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X-ORIGINAL-URL:https://ccg.ibs.re.kr
X-WR-CALDESC:Events for Center for Complex Geometry
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BEGIN:VTIMEZONE
TZID:Asia/Seoul
BEGIN:STANDARD
TZOFFSETFROM:+0900
TZOFFSETTO:+0900
TZNAME:KST
DTSTART:20210101T000000
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BEGIN:VEVENT
DTSTART;VALUE=DATE:20220815
DTEND;VALUE=DATE:20230815
DTSTAMP:20260614T062731
CREATED:20220926T052830Z
LAST-MODIFIED:20230119T042344Z
UID:1755-1660521600-1692057599@ccg.ibs.re.kr
SUMMARY:Jinhyun Park (박진현\, KAIST)
DESCRIPTION:Jinhyun Park (박진현) \nVisitor (2022.8.15-2023.8.14) from KAIST\nOffice: B248
URL:https://ccg.ibs.re.kr/event/220815-230814/
CATEGORIES:Visitors
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20220901T110000
DTEND;TZID=Asia/Seoul:20220901T120000
DTSTAMP:20260614T062731
CREATED:20220822T053338Z
LAST-MODIFIED:20220822T065042Z
UID:1673-1662030000-1662033600@ccg.ibs.re.kr
SUMMARY:Guolei Zhong\, Dynamical Characterization of Projective Toric Varieties
DESCRIPTION:     Speaker\n\n\nGuolei Zhong\nIBS-CCG\n\n\n\n\n\nAs a fundamental building block of the equivariant minimal model program\, the rationally connected variety plays a significant role in the classification of projective varieties admitting non-isomorphic endomorphisms. Twenty years ago\, Nakayama confirmed Sato’s conjecture that\, a smooth projective rational surface is toric if and only if it admits a non-isomorphic endomorphism. In this talk\, I will survey some recent progress on a higher dimensional analogue of Nakayama’s result. This talk is based on some joint works with Jia Jia\, Sheng Meng and De-Qi Zhang.
URL:https://ccg.ibs.re.kr/event/2022-09-01/
LOCATION:B266\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20220913T100000
DTEND;TZID=Asia/Seoul:20220913T110000
DTSTAMP:20260614T062731
CREATED:20220824T045059Z
LAST-MODIFIED:20220824T071456Z
UID:1680-1663063200-1663066800@ccg.ibs.re.kr
SUMMARY:Ziquan Zhuang\, Boundedness of Singularities and Minimal Log Discrepancies of Kollár Components
DESCRIPTION:     Speaker\n\n\nZiquan Zhuang\nJohns Hopkins U\n\n\n\n\n\nSeveral years ago\, Chi Li introduced the local volume of a klt singularity in his work on K-stability. The local-global analogy between klt singularities and Fano varieties\, together with recent study in K-stability lead to the conjecture that klt singularities whose local volumes are bounded away from zero are bounded up to special degeneration. In this talk\, I will discuss some recent work on this conjecture through the minimal log discrepancies of Kollár components.
URL:https://ccg.ibs.re.kr/event/2022-09-13/
LOCATION:on-line
CATEGORIES:Algebraic Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20220915T110000
DTEND;TZID=Asia/Seoul:20220915T120000
DTSTAMP:20260614T062731
CREATED:20220822T053515Z
LAST-MODIFIED:20220828T054540Z
UID:1677-1663239600-1663243200@ccg.ibs.re.kr
SUMMARY:Benjamin McMillan\, The Range of the Killing Operator
DESCRIPTION:     Speaker\n\n\nBenjamin McMillan\nIBS-CCG\n\n\n\n\n\n\nThe Killing operator in (semi) Riemannian geometry has well understood kernel: the infinitesimal symmetries of a given metric. At the next level\, the range of the Killing operator can be interpreted as those perturbations of the metric that result from a mere change of coordinates—in contexts like general relativity\, the trivial perturbations. The range of the Killing operator\, albeit important\, has not been as well understood as its kernel. I will describe how one can use the projective nature of the Killing operator to reduce the question to that of the range of a connection on an associated bundle\, and then how one can seek to understand the range of an arbitrary connection. This process yields a fairly complete answer on locally symmetric spaces. \nBased on joint work with Federico Costanza\, Mike Eastwood\, and Thomas Leistner.
URL:https://ccg.ibs.re.kr/event/2022-09-15/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20220921
DTEND;VALUE=DATE:20221021
DTSTAMP:20260614T062731
CREATED:20220926T053633Z
LAST-MODIFIED:20220926T064625Z
UID:1760-1663718400-1666310399@ccg.ibs.re.kr
SUMMARY:Mihai Paun (University of Bayreuth)
DESCRIPTION:Mihai Paun \nVisitor (2022.9.21-2022.10.20) from University of Bayreuth\nOffice: B253
URL:https://ccg.ibs.re.kr/event/mihai-paun-220921-221020/
CATEGORIES:Visitors
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20220927T100000
DTEND;TZID=Asia/Seoul:20220927T110000
DTSTAMP:20260614T062731
CREATED:20220824T045238Z
LAST-MODIFIED:20220913T022712Z
UID:1683-1664272800-1664276400@ccg.ibs.re.kr
SUMMARY:Jakub Witaszek\, Quasi-F-splittings
DESCRIPTION:     Speaker\n\n\nJakub Witaszek\nPrinceton U\n\n\n\n\n\nWhat allowed for many developments in algebraic geometry and commutative algebra was a discovery of the notion of a Frobenius splitting\, which\, briefly speaking\, detects how pathological positive characteristic Fano and Calabi-Yau varieties can be. Recently\, Yobuko introduced a more general concept\, a quasi-F-splitting\, which captures much more refined arithmetic invariants. In my talk\, I will discuss on-going projects in which we develop the theory of quasi-F-splittings in the context of birational geometry and derive applications\, for example\, to liftability of singularities. This is joint work with Tatsuro Kawakami\, Hiromu Tanaka\, Teppei Takamatsu\, Fuetaro Yobuko\, and Shou Yoshikawa.
URL:https://ccg.ibs.re.kr/event/2022-09-27/
LOCATION:on-line
CATEGORIES:Algebraic Geometry Seminar
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