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PRODID:-//Center for Complex Geometry - ECPv6.15.20//NONSGML v1.0//EN
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X-WR-CALNAME:Center for Complex Geometry
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:20220101T000000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20240513T143000
DTEND;TZID=Asia/Seoul:20240513T153000
DTSTAMP:20260416T055439
CREATED:20240308T031601Z
LAST-MODIFIED:20240422T004325Z
UID:3009-1715610600-1715614200@ccg.ibs.re.kr
SUMMARY:Hsueh-Yung Lin\, Motivic Invariants of Birational Automorphisms of Threefolds
DESCRIPTION:    Speaker\n\n\nHsueh-Yung Lin\nNational Taiwan University\n\n\n\n\n\n\nThe motivic invariant c(f) of a birational automorphism f : X – → X measures the difference between the birational types of the exceptional divisors of f and those of the inverse f-1. In general c(f) is nonzero: this is the case when f is some Cremona transformation\, which leads to new explanation as to why Cremona groups are not simple. In the other direction\, which will be the main focus of the talk\, we show that the invariant c(f) always vanishes when X is a complex projective threefold. (joint work in progress with E. Shinder.)
URL:https://ccg.ibs.re.kr/event/2024-0513-1430-1530/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Algebraic Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20240508T110000
DTEND;TZID=Asia/Seoul:20240508T120000
DTSTAMP:20260416T055439
CREATED:20240308T031423Z
LAST-MODIFIED:20240308T031423Z
UID:3006-1715166000-1715169600@ccg.ibs.re.kr
SUMMARY:Shigeyuki Kondo\, A Review on Enriques Surfaces: Moduli\, Automorphism Groups and Positive Characteristics\, II
DESCRIPTION:    Speaker\n\n\nShigeyuki Kondo\nNagoya University\n\n\n\n\n\n\nThe Enriques surface was discovered\, in 1894 by Federigo Enriques\, as a counter-example of a rationality problem.\nFirst I would like to recall the moduli space and the automorphism groups of Enriques surfaces over the complex numbers.\nIn the later half\, I shall mention a recent progress in positive characteristic\, especially in characteristic two.
URL:https://ccg.ibs.re.kr/event/2024-0508/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Algebraic Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20240507T160000
DTEND;TZID=Asia/Seoul:20240507T170000
DTSTAMP:20260416T055439
CREATED:20240308T031240Z
LAST-MODIFIED:20240308T031240Z
UID:3004-1715097600-1715101200@ccg.ibs.re.kr
SUMMARY:Shigeyuki Kondo\, A Review on Enriques Surfaces: Moduli\, Automorphism Groups and Positive Characteristics\, I
DESCRIPTION:    Speaker\n\n\nShigeyuki Kondo\nNagoya University\n\n\n\n\n\n\nThe Enriques surface was discovered\, in 1894 by Federigo Enriques\, as a counter-example of a rationality problem.\nFirst I would like to recall the moduli space and the automorphism groups of Enriques surfaces over the complex numbers.\nIn the later half\, I shall mention a recent progress in positive characteristic\, especially in characteristic two.
URL:https://ccg.ibs.re.kr/event/2024-0507/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Algebraic Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20240430T160000
DTEND;TZID=Asia/Seoul:20240430T170000
DTSTAMP:20260416T055439
CREATED:20240325T121305Z
LAST-MODIFIED:20240325T121305Z
UID:3053-1714492800-1714496400@ccg.ibs.re.kr
SUMMARY:Benjamin Bakker\, A Proof of Matsushita's Conjecture
DESCRIPTION:    Speaker\n\n\nBenjamin Bakker\nUniv. Illinois Chicago\n\n\n\n\n\n\nMatsushita conjectured that for any Lagrangian fibration f:X→B of a compact hyperkahler manifold X\, the fibers deform either maximally or trivially in moduli. In this talk I’ll explain how to prove this conjecture via Hodge theory. I will also discuss some other features of the topology of Lagrangian fibrations and a result about the density of torsion points in sections. Time permitting\, I will discuss some more recent work with C. Schnell from this perspective reproving a result of J.-M. Hwang that B is projective space if it is smooth.
URL:https://ccg.ibs.re.kr/event/2024-0430/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20240429T160000
DTEND;TZID=Asia/Seoul:20240429T170000
DTSTAMP:20260416T055439
CREATED:20240325T120910Z
LAST-MODIFIED:20240325T120910Z
UID:3050-1714406400-1714410000@ccg.ibs.re.kr
SUMMARY:Benjamin Bakker\, Hodge Theory and Lagrangian Fibrations
DESCRIPTION:    Speaker\n\n\nBenjamin Bakker\nUniv. Illinois Chicago\n\n\n\n\n\n\nCompact hyperkahler manifolds X are higher-dimensional generalizations of K3 surfaces; their geometry is tightly constrained by the existence of a holomorphic symplectic form. For example\, a result of Matsushita says the only nontrivial fibration structures f:X→B they admit are fibrations by Lagrangian tori. In this talk\, I will give an overview of how Hodge theory connects the geometry of B to the variation of these tori in moduli\, and how Hodge-theoretic techniques can be used to understand B both locally and globally.
