{"version":"1.0","provider_name":"Matem\u00e1ticas y sus fronteras","provider_url":"https:\/\/www.madrimasd.org\/blogs\/matematicas","author_name":"Matem\u00e1ticas y sus fronteras","author_url":"https:\/\/www.madrimasd.org\/blogs\/matematicas\/author\/matematicas","title":"Famosos matem\u00e1ticos que nunca existieron II: Arthur Lancelot Besse - Matem\u00e1ticas y sus fronteras","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"ehcpTw5IDm\"><a href=\"https:\/\/www.madrimasd.org\/blogs\/matematicas\/2021\/04\/06\/149012\">Famosos matem\u00e1ticos que nunca existieron II: Arthur Lancelot Besse<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.madrimasd.org\/blogs\/matematicas\/2021\/04\/06\/149012\/embed#?secret=ehcpTw5IDm\" width=\"600\" height=\"338\" title=\"\u00abFamosos matem\u00e1ticos que nunca existieron II: Arthur Lancelot Besse\u00bb \u2014 Matem\u00e1ticas y sus fronteras\" data-secret=\"ehcpTw5IDm\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(c,d){\"use strict\";var e=!1,o=!1;if(d.querySelector)if(c.addEventListener)e=!0;if(c.wp=c.wp||{},c.wp.receiveEmbedMessage);else if(c.wp.receiveEmbedMessage=function(e){var t=e.data;if(!t);else if(!(t.secret||t.message||t.value));else if(\/[^a-zA-Z0-9]\/.test(t.secret));else{for(var r,s,a,i=d.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),n=d.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),o=new RegExp(\"^https?:$\",\"i\"),l=0;l<n.length;l++)n[l].style.display=\"none\";for(l=0;l<i.length;l++)if(r=i[l],e.source!==r.contentWindow);else{if(r.removeAttribute(\"style\"),\"height\"===t.message){if(1e3<(s=parseInt(t.value,10)))s=1e3;else if(~~s<200)s=200;r.height=s}if(\"link\"===t.message)if(s=d.createElement(\"a\"),a=d.createElement(\"a\"),s.href=r.getAttribute(\"src\"),a.href=t.value,!o.test(a.protocol));else if(a.host===s.host)if(d.activeElement===r)c.top.location.href=t.value}}},e)c.addEventListener(\"message\",c.wp.receiveEmbedMessage,!1),d.addEventListener(\"DOMContentLoaded\",t,!1),c.addEventListener(\"load\",t,!1);function t(){if(o);else{o=!0;for(var e,t,r,s=-1!==navigator.appVersion.indexOf(\"MSIE 10\"),a=!!navigator.userAgent.match(\/Trident.*rv:11\\.\/),i=d.querySelectorAll(\"iframe.wp-embedded-content\"),n=0;n<i.length;n++){if(!(r=(t=i[n]).getAttribute(\"data-secret\")))r=Math.random().toString(36).substr(2,10),t.src+=\"#?secret=\"+r,t.setAttribute(\"data-secret\",r);if(s||a)(e=t.cloneNode(!0)).removeAttribute(\"security\"),t.parentNode.replaceChild(e,t);t.contentWindow.postMessage({message:\"ready\",secret:r},\"*\")}}}}(window,document);\n<\/script>\n","description":"En la anterior entrada de Matem\u00e1ticas y sus fronteras recordamos a Nicolas Bourbaki, ese matem\u00e1tico ficticio que surgi\u00f3 en torno a la figura de Andr\u00e9 Weil. Hoy recordamos otro caso similar, tambi\u00e9n originario de Francia, Arthur Besse. Dos de los libros de cabecera para los que nos dedicamos a la geometr\u00eda diferencial y a sus aplicaciones son Manifolds all of whose Geodesics are Closed (1978) y Einstein manifolds (1987), de un matem\u00e1tico llamada Arthur L. Besse (Arthur Lancelot Besse, para ser m\u00e1s precisos). Arthur Besse nace en 1975, con ocasi\u00f3n de una reuni\u00f3n sobre variedades cuyas geod\u00e9sicas son todas cerradas\u2026","thumbnail_url":"http:\/\/www.madrimasd.org\/blogs\/matematicas\/files\/2021\/04\/318-nz5EQeL._SX313_BO1204203200_.jpg"}