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The 13th East Asian School of Knots and Related Topics

posted Jan 14, 2018, 10:40 PM by Jihye Jung   [ updated Jan 14, 2018, 10:45 PM ]

The 13th East Asian School of Knots and Related Topics
January 29-February 1, 2018, KAIST, Daejeon, South Korea 

 Objectives : 

  The purpose of the conference is to help promoting the academic exchange and the friendship among researchers of three East Asian countries in the area of knot theory and related topics and encouraging graduate students of the three countries to study in this fascinating area of mathematics

 Program Committee : 

 Jae Choon Cha (POSTECH, Korea), Boju Jiang (Peking University, China), 

 Gyo Taek Jin (KAIST, Korea), Seiichi Kamada (Osaka City University, Japan), 

 Akio Kawauchi (OCAMI, Osaka City University, Japan), Ki Hyoung Ko (KAIST, Korea), 

 Toshitake Kohno (University of Tokyo, Japan), Yukio Matsumoto (Gakushuin University, Japan), 

 Tomotada Ohtsuki (RIMS, Kyoto University, Japan), Shicheng Wang (Peking University, China), 

 Ruifeng Qiu (East China Normal University, China), Jiajun Wang (Peking University, China). 

 Local Organizing Committee : 

  Ki Hyoung Ko (KAIST), Gyo Taek Jin (KAIST), 

 Jae Choon Cha (POSTECH), Hyungryul Baik (KAIST). 


    Homepage < click

GAIA Workshop on Space Tesselation and Packing

posted Dec 12, 2017, 6:23 PM by Eunyoung Choi   [ updated Dec 12, 2017, 10:23 PM ]

GAIA Workshop on Space Tesselation and Packing
                                                                KAIST, Sep. 14 ~ 17, 2017 

  Objective :
A Voronoi diagram is a tessellation of space into regions based on the distance to a specific subset of the space. Voronoi diagrams arise in nature and have practical and theoretical applications in many fields of science, including biology, polymer physics and informatics. They have been extensively studied in computational geometry for point sites and the Euclidean metric in two dimensions. Voronoi diagrams can be defined for sites other than points, metrics other than Euclidean, and dimensions higher than 2-dimension. For instance, the retraction method used in robot motion planning uses convex distance functions and the autonomous robot navigations find clear routes in the Voronoi diagrams of walls (or obstacles) of the room. POI sites in a city are amidst obstacles (buildings, rivers, etc) and transportation networks (roads, railways). It is not clear how to generalize known results to more general sites under general metrics in 2-or higher dimensions. More research is needed to handle more general Voronoi diagrams.

Packing is a classical geomeric optimization problem in which the shape of a container is predefined (such as a disk, a square, or a rectangle) and we aim to find a smallest container for input objects while the input objects remain disjoint in their interiors. Packing problems have been studied for a long time. It dates back to 1611 when Kepler studied sphere packing in three-dimensional Euclidean space. There has been recent algorithmic progress on packing problem - packing a set of disks into a smallest disk and packing a set of convex polygons into a given axis-parallel rectangle under translations and rigid motions in the plane. There still are, however, many packing problems for more general objects under various transformations in higher dimensions.

There are many other optimization problems in space tessellation and packing. This meeting serves to trigger extensive collaboration on advanced research in this area.

- Organizers: Otfried Cheong(KAIST), Hee-Kap Ahn(POSTECH),  Christian Knauer(University of Bayreuth)
- Participants

Till Miltzow(Université Libre de Bruxelles), Herman Haverkort(TU Eindhoven),

Antoine Vigneron(UNIST), Fabian Stehn(University of Bayreuth), Siu-Wing Cheng(HKUST),

Xavier Goaoc(University of Marne-la-Vallée), Hyung-Chan An(Yonsei University),

Eunjung Kim(LAMSADE, CNRS), Raimund Seidel(Saarland University),

Yoshio Okamoto(University of Electro-Communications), Zuzana Patáková(Charles University),

Sangduk Yoon(POSTECH), Eunjin Oh(POSTECH), Édouard Bonnet(Middlesex University),

Taegyoung Lee(KAIST), Yoonsung Choi(KAIST)


KSCV Workshop #23

posted Dec 12, 2017, 4:57 PM by Eunyoung Choi   [ updated Dec 12, 2017, 5:03 PM ]

KSCV Workshop #23

                                   DGIST, Daegu, December 14-16, 2017


     Taeyong Ahn (KIAS)

     Jong-Do Park (Kyung Hee University)