URL:https://ccg.ibs.re.kr/event/2024-0429/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20240426T110000
DTEND;TZID=Asia/Seoul:20240426T120000
DTSTAMP:20260416T055439
CREATED:20240229T044508Z
LAST-MODIFIED:20240311T002552Z
UID:2971-1714129200-1714132800@ccg.ibs.re.kr
SUMMARY:Chuyu Zhou\, Wall Crossing for K-stability
DESCRIPTION:    Speaker\n\n\nChuyu Zhou\nYonsei University\n\n\n\n\n\n\nWe will introduce a novel characteristic of K-stability\, i.e. wall crossing phenomenon\, and present a comparison between K-stability and GIT-stability. Time permitting\, we will survey some open problems.
URL:https://ccg.ibs.re.kr/event/2024-0426/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20240425T110000
DTEND;TZID=Asia/Seoul:20240425T120000
DTSTAMP:20260416T055439
CREATED:20240229T044415Z
LAST-MODIFIED:20240311T002511Z
UID:2969-1714042800-1714046400@ccg.ibs.re.kr
SUMMARY:Chuyu Zhou\, Moduli for Fano Varieties with K-stability
DESCRIPTION:    Speaker\n\n\nChuyu Zhou\nYonsei University\n\n\n\n\n\n\nWe will present the construction of moduli space of Fano varieties with K-stability\, including defining the moduli functor\, showing various good properties of the functor\, and introducing Alper-Halpern Leistner-Heinloth criterion for the existence of good moduli space.
URL:https://ccg.ibs.re.kr/event/2024-0425/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20240424T110000
DTEND;TZID=Asia/Seoul:20240424T120000
DTSTAMP:20260416T055439
CREATED:20240229T044246Z
LAST-MODIFIED:20240311T002339Z
UID:2966-1713956400-1713960000@ccg.ibs.re.kr
SUMMARY:Chuyu Zhou\, K-stability of Fano Varieties - Various Viewpoints
DESCRIPTION:    Speaker\n\n\nChuyu Zhou\nYonsei University\n\n\n\n\n\n\nWe will present various criterion for K-stability for Fano varieties\, including viewpoints from test configurations\, valuations\, and filtrations.
URL:https://ccg.ibs.re.kr/event/2024-0424/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20240423T140000
DTEND;TZID=Asia/Seoul:20240423T150000
DTSTAMP:20260416T055439
CREATED:20240229T044128Z
LAST-MODIFIED:20240411T030725Z
UID:2964-1713880800-1713884400@ccg.ibs.re.kr
SUMMARY:In-Kyun Kim\, Wall-crossing of K-moduli Spaces of Weighted Projective Spaces
DESCRIPTION:    Speaker\n\n\nIn-Kyun Kim\nKIAS\n\n\n\n\n\n\nIn algebraic geometry\, constructing moduli spaces that parametrize families of algebraic varieties with certain properties is an important problem.  \nIn the case of Fano varieties\, the construction of moduli spaces is a challenging problem.  \nK-stability provides a criterion for selecting nice representatives within the moduli space\, which helps create more meaningful and well-behaved moduli spaces.  \nIn this talk\, we will study some properties of K-moduli spaces. This is a joint work with Yuchen Liu and Chengxi Wang.
URL:https://ccg.ibs.re.kr/event/2024-0423/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20240415
DTEND;VALUE=DATE:20240419
DTSTAMP:20260416T055439
CREATED:20240105T035350Z
LAST-MODIFIED:20240417T043737Z
UID:2862-1713139200-1713484799@ccg.ibs.re.kr
SUMMARY:Workshop on Geometry of Homogeneous Varieties
DESCRIPTION:Speakers\nMichel Brion (U. Grenoble)\nJarek Buczynski (IMPAN\, Warsaw)\nThibaut Delcroix (U. Montpellier)\nMinseong Kwon (KAIST/IBS-CCG)\nQifeng Li (Shandong U.)\nYoshinori Namikawa (RIMS\, Kyoto)\nKyeong-Dong Park (Gyeongsang National U.)\nBoris Pasquier (U. Poitiers)\nLéa Villeneuve (U. Poitiers) \nAbstracts\nPDF file \nSchedule\nApril 15 (Monday) \n10:00-11:00 Brion\n11:20-12:20 Brion\n12:30-13:20 Lunch\n15:00-16:00 Kwon\n16:20-17:40 Li \nApril 16 (Tuesday) \n10:00-11:00 Pasquier\n11:20-12:20 Pasquier\n12:30-13:20 Lunch\n15:00-16:00 Park\n16:20-17:40 Villeneuve \nApril 17 (Wednesday) \n10:00-11:00 Namikawa\n11:20-12:20 Namikawa\n12:30-13:20 Lunch\nFree Afternoon \nApril 18 (Thursday) \n10:00-11:00 Delcroix\n11:20-12:20 Delcroix\n12:30-13:20 Lunch\n15:00-16:00 Buczynski\n16:20-17:20 Buczynski \nOrganizers\nJaehyun Hong (IBS-CCG)\nJun-Muk Hwang (IBS-CCG) \nMain Hotel\nLotte City Hotel Daejeon (4-30 Doryong-dong\, Yuseong-gu\, Daejeon) \nVenue\nB109\, IBS\, Daejeon\, Korea \nRegistration\nPlease submit Google form by March 31. \nMore Information\n• How to get to IBS-CCG
URL:https://ccg.ibs.re.kr/event/2024-04-15-18/
LOCATION:B109\, IBS\, Korea\, Republic of
CATEGORIES:Conferences and Workshops
ATTACH;FMTTYPE=image/jpeg:https://ccg.ibs.re.kr/wp-content/uploads/2024/04/2024-Workshop-on-Geometry-of-Homogeneous-Varieties_Group-photo1-scaled.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20240411T160000
DTEND;TZID=Asia/Seoul:20240411T170000
DTSTAMP:20260416T055439
CREATED:20240229T055639Z
LAST-MODIFIED:20240229T055639Z
UID:2978-1712851200-1712854800@ccg.ibs.re.kr
SUMMARY:Michel Brion\, Introduction to Complete Symmetric Varieties
DESCRIPTION:    Speaker\n\n\nMichel Brion\nU. Grenoble\n\n\n\n\n\n\nThis is an introductory lecture on compactifications of symmetric spaces in algebraic geometry.
