BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Center for Complex Geometry - ECPv6.15.20//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:20190101T000000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20210114T160000
DTEND;TZID=Asia/Seoul:20210114T170000
DTSTAMP:20260417T051852
CREATED:20201229T040801Z
LAST-MODIFIED:20210430T041948Z
UID:276-1610640000-1610643600@ccg.ibs.re.kr
SUMMARY:Sangbum Yoo\, Spectral Data for Principal Higgs Bundles over a Singular Curve
DESCRIPTION:     Speaker\n\n\nSangbum Yoo\nGongju National University of Education\n\n\n\n\n\n\nSpectral data for Higgs bundles over a smooth curve has been studied by several mathematicians. The studies in this direction are originated by N.J.Hitchin. Specially\, it has contributed to the studies on the fibers of the Hitchin map. In this talk\, I will introduce spectral data for Higgs bundles over a smooth curve and over a singular curve\, and then present my ongoing project about spectral data for principal Higgs bundles over a singular curve.
URL:https://ccg.ibs.re.kr/event/2021-01-14/
LOCATION:B266\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20201216T160000
DTEND;TZID=Asia/Seoul:20201216T170000
DTSTAMP:20260417T051852
CREATED:20201210T060418Z
LAST-MODIFIED:20210430T042010Z
UID:270-1608134400-1608138000@ccg.ibs.re.kr
SUMMARY:Sung Yeon Kim\, Nonsolvability of Lewy Operator and Non-realizable CR Structures
DESCRIPTION:     Speaker\n\n\nSung Yeon Kim\nIBS\, Center for Complex Geometry
URL:https://ccg.ibs.re.kr/event/2020-12-16/
LOCATION:B266\, IBS\, Korea\, Republic of
CATEGORIES:Several Complex Variables Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20201210T110000
DTEND;TZID=Asia/Seoul:20201210T120000
DTSTAMP:20260417T051852
CREATED:20201203T100951Z
LAST-MODIFIED:20210430T042026Z
UID:262-1607598000-1607601600@ccg.ibs.re.kr
SUMMARY:Minseong Kwon\, Integrability of G-structures III
DESCRIPTION:     Speaker\n\n\nMinseong Kwon\nKAIST\n\n\n\n\n\n\nThis is a working seminar to introduce the notion of an integrable G-structure and its obstruction class. In the previous two talks\, we discussed the definition of the k-th order structure tensor of a G-structure. In the third talk\, we will discuss how the structure tensors can be characterized in terms of classical invariants\, namely the curvature tensor and the torsion tensor of a given connection. The main reference is the paper ‘The Integrability Problem for G-structures’ (1965) written by Victor Guillemin.
URL:https://ccg.ibs.re.kr/event/2020-12-10/
LOCATION:B266\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20201209T160000
DTEND;TZID=Asia/Seoul:20201209T170000
DTSTAMP:20260417T051852
CREATED:20201203T031913Z
LAST-MODIFIED:20210430T042044Z
UID:256-1607529600-1607533200@ccg.ibs.re.kr
SUMMARY:Jihun Yum\, Isometric Embedding of Kähler Manifolds and the Diastatic Function
DESCRIPTION:     Speaker\n\n\nJihun Yum\nIBS\, Center for Complex Geometry
URL:https://ccg.ibs.re.kr/event/2020-12-09/
LOCATION:B266\, IBS\, Korea\, Republic of
CATEGORIES:Several Complex Variables Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20201202T160000
DTEND;TZID=Asia/Seoul:20201202T170000
DTSTAMP:20260417T051852
CREATED:20201126T061653Z
LAST-MODIFIED:20210430T042100Z
UID:240-1606924800-1606928400@ccg.ibs.re.kr
SUMMARY:Nguyen Ngoc Cuong\, Hölder Continuous Solutions to Complex Monge-Ampère Equations and its Applications II
