Ivan Shishkin, The Forest Clearing

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The birthday problem Aimez-vous les œufs brouillés ?^FR Deux rectangles superposés^FR Problème des coureurs^FR Un hôtel qui ne concurrence pas l’hôtel de Hilbert...^FR The devil’s logic The truncated chessboard Les prisonniers et les chapeaux^FR Uniqueness of the limit The best apartment Une histoire d’ombres - Episode 2^FR Des vaches trop gourmandes^FR Méthode pour construire un triangle équilatéral^FR Une histoire d’ombres - Episode 1^FR Carrés dans un anneau^FR L’âge de vos petits cousins^FR Une thèse bien longue...^FR Geometric determination of a solution to the equation

x^{2}+px=q

Coins in the river Unicity of the identity element Groups of order 41 Endomorphism with all eigenvectors "Quick" integrations by part (level

3

)The group of units of ℤ/nℤ Interior of a vector subspace Limit of a sum of periodic functions Commutativity Forest tournament Absolute cinema^FR Coffee now, regret later Méthode pour construire un triangle isocèle^FR 1,2,3... Shoot !Dans la peau de Guillaume Tell^FR Partial solar eclipse 2 How can you prove you know a secret without revealing it?Estimating altitude from atmospheric pressure Compacity of the Julia sets Determinant of a gcd matrix Marden’s theorem Eigenvalues of a weird matrix Is

\sqrt{2}

a rationnal number ?An equation solvable by radicals ?A simple homeomorphism?What is the blind spot from a monitoring room ?Equations of an ellipse ?The golden imposter A simple example of homotopy Nar-mayas and the caravan master Roots of the derivative of a quadratic polynomial Discrete topological manifolds