URL:https://ccg.ibs.re.kr/event/2024-0411/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20240409T160000
DTEND;TZID=Asia/Seoul:20240409T170000
DTSTAMP:20260416T055439
CREATED:20240229T055532Z
LAST-MODIFIED:20240229T055532Z
UID:2976-1712678400-1712682000@ccg.ibs.re.kr
SUMMARY:Michel Brion\, Introduction to Symmetric Spaces
DESCRIPTION:    Speaker\n\n\nMichel Brion\nU. Grenoble\n\n\n\n\n\n\nThis is an introductory lecture on symmetric spaces in algebraic geometry.
URL:https://ccg.ibs.re.kr/event/2024-0409/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20240326T160000
DTEND;TZID=Asia/Seoul:20240326T170000
DTSTAMP:20260416T055439
CREATED:20240215T131230Z
LAST-MODIFIED:20240215T131230Z
UID:2948-1711468800-1711472400@ccg.ibs.re.kr
SUMMARY:Yong Hu\, Noether Inequality for Irregular Threefolds of General Type
DESCRIPTION:    Speaker\n\n\nYong Hu\nShanghai Jiao Tong University\n\n\n\n\n\n\nLet X be a smooth irregular 3-fold of general type. In this talk\, we will prove that the optimal Noether inequality vol(X) ≥ (4/3) pg(X) holds if pg(X) ≥ 16 or if X has a Gorenstein minimal model. Moreover\, when X attains the equality and pg(X) ≥ 16\, its canonical model will be explicitly described. This is a joint work with Tong Zhang.
URL:https://ccg.ibs.re.kr/event/2024-0326/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Algebraic Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20240321T160000
DTEND;TZID=Asia/Seoul:20240321T170000
DTSTAMP:20260416T055439
CREATED:20240214T055456Z
LAST-MODIFIED:20240226T054513Z
UID:2942-1711036800-1711040400@ccg.ibs.re.kr
SUMMARY:Dennis The\, On 4D Split-conformal Structures with G2-symmetric Twistor Distribution
DESCRIPTION:    Speaker\n\n\nDennis The\nThe Artic University of Norway\, Tromso\n\n\n\n\n\n\nIn their 2013 article\, An & Nurowski considered two surfaces rolling on each other without twisting or slipping\, and defined a twistor distribution (on the space of all real totally null self-dual 2-planes) for the associated 4D split-signature conformal structure. If this split-conformal structure is not anti-self dual\, then the twistor distribution is a (2\,3\,5)-distribution\, and An-Nurowski identified interesting rolling examples where it achieves maximal\, i.e. G2\, symmetry. Relaxing the rolling assumption\, a similar construction can be made for any 4D split-conformal structure\, and my talk will discuss a broader classification of examples where such exceptional symmetry for the twistor distribution is achieved. (Joint work with Pawel Nurowski & Katja Sagerschnig.)
URL:https://ccg.ibs.re.kr/event/2024-0321/
LOCATION:B266\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20240319T160000
DTEND;TZID=Asia/Seoul:20240319T170000
DTSTAMP:20260416T055439
CREATED:20240214T055224Z
LAST-MODIFIED:20240226T054451Z
UID:2940-1710864000-1710867600@ccg.ibs.re.kr
SUMMARY:Boris Doubrov\, Bifiltered Parabolic Geometries
DESCRIPTION:    Speaker\n\n\nBoris Doubrov\nBelarusian State University\, Minsk\n\n\n\n\n\n\nWe introduce the notion of a bifiltered manifold and generalizing the constructions of the symbol and Tanaka prolongation from nilpotent differential geometry. Next\, we consider bifiltered manifolds modeled by bigradings of simple Lie algebras and show how this generalizes known constructions in the parabolic geometries such as existence of a unique normal Cartan connection. Finally\, we show how the language of bifiltered manifolds can be used for uniform treatment of correspondence spaces in parabolic geometries\, where the covering space is not necessarily regular in the classical sense.
URL:https://ccg.ibs.re.kr/event/2024-0319/
LOCATION:B266\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20240314T153000
DTEND;TZID=Asia/Seoul:20240314T163000
DTSTAMP:20260416T055439
CREATED:20240305T053241Z
LAST-MODIFIED:20240305T053241Z
UID:2995-1710430200-1710433800@ccg.ibs.re.kr
SUMMARY:Gebhard Martin\, Automorphisms of del Pezzo Surfaces III
DESCRIPTION:    Speaker\n\n\nGebhard Martin\nUniversität Bonn\n\n\n\n\n\n\nMotivated by the classification of finite subgroups of the Cremona group of the plane\, I will survey old and new results on automorphism groups of del Pezzo surfaces. In particular\, I will report on joint work with Igor Dolgachev on the classification of automorphism groups of smooth del Pezzo surfaces and on joint work with Claudia Stadlmayr on the classification of vector fields on mildly singular del Pezzo surfaces. Special emphasis will be placed on the theory of actions of infinitesimal group schemes and characteristic-free methods in classical algebraic geometry.
