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Accueil | Page principale Jeux et Mathématiques

Mars 2010 : Un Prix du Millénaire pour Grigori Perelman

Jeu du triangle retourné En déplaçant un minimum de pièces, inversez le triangle.

triangle
George Boole fait la différence Des différences finies qui simplifient les démonstrations.
La lettre de Grothendieck.
[Graphes, Géométrie, Constructions] Articulations planes et tenségrité.
Comment rigidifier une structure plane à mailles carrées en plaçant des fils sur les diagonales.
Un graphe biparti aide à résoudre le problème.

Pick
Mailles carrées ou en losanges

[Géométrie, Fractions, Arithmétique] Les polygones convexes réguliers permettent de construire manuellement plusieurs configurations finies et divers pavages du plan.
Une fois découpés, ces polygones sont riches d'applications géométriques, combinatoires, arithmétiques à réaliser dans les classes depuis la maternelle jusqu'au lycée et même au-delà.

au départ
Maintenez le cap


À signaler, la mise en ligne d'un tout récent pseudo-cours de logique constructive.

Propriétés des parties entières

Route

Théorème de Pick est un exemple qui permet d'utiliser le matériel disponible à la page Feuilles A4, Documents utiles à imprimer.


Une expérience qui s'est réellement déroulée il y a plus de quarante ans dans la région Lyonnaise, sert de point de départ à des découvertes de propriétés des paires de dés à jouer.

au départ

Le troisième épisode de ce qui devient une série « deux dés à l'école » vient de paraître, il s'agit de Deux dés pour 36 naturels qui était précédé du second épisode Une compétition plus équitable. La série débutait par le premier article Les dés du colonel


En logique intuitionniste ou constructive, les polynômes d'ensembles et la démonstration par l'absurde.

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Quelle est la troisième lettre du mot mflx ? :