{"id":208,"date":"2011-11-15T12:10:04","date_gmt":"2011-11-15T09:10:04","guid":{"rendered":"http:\/\/blogs.abo.fi\/matematikochstatistik\/?p=208"},"modified":"2011-11-15T12:10:46","modified_gmt":"2011-11-15T09:10:46","slug":"om-erdostal","status":"publish","type":"post","link":"https:\/\/blogs.abo.fi\/matematikochstatistik\/2011\/11\/15\/om-erdostal\/","title":{"rendered":"Om Erd\u00f6stal"},"content":{"rendered":"<p><a href=\"http:\/\/sv.wikipedia.org\/wiki\/Paul_Erd%C5%91s\" target=\"_blank\">Paul Erd\u00f6s <\/a>(1913-1996) var en mycket produktiv ungersk matematiker (talteoretiker). Enligt en uppgift skrev han artiklar tillsammans med totalt 485 olika medf\u00f6rfattare. De h\u00e4r medf\u00f6rfattarna s\u00e4gs ha Erd\u00f6stal 1. De matematiker som har skrivit n\u00e5gonting tillsammans med n\u00e5gon av de 485 medf\u00f6rfattarna s\u00e4gs ha Erd\u00f6stal 2 och s\u00e5 vidare.<\/p>\n<p>H\u00e4r kan man ber\u00e4kna Erd\u00f6stalet f\u00f6r vilken matematiker som helst:<\/p>\n<p><a href=\"http:\/\/www.ams.org\/mathscinet\/collaborationDistance.html\" target=\"_blank\">http:\/\/www.ams.org\/mathscinet\/collaborationDistance.html<\/a><\/p>\n<p>Sj\u00e4lv har jag Erd\u00f6stal 4. M\u00e5nga p\u00e5 insten har mindre Erd\u00f6stal \u00e4n s\u00e5 &#8211; \u00e5tminstone tv\u00e5 personer h\u00e4r har ett Erd\u00f6stal som \u00e4r s\u00e5 l\u00e5gt som 2.<\/p>\n<p>Om man vill l\u00e4sa mer om Paul Erd\u00f6s kan jag rekommendera <em>The Man Who Loved Only Numbers <\/em>av Paul Hoffman:<\/p>\n<p><a href=\"http:\/\/blogs.abo.fi\/matematikochstatistik\/files\/hoffman.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-211\" src=\"http:\/\/blogs.abo.fi\/matematikochstatistik\/files\/hoffman-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/blogs.abo.fi\/matematikochstatistik\/files\/hoffman-300x225.jpg 300w, https:\/\/blogs.abo.fi\/matematikochstatistik\/files\/hoffman.jpg 640w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>Och n\u00e4r man har tr\u00f6ttnat p\u00e5 Erd\u00f6stal kan man roa sig med att ber\u00e4kna samarbetsavst\u00e5ndet mellan vilka tv\u00e5 matematiker som helst via l\u00e4nken ovan. Hur l\u00e5ngt \u00e4r avst\u00e5ndet mellan dig och Einstein? Mellan dig och Gauss?<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Paul Erd\u00f6s (1913-1996) var en mycket produktiv ungersk matematiker (talteoretiker). Enligt en uppgift skrev han artiklar tillsammans med totalt 485 olika medf\u00f6rfattare. De h\u00e4r medf\u00f6rfattarna s\u00e4gs ha Erd\u00f6stal 1. De matematiker som har skrivit n\u00e5gonting tillsammans med n\u00e5gon av de &hellip; <a href=\"https:\/\/blogs.abo.fi\/matematikochstatistik\/2011\/11\/15\/om-erdostal\/\">Forts\u00e4tt l\u00e4sa <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":100,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-208","post","type-post","status-publish","format-standard","hentry","category-okategoriserade"],"_links":{"self":[{"href":"https:\/\/blogs.abo.fi\/matematikochstatistik\/wp-json\/wp\/v2\/posts\/208","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.abo.fi\/matematikochstatistik\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.abo.fi\/matematikochstatistik\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.abo.fi\/matematikochstatistik\/wp-json\/wp\/v2\/users\/100"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.abo.fi\/matematikochstatistik\/wp-json\/wp\/v2\/comments?post=208"}],"version-history":[{"count":7,"href":"https:\/\/blogs.abo.fi\/matematikochstatistik\/wp-json\/wp\/v2\/posts\/208\/revisions"}],"predecessor-version":[{"id":216,"href":"https:\/\/blogs.abo.fi\/matematikochstatistik\/wp-json\/wp\/v2\/posts\/208\/revisions\/216"}],"wp:attachment":[{"href":"https:\/\/blogs.abo.fi\/matematikochstatistik\/wp-json\/wp\/v2\/media?parent=208"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.abo.fi\/matematikochstatistik\/wp-json\/wp\/v2\/categories?post=208"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.abo.fi\/matematikochstatistik\/wp-json\/wp\/v2\/tags?post=208"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}