URL:https://ccg.ibs.re.kr/event/2024-0314/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Algebraic Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20240312T160000
DTEND;TZID=Asia/Seoul:20240312T170000
DTSTAMP:20260416T055439
CREATED:20240305T053102Z
LAST-MODIFIED:20240305T053319Z
UID:2992-1710259200-1710262800@ccg.ibs.re.kr
SUMMARY:Gebhard Martin\, Automorphisms of del Pezzo Surfaces II
DESCRIPTION:    Speaker\n\n\nGebhard Martin\nUniversität Bonn\n\n\n\n\n\n\nMotivated by the classification of finite subgroups of the Cremona group of the plane\, I will survey old and new results on automorphism groups of del Pezzo surfaces. In particular\, I will report on joint work with Igor Dolgachev on the classification of automorphism groups of smooth del Pezzo surfaces and on joint work with Claudia Stadlmayr on the classification of vector fields on mildly singular del Pezzo surfaces. Special emphasis will be placed on the theory of actions of infinitesimal group schemes and characteristic-free methods in classical algebraic geometry.
URL:https://ccg.ibs.re.kr/event/2024-0312/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Algebraic Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20240307T153000
DTEND;TZID=Asia/Seoul:20240307T163000
DTSTAMP:20260416T055439
CREATED:20240305T053732Z
LAST-MODIFIED:20240305T053838Z
UID:2998-1709825400-1709829000@ccg.ibs.re.kr
SUMMARY:Claudia Stadlmayr\, Which Rational Double Points Occur on del Pezzo Surfaces?
DESCRIPTION:    Speaker\n\n\nClaudia Stadlmayr\nTechnische Universität München\n\n\n\n\n\n\nCanonical surface singularities\, also called rational double points (RDPs)\, can be classified according to their dual resolution graphs\, which are Dynkin diagrams of types A\, D\, and E. Whereas in characteristic different from 2\, 3\, and 5\, rational double points are “taut”\, that is\, they are uniquely determined by their dual resolution graph\, this is not necessarily the case in small characteristics. To such non-taut RDPs Artin assigned a coindex distinguishing the ones with the same resolution graph in terms of their deformation theory. In 1934\, Du Val determined all configurations of rational double points that can appear on complex RDP del Pezzo surfaces. In order to extend Du Val’s work to positive characteristic\, one has to determine the Artin coindices to distinguish the non-taut rational double points that occur. In this talk\, I will explain how to answer the question “Which rational double points (and configurations of them) occur on del Pezzo surfaces?” for all RDP del Pezzo surfaces in all characteristics. This will be done by first reducing the problem to degree 1 and then exploiting the connection to (Weierstraß models of) rational (quasi-)elliptic surfaces.
URL:https://ccg.ibs.re.kr/event/2024-0307/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Algebraic Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20240305T110000
DTEND;TZID=Asia/Seoul:20240305T120000
DTSTAMP:20260416T055439
CREATED:20240305T052956Z
LAST-MODIFIED:20240305T052956Z
UID:2990-1709636400-1709640000@ccg.ibs.re.kr
SUMMARY:Gebhard Martin\, Automorphisms of del Pezzo Surfaces I
DESCRIPTION:    Speaker\n\n\nGebhard Martin\nUniversität Bonn\n\n\n\n\n\n\nMotivated by the classification of finite subgroups of the Cremona group of the plane\, I will survey old and new results on automorphism groups of del Pezzo surfaces. In particular\, I will report on joint work with Igor Dolgachev on the classification of automorphism groups of smooth del Pezzo surfaces and on joint work with Claudia Stadlmayr on the classification of vector fields on mildly singular del Pezzo surfaces. Special emphasis will be placed on the theory of actions of infinitesimal group schemes and characteristic-free methods in classical algebraic geometry.
