{"id":521,"date":"2020-11-15T15:22:59","date_gmt":"2020-11-15T15:22:59","guid":{"rendered":"http:\/\/blogs.kent.ac.uk\/pgrseminars\/?p=521"},"modified":"2020-11-15T15:33:33","modified_gmt":"2020-11-15T15:33:33","slug":"counting-paths-in-lattices-to-obtain-symmetric-polynomial-identities-eoghan-mcdowell","status":"publish","type":"post","link":"https:\/\/blogs.kent.ac.uk\/pgrseminars\/2020\/11\/15\/counting-paths-in-lattices-to-obtain-symmetric-polynomial-identities-eoghan-mcdowell\/","title":{"rendered":"Counting paths in lattices to obtain symmetric polynomial identities (Eoghan McDowell 20\/11\/2020)"},"content":{"rendered":"<p>This week, we welcome Eoghan McDowell from Royal Holloway, University of London. He will be speaking on &#8220;Counting paths in lattices to obtain symmetric polynomial identities&#8221;.<\/p>\n<p><strong>Abstract: <\/strong>&#8220;The Lindstr\u00f6m&#8211;Gessel&#8211;Viennot lemma states that the number of non-intersecting tuples of paths in a given lattice is equal to the determinant of a certain matrix. In this talk I will explain the elegant combinatorial argument behind this result, and use it to obtain a new symmetric polynomial identity. This identity generalises both the binomial determinant duality of theorem of Gessel and Viennot and the symmetric function duality theorem of Aitken. I will also mention some motivation from the problem of plethysm in the representation theory of the general linear group.&#8221;<\/p>\n<p>&nbsp;<\/p>\n<p>We look forward to seeing you on teams at 4pm on Friday 20th November for the talk!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This week, we welcome Eoghan McDowell from Royal Holloway, University of London. He will be speaking on &#8220;Counting paths in lattices to obtain symmetric polynomial &hellip; <a href=\"https:\/\/blogs.kent.ac.uk\/pgrseminars\/2020\/11\/15\/counting-paths-in-lattices-to-obtain-symmetric-polynomial-identities-eoghan-mcdowell\/\">Read&nbsp;more<\/a><\/p>\n","protected":false},"author":72429,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[208121],"tags":[],"_links":{"self":[{"href":"https:\/\/blogs.kent.ac.uk\/pgrseminars\/wp-json\/wp\/v2\/posts\/521"}],"collection":[{"href":"https:\/\/blogs.kent.ac.uk\/pgrseminars\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.kent.ac.uk\/pgrseminars\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.kent.ac.uk\/pgrseminars\/wp-json\/wp\/v2\/users\/72429"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.kent.ac.uk\/pgrseminars\/wp-json\/wp\/v2\/comments?post=521"}],"version-history":[{"count":3,"href":"https:\/\/blogs.kent.ac.uk\/pgrseminars\/wp-json\/wp\/v2\/posts\/521\/revisions"}],"predecessor-version":[{"id":529,"href":"https:\/\/blogs.kent.ac.uk\/pgrseminars\/wp-json\/wp\/v2\/posts\/521\/revisions\/529"}],"wp:attachment":[{"href":"https:\/\/blogs.kent.ac.uk\/pgrseminars\/wp-json\/wp\/v2\/media?parent=521"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.kent.ac.uk\/pgrseminars\/wp-json\/wp\/v2\/categories?post=521"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.kent.ac.uk\/pgrseminars\/wp-json\/wp\/v2\/tags?post=521"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}