{"id":438,"date":"2016-01-21T16:20:24","date_gmt":"2016-01-21T15:20:24","guid":{"rendered":"http:\/\/perso.ens-lyon.fr\/ghys\/?page_id=438"},"modified":"2024-07-05T19:12:46","modified_gmt":"2024-07-05T18:12:46","slug":"articles-et-billets","status":"publish","type":"page","link":"https:\/\/perso.ens-lyon.fr\/ghys\/articles-et-billets\/","title":{"rendered":"Articles et billets"},"content":{"rendered":"<h4><\/h4>\n<h4>Dans Images des Math\u00e9matiques<\/h4>\n<p><strong>Articles<\/strong> :<\/p>\n<ul>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/L-effet-papillon.html\" class=\"broken_link\">L&rsquo;effet papillon<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Geometriser-l-espace-de-Gauss-a.html\" class=\"broken_link\">G\u00e9om\u00e9triser l&rsquo;espace, de Gauss \u00e0 Perelman.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Chercher-midi-a-midi-et-quart.html\" class=\"broken_link\">Chercher midi \u00e0 midi et quart<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Un-cadran-solaire-digital.html\" class=\"broken_link\">Un cadran solaire digital<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Trois-mille-deux-cent-soixante.html\" class=\"broken_link\">Trois-mille deux cent soixante-quatre<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Un-systeme-triple-orthogonal.html\" class=\"broken_link\">Un syst\u00e8me triple orthogonal<\/a>, avec Jos Leys.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/La-courbe-de-Menger.html\" class=\"broken_link\">La courbe de Menger<\/a>, avec Jos Leys.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Les-tables-de-multiplication.html\" class=\"broken_link\">Les tables de multiplication<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Le-pli-et-la-fronce.html\" class=\"broken_link\">Le pli et la fronce<\/a>, avec Jos Leys.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Le-moulin-a-eau-de-Lorenz.html\" class=\"broken_link\">Le moulin \u00e0 eau de Lorenz<\/a>, avec Jos Leys.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Il-y-a-quatre-cents-ans-Sidereus.html\" class=\"broken_link\">Il y a quatre cents ans&#8230; Sidereus Nuncius<\/a>, avec Jos Leys.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Sidereus-Nuncius-aujourd-hui.html\" class=\"broken_link\">Sidereus Nuncius&#8230; aujourd&rsquo;hui<\/a>, avec Jos Leys.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Decision.html\" class=\"broken_link\">D\u00e9cision.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Les-triangles-d-Euclide-de-Gauss.html\" class=\"broken_link\">Les triangles d\u2019Euclide, de Gauss et de Gromov<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Le-prix-de-l-anarchie.html\" class=\"broken_link\">Le prix de l&rsquo;anarchie<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Quand-quatre-courbes-se.html\" class=\"broken_link\">Quand quatre courbes se rencontrent<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Quand-beaucoup-de-courbes-se.html\" class=\"broken_link\">Quand beaucoup de courbes se rencontrent<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Metres-kilogrammes-et-secondes.html\" class=\"broken_link\">M\u00e8tres, kilogrammes et secondes<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Longueurs-surfaces-et-volumes.html\" class=\"broken_link\">Longueurs, surfaces et volumes<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Les-lacs-de-Wada.html\" class=\"broken_link\">Les lacs de Wada<\/a>, avec Jos Leys.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Egalite.html\" class=\"broken_link\">\u00c9<\/a><a href=\"http:\/\/images-archive.math.cnrs.fr\/Egalite.html\" class=\"broken_link\">galit\u00e9.