{"id":956,"date":"2016-10-29T11:02:24","date_gmt":"2016-10-29T09:02:24","guid":{"rendered":"http:\/\/agora.xtec.cat\/cesire_historic\/\/?p=956"},"modified":"2019-03-26T10:52:40","modified_gmt":"2019-03-26T09:52:40","slug":"llull-i-les-matematiques-ii-la-quadratura-del-cercle","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/cesire_historic\/portada\/llull-i-les-matematiques-ii-la-quadratura-del-cercle\/","title":{"rendered":"Llull i les matem\u00e0tiques (II): la quadratura del cercle"},"content":{"rendered":"<p>En l\u2019obra de Llull hi ha certes imatges dotades d\u2019un fort car\u00e0cter simb\u00f2lic que apareixen de forma recurrent en diferents llibres. L\u2019<a href=\"https:\/\/www.google.es\/search?q=arbre+llull&amp;newwindow=1&amp;safe=strict&amp;source=lnms&amp;tbm=isch&amp;sa=X&amp;ved=0ahUKEwiwtubfyPXPAhVDaRQKHd88AVYQ_AUICCgB&amp;biw=1440&amp;bih=731\" target=\"_blank\" rel=\"noopener\">arbre<\/a> o l\u2019<a href=\"http:\/\/www.rutasramonllull.com\/interactivo\/escala_enteniment_cat\/index.html\" target=\"_blank\" rel=\"noopener\">escala<\/a> poden ser dos exemples. Per\u00f2 hi ha una tercera que t\u00e9 un aire m\u00e9s matem\u00e0tic: la <em>figura plena,<\/em> que cont\u00e9 un triangle, un quadrat i un cercle. Deixant de banda les interpretacions teol\u00f2giques o filos\u00f2fiques donades al conjunt de la figura o a cadascuna d\u2019elles per separat (la tripiclitat de l\u2019univers, les tres religions, etc.), la figura apareix comentada geom\u00e8tricament al <em>Liber de geometria nova et compendiosa<\/em> i a <em>De quadratura e triangulatura de cercle<\/em> , totes dues obres de l\u2019any 1299. En elles afirmava que les tres figures tenien la mateixa \u00e0rea, el que implicava que, segons ell, havia aconseguit quadrar i &#8220;triangulitzar&#8221; el cercle. Tal \u00e9s la import\u00e0ncia d\u2019aquesta figura que tamb\u00e9 la trobem gravada al seu sepulcre. L\u2019estudi de la figura plena ens proporciona una interessant activitat d\u2019aula.<\/p>\n<p><a href=\"http:\/\/agora.xtec.cat\/cesire_historic\/\/wp-content\/uploads\/usu397\/2016\/10\/64plenams.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-957\" src=\"http:\/\/agora.xtec.cat\/cesire_historic\/\/wp-content\/uploads\/usu397\/2016\/10\/64plenams.jpg\" alt=\"64plenams\" width=\"218\" height=\"195\" \/><\/a><\/p>\n<ul>\n<li><a href=\"http:\/\/srvcnpbs.xtec.cat\/creamat\/joomla\/index.php\/noticies-\/efemerides\/1566-llull-i-les-matematiques-ii-la-quadratura-del-cercle\" target=\"_blank\" rel=\"noopener\">Enlla\u00e7 a l&#8217;article<\/a><\/li>\n<\/ul>\n<p><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">Save<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>En l\u2019obra de Llull hi ha certes imatges dotades d\u2019un fort car\u00e0cter simb\u00f2lic que apareixen de forma recurrent en diferents llibres. L\u2019<a href=\"https:\/\/www.google.es\/search?q=arbre+llull&amp;newwindow=1&amp;safe=strict&amp;source=lnms&amp;tbm=isch&amp;sa=X&amp;ved=0ahUKEwiwtubfyPXPAhVDaRQKHd88AVYQ_AUICCgB&amp;biw=1440&amp;bih=731\" target=\"_blank\" rel=\"noopener\">arbre<\/a> o l\u2019<a href=\"http:\/\/www.rutasramonllull.com\/interactivo\/escala_enteniment_cat\/index.html\" target=\"_blank\" rel=\"noopener\">escala<\/a> poden ser dos exemples. Per\u00f2 hi ha una tercera que t\u00e9 un aire m\u00e9s matem\u00e0tic:&hellip;  <a href=\"https:\/\/agora.xtec.cat\/cesire_historic\/portada\/llull-i-les-matematiques-ii-la-quadratura-del-cercle\/\" title=\"Read Llull i les matem\u00e0tiques (II): la quadratura del cercle\">Llegeix m\u00e9s\u00bb<\/a><\/p>\n","protected":false},"author":1,"featured_media":957,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[290,293,29],"tags":[363],"class_list":["post-956","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ambits","category-matematic","category-portada","tag-llull"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/cesire_historic\/wp-json\/wp\/v2\/posts\/956","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/cesire_historic\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/cesire_historic\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/cesire_historic\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/cesire_historic\/wp-json\/wp\/v2\/comments?post=956"}],"version-history":[{"count":3,"href":"https:\/\/agora.xtec.cat\/cesire_historic\/wp-json\/wp\/v2\/posts\/956\/revisions"}],"predecessor-version":[{"id":5095,"href":"https:\/\/agora.xtec.cat\/cesire_historic\/wp-json\/wp\/v2\/posts\/956\/revisions\/5095"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/cesire_historic\/wp-json\/wp\/v2\/media\/957"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/cesire_historic\/wp-json\/wp\/v2\/media?parent=956"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/cesire_historic\/wp-json\/wp\/v2\/categories?post=956"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/cesire_historic\/wp-json\/wp\/v2\/tags?post=956"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}