where each player has a tower of countably infinitely many hats on their head and try constructing efficient strategies from the results of the first exercice.

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La vie

Guifred II de Cerdagne

Guifred II comte de Cerdagne et de Confluent entreprit en 1001 de fonder l’abbaye Saint-Martin du Canigou. Sa pierre tumulaire en écriture onciale, perdue puis retrouvée dans le pavement de l’église de Casteil a été replacée dans son lieu d’origine en 2019 :

GUIFREDI COMITIS CINERES MONACHIQUE BEATI
ARTIFISQUE LOCI CONTINET ISTE LAPIS
FINE SUO IULIUS HUIC FINEM MILLE SUB ANNIS
BIS QUATER QUINIS CONTULIT ATQUE IX

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La vie Music

Scott Ross

Domenico Scarlatti (1685-1757), sonatas :

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Coding Tips

WordPress Cheatsheet

Child themes

Child themes are the recommended way to customize your favorite WordPress theme.

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Friandises Math

0! = 1

La fonction factorielle est souvent définie comme le produit : $$n!=\prod_{k=1}^n k\text{,}$$ ou bien par récurrence : $$n!=n\cdot(n-1)!\text{,}$$ en prenant par convention : $0!=1$. Mais pourquoi cette convention ?

Zero
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Friandises Math

Classic 15 Puzzle

15-puzzle by Mark Rohlich

Genesis

The Fifteen Puzzle consists of fifteen numbered square tiles in a 4×4 square grid, with one position empty or blank. Any tile horizontally or vertically adjacent to the blank can be moved into the blank position. The task is to rearrange the tiles from some random initial configuration into a desired goal configuration, ideally or optimally using the fewest moves possible.

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Friandises

AlphaGo

AlphaGo versus Lee Sedol Game 2 – March 10th 2016
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Friandises

Colors

Colors are beautiful. Colors have names. Get to know them.

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For-the-record

Cheaper Matrix Clocks

Terschelling, The Netherlands, September 29 – October 1. Text of the paper available here.

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For-the-record

VLC Module/portaudio

A piece of retro-coding to which I contributed.

Back in 2004, VLC release 0.8 added cross-platform support for audio devices with PortAudio, and at last I was able to play quadraphonic streams1 on my hi-fi 😀