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Un-planimetre-a-cone.html\" class=\"broken_link\">Un planim\u00e8tre \u00e0 c\u00f4ne<\/a>, avec Jos Leys.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/La-machine-a-marcher.html\" class=\"broken_link\">La machine \u00e0 marcher<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Bonne-annee-anomalistique.html\" class=\"broken_link\">Bonne ann\u00e9e anomalistique<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Representer-les-mondes.html\" class=\"broken_link\">Repr\u00e9senter les mondes I<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Representer-les-mondes-II.html\" class=\"broken_link\">Repr\u00e9senter les mondes : les r\u00e9seaux<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/L-union-fait-la-force.html\" class=\"broken_link\">L&rsquo;union fait la force, ou les anneaux borrom\u00e9ens<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Le-differentiel.html\" class=\"broken_link\">Le diff\u00e9rentiel<\/a>, avec A. Alvarez.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Congres-international-Hyderabad.html\" class=\"broken_link\">Congr\u00e8s international, Hyderabad<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Les-problemes-de-Hilbert.html\" class=\"broken_link\">Les probl\u00e8mes de Hilbert : ce qui est embrouill\u00e9 nous rebute<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Impossible.html\" class=\"broken_link\">Impossible<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Clarte-et-comprehension.html\" class=\"broken_link\">Clart\u00e9 et compr\u00e9hension, William Thurston<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Gaspard-Monge.html\" class=\"broken_link\">Gaspard Monge, le beau, l&rsquo;utile, le vrai<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Gaspard-Monge,1094.html\" class=\"broken_link\">Gaspard Monge, le m\u00e9moire sur les d\u00e9blais et les remblais<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Un-carre-dans-une-courbe.html\" class=\"broken_link\">Un carr\u00e9 dans une courbe, une conjecture centenaire de Toeplitz<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/L-histoire-mouvementee-des-cycles.html\" class=\"broken_link\">L&rsquo;histoire mouvement\u00e9e des cycles limites<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Teorema-SHalya.html\" class=\"broken_link\">Teorema-Shalya<\/a><a href=\"http:\/\/images-archive.math.cnrs.fr\/Teorema-SHalya.html\" class=\"broken_link\"> un th\u00e9or\u00e8me franco-russe<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Un-arbre-pythagoricien.html\" class=\"broken_link\">Un arbre pythagoricien<\/a>, avec Jos Leys.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Des-equations-geometriques.html\" class=\"broken_link\">Des \u00e9quations g\u00e9om\u00e9triques ; les p\u00e9r\u00e9grinations de la g\u00e9om\u00e9trie \u00e9num\u00e9rative<\/a>, avec C. Maclean.<\/li>\n<li><a>Le relascope<\/a>.<\/li>\n<li><a>American Institute of Mathematics<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Le-Brazuca-le-ballon-cubique-de-la\" class=\"broken_link\">Le brazuca, le ballon cubique de la coupe du monde.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Subhash-Khot-prix-Nevanlinna-2014\" class=\"broken_link\">Subash Khot, Prix Nevanlinna 2014.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Stanley-Osher-prix-Gauss-2014\" class=\"broken_link\">Stanley Osher, Prix Gauss 2014.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Artur-Avila-medaille-Fields-2014-3335\" class=\"broken_link\">Artur Avila, m\u00e9daille Fields 2014.