URL:https://ccg.ibs.re.kr/event/2024-0305/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Algebraic Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20240221
DTEND;VALUE=DATE:20240301
DTSTAMP:20260416T055439
CREATED:20230816T045622Z
LAST-MODIFIED:20240304T114415Z
UID:2486-1708473600-1709251199@ccg.ibs.re.kr
SUMMARY:School and Workshop on Moduli\, K-trivial Varieties\, and Related Topics
DESCRIPTION:Speakers for Mini-courses (Feb 21~23)\nHarold Blum (University of Utah)\nRadu Laza (Stony Brook University)\nColleen Robles (Duke University) \nSpeakers for Workshop (Feb 21~23\, and 26-29)\nKenneth Ascher (UC Irvine)\nPhilip Engel (Univ. of Bonn)\nLaure Flapan (Michigan State University)\nYoon-Joo Kim (Columbia University)\nKyoung-Seog Lee (POSTECH)\nZhiyuan Li (SCMS\, Fudan University)\nYuchen Liu (Northwestern University)\nEyal Markman (University of Massachusetts)\nMirko Mauri (École Polytechnique)\nEnrica Mazzon (University of Regensburg)\nYuji Odaka (Kyoto University)\nKieran O’Grady (University of Rome\, La Sapienza)\nKeiji Oguiso (University of Tokyo)\nGianluca Pacienza (University of Lorraine)\nColleen Robles (Duke University)\nJustin Sawon (University of North Carolina)\nQizheng Yin (BICMR\, Peking University) \nAbstracts\n• School \n• Workshop \nSchedule (School and Workshop)\n* Additional talk (online) by Caucher Birkar (Tsinghua U.) at 17:00-18:00 in February 20 (Tue)\n(Zoom ID and PW can be found here.) \nFebruary 21 (Wednesday) \n\n\n\n09:30~10:00\nRegistration\n\n\n10:00~11:00\nRadu Laza\, Lect I\n\n\n11:00~11:30\nCoffee Break\n\n\n11:30~12:30\nColleen Robles\, Lect I\n\n\n12:30~14:30\nLunch\n\n\n14:30~15:30\nHarold Blum\, Lect I\n\n\n15:30~16:00\nCoffee Break\n\n\n16:00~17:00\nKeiji Oguiso\n\n\n17:30~19:30\nDinner (for speakers)\n\n\n\n  \nFebruary 22 (Thursday) \n\n\n\n10:00~11:00\nRadu Laza\, Lect II\n\n\n11:00~11:30\nCoffee Break\n\n\n11:30~12:30\nColleen Robles\, Lect II\n\n\n12:30~14:30\nLunch\n\n\n14:30~15:30\nHarold Blum\, Lect II\n\n\n15:30~16:00\nCoffee Break\n\n\n16:00~17:00\nYuji Odaka\n\n\n17:30~19:30\nBanquet\n\n\n\n  \nFebruary 23 (Friday) \n\n\n\n10:00~11:00\nRadu Laza\, Lect III\n\n\n11:00~11:30\nCoffee Break\n\n\n11:30~12:30\nColleen Robles\, Lect III\n\n\n12:30~14:30\nLunch\n\n\n14:30~15:30\nHarold Blum\, Lect III\n\n\n15:30~16:00\nCoffee Break\n\n\n16:00~17:00\nKyeong-Seog Lee\n\n\n18:00~20:00\nDinner (for speakers)\n\n\n\n  \nFebruary 26 (Monday) \n\n\n\n9:30~10:00\nRegistration\n\n\n10:00~11:00\nKieran O’Grady\n\n\n11:00~11:30\nCoffee Break\n\n\n11:30~12:30\nPhilip Engel\n\n\n12:30~14:30\nLunch\n\n\n14:30~15:30\nEnrica Mazzon\n\n\n15:30~16:00\nCoffee Break\n\n\n16:00~17:00\nYoon-Joo Kim\n\n\n17:30~19:30\nDinner (for speakers)\n\n\n\n  \nFebruary 27 (Tuesday) \n\n\n\n10:00~11:00\nGianluca Pacienza\n\n\n11:00~11:30\nCoffee Break\n\n\n11:30~12:30\nLaure Flapan\n\n\n12:30~14:30\nLunch\n\n\n14:30~15:30\nKenneth Ascher\n\n\n15:30~16:00\nCoffee Break\n\n\n16:00~17:00\nYuchen Liu\n\n\n\n  \nFebruary 28 (Wednesday) \n\n\n\n10:00~11:00\nJustin Sawon\n\n\n11:00~11:30\nCoffee Break\n\n\n11:30~12:30\nQizheng Yin\n\n\n12:30~14:30\nLunch\n\n\n14:30~15:30\nColleen Robles\n\n\n15:30~16:00\nCoffee Break\n\n\n16:00~17:00\nMirko Mauri\n\n\n17:30~19:30\nBanquet\n\n\n\n  \nFebruary 29 (Thursday) \n\n\n\n10:00~11:00\nZhiyuan Li\n\n\n11:00~11:30\nCoffee Break\n\n\n11:30~12:30\nEyal Markman\n\n\n12:30~14:30\nLunch\n\n\n\nOrganizers\nJun-Muk Hwang (IBS-CCG)\nRadu Laza (Stony Brook University)\nYongnam Lee (IBS-CCG/KAIST) \nMain Hotel\nLotte City Hotel Daejeon (4-30 Doryong-dong\, Yuseong-gu\, Daejeon) \nVenue\nIBS Science Culture Center \nRegistration\nPlease submit Google form by February 7. \nMore Information\n• How to get to IBS-CCG
URL:https://ccg.ibs.re.kr/event/2024-02-21-29/
LOCATION:IBS Science Culture Center Daejeon\, Korea\, Republic of (On Feb 23\, the venue will be in B109\, IBS)
CATEGORIES:Conferences and Workshops
ATTACH;FMTTYPE=image/jpeg:https://ccg.ibs.re.kr/wp-content/uploads/2024/03/20240222_photo-scaled.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20240220T170000
DTEND;TZID=Asia/Seoul:20240220T180000
DTSTAMP:20260416T055439
CREATED:20240130T002012Z
LAST-MODIFIED:20240130T002012Z
UID:2908-1708448400-1708452000@ccg.ibs.re.kr
SUMMARY:Caucher Birkar\, Stable Minimal Models
DESCRIPTION:Zoom ID: 880 6763 5837\nPW: 312515 \n\n    Speaker\n\n\nCaucher Birkar\nTsinghua University\n\n\n\n\n\n\nIn this talk I will introduce stable minimal models and discuss some related results and if times allows\, problems. \n(This seminar is a part of School and Workshop on Moduli\, K-trivial Varieties\, and Related Topics)
URL:https://ccg.ibs.re.kr/event/2024-02-20/
LOCATION:on-line
CATEGORIES:Algebraic Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20240207T160000
DTEND;TZID=Asia/Seoul:20240207T170000
DTSTAMP:20260416T055439
CREATED:20240104T115944Z
LAST-MODIFIED:20240203T110134Z
UID:2859-1707321600-1707325200@ccg.ibs.re.kr
SUMMARY:Youngju Kim\, Tubular Neighborhoods in Complex Hyperbolic Manifolds
DESCRIPTION:    Speaker\n\n\nYoungju Kim\nKonkuk University\n\n\n\n\n\n\nThe collar lemma says that a closed geodesic in a real hyperbolic 2-manifold has an embedded tubular neighborhood whose width only depends on the length of the geodesic. The width of the collar does not depend on the underlying hyperbolic 2-manifold. On the other hand\, a totally geodesic surface with codimension bigger than 1 in a hyperbolic manifold of can be arbitrary closed to itself. Here\, we prove that an embedded complex totally geodesic surface in a complex hyperbolic 2-manifold has a tubular neighborhood whose size depends only on its area. This is a joint work with A. Basmajian.
