Dear Colleagues and Students,<\/p>\n
You are cordially invited to the Algebra Seminar organized by the Department of Mathematics.<\/p>\n
Speaker: Erg\u00fcn Yal\u00e7\u0131n (Bilkent)<\/p>\n
\u201cObstructions for gluing biset functors II\u201d<\/p>\n
Abstract:<\/strong> Last week we introduced an obstruction theory for the existence and uniqueness of a solution to the gluing problem for a biset functor defined on the sections of a finite group G. Date: Monday, April 8, 2019 Dear Colleagues and Students, You are cordially invited to the Algebra Seminar organized by the Department of Mathematics. Speaker: Erg\u00fcn Yal\u00e7\u0131n (Bilkent) \u201cObstructions for gluing biset functors II\u201d Abstract: Last week we introduced an obstruction theory for the existence and uniqueness of a solution to the gluing problem for a [\u2026] <\/p>\n
\nThe obstruction groups for this theory are the reduced cohomology groups of a category whose objects are the sections (U,V) of G with V not equal to 1, and whose morphisms are defined as a generalization of morphisms in the orbit category. This week we will show how these obstruction groups can be calculated using the work of Jackowski-Slominska on isotropy presheaves, and a theorem of Bob Oliver on the cohomology groups of the Quillen category of a finite group. This is a joint work with Olcay Co\u015fkun.<\/p>\n
\nTime: 10:40
\nPlace: Mathematics Seminar Room, SA \u2013 141<\/p>\n","protected":false},"excerpt":{"rendered":"