DESCRIPTION:     Speaker\n\n\nNguyen Ngoc Cuong\nKAIST\n\n\n\n\n\nThe Monge-Ampère equations provide Kähler-Einstein metrics on projective manifolds with negative or zero first Chern classes thanks to the AubinYau and Yau theorems. However\, most projective manifolds do not have a negative definite or trivial first Chern class. The study of the canonical metric on these manifolds leads to study degenerate Monge-Ampère equations both on the right hand side and on the background form. It turns out that Hölder continuity is the best regularity we can hope for the solution (quasi-plurisubharmonic potential) to the equation. We discuss situations and criterions such that we will have this property and some applications.\n  \nMore precisely\, let X be a compact Kähler manifold of dimension n and ω a Kähler form on X. We consider the complex Monge-Ampère equation (ddcu+ω)n = µ\, where µ is a given positive measure on X of suitable mass and u is an ω-plurisubharmonic function. We show that the equation admits a Hölder continuous solution if and only if the measure µ\, seen as a functional on a complex Sobolev space W∗(X)\, is Hölder continuous. Here\, denote by W1\,2(X) the Sobolev space of real valued functions f on X such that both f and df are of class L2(X). Then\, the complex Sobolev space W∗(X)\, introduced by Dinh-Sibony\, is the space of all functions f ∈ W1\,2(X) such that\ndf ∧ dcf ≤ T\nfor some closed positive (1\, 1)-current T on X.\n  \nA similar result is also obtained for the complex Monge-Ampère equations on domains of Cn.\n  \nIn the first talk we give motivations and background to study weak solutions of Monge-Ampère equations.\n  \nIn the second talk we focus on the several criterions such that the solution is Hölder continuous\, or alternatively we give the estimate of Hölder norm that depends very weak on the datum such as Lp-norm\, p > 1\, of the right hand sides.\n  \nThis is based on joint work with Tien-Cuong Dinh and Slawomir Ko lodziej.
URL:https://ccg.ibs.re.kr/event/2020-12-02/
LOCATION:B266\, IBS\, Korea\, Republic of
CATEGORIES:Several Complex Variables Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20201126T110000
DTEND;TZID=Asia/Seoul:20201126T120000
DTSTAMP:20260417T051852
CREATED:20201119T170328Z
LAST-MODIFIED:20210430T042126Z
UID:190-1606388400-1606392000@ccg.ibs.re.kr
SUMMARY:Minseong Kwon\, Integrability of G-structures II
DESCRIPTION:     Speaker\n\n\nMinseong Kwon\nKAIST\n\n\n\n\n\nThis is a working seminar to introduce the notion of an integrable G-structure and its obstruction class. In the first talk\, I discussed the definition of an integrable G-structure and introduced the existence theorem for the structure tensor. In this talk\, I will construct the structure tensor of a G-structure\, and then prove that the structure tensor is indeed an obstruction class of the integrability which is lying in the Spencer cohomology group. The main reference is the paper ‘The Integrability Problem for G-structures’ (1965) written by Victor Guillemin.
URL:https://ccg.ibs.re.kr/event/2020-11-26/
LOCATION:B266\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20201119T110000
DTEND;TZID=Asia/Seoul:20201119T120000
DTSTAMP:20260417T051852
CREATED:20201119T170111Z
LAST-MODIFIED:20210430T042143Z
UID:187-1605783600-1605787200@ccg.ibs.re.kr
SUMMARY:Kyeong-Dong Park\, Kähler-Einstein Metrics on Smooth Fano Symmetric Varieties with Picard Number One
DESCRIPTION:     Speaker\n\n\nKyeong-Dong Park\nIBS-CGP\n\n\n\n\n\nSymmetric varieties are normal equivarient open embeddings of symmetric homogeneous spaces and they are interesting examples of spherical varieties. I will prove that all smooth Fano symmetric varieties with Picard number one admit Kähler-Einstein metrics using a combinatorial criterion for K-stability of Fano spherical varieties obtained by Delcroix. To this end\, I will present their algebraic moment polytopes and the barycenter of each moment polytope with respect to the Duistermaat-Heckman measure. This talk is based on joint work with Jae-Hyouk Lee and Sungmin Yoo.