URL:https://ccg.ibs.re.kr/event/2024-02-07/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20240115
DTEND;VALUE=DATE:20240120
DTSTAMP:20260416T055439
CREATED:20230909T052951Z
LAST-MODIFIED:20240121T235022Z
UID:2517-1705276800-1705708799@ccg.ibs.re.kr
SUMMARY:Workshop on Torus Actions in Symplectic and Algebraic Geometry
DESCRIPTION:Lecture Series\nKiumars Kaveh (University of Pittsburgh)\nHendrik Süß (University of Jena)*\nSusan Tolman (University of Illinois at Urbana-Champaign) \nResearch Talks\nLara Bossinger (UNAM)\nIsabelle Charton (University of Haifa)\nOliver Clarke (University of Edinburgh)\nPeter Crooks (Utah State University)\nNaoki Fujita (Kumamoto University)\nYoosik Kim (Pusan National University)\nDonggun Lee (IBS CCG)\nJoseph Palmer (University of Illinois at Urbana-Champaign)\nAndrea Petracci (Università di Bologna)\nMilena Wrobel (University of Oldenburg) \n* = online \nAbstracts\nWebsite \nSchedule\n\n\n\n\nMonday\nTuesday\nWednesday\nThursday\nFriday\n\n\n9:40 – 10:40\n\nKaveh 2\nKaveh 4\nBossinger\nKim\n\n\n11:10 – 12:10\n\nTolman 2\nTolman 3\nClarke\nCharton\n\n\n12:20 – 14:00\n\nLunch\nLunch\nLunch\nLunch\n\n\n14:00 -15:00\nKaveh 1\nKaveh 3\nFujita\nPetracci\nPalmer\n\n\n15:30 – 16:30\nTolman 1\n5-minute talks\nLee\nWrobel\nCrooks\n\n\n17:00 – 18:00\nSüß 1\nSüß 2\nSüß 3\nSüß 4\n\n\n\n\n\n\nBanquet\n\n\n\n\n\nOrganizers\nYunhyung Cho (Sungkyunkwan University)\nJaehyun Hong (IBS CCG)\nDonghoon Jang (Pusan National University)\nEunjeong Lee (Chungbuk National University) \nVenue\nIBS Science Culture Center \nRegistration\nPlease submit Google form by December 17. \nPoster\nPDF file \nMore Information\n• How to get to IBS-CCG\n• Accommodations\n• Restaurants
URL:https://ccg.ibs.re.kr/event/2024-01-15-19/
LOCATION:IBS Science Culture Center\, Daejeon\, Korea\, Republic of
CATEGORIES:Conferences and Workshops
ATTACH;FMTTYPE=image/jpeg:https://ccg.ibs.re.kr/wp-content/uploads/2024/01/Group-photo2-scaled.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20231212
DTEND;VALUE=DATE:20231216
DTSTAMP:20260416T055439
CREATED:20230808T010107Z
LAST-MODIFIED:20251002T043239Z
UID:2467-1702339200-1702684799@ccg.ibs.re.kr
SUMMARY:Workshop on Classical Algebraic Geometry
DESCRIPTION:Speakers\nAlberto Calabri (University of Ferrara)\nCinzia Casagrande (University of Torino)\nFlaminio Flamini (University of Rome Tor Vergata)\nPaola Frediani (University of Pavia)\nKangjin Han (DGIST)\nZhi Jiang (SCMS\, Fudan University)\nAkihiro Kanemitsu (Saitama University)\nGrzegorz Kapustka (Jagiellonian University)\nMichał Kapustka (IM PAN)\nSeonja Kim (Chungwoon University)\nHirokazu Nasu (Tokai University)\nWenbo Niu (University of Arkansas)\nJinhyung Park (KAIST)\nXavier Roulleau (University of Angers)\nFrancesco Russo (University of Catania)\nEduardo Luis Solá Conde (University of Trento) \nAbstracts\nPDF file \nSchedule\nDecember 12 (Tuesday) \n\n\n\n09:30~10:00\nRegistration\n\n\n10:00~11:00\nCinzia Casagrande\n\n\n11:00~11:30\nCoffee Break\n\n\n11:30~12:30\nJinhyung Park\n\n\n12:30~14:30\nLunch\n\n\n14:30~15:30\nSeonja Kim\n\n\n15:30~16:00\nCoffee Break\n\n\n16:00~17:00\nEduardo Luis Solá Conde\n\n\n18:00~20:00\nDinner for Speakers\n\n\n\n  \nDecember 13 (Wednesday) \n\n\n\n10:00~11:00\nFlaminio Flamini\n\n\n11:00~11:30\nCoffee