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Manjul-Bhargava-medaille-Fields-2881\" class=\"broken_link\">Manjul Bhargava, m\u00e9daille Fields 2014.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Martin-Hairer-medaille-Fields-2014\" class=\"broken_link\">Martin Hairer, m\u00e9daille Fields 2014.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Maryam-Mirzakhani-medaille-Fields\" class=\"broken_link\">Maryam Mirzakhani, m\u00e9daille Fields 2014.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Faut-il-mettre-Pythagore-dans-une\" class=\"broken_link\">Faut-il mettre Euclide dans une poubelle ?<\/a><\/li>\n<\/ul>\n<p><strong>Billets<\/strong> :<\/p>\n<ul>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Le-facteur-d-impact-en.html\" class=\"broken_link\">Le facteur d&rsquo;impact en math\u00e9matiques, mesurer l&rsquo;int\u00e9r\u00eat des journaux<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Les-images-comme-symboles.html\" class=\"broken_link\">Les images comme symboles math\u00e9matiques<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Poisson.html\" class=\"broken_link\">Poisson<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/J-ai-saute-une-tranche.html\" class=\"broken_link\">J&rsquo;ai saut\u00e9 une tranche : le calcul de l&rsquo;imp\u00f4t<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Ce-groupe-m-agace.html\" class=\"broken_link\">Ce groupe m&rsquo;agace<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Le-codex-d-Archimede.html\" class=\"broken_link\">Le codex d&rsquo;Archim\u00e8de<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Lisez-les-Lecons-de-mathematiques.html\" class=\"broken_link\">Lisez les \u00ab Le\u00e7ons de math\u00e9matiques d\u2019aujourd\u2019hui \u00bb !<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/L-angoisse.html\" class=\"broken_link\">L&rsquo;angoisse<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Le-plaisir-de-l-amateur.html\" class=\"broken_link\">Le plaisir de l&rsquo;amateur<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/L-etrange-beaute-des-mathematiques.html\" class=\"broken_link\">L\u2019\u00e9trange beaut\u00e9 des math\u00e9matiques<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Le-diable-est-dans-les-chiffres.html\" class=\"broken_link\">Le diable est dans les chiffres<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Ma-bibliotheque.html\" class=\"broken_link\">\u00ab\u00a0Ma\u00a0\u00bb biblioth\u00e8que<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/De-la-pertinence-en-mathematiques.html\" class=\"broken_link\">De la pertinence en math\u00e9matiques<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Shanghai-Perpignan-et-les.html\" class=\"broken_link\">Shanghai, Perpignan et les math\u00e9matiques<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Pierre-Gallais-artiste-et.html\" class=\"broken_link\">Pierre Gallais, artiste et math\u00e9maticien lyonnais<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Notre-diable-est-dans-le-hasard.html\" class=\"broken_link\">Notre diable est dans le hasard<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/lMU-FIFA-CIO.html\" class=\"broken_link\">IMU-FIFA-CIO<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/A-propos-des-congres-de.html\" class=\"broken_link\">\u00c0 propos des congr\u00e8s de math\u00e9matiques<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Des-medailles-pour-les-maths.html\" class=\"broken_link\">Des m\u00e9dailles pour les maths<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Des-evenements-rares.html\" class=\"broken_link\">Des \u00e9v\u00e9nements rares.