{"id":2728,"date":"2020-07-14T10:59:20","date_gmt":"2020-07-14T14:59:20","guid":{"rendered":"http:\/\/matroidunion.org\/?p=2728"},"modified":"2020-08-24T21:04:49","modified_gmt":"2020-08-25T01:04:49","slug":"online-talk-pascal-gollin","status":"publish","type":"post","link":"https:\/\/matroidunion.org\/?p=2728","title":{"rendered":"Online talk: Pascal Gollin"},"content":{"rendered":"\n<p><strong>Mon, July 20,<\/strong> 3pm ET (8pm BST, 7am Tue NZST)<br \/><a href=\"https:\/\/dimag.ibs.re.kr\/home\/gollin\/\"><strong>Pascal Gollin<\/strong><\/a>, Institute for Basic Science<br \/><strong>Obstructions for bounded branch-depth in matroids<\/strong><br \/><a href=\"https:\/\/youtu.be\/pyc7L8DYVBo\"><strong>Youtube<\/strong><\/a><b><\/b><\/p>\n<p><strong>Abstract:<br \/><\/strong>DeVos, Kwon, and Oum introduced the concept of branch-depth of matroids as a natural analogue of tree-depth of graphs. They conjectured that a matroid of sufficiently large branch-depth contains the uniform matroid $U_{n,2n}$ or the cycle matroid of a large fan graph as a minor. In this talk, I present a proof that matroids of sufficiently large branch-depth either contain the cycle matroid of a large fan graph as a minor or have large branch-width.<br \/><br \/>This is joint work with Kevin Hendrey, Dillon Mayhew and Sang-il Oum.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mon, July 20, 3pm ET (8pm BST, 7am Tue NZST)Pascal Gollin, Institute for Basic ScienceObstructions for bounded branch-depth in matroidsYoutube Abstract:DeVos, Kwon, and Oum introduced the concept of branch-depth of matroids as a natural analogue of tree-depth of graphs. They &hellip; <a href=\"https:\/\/matroidunion.org\/?p=2728\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":19,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[11],"class_list":["post-2728","post","type-post","status-publish","format-standard","hentry","category-matroids","tag-online-talks"],"_links":{"self":[{"href":"https:\/\/matroidunion.org\/index.php?rest_route=\/wp\/v2\/posts\/2728","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/matroidunion.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/matroidunion.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/matroidunion.org\/index.php?rest_route=\/wp\/v2\/users\/19"}],"replies":[{"embeddable":true,"href":"https:\/\/matroidunion.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2728"}],"version-history":[{"count":3,"href":"https:\/\/matroidunion.org\/index.php?rest_route=\/wp\/v2\/posts\/2728\/revisions"}],"predecessor-version":[{"id":2789,"href":"https:\/\/matroidunion.org\/index.php?rest_route=\/wp\/v2\/posts\/2728\/revisions\/2789"}],"wp:attachment":[{"href":"https:\/\/matroidunion.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2728"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/matroidunion.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2728"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/matroidunion.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2728"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}