URL:https://ccg.ibs.re.kr/event/2020-11-19/
LOCATION:B266\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20201118T160000
DTEND;TZID=Asia/Seoul:20201118T170000
DTSTAMP:20260417T051852
CREATED:20201119T171313Z
LAST-MODIFIED:20210430T042200Z
UID:201-1605715200-1605718800@ccg.ibs.re.kr
SUMMARY:Jihun Yum\, Classification of Domains that Admit the Bergman-Einstein Metric II
DESCRIPTION:     Speaker\n\n\nJihun Yum\nIBS\, Center for Complex Geometry
URL:https://ccg.ibs.re.kr/event/2020-11-18/
LOCATION:B266\, IBS\, Korea\, Republic of
CATEGORIES:Several Complex Variables Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20201111T160000
DTEND;TZID=Asia/Seoul:20201111T170000
DTSTAMP:20260417T051852
CREATED:20201119T171119Z
LAST-MODIFIED:20210430T042215Z
UID:198-1605110400-1605114000@ccg.ibs.re.kr
SUMMARY:Jihun Yum\, Classification of Domains that Admit the Bergman-Einstein Metric I
DESCRIPTION:     Speaker\n\n\nJihun Yum\nIBS\, Center for Complex Geometry
URL:https://ccg.ibs.re.kr/event/2020-11-11/
LOCATION:B266\, IBS\, Korea\, Republic of
CATEGORIES:Several Complex Variables Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20201110T110000
DTEND;TZID=Asia/Seoul:20201110T120000
DTSTAMP:20260417T051852
CREATED:20201119T165750Z
LAST-MODIFIED:20210430T042257Z
UID:177-1605006000-1605009600@ccg.ibs.re.kr
SUMMARY:Eunjeong Lee\, Geometry of Flag Varieties and Related Combinatorics
DESCRIPTION:     Speaker\n\n\nEnjeong Lee\nIBS-CGP\n\n\n\n\n\nFor a semisimple algebraic group G and a Borel subgroup B\, the homogeneous space G/B\, called the flag variety\, is a smooth projective variety which has a fruitful connection with G-representations. Indeed\, the set of global sections H0(G/B\, L) is an irreducible G-representation for a very ample line bundle L on G/B. On the other hand\, string polytopes are combinatorial objects which encode the characters of irreducible G-representations. One of the most famous examples of string polytopes is the Gelfand–Cetlin polytope\, and there might exist combinatorially different string polytopes. The string polytopes are related to the flag varieties via the theory of Newton–Okounkov bodies. In this talk\, we will study Gelfand–Cetlin type string polytopes\, their enumerations\, and we will present small toric resolutions of certain string polytopes.  This talk is based on several collaborations with Yunhyung Cho\, Jang Soo Kim\, Yoosik Kim\, and Kyeong-Dong Park.
URL:https://ccg.ibs.re.kr/event/2020-11-10/
LOCATION:B266\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20201105T110000
DTEND;TZID=Asia/Seoul:20201105T120000
DTSTAMP:20260417T051852
CREATED:20201030T022314Z
LAST-MODIFIED:20210430T042320Z
UID:109-1604574000-1604577600@ccg.ibs.re.kr
SUMMARY:Insong Choe\, Minimal Rational Curves on the Moduli Spaces of Symplectic and Orthogonal Bundles over a Curve
DESCRIPTION:     Speaker\n\n\nInsong Choe\nKonkuk University\n\n\n\n\n\nLet M be the moduli of vector bundles over a curve of fixed determinant. It is known that the Hecke curves are rational curves of minimal degree on M passing through a general point of M. We prove a similar result for the moduli of symplectic and orthogonal bundles. In particular\, I explain how to construct an analogue of Hecke curves on the symplectic and orthogonal settings\, and how to parameterize them. This is based on a joint work with Kiryong Chung and Sanghyeon Lee.
