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DTSTART;TZID=Asia/Seoul:20191001T163000
DTEND;TZID=Asia/Seoul:20191001T173000
DTSTAMP:20260422T230922
CREATED:20190916T044737Z
LAST-MODIFIED:20240705T204218Z
UID:1387-1569947400-1569951000@dimag.ibs.re.kr
SUMMARY:Casey Tompkins\, Extremal problems for Berge hypergraphs
DESCRIPTION:Given a graph $G$\, there are several natural hypergraph families one can define. Among the least restrictive is the family $BG$ of so-called Berge copies of the graph $G$. In this talk\, we discuss Turán problems for families $BG$ in $r$-uniform hypergraphs for various graphs $G$. In particular\, we are interested in general results in two settings: the case when $r$ is large and $G$ is any graph where this Turán number is shown to be eventually subquadratic\, as well as the case when $G$ is a tree where several exact results can be obtained. The results in the first part are joint with Grósz and Methuku\, and the second part with Győri\, Salia and Zamora.
URL:https://dimag.ibs.re.kr/event/2019-10-01/
LOCATION:Room B232\, IBS (기초과학연구원)
CATEGORIES:Discrete Math Seminar
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