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Un-expose-de-S-Smirnov.html\" class=\"broken_link\">Un expos\u00e9 de S. Smirnov<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Le-trac.html\" class=\"broken_link\">Le trac<\/a>.<\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Verifier-une-preuve-la-conference,755.html\" class=\"broken_link\">V\u00e9rifier une preuve : la conf\u00e9rence de Irit Dinur.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Cocorico.html\" class=\"broken_link\">Cocorico !<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Communiquer-les-mathematiques-a-la.html\" class=\"broken_link\">Communiquer les math\u00e9matiques \u00e0 la soci\u00e9t\u00e9.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Seoul-2014.html\" class=\"broken_link\">S<\/a><a href=\"http:\/\/images-archive.math.cnrs.fr\/Seoul-2014.html\" class=\"broken_link\">\u00e9oul 2014<\/a><a href=\"http:\/\/images-archive.math.cnrs.fr\/Seoul-2014.html\" class=\"broken_link\">.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Vlasov-sur-Canal.html\" class=\"broken_link\">Vlasov sur Canal !<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/La-chasse-aux-tresors.html\" class=\"broken_link\">La chasse aux tr\u00e9sors math\u00e9matiques.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/La-loi-de-l-arcsinus.html\" class=\"broken_link\">La loi de l&rsquo;arcsinus.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Experience-mathematique.html\" class=\"broken_link\">Exp\u00e9rience math\u00e9matique.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Le-perimetre-du-mur.html\" class=\"broken_link\">Le p\u00e9rim\u00e8tre du mur.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Math-en-Jeans-s-eclate,941.html\" class=\"broken_link\">Math en Jeans s&rsquo;\u00e9clate.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Jeux-Olympiques-au-Bresil.html\" class=\"broken_link\">Jeux olympiques au Br\u00e9sil.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Accident-nucleaire-une-certitude.html\" class=\"broken_link\">Accident nucl\u00e9aire : une certitude statistique.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Les-mecanismes-de-Tchebychev.html\" class=\"broken_link\">Les m\u00e9canismes de Tchebychev.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/L-enigme-des-pentagones.html\" class=\"broken_link\">L&rsquo;\u00e9nigme des pentagones.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/La-Khan-Academy.html\" class=\"broken_link\">La Khan Academy.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Za-normal-noe-raspredelenie.html\" class=\"broken_link\">Za normal noe raspredelenie.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Le-mathematicien-et-le-poete.html\" class=\"broken_link\">Le math\u00e9maticien et le po\u00e8te.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Un-theoreme-et-une-conjecture-de.html\" class=\"broken_link\">Un th\u00e9or\u00e8me et une \u00ab\u00a0conjecture\u00a0\u00bb de Marco.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Graphiques-frelates.html\" class=\"broken_link\">Graphiques frelat\u00e9s.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Que-faites-vous-cet-ete.html\" class=\"broken_link\">Que faites-vous cet \u00e9t\u00e9 ?<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Le-tableau-du-jour.html\" class=\"broken_link\">Le tableau du jour.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Lumieres-dans-le-ciel.html\" class=\"broken_link\">Lumi\u00e8res dans le ciel.