     Young-Jun Choi (Pusan National University)

     Sejun Kim (POSTECH)

     Seungjae Lee (POSTECH)

     Inyoung Park (Pusan National University)

     Aeryeong Seo (KIAS)

     Duc Viet Vu (KIAS)

     Jongho Yang (Korea University)

     Jihun Yum (POSTECH)    



     Heungju Ahn (DGIST)

     Jisoo Byun (Kyungnam University)

     Sung-Yeon Kim (CMC, KIAS)

     Kang-Hyurk Lee (Kyeongsang National University)

     Jong-Do Park (Kyung Hee University)





Hyperbolic 3-manifolds and related topics

posted Sep 14, 2017, 11:33 PM by BoGwang Jeon   [ updated Dec 26, 2017, 10:58 PM ]

Hyperbolic 3-manifolds and related topics 

June 18-22, 2018


Hyungryul Baik (KAIST, Korea)
Jason Behrstock (CUNY, USA)
Abhijit Champanerkar (CUNY, USA)
Nathan Dunfield (UIUC, USA)
Sang-Hyun Kim (SNU, Korea)
Thomas Koberda (UV, USA)
Ilya Kofman (CUNY, USA)
Thang Le (GIT, USA)
Walter Neumann (Columbia University, USA)
Jinsung Park (KIAS, Korea)
Jessica Purcell (Monash University, Australia) 
Tian Yang (Texas A&M, USA)
Yi Liu (Peking University, China)

To be added more...

Organizing Committee:

Jae-Choon Cha (POSTECH) 
BoGwang Jeon (POSTECH)

Graduate students and recent PHD's can be supported partially. The deadline for registration is March 30th, 2018. (Speakers do not need to register.) 

The KSCV12 Symposium

posted Mar 2, 2017, 9:19 PM by Hyemin Shin   [ updated Jul 24, 2017, 12:46 AM ]

The KSCV12 Symposium

; The 12th Korean Conference on Several Complex Variables
-- in honor of Kang-Tae Kim’s 60th birthday --

The Kolon Hotel in Gyeong-Ju, South Korea

July 3~7, 2017

- Organizing Committee:

Jisoo Byun (Kyungnam University)
Hong Rae Cho (Pusan National University)
Sung-Yeon Kim (Korea Institute for Advanced Study)
Kang-Hyurk Lee (GAIA and Gyeongsang National University)
Jong-Do Park (Kyung Hee University)

- Hour-speakers:

Eric Bedford (SUNY, USA)
John S. Bland (University of Toronto, Canada)
Zbigniew Błocki (Jagiellonian University, Poland)
Bo-Yong Chen (Fudan University, China)
Jean-Pierre Demailly (Université Grenoble Alpes, France)
John-Erik Fornæss (NTNU, Norway)
Franc Forstnerič (University of Ljubljana, Slovenia)
Hervé Gaussier (Université Grenoble Alpes, France)
Kengo Hirachi (The University of Tokyo, Japan)
Xiao Jun Huang (Rutgers University, USA)
Jun-Muk Hwang (KIAS, Korea)
Jae-Cheon Joo (KFUPM, Saudi Arabia)
Dano Kim (Seoul National University, Korea)
Ngaiming Mok (The University of Hong Kong, China)
Karl Oeljeklaus (Aix-Marseille Université, France)
Takeo Ohsawa (Nagoya University, Japan)
Gerd Schmalz (University of New England, Australia)
Aeryeong Seo (KIAS, Korea) 
Nikolay Shcherbina (University of Wuppertal, Germany)
Andrea F. Spiro (University of Camerino, Italy)
Erlend Fornæss Wold (University of Oslo, Norway)
Xiangyu Zhou (Chinese Academy of Sciences, China)

Registration _closed         List of Participants <--click

POSTER      Timetable        Title and Abstract

Contact: Prof. Kang-Hyurk Lee( 

GAIA Workshop on Complex Analysis

posted Oct 17, 2016, 7:17 PM by Hyemin Shin   [ updated Feb 21, 2017, 12:37 AM ]

GAIA Workshop on Complex Analysis

February 20-24, 2017
Maths bldg. Room404, POSTECH


Taeyong Ahn(KIAS)
Masanori Adachi(Tokyo University of Science)
Tobias Harz(GAIA)
Seungro Joo(GAIA)
Yoshiki Jikumaru(Kyushu University)
Dano Kim(GAIA&Seoul National University)
Kang-Hyurk Lee(GAIA&Gyeongsang National University)
Yoshikazu Nagata(GAIA)
Ngoc Cuong Nguyen(GAIA)
Inyoung Park(GAIA)
Thomas Pawlaschyk(Universität Wuppertal)
Feng Rong(Shanghai Jiaotong University)
Atsushi Yamamori(Academia Sinica)
Sungmin Yoo(GAIA)
Jihun Yum(GAIA)
Liyou Zhang(Capital Normal University)