Break\n\n\n11:30~12:30\nHirokazu Nasu\n\n\n12:30~14:30\nLunch\n\n\n14:30~15:30\nZhi Jiang\n\n\n15:30~16:00\nCoffee Break\n\n\n16:00~17:00\nAkihiro Kanemitsu\n\n\n\n  \nDecember 14 (Thursday) \n\n\n\n10:00~11:00\nMichał Kapustka\n\n\n11:00~11:30\nCoffee Break\n\n\n11:30~12:30\nGrzegorz Kapustka\n\n\n12:30~14:30\nLunch\n\n\n14:30~15:30\nAlberto Calabri\n\n\n15:30~16:00\nCoffee Break\n\n\n16:00~17:00\nFrancesco Russo\n\n\n17:30~20:00\nBanquet\n\n\n\n  \nDecember 15 (Friday) \n\n\n\n10:00~11:00\nXavier Roulleau\n\n\n11:00~11:30\nCoffee Break\n\n\n11:30~12:30\nWenbo Niu\n\n\n12:30~14:00\nLunch\n\n\n14:00~15:00\nKangjin Han\n\n\n15:00~15:30\nCoffee Break\n\n\n15:30~16:30\nPaola Frediani\n\n\n\nOrganizers\nDongSeon Hwang (IBS-CCG)\nJun-Muk Hwang (IBS-CCG)\nYongnam Lee (IBS-CCG/KAIST) \nVenue\nIBS Science Culture Center \nRegistration\nPlease submit Google form by November 10th. \nMain Hotel\nLotte City Hotel Daejeon (4-30 Doryong-dong\, Yuseong-gu\, Daejeon) \nMore Information\n• How to get to IBS-CCG\n• From Hotel to IBS
URL:https://ccg.ibs.re.kr/event/2023-12-12-15/
LOCATION:IBS Science Culture Center\, Daejeon\, Korea\, Republic of
CATEGORIES:Conferences and Workshops
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END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20231211T160000
DTEND;TZID=Asia/Seoul:20231211T170000
DTSTAMP:20260416T055439
CREATED:20231107T104342Z
LAST-MODIFIED:20231205T114256Z
UID:2625-1702310400-1702314000@ccg.ibs.re.kr
SUMMARY:Grzegorz Kapustka\, Projective Models of Nikulin Orbifolds
DESCRIPTION:    Speaker\n\n\nGrzegorz Kapustka\nJagiellonian University\n\n\n\n\n\n\nWe describe a locally complete family of projective irreducible holomorphic symplectic orbifolds as double covers of special complete intersections (3\, 4) in P6. This is a joint work with C. Camere\, A. Garbagnati and M. Kapustka.
URL:https://ccg.ibs.re.kr/event/2023-12-11-1600-1700/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Algebraic Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20231122T150000
DTEND;TZID=Asia/Seoul:20231122T173000
DTSTAMP:20260416T055439
CREATED:20231030T014452Z
LAST-MODIFIED:20231030T014452Z
UID:2613-1700665200-1700674200@ccg.ibs.re.kr
SUMMARY:Andreas Höring\, Projective Manifolds with Pseudoeffective (Co)tangent Bundle\, III\, IV
DESCRIPTION:    Speaker\n\n\nAndreas Höring\nUniversity of Nice\n\n\n\n\n\n\nSymmetric holomorphic forms on projective manifolds have been studied from various angles in the last ten years : Brotbek-Darondeau and independently Song-Yan Xie have shown that complete intersections of sufficiently high degree and codimension have an ample cotangent bundle\, so many symmetric forms. Vice versa Campana and Paun show that if the cotangent bundle is big\, then X is of general type. In this series of lectures I will work under the assumption that the cotangent bundle is pseudoeffective. In general this positivity assumption is too weak to have any useful implications\, but we will see that for the (co)tangent bundle it leads to surprisingly many restrictions on the geometry of the manifold. In particular we expect a nonvanishing property that is analogous to the famous nonvanishing conjecture for the canonical bundle. These talks are based on joint papers with Thomas Peternell and Junyan Cao.