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Comment-allonger-a-l-infini-votre.html\" class=\"broken_link\">Comment allonger \u00e0 l\u2019infini votre liste de publications math\u00e9matiques.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Equinoxe-de-printemps.html\" class=\"broken_link\">Equinoxe de printemps.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Visite-au-MoMath.html\" class=\"broken_link\">Visite au Momath.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Apprendre-des-maths-devant-un.html\" class=\"broken_link\">Apprendre des maths devant un \u00e9cran, hier et aujourd&rsquo;hui.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Einstein-sur-France-Culture.html\" class=\"broken_link\">Einstein sur France Culture.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Des-etoiles.html\" class=\"broken_link\">Des \u00e9toiles.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Comment-j-ai-deteste-les-maths-2570.html\" class=\"broken_link\">Comment j&rsquo;ai d\u00e9test\u00e9 les maths.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/+La-theorie-des-espaces-courbes+\" class=\"broken_link\">La th\u00e9orie des espaces courbes.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/+Un-exercice-a-propos-de-la-2766+\" class=\"broken_link\">Un exercice \u00e0 propos de la promotion des math\u00e9matiques.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/+Trois-jours-avec-des-lyceens+\" class=\"broken_link\">Trois jours avec des lyc\u00e9ens japonais.<\/a><\/li>\n<li><a href=\"http:\/\/images-archive.math.cnrs.fr\/Cinq-millions-de-fans-d-IdM-ne\" class=\"broken_link\">Cinq millions de fans d&rsquo;IdM ne peuvent pas avoir tort.<\/a><\/li>\n<\/ul>\n<h4>Divers<\/h4>\n<ul>\n<li>Des syst\u00e8mes dynamiques vers les feuilletages, Images des Math\u00e9matiques 2, \u00e9dition CNRS 1989. <a href=\"https:\/\/perso.ens-lyon.fr\/ghys\/articles\/systemesdynamiquesimages.pdf\">Article pdf<\/a><\/li>\n<li>Variations autour du th\u00e9or\u00e8me de r\u00e9currence de Poincar\u00e9, Journal de Maths des \u00e9l\u00e8ves de l&rsquo;ENS Lyon, vol 1 (1994), repris dans \u00ab\u00a0Lh\u00e9ritage scientifique de Poincar\u00e9\u00a0\u00bb Belin. <a href=\"https:\/\/perso.ens-lyon.fr\/ghys\/articles\/recurrence.pdf\">Article pdf<\/a> <a href=\"https:\/\/perso.ens-lyon.fr\/ghys\/articles\/recurrencePoincare.pdf\">Article.pdf<\/a><\/li>\n<li>Syst\u00e8mes dynamiques : \u00e0 la recherche d\u2019orbites p\u00e9riodiques, Bulletin APMEP, 404 (juin 1996) 363-390. Article pdf<\/li>\n<li>Le th\u00e9or\u00e8me du soufflet, article de vulgarisation, L\u2019explosion des math\u00e9matiques, SMF-SMAI, 2001. <a href=\"https:\/\/perso.ens-lyon.fr\/ghys\/articles\/theoremesouffet.pdf\">Article pdf<\/a> <a href=\"https:\/\/perso.ens-lyon.fr\/ghys\/articles\/theoremesouffletanglais.pdf\">En anglais<\/a> <a href=\"https:\/\/perso.ens-lyon.fr\/ghys\/articles\/theoremesouflletarabe.pdf\">et en arabe<\/a><\/li>\n<li>Les pommes et les poires de Shangai, ENSL info (2005). <a href=\"https:\/\/perso.ens-lyon.fr\/ghys\/articles\/pommespoires.pdf\">Article pdf<\/a><\/li>\n<li>L&rsquo;impact des comptes rendus de l&rsquo;acad\u00e9mie des sciences (2005). <a href=\"https:\/\/perso.ens-lyon.fr\/ghys\/articles\/impactcomptes.pdf\">Article pdf<\/a><\/li>\n<li><a href=\"http:\/\/www.ams.org\/samplings\/feature-column\/fcarc-lorenz\" class=\"broken_link\">Lorenz and modular flow: a visual introduction<\/a>, avec Jos Leys, Feature Column, AMS, Novembre 2006.