{"id":998,"date":"2020-10-21T09:00:00","date_gmt":"2020-10-21T07:00:00","guid":{"rendered":"https:\/\/smalltalks.eu\/blog\/?p=998"},"modified":"2026-09-28T13:20:36","modified_gmt":"2026-09-28T11:20:36","slug":"une-enigme-de-50-ans-resolue-le-noeud-de-conway-nest-pas-bordant-micmaths","status":"publish","type":"post","link":"https:\/\/smalltalks.eu\/blog\/2020\/10\/21\/une-enigme-de-50-ans-resolue-le-noeud-de-conway-nest-pas-bordant-micmaths\/","title":{"rendered":"Une \u00e9nigme de 50 ans r\u00e9solue : le n\u0153ud de Conway n&#8217;est pas bordant (Micmaths)"},"content":{"rendered":"\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Une \u00e9nigme de 50 ans r\u00e9solue : le n\u0153ud de Conway n&amp;apos;est pas bordant - Micmaths\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/gz-MN3s-jcQ?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">En f\u00e9vrier 2020, la math\u00e9maticienne Lisa Piccirillo, alors doctorante, a mis fin \u00e0 cinquante ans de suspense en d\u00e9montrant une propri\u00e9t\u00e9 d&#8217;un n\u0153ud d\u00e9couvert par John Conway : il n&#8217;est pas \u00ab bordant \u00bb (<em>slice<\/em>). Micka\u00ebl Launay raconte cette d\u00e9couverte et fait entrer dans la th\u00e9orie des n\u0153uds, avec les illustrations de Chlo\u00e9 Bouchaour.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dans la m\u00eame s\u00e9rie : <a href=\"https:\/\/smalltalks.eu\/blog\/?p=995\">la conjecture de Syracuse<\/a>, <a href=\"https:\/\/smalltalks.eu\/blog\/?p=996\">la d\u00e9couverte qui a transform\u00e9 \u03c0<\/a>, <a href=\"https:\/\/smalltalks.eu\/blog\/?p=997\">le cinqui\u00e8me postulat d&#8217;Euclide<\/a>, <a href=\"https:\/\/smalltalks.eu\/blog\/?p=999\">la commutativit\u00e9<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Vid\u00e9o de Micka\u00ebl Launay (Micmaths).<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>En f\u00e9vrier 2020, la math\u00e9maticienne Lisa Piccirillo, alors doctorante, a mis fin \u00e0 cinquante ans de suspense en d\u00e9montrant une propri\u00e9t\u00e9 d&#8217;un n\u0153ud d\u00e9couvert par John Conway : il n&#8217;est pas \u00ab bordant \u00bb (slice). Micka\u00ebl Launay raconte cette d\u00e9couverte et fait entrer dans la th\u00e9orie des n\u0153uds, avec les illustrations de Chlo\u00e9 Bouchaour. Dans la m\u00eame s\u00e9rie : la conjecture de Syracuse, la d\u00e9couverte qui a transform\u00e9 \u03c0, le cinqui\u00e8me postulat d&#8217;Euclide, la commutativit\u00e9. Vid\u00e9o de Micka\u00ebl Launay (Micmaths).<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[381,280,282],"tags":[],"class_list":["post-998","post","type-post","status-publish","format-standard","hentry","category-micmaths","category-sciences","category-sciences-mathematiques"],"_links":{"self":[{"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/posts\/998","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/comments?post=998"}],"version-history":[{"count":1,"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/posts\/998\/revisions"}],"predecessor-version":[{"id":1020,"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/posts\/998\/revisions\/1020"}],"wp:attachment":[{"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/media?parent=998"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/categories?post=998"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/tags?post=998"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}