URL:https://ccg.ibs.re.kr/event/2020-11-05/
LOCATION:B266\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20201104T110000
DTEND;TZID=Asia/Seoul:20201104T120000
DTSTAMP:20260417T051852
CREATED:20201030T022851Z
LAST-MODIFIED:20210430T042338Z
UID:116-1604487600-1604491200@ccg.ibs.re.kr
SUMMARY:Nguyen Ngoc Cuong\, Hölder Continuous Solutions to Complex Monge-Ampère Equations and its Applications
DESCRIPTION:
URL:https://ccg.ibs.re.kr/event/2020-11-04/
LOCATION:B266\, IBS\, Korea\, Republic of
CATEGORIES:Several Complex Variables Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20201028T110000
DTEND;TZID=Asia/Seoul:20201028T120000
DTSTAMP:20260417T051852
CREATED:20201030T022022Z
LAST-MODIFIED:20210430T042355Z
UID:105-1603882800-1603886400@ccg.ibs.re.kr
SUMMARY:Minseong Kwon\, Integrability of G-structures
DESCRIPTION:
URL:https://ccg.ibs.re.kr/event/2020-10-28/
LOCATION:B266\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20201020T110000
DTEND;TZID=Asia/Seoul:20201020T120000
DTSTAMP:20260417T051852
CREATED:20201030T021741Z
LAST-MODIFIED:20210430T042511Z
UID:102-1603191600-1603195200@ccg.ibs.re.kr
SUMMARY:Jun-Muk Hwang\, VMRT of Unbendable Rational Curves Subordinate to Contact Structures
DESCRIPTION:
URL:https://ccg.ibs.re.kr/event/2020-10-20/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20201014T103000
DTEND;TZID=Asia/Seoul:20201014T113000
DTSTAMP:20260417T051852
CREATED:20201030T021444Z
LAST-MODIFIED:20210430T042531Z
UID:99-1602671400-1602675000@ccg.ibs.re.kr
SUMMARY:Sungyeon Kim\, Proper Holomorphic Maps between Bounded Symmetric Domains
DESCRIPTION:
URL:https://ccg.ibs.re.kr/event/2020-10-14/
LOCATION:B236\, IBS\, Korea\, Republic of
CATEGORIES:Several Complex Variables Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20201006T110000
DTEND;TZID=Asia/Seoul:20201006T120000
DTSTAMP:20260417T051853
CREATED:20200925T041044Z
LAST-MODIFIED:20210430T042545Z
UID:93-1601982000-1601985600@ccg.ibs.re.kr
SUMMARY:Hosung Kim\, The Abel-Jacobi Mapping for Fano Threefolds
DESCRIPTION:
URL:https://ccg.ibs.re.kr/event/2020-10-06/
LOCATION:B236\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20200922T110000
DTEND;TZID=Asia/Seoul:20200922T120000
DTSTAMP:20260417T051853
CREATED:20200925T040858Z
LAST-MODIFIED:20210430T042602Z
UID:90-1600772400-1600776000@ccg.ibs.re.kr
SUMMARY:Jaehyun Hong\, Stability of Tangent Bundles of Fano Manifolds
DESCRIPTION:
URL:https://ccg.ibs.re.kr/event/2020-09-22/
LOCATION:B236\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20200915T110000
DTEND;TZID=Asia/Seoul:20200915T120000
DTSTAMP:20260417T051853
CREATED:20200925T040709Z
LAST-MODIFIED:20210430T042618Z
UID:87-1600167600-1600171200@ccg.ibs.re.kr
SUMMARY:Qifeng Li\, Unbendable Rational Curves of Goursat Type
DESCRIPTION:
URL:https://ccg.ibs.re.kr/event/2020-09-15/
LOCATION:B236\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
END:VCALENDAR