BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Center for Complex Geometry - ECPv6.18.2//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:Center for Complex Geometry
X-ORIGINAL-URL:https://ccg.ibs.re.kr
X-WR-CALDESC:Events for Center for Complex Geometry
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:Asia/Seoul
BEGIN:STANDARD
TZOFFSETFROM:+0900
TZOFFSETTO:+0900
TZNAME:KST
DTSTART:20250101T000000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20261020T110000
DTEND;TZID=Asia/Seoul:20261020T120000
DTSTAMP:20260930T064218Z
CREATED:20260930T063817Z
LAST-MODIFIED:20260930T064218Z
UID:4793-1792494000-1792497600@ccg.ibs.re.kr
SUMMARY:Fundamental forms and infinitesimal symmetries of projective varieties
DESCRIPTION:    Speaker\n\n\nQifeng Li\nShandong University\n\n\n\n\n\n\nThe fundamental form is a basic object for manifolds and varieties. In this talk\, we will give a bound on the dimension of the linear automorphism group of a projective variety $Z \subset \mathbb{P} V$ in terms of its fundamental forms at a general point. Moreover\, we will show that the bound is achieved precisely when $Z \subset \mathbb{P} V$ is projectively equivalent to an Euler-symmetric variety. The applications in the rigidity problem will also be discussed. This talk is based on a joint work with Jun-Muk Hwang.
URL:https://ccg.ibs.re.kr/event/fundamental-forms-and-infinitesimal-symmetries-of-projective-varieties/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20261020T150000
DTEND;TZID=Asia/Seoul:20261020T160000
DTSTAMP:20260930T064512Z
CREATED:20260930T064512Z
LAST-MODIFIED:20260930T064512Z
UID:4795-1792508400-1792512000@ccg.ibs.re.kr
SUMMARY:On isotrivial cone structures of highest weight type
DESCRIPTION:    Speaker\n\n\nYingqi Liu\nIBS CCG\n\n\n\n\n\n\nHwang and Li introduced cone structures with characteristic conic connections\, partially generalizing VMRT structures on uniruled projective manifolds. For isotrivial cone structures with fiber Z\, they established a projective-geometric criterion on Z ensuring the existence of torsion-free connections on the associated G-structures.\nIn this talk\, I will describe a classification of rational homogeneous varieties Z satisfying their criterion and its application to VMRT structures\, generalizing results for adjoint varieties. I will explain how this problem naturally leads to the study of Gaussian maps.
URL:https://ccg.ibs.re.kr/event/on-isotrivial-cone-structures-of-highest-weight-type/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
END:VCALENDAR