<\/li>\n<li>La couverture des <a href=\"https:\/\/perso.ens-lyon.fr\/ghys\/wp-content\/uploads\/2016\/01\/Notices\">Notices de l&rsquo;AMS, janvier 2007<\/a>, voir aussi <a href=\"http:\/\/www.ams.org\/notices\/200701\/cass-covtext.pdf\" class=\"broken_link\">About the Cover<\/a>, par B. Casselman. <a href=\"https:\/\/perso.ens-lyon.fr\/ghys\/articles\/notices.pdf\">Article pdf<\/a><\/li>\n<li>L&rsquo;espace math\u00e9matique comme un r\u00e9seau, colloque \u00ab\u00a0l&rsquo;imagination et l&rsquo;intuition dans les sciences\u00a0\u00bb, Acad\u00e9mie Leopoldina et Acad\u00e9mie des Sciences, Paris Octobre 2008, Herman (2009). <a href=\"https:\/\/perso.ens-lyon.fr\/ghys\/articles\/espacemathematique.pdf\">Article pdf<\/a><\/li>\n<li>Qu&rsquo;est-ce qu&rsquo;un bon probl\u00e8me, Pour la Science 2012. <a href=\"https:\/\/perso.ens-lyon.fr\/ghys\/articles\/bon-probleme.pdf\">Article pdf<\/a><\/li>\n<li>G\u00e9om\u00e9triser l&rsquo;espace, de Gauss \u00e0 Poincar\u00e9, Pour la Science 2012. <a href=\"https:\/\/perso.ens-lyon.fr\/ghys\/articles\/poincare.pdf\">Article pdf<\/a><\/li>\n<li>L&rsquo;histoire mouvement\u00e9e des cycles limites, Pour la Science 2012. <a href=\"https:\/\/perso.ens-lyon.fr\/ghys\/articles\/lynx.pdf\">Article pdf<\/a><\/li>\n<li>La beaut\u00e9 des math\u00e9matiques, Emergence du sens de l&rsquo;esth\u00e9tique, sous la direction de Henry de Lumley, CNRS \u00e9ditions 2014. <a href=\"https:\/\/perso.ens-lyon.fr\/ghys\/articles\/Labeautedesmathematiques.pdf\">Article pdf<\/a><\/li>\n<li>Alexandre Grothendieck,<a href=\"https:\/\/perso.ens-lyon.fr\/ghys\/chroniques\/Grotendieck.pdf\"> recension du livre<\/a> de Philippe Douroux dans \u00ab\u00a0la Recherche\u00a0\u00bb (2016).<\/li>\n<li>La coupe des pierres, Discours sous la coupole (2019), <a href=\"https:\/\/perso.ens-lyon.fr\/ghys\/chroniques\/NotreDame.pdf\">texte pdf<\/a>.<\/li>\n<\/ul>\n<h4>Chroniques<\/h4>\n<h5>dans <a href=\"http:\/\/www.lesechos.fr\/\" class=\"broken_link\"> les \u00c9chos :<br \/>\n<\/a><\/h5>\n<ul>\n<li><a href=\"https:\/\/perso.ens-lyon.fr\/ghys\/chroniques\/Faudratilpayer.pdf\">Faudra-t-il payer pour publier<\/a>, novembre 2012.<\/li>\n<li><a href=\"https:\/\/perso.ens-lyon.fr\/ghys\/chroniques\/Laplanetedesmaths.pdf\">La plan\u00e8te des maths<\/a>, janvier 2012.<\/li>\n<li><a href=\"https:\/\/perso.ens-lyon.fr\/ghys\/chroniques\/Dubonenseignement.pdf\">Du bon enseignement des maths<\/a>, mars 2012.<\/li>\n<li><a href=\"https:\/\/perso.ens-lyon.fr\/ghys\/chroniques\/Voulez-vous%20gagner%20250.000%20dollars%20.pdf\">Voulez-vous gagner 250 000 dollars ? <\/a>, juin 2012.<\/li>\n<\/ul>\n<p><strong>dans Humanit\u00e9 Dimanche<\/strong><\/p>\n<ul>\n<li><a href=\"https:\/\/perso.ens-lyon.fr\/ghys\/chroniques\/Humanite-Fevrier2019.pdf\">Quand la g\u00e9om\u00e9trie r\u00e9invente le monde<\/a>, f\u00e9vrier 2019.<\/li>\n<\/ul>\n<h5>dans <a href=\"http:\/\/www.breves-de-maths.fr\" class=\"broken_link\"> Math\u00e9matiques de la Plan\u00e8te Terre :<\/a><\/h5>\n<ul>\n<li><a href=\"http:\/\/www.breves-de-maths.fr\/la-planete-terre-notre-unite-de-mesure\/\" class=\"broken_link\">La Terre, notre unit\u00e9 de mesure<\/a>.<\/li>\n<li><a href=\"http:\/\/www.breves-de-maths.fr\/geoide-ellipsoide-et-autres-mots-compliques\/\" class=\"broken_link\">G\u00e9o\u00efde, ellipso\u00efde et autres mots compliqu\u00e9s<\/a>.<\/li>\n<li><a href=\"http:\/\/www.breves-de-maths.fr\/querelle-franco-anglaise-autour-de-la-forme-de-la-terre\/\" class=\"broken_link\">Querelle franco-anglaise autour de la forme de la Terre<\/a>.<\/li>\n<li><a href=\"http:\/\/www.breves-de-maths.fr\/un-defi-cartographique\/\" class=\"broken_link\">Un d\u00e9fi cartographique<\/a>.