{"id":9708,"date":"2017-11-12T18:08:14","date_gmt":"2017-11-12T23:08:14","guid":{"rendered":"http:\/\/www.math.columbia.edu\/~woit\/wordpress\/?p=9708"},"modified":"2017-11-12T18:08:14","modified_gmt":"2017-11-12T23:08:14","slug":"various-stuff-4","status":"publish","type":"post","link":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/?p=9708","title":{"rendered":"Various Stuff"},"content":{"rendered":"<p>A few links that may be of interest.  Mathematics first:<\/p>\n<ul>\n<li>A seminar <a href=\"http:\/\/www.math.ens.fr\/seminaire_G\/\">&#8220;Lectures Grothendieckiennes&#8221;<\/a> on the mathematical ideas of Alexander Grothendieck is taking place this year in Paris, and has just recently started up.<\/li>\n<li>My ex-Columbia colleague Jeff Achter is one of the authors of an unusual new math paper: <a href=\"https:\/\/arxiv.org\/abs\/1710.10726\">Hasse-Witt and Cartier-Manin matrices: A warning and a request<\/a>.  The paper points out that papers of Manin at some points confused an operator and its dual, leading to potential sign errors in later papers that reference Manin&#8217;s results.  I&#8217;m quite sympathetic to the problem, having at various points fallen victim to similar confusions while writing my book (I hope they have all been resolved in the final version, wouldn&#8217;t bet anything really valuable on it&#8230;).<\/li>\n<li>Nature has an excellent <a href=\"https:\/\/www.nature.com\/articles\/d41586-017-05477-9\">obituary of Vladimir Voevodsky<\/a>, written by Dan Grayson.<\/li>\n<\/ul>\n<p>On the physics side:<\/p>\n<ul>\n<li>The LHC has now ended data-taking at 13 TeV for the year (a recent summary is <a href=\"https:\/\/home.cern\/about\/updates\/2017\/10\/lhc-reaches-2017-targets-ahead-schedule\">here<\/a>) and will start up again next spring.  The machine ended up delivering about 50 inverse fb each to CMS\/ATLAS (bettering the goal of 45), of which about 45 was recorded. Results published so far typically use 36 inverse fb from previous year&#8217;s data, so next year we should start seeing results based on a total 13 TeV data set of up to 80 inverse fb.<\/li>\n<li><a href=\"https:\/\/www.nature.com\/news\/dark-matter-hunt-fails-to-find-the-elusive-particles-1.22970\">Still no WIMPs<\/a>.  Frank Wilczek surveys searches for his favorite dark matter alternative <a href=\"http:\/\/frankwilczek.com\/2017\/axion_searches_01.pdf\">here<\/a>.<\/li>\n<li>At <a href=\"http:\/\/bigthink.com\/videos\/eric-weinstein-after-einstein-we-stopped-believing-in-lone-genius-is-it-time-to-believe-again\">Big Think<\/a>, Eric Weinstein has a take on what&#8217;s gone wrong with theoretical physics over the past 40 years that I&#8217;m mostly in agreement with.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>A few links that may be of interest. Mathematics first: A seminar &#8220;Lectures Grothendieckiennes&#8221; on the mathematical ideas of Alexander Grothendieck is taking place this year in Paris, and has just recently started up. My ex-Columbia colleague Jeff Achter is &hellip; <a href=\"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/?p=9708\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-9708","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/9708","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9708"}],"version-history":[{"count":9,"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/9708\/revisions"}],"predecessor-version":[{"id":9736,"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/9708\/revisions\/9736"}],"wp:attachment":[{"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9708"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9708"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.math.columbia.edu\/~woit\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9708"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}