{"id":18275,"date":"2010-05-18T17:19:59","date_gmt":"2010-05-18T17:19:59","guid":{"rendered":"http:\/\/euvolution.com\/futurist-transhuman-news-blog\/my-favorite-silly-function-cosmic-variance\/"},"modified":"2010-05-18T17:19:59","modified_gmt":"2010-05-18T17:19:59","slug":"my-favorite-silly-function-cosmic-variance","status":"publish","type":"post","link":"https:\/\/www.euvolution.com\/futurist-transhuman-news-blog\/astronomy\/my-favorite-silly-function-cosmic-variance.php","title":{"rendered":"My Favorite Silly Function | Cosmic Variance"},"content":{"rendered":"<p>In today&rsquo;s <a rel=\"nofollow\" target=\"_blank\" href=\"http:\/\/scienceblogs.com\/principles\/2010\/05\/links_for_2010-05-18.php\">link roundup<\/a>, <a rel=\"nofollow\" target=\"_blank\" href=\"http:\/\/scienceblogs.com\/principles\/\">Uncertain Chad<\/a> points to a new <a rel=\"nofollow\" target=\"_blank\" href=\"http:\/\/dlmf.nist.gov\/\">digital library of mathematical function<\/a>. As a huge, huge fan of <a rel=\"nofollow\" target=\"_blank\" href=\"http:\/\/en.wikipedia.org\/wiki\/Abramowitz_and_Stegun\">Abramowitz &amp; Stegun<\/a> (which can now be <a rel=\"nofollow\" target=\"_blank\" href=\"http:\/\/www.math.ucla.edu\/~cbm\/aands\/\">downloaded as a PDF<\/a>, if you would rather not have it sitting majestically on your shelf), I am thrilled. <\/p><p>Sometimes you&rsquo;ll be happily calculating along, and wind up with an equation you wouldn&rsquo;t want to meet at night in a dark alley. But, a quick flip through Abramowitz &amp; Stegun frequently turns up your nemesis, along with handy tricks for disarming it. Additional satisfaction comes when you write the paper, and get to throw off lines like &ldquo;The solutions to equation 4 are <a rel=\"nofollow\" target=\"_blank\" href=\"http:\/\/dlmf.nist.gov\/13\">confluent hypergeometric functions<\/a> (of the first kind)&rdquo;. <\/p><p>However, it will be hard top my amusement when I once discovered that the solutions to my problem were closely related to <a rel=\"nofollow\" target=\"_blank\" href=\"http:\/\/dlmf.nist.gov\/11.10#E1\"><em>Anger<\/em> functions<\/a>.<\/p><p><img decoding=\"async\" align=\"center\" src=\"http:\/\/euvolution.com\/futurist-transhuman-news-blog\/wp-content\/plugins\/wp-o-matic\/cache\/3e62f_E1.png\" alt=\"anger function\" style=\"padding-left:10px; padding-right: 10px;\"><\/p><p>I can only hope that Dr. Hate and Professor Loathing someday derive equally useful function forms.<\/p><p><a rel=\"nofollow\" target=\"_blank\" href=\"http:\/\/feedads.g.doubleclick.net\/~a\/zST3qfYXQ3pXeD0_v6eMLKPi9As\/0\/da\"><img decoding=\"async\" src=\"http:\/\/euvolution.com\/futurist-transhuman-news-blog\/wp-content\/plugins\/wp-o-matic\/cache\/3e62f_di\" border=\"0\" style=\"padding-left:10px; padding-right: 10px;\"><\/a><br><a rel=\"nofollow\" target=\"_blank\" href=\"http:\/\/feedads.g.doubleclick.net\/~a\/zST3qfYXQ3pXeD0_v6eMLKPi9As\/1\/da\"><img decoding=\"async\" src=\"http:\/\/euvolution.com\/futurist-transhuman-news-blog\/wp-content\/plugins\/wp-o-matic\/cache\/3e62f_di\" border=\"0\" style=\"padding-left:10px; padding-right: 10px;\"><\/a><\/p><p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/euvolution.com\/futurist-transhuman-news-blog\/wp-content\/plugins\/wp-o-matic\/cache\/3e62f_OAOmD696Nbg\" height=\"1\" width=\"1\" style=\"padding-left:10px; padding-right: 10px;\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/euvolution.com\/futurist-transhuman-news-blog\/wp-content\/plugins\/wp-o-matic\/cache\/3e62f_Bb-MXYZEHtY\" height=\"1\" width=\"1\" style=\"padding-left:10px; padding-right: 10px;\"><\/p>","protected":false},"excerpt":{"rendered":"<p>In today&rsquo;s link roundup, Uncertain Chad points to a new digital library of mathematical function. As a huge, huge fan of Abramowitz &amp; Stegun (which can now be downloaded as a PDF, if you would rather not have it sitting &hellip; <a href=\"https:\/\/www.euvolution.com\/futurist-transhuman-news-blog\/astronomy\/my-favorite-silly-function-cosmic-variance.php\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"limit_modified_date":"","last_modified_date":"","_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[21],"tags":[],"class_list":["post-18275","post","type-post","status-publish","format-standard","hentry","category-astronomy"],"modified_by":null,"_links":{"self":[{"href":"https:\/\/www.euvolution.com\/futurist-transhuman-news-blog\/wp-json\/wp\/v2\/posts\/18275"}],"collection":[{"href":"https:\/\/www.euvolution.com\/futurist-transhuman-news-blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.euvolution.com\/futurist-transhuman-news-blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.euvolution.com\/futurist-transhuman-news-blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.euvolution.com\/futurist-transhuman-news-blog\/wp-json\/wp\/v2\/comments?post=18275"}],"version-history":[{"count":0,"href":"https:\/\/www.euvolution.com\/futurist-transhuman-news-blog\/wp-json\/wp\/v2\/posts\/18275\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.euvolution.com\/futurist-transhuman-news-blog\/wp-json\/wp\/v2\/media?parent=18275"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.euvolution.com\/futurist-transhuman-news-blog\/wp-json\/wp\/v2\/categories?post=18275"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.euvolution.com\/futurist-transhuman-news-blog\/wp-json\/wp\/v2\/tags?post=18275"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}