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PRODID:-//Discrete Mathematics Group - ECPv6.16.2//NONSGML v1.0//EN
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X-WR-CALNAME:Discrete Mathematics Group
X-ORIGINAL-URL:https://dimag.ibs.re.kr
X-WR-CALDESC:Events for Discrete Mathematics Group
REFRESH-INTERVAL;VALUE=DURATION:PT1H
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BEGIN:VTIMEZONE
TZID:Asia/Seoul
BEGIN:STANDARD
TZOFFSETFROM:+0900
TZOFFSETTO:+0900
TZNAME:KST
DTSTART:20250101T000000
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BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20260526T163000
DTEND;TZID=Asia/Seoul:20260526T173000
DTSTAMP:20260525T214455
CREATED:20260112T025344Z
LAST-MODIFIED:20260519T011855Z
UID:12084-1779813000-1779816600@dimag.ibs.re.kr
SUMMARY:Fernanda Rivera Omaña\, Erdős-Pósa theorem for matroids
DESCRIPTION:We will look at an analogue theorem of the classical Erdős-Pósa Theorem. We prove a $GF(q)$-representable matroid analogue of Robertson and Seymour’s theorem that planar graphs have an Erdős-Pósa property. Given a matroid $N$\, we prove that for every matroid $M$ with bounded branch width\, $M$ either contains $r$ skew copies of $N$\, or there is a small perturbation of $M$ that doesn’t contain $N$ as a minor. \nThis is joint work with James Davies and Meike Hatzel.
URL:https://dimag.ibs.re.kr/event/2026-05-26/
LOCATION:Room B332\, IBS (기초과학연구원)
CATEGORIES:Discrete Math Seminar
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