URL:https://ccg.ibs.re.kr/event/2023-11-22/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Algebraic Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20231120T150000
DTEND;TZID=Asia/Seoul:20231120T173000
DTSTAMP:20260416T055439
CREATED:20231030T014336Z
LAST-MODIFIED:20231030T014336Z
UID:2611-1700492400-1700501400@ccg.ibs.re.kr
SUMMARY:Andreas Höring\, Projective Manifolds with Pseudoeffective (Co)tangent Bundle\, I\, II
DESCRIPTION:    Speaker\n\n\nAndreas Höring\nUniversity of Nice\n\n\n\n\n\n\nSymmetric holomorphic forms on projective manifolds have been studied from various angles in the last ten years : Brotbek-Darondeau and independently Song-Yan Xie have shown that complete intersections of sufficiently high degree and codimension have an ample cotangent bundle\, so many symmetric forms. Vice versa Campana and Paun show that if the cotangent bundle is big\, then X is of general type. In this series of lectures I will work under the assumption that the cotangent bundle is pseudoeffective. In general this positivity assumption is too weak to have any useful implications\, but we will see that for the (co)tangent bundle it leads to surprisingly many restrictions on the geometry of the manifold. In particular we expect a nonvanishing property that is analogous to the famous nonvanishing conjecture for the canonical bundle. These talks are based on joint papers with Thomas Peternell and Junyan Cao.
URL:https://ccg.ibs.re.kr/event/2023-11-20/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Algebraic Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20231101T150000
DTEND;TZID=Asia/Seoul:20231101T160000
DTSTAMP:20260416T055439
CREATED:20231024T124300Z
LAST-MODIFIED:20231024T124300Z
UID:2602-1698850800-1698854400@ccg.ibs.re.kr
SUMMARY:Seungjae Lee\, Cohomological Isomorphism of Symmetric Power of Cotangent Bundle of Ball Quotient and its Toroidal Compactification
DESCRIPTION:    Speaker\n\n\nSeungjae Lee\nIBS CCG\n\n\n\n\n\n\nIn this talk\, we investigate the L2-Dolbeault cohomology of the symmetric power of cotangent bundles of ball quotients with finite volume\, as well as their toroidal compactification. As a result\, we establish a version of L2-Hodge decompostion for complex hyperbolic space forms with finite volume\, under some mild condition for lattice.
URL:https://ccg.ibs.re.kr/event/2023-11-01/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Several Complex Variables Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20231025T110000
DTEND;TZID=Asia/Seoul:20231025T120000
DTSTAMP:20260416T055439
CREATED:20231022T054758Z
LAST-MODIFIED:20231022T054814Z
UID:2594-1698231600-1698235200@ccg.ibs.re.kr
SUMMARY:Yotsutani Naoto\, Chow Stability and Non-symmetric Kähler-Einstein Toric Fano Manifolds
DESCRIPTION:    Speaker\n\n\nYotsutani Naoto\nKagawa University\n\n\n\n\n\n\nIn 2001\, Donaldson proved that if a polarized manifold (X\, L) admits constant scalar curvature Kähler metrics in c1(L)\, then (X\, L) is asymptotically Chow stable whenever its automorphism group Aut(X\, L) is discrete. \nIn this talk\, we show that this result does not hold in the case where Aut(X\, L) is not discrete. \nThis talk is based on a joint work with H. Ono and Y. Sano.
URL:https://ccg.ibs.re.kr/event/2023-10-25/
LOCATION:B266\, IBS\, Korea\, Republic of
CATEGORIES:Algebraic Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20231017
DTEND;VALUE=DATE:20231021
DTSTAMP:20260416T055439
CREATED:20230725T012006Z
LAST-MODIFIED:20231022T055239Z
UID:2391-1697500800-1697846399@ccg.ibs.re.kr
SUMMARY:Workshop on Parabolic Geometry and Related Topics
DESCRIPTION:Speakers\nGil Bor (CIMAT)\nAndreas Cap (U. Vienna)\nSean Curry (Oklahoma State U.)\nMike Eastwood (U. Adelaide)\nJaehyun Hong (IBS-CCG)\nJun-Muk Hwang (IBS-CCG)\nSung Yeon Kim (IBS-CCG)\nIlya Kossovskiy (Masaryk U.)\nBoris Kruglikov (U. Tromso)\nOmid Makhmali (PAS-CTP)\nBenjamin McMillan (IBS-CCG)\nTohru Morimoto (Nara Women’s U.)\nIgor Zelenko (Texas A&M) \nAbstracts\nPDF file \nSchedule\nOct. 17 \n10:00-11:00 Igor Zelenko\n11:30-12:30 Ilya Kossovskiy\n15:00-16:00 Gil Bor\n16:30-17:30 Sung Yeon Kim \nOct. 18 \n10:00-11:00 Andreas Cap\n11:30-12:30 Jun-Muk Hwang\n14:30-15:30 Benjamin McMillan \nOct. 19 \n10:00-11:00 Sean Curry\n11:30-12:30 Omid Makhmali\n15:00-16:00 Tohru Morimoto\n16:30-17:30 Jaehyun Hong \nOct. 20 \n10:00-11:00 Boris Kruglikov\n11:30-12:30 Mike Eastwood \nOrganizer\nJun-Muk Hwang (IBS-CCG) \nVenue\nB109\, IBS\, Daejeon\, Korea \nMore Information\n• How to get to IBS-CCG
URL:https://ccg.ibs.re.kr/event/2023-10-17-20/
LOCATION:B109\, IBS\, Korea\, Republic of
CATEGORIES:Conferences and Workshops
ATTACH;FMTTYPE=image/jpeg:https://ccg.ibs.re.kr/wp-content/uploads/2023/07/Workshop-on-parabolic-geometry-group-photo-scaled.jpg
END:VEVENT
END:VCALENDAR