Organizers & Survey Lectures

Kang-Tae Kim (GAIA)
Nikolay Shcherbina (Universität Wuppertal)

Registration <--closed

** Accommodation: POSCO International Center
    Hotel expenses will be covered by GAIA.


posted Oct 17, 2016, 7:13 PM by Hyemin Shin   [ updated Oct 17, 2016, 7:14 PM ]

(FWAC 2016)

2016.11.11-12, 연세대학교 상남경영원


11월 11일
13:30 - 14:00 등록
14:00 - 14:50 초청강연
14:50 - 15:10 휴식
15:10 - 16:50 연구발표
16:50 - 17:10 휴식
17:10 - 18:00 초청강연
18:30 - 21:00 만찬

11월 12일
09:00 - 09:50 초청강연
09:50 - 10:10 휴식
10:10 - 11:30 연구발표
11:30 - 11:40 휴식
11:40 - 12:30 초청강연


안형찬 (연세대학교)
Antoine Vigneron (UNIST)
조민수 (포항공과대학교)
Martin Ziegler (KAIST)


 박희진 (컴퓨터이론연구회 위원장 / 한양대학교)
안희갑 (포항공과대학교)
한요섭 (연세대학교)

Homepage < click

A Special SCV Day @ GAIA

posted Aug 31, 2016, 6:31 PM by Hyemin Shin

A Special SCV Day @ GAIA; Special Lecture Series

September 7 2016(Wed), Maths bldg. Room 106

I. 15:30 - 16:20  Thomas Pawlaschyk (Universität Wuppertal)

Title: On the Dirichlet-Bremermann problem for q-plurisubharmonic functions on unbounded domains in C^n

Abstract: Let $D$ be a (possibly unbounded) domain in $\mathbb{C}^n$ and let $f$ be a continuous function prescribed on the boundary of $D$. We are interested in finding a continuous extension $F$ of $f$ into $D$ (or at least some open neighborhood of $bD$ in $\overline{D}$) which is $q$-plurisubharmonic, $(n-q-1)$-plurisuperharmonic (meaning that $(dd^c F)^n=0$) and which is maximal in the following sense: each $q$-plurisubharmonic function $\psi$ on $\overline{D}$ with $\psi\leq f$ on $bD$  satisfies $\psi \leq F$ on $\overline{D}$. We give conditions on $D$ (and $f$) which garantuee the existence of such a function $F$, but these conditions seem to be rather restrictive as we can see in some examples. So further research is required (even in the classical plurisubharmonic case).

Ⅱ.16:30 - 17:20  Toshihiro Nose (Fukuoka Institute of Technology)

Title: Failure of meromorphy for local zeta functions

Abstract: In this talk, we discuss the meromorphy of local zeta functions. It is known that in real analytic setting, local zeta functions can be analytically continued as meromorphic functions to whole complex plane. On the other hand, we obtain a failure of meromorphy for local zeta functions in some non-real analytic settings. In order to show our result, we investigate the asymptotic behavior of local zeta functions at a boundary point of the half plane of convergence. This work is joint with J. Kamimoto.

Ⅲ.20:00 - 20:50   Rafael Andrist (Universität Wuppertal)

Title: The fibred density property and the automorphism group of the spectral ball

Abstract: We generalize the notion of the density property for complex manifolds to holomorphic fibrations, and introduce the notion of the fibred density property. We prove that the natural fibration of the spectral ball over the symmetrized polydisc enjoys the fibred density property and determine the automorphism group of the spectral ball.
Joint work with Frank Kutzschebauch (University of Bern)

Ⅳ.21:00 - 21:50   Shin-ichi Matsumura (Tohoku University)

Title: Version of injectivity and extension theorems

Abstract: In this talk, I would like to give an analytic version of the injectivity theorem by using multiplier ideal sheaves, and prove an extension theorem for holomorphic sections. As an application, I introduce several results for semi-ampleness related to the abundance conjecture in birational geometry.
This talk is based on a joint work with Yoshinori Gongyo (Tokyo University)
and the paper at arXiv: 1406.6132v2 (to appear in Ann. Sci. Ecole Norm. Sup.).

