{"id":12165,"date":"2019-10-18T10:30:15","date_gmt":"2019-10-18T07:30:15","guid":{"rendered":"https:\/\/w3.bilkent.edu.tr\/en\/?p=12165"},"modified":"2019-10-22T09:31:57","modified_gmt":"2019-10-22T06:31:57","slug":"math-seminar-group-actions-on-homology-3-spheres-ian-hambleton-mcmaster-university-sa-141-140pm-october-21-en","status":"publish","type":"post","link":"https:\/\/w3.bilkent.edu.tr\/en\/math-seminar-group-actions-on-homology-3-spheres-ian-hambleton-mcmaster-university-sa-141-140pm-october-21-en\/","title":{"rendered":"MATH Seminar: &#8220;Group Actions on Homology 3-Spheres,&#8221; Ian Hambleton (McMaster University), SA-141, 1:40PM October 21 (EN)"},"content":{"rendered":"<p>Dear Colleagues and Students,<\/p>\n<p>You are cordially invited to the Topology Seminar organized by the Department of Mathematics.<\/p>\n<p>Speaker: Ian Hambleton (McMaster University)<\/p>\n<p>&#8220;Group actions on homology 3-spheres&#8221;<\/p>\n<p><strong>Abstract:<\/strong> I will discuss finite group actions on integral or rational homology 3-spheres. The main examples for this talk are the Brieskorn integral homology 3-spheres $M(p,q,r)$ arising from isolated singularities, which bound smooth 4-manifolds with definite intersection forms. In addition, there are special infinite families of Brieskorn homology 3-spheres which can be realized as boundaries of smooth contractible 4-manifolds. We ask whether the periodic actions on Brieskorn spheres extend to smooth actions with isolated fixed points on one of these associated 4-manifolds. This is joint work with Nima Anvari.<\/p>\n<p>Date: October 21, 2019<br \/>\nTime: 13:40<br \/>\nPlace: Mathematics Seminar Room, SA \u2013 141<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dear Colleagues and Students, You are cordially invited to the Topology Seminar organized by the Department of Mathematics. Speaker: Ian Hambleton (McMaster University) &#8220;Group actions on homology 3-spheres&#8221; Abstract: I will discuss finite group actions on integral or rational homology 3-spheres. The main examples for this talk are the Brieskorn [\u2026] <\/p>\n<div class=\"clear\"><\/div>\n<p><a class=\"more_link clearfix\" href=\"https:\/\/w3.bilkent.edu.tr\/en\/math-seminar-group-actions-on-homology-3-spheres-ian-hambleton-mcmaster-university-sa-141-140pm-october-21-en\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"class_list":["post-12165","post","type-post","status-publish","format-standard","hentry","category-oldposts"],"_links":{"self":[{"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/posts\/12165","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/comments?post=12165"}],"version-history":[{"count":1,"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/posts\/12165\/revisions"}],"predecessor-version":[{"id":12166,"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/posts\/12165\/revisions\/12166"}],"wp:attachment":[{"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/media?parent=12165"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/categories?post=12165"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/tags?post=12165"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}