<\/li>\n<li><a href=\"http:\/\/www.breves-de-maths.fr\/archimede-et-afrique\/\" class=\"broken_link\">Archim\u00e8de et l&rsquo;Afrique<\/a>.<\/li>\n<li><a href=\"http:\/\/www.breves-de-maths.fr\/des-poires-en-rotation\/\" class=\"broken_link\">Des poires en rotation<\/a> (avec F. Chambat).<\/li>\n<li><a href=\"http:\/\/www.breves-de-maths.fr\/la-carte-du-marchand\/\" class=\"broken_link\">La carte du marchand<\/a> (avec F. Chambat).<\/li>\n<li><a href=\"http:\/\/www.breves-de-maths.fr\/quand-la-mer-monte\/\" class=\"broken_link\">Quand la mer monte<\/a> (avec F. Chambat).<\/li>\n<li><a href=\"http:\/\/www.breves-de-maths.fr\/le-pecheur-de-la-lune\/\" class=\"broken_link\">Le p\u00eacheur de la Lune<\/a> (avec F. Chambat).<\/li>\n<li><a href=\"http:\/\/www.breves-de-maths.fr\/anatomie-dune-figure-fausse\/\" class=\"broken_link\">Anatomie d&rsquo;une figure fausse<\/a> (avec F. Chambat).<\/li>\n<li><a href=\"http:\/\/www.breves-de-maths.fr\/des-triangles-pour-se-reperer-sur-terre\/\" class=\"broken_link\">Des triangles pour se rep\u00e9rer sur la Terre<\/a> (avec F. Chambat).<\/li>\n<li><a href=\"http:\/\/www.breves-de-maths.fr\/de-solides-marees\/\" class=\"broken_link\">De solides mar\u00e9es<\/a> (avec F. Chambat).<\/li>\n<\/ul>\n<div class=\"grammarly-disable-indicator\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Dans Images des Math\u00e9matiques Articles : L&rsquo;effet papillon. G\u00e9om\u00e9triser l&rsquo;espace, de Gauss \u00e0 Perelman. Chercher midi \u00e0 midi et quart. Un cadran solaire digital. Trois-mille deux cent soixante-quatre. Un syst\u00e8me triple orthogonal, avec Jos Leys. La courbe de Menger, avec Jos Leys. Les tables de multiplication. Le pli et la fronce, avec Jos Leys. Le &hellip; <a href=\"https:\/\/perso.ens-lyon.fr\/ghys\/articles-et-billets\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Articles et billets<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","ub_ctt_via":"","_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"episode_type":"","audio_file":"","cover_image":"","cover_image_id":"","duration":"","filesize":"","date_recorded":"","explicit":"","block":"","itunes_episode_number":"","itunes_title":"","itunes_season_number":"","itunes_episode_type":"","filesize_raw":"","footnotes":""},"class_list":["post-438","page","type-page","status-publish","hentry"],"featured_image_src":null,"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Articles et billets - \u00c9tienne Ghys<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/perso.ens-lyon.fr\/ghys\/articles-et-billets\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Articles et billets - \u00c9tienne Ghys\" \/>\n<meta property=\"og:description\" content=\"Dans Images des Math\u00e9matiques Articles : L&rsquo;effet papillon. 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Le\u2026","_links":{"self":[{"href":"https:\/\/perso.ens-lyon.fr\/ghys\/wp-json\/wp\/v2\/pages\/438","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/perso.ens-lyon.fr\/ghys\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/perso.ens-lyon.fr\/ghys\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/perso.ens-lyon.fr\/ghys\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/perso.ens-lyon.fr\/ghys\/wp-json\/wp\/v2\/comments?post=438"}],"version-history":[{"count":54,"href":"https:\/\/perso.ens-lyon.fr\/ghys\/wp-json\/wp\/v2\/pages\/438\/revisions"}],"predecessor-version":[{"id":2656,"href":"https:\/\/perso.ens-lyon.fr\/ghys\/wp-json\/wp\/v2\/pages\/438\/revisions\/2656"}],"wp:attachment":[{"href":"https:\/\/perso.ens-lyon.fr\/ghys\/wp-json\/wp\/v2\/media?parent=438"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}