For further information, please contact: Hyemin Shin

    POSTER <----click!

The 32nd International Symposium on Computational Geometry (SoCG 2016)

posted May 25, 2016, 6:03 PM by Jihye Jung

The 32nd International Symposium on Computational 

Geometry (SoCG 2016)

Boston, June 14-18, 2016

- Invited Speakers

 Daniela Rus, MIT

Toward Pervasive Robots

 Jacob Fox, Stanford.

Discrete Geometry, Algebra, and Combinatorics

 Santosh Vempala, Georgia Institute of Technology

The Interplay of Sampling and Optimization in High Dimension

 Timothy M. Chan, University of Waterloo

Computational Geometry, from Low to High Dimensions



- Local Organizing Committee

Greg Aloupis, Tufts University

Diane Souvaine, Tufts University

Csaba Tóth, California State University Northridge

Hee-Kap Ahn, POSTECH


- Program Committee

Mohammad Ali Abam, Sharif University, Iran

Nina Amenta, University of California at Davis, USA

Ulrich Bauer, TU Munich, Germany

Sergio Cabello, University of Ljubljana, Slovenia

Jean Cardinal, Université Libre de Bruxelles, Belgium

Éric Colin de Verdière, École normale supérieure, Paris and CNRS, France

Sándor Fekete, (co-chair) TU Braunschweig, Germany

Marc Glisse, Inria, France

David Gu, Stony Brook University, USA

Matias Korman, Tohoku University, Japan

Anna Lubiw, (co-chair) University of Waterloo, Canada

Wolfgang Mulzer, FU Berlin, Germany

Joseph O'Rourke, Smith College, USA

Jeff M. Phillips, University of Utah, USA

Micha Sharir, Tel Aviv University, Israel

Takeshi Tokuyama, Tohuku University, Japan

Géza Tóth, Rényi Institute, Hungary

Kevin Verbeek, TU Eindhoven, Netherlands

Yusu Wang, Ohio State University, USA

Emo Welzl, ETH Zurich, Switzerland

Chee Yap, New York University, USA


SoCG Homepage ← click!

The KSCV11 Symposium

posted May 23, 2016, 9:26 PM by Hyemin Shin   [ updated Jul 11, 2016, 9:34 PM ]

The KSCV11 Symposium

; The 11th Korean Conference in Several Complex Variables

The Kolon Hotel in Gyeong-Ju, Korea

July 4~8, 2016


- Organizing Committee:

Sung-Yeon Kim (KIAS, Korea)
Kang-Hyurk Lee (GAIA and Gyeongsang National University, Korea)
Young Joo Lee (Chonnam National University, Korea)
Jong-Do Park (Kyung Hee University, Korea)

- Scientific Committee:
Zbigniew Blocki (Jagiellonian University, Poland)
Boo Rim Choe (Korea University, Korea)
John Erik Fornaess (NTNU, Norway)
Kang-Tae Kim (POSTECH, Korea)
Takeo Ohsawa (Nagoya University, Japan)
Nikolay Shcherbina (Bergische Universität Wuppertal, Germany)

- Hour-speakers:
Rafael Andrist (Bergische Universität Wuppertal, Germany)
Hong Rae Cho (Pusan National University, Korea)
Young-Jun Choi (Institut Fourier, France)
 Hervé Gaussier (Université Grenoble Alpes, France)
Sachiko Hamano (Osaka City University, Japan)
Chong-Kyu Han (Seoul National University, Korea)
Tobias Harz (GAIA, Korea)
Pak Tung Ho (Sogang University, Korea)
Xiaojun Huang (Rutgers University, USA)
Sergei Ivashkovich (Université de Lille-1, France)
Jae-Cheon Joo (Inha University, Korea)
Lukasz Kosinski (Jagiellonian University, Poland)
Song-Ying Li (University of California, Irvine, USA)
Yoshihiko Matsumoto (Osaka University, Japan)
Shin-ichi Matsumura (Tohoku University, Japan)
Viêt-Anh Nguyên (Université Paris-Sud, France)
Pham Hoang Hiep (Vietnam Academy of Science and Technology, Vietnam)
Jörg Winkelmann (Ruhr-Universität Bochum, Germany)
Dmitri Zaitsev (Trinity College, Ireland)
Xiangyu Zhou (Chinese Academy of Sciences, China)

*** Poster <---click

*** Timetable <----click

Contact: Kang-Hyurk Lee( 

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