BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Discrete Mathematics Group - ECPv5.10.0//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:Discrete Mathematics Group
X-ORIGINAL-URL:https://dimag.ibs.re.kr
X-WR-CALDESC:Events for Discrete Mathematics Group
BEGIN:VTIMEZONE
TZID:Asia/Seoul
BEGIN:STANDARD
TZOFFSETFROM:+0900
TZOFFSETTO:+0900
TZNAME:KST
DTSTART:20210101T000000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;VALUE=DATE:20211020
DTEND;VALUE=DATE:20211023
DTSTAMP:20211020T103914
CREATED:20211019T150000Z
LAST-MODIFIED:20211014T063616Z
UID:4324-1634688000-1634947199@dimag.ibs.re.kr
SUMMARY:Young Researchers in Extremal and Probabilistic Combinatorics
DESCRIPTION:The aim of the Young Researchers in Extremal and Probabilistic Combinatorics is to bring together early career researchers working on these topics. The workshop will consist of several 25 minute talks across three days from October 20 to 22\, 2021. Due to Covid the workshop will be held online. \n \nInvited Speakers & Program\nOct. 20 Wednesday 4 PM (KST) – 8 PM (KST)\n\nAndrzej Grzesik (Jagiellonian University): Degenerated generalized Turán numbers of cycles\, 4:00-4:25\nJan Volec (Czech Technical University): Existence of common graphs with large chromatic number\, 4:30-4:55\nBalázs Patkós (Rényi Institute): Vector sum-intersection theorems\, 5:00-5:25\nIstván Tomon (ETH Zurich): Small doubling\, atomic structure and $\ell$-divisible set families\, 5:30-5:55\nMichael Anastos (Freie Universität Berlin): Longest Cycles in Sparse Random Graphs and Where to Find Them\, 6:30-6:55\nAdam Zsolt Wagner (Tel Aviv University): Constructions in combinatorics via neural networks\, 7:00-7:25\nYelena Yuditsky (Université libre de Bruxelles): On multicolor Ramsey numbers and subset-coloring of hypergraphs\, 7:30-7:55\n\nOct. 21 Thursday 4 PM (KST) – 8 PM (KST)\n\nKevin Hendrey (IBS Discrete Mathematics Group): Extremal functions for sparse minors\, 4:00-4:25\nSimona Boyadzhiyska (Freie Universität Berlin): Ramsey simplicity of random graphs\, 4:30-4:55\nShagnik Das (National Taiwan University): Schur’s Theorem in randomly perturbed sets\, 5:00-5:25\nTony Huynh (Monash University): Subgraph densities in minor-closed classes (and beyond)\, 5:30-5:55\nAnder Lamaison (Masaryk University): Hypergraphs with minimum uniform Turán density\, 6:30-6:55\nBen Lund (IBS Discrete Mathematics Group): Maximal 3-wise intersecting families\, 7:00-7:25\nLiana Yepremyan (London School of Economics): Enumerating independent sets in Abelian Cayley graphs\, 7:30-7:55\n\n\nOct. 22 Friday 4 PM (KST) – 8 PM (KST)\n\nAndrey Kupavskii (CNRS): Binary scalar products\, 4:00-4:25\nDániel Gerbner (Rényi Institute): Exact results for generalized Turán problems\, 4:30-4:55\nOliver Janzer (University of Cambridge): Tiling with monochromatic bipartite graphs of bounded maximum degree\, 5:00-5:25\nNika Salia (Rényi Institute): Pósa-type results for Berge Hypergraphs\, 5:30-5:55\nDebsoumya Chakraborti (IBS Discrete Mathematics Group): Mixing time and expanders\, 6:30-6:55\nWei-Tian Li (National Chung Hsing University): Ramsey Properties for $V$-shaped Posets in the Boolean Lattices\, 7:00-7:25\nDimitry Zakharov (Moscow Institute of Physics and Technology): Zero subsums in vector spaces over finite fields\, 7:30-7:55\n\nAbstracts (pdf file) \n
URL:https://dimag.ibs.re.kr/event/2021-10-20/
LOCATION:Zoom ID: 554 788 7710 (507464)
CATEGORIES:Workshops and Conferences
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20211026T163000
DTEND;TZID=Asia/Seoul:20211026T173000
DTSTAMP:20211020T103914
CREATED:20211026T073000Z
LAST-MODIFIED:20211013T232013Z
UID:4709-1635265800-1635269400@dimag.ibs.re.kr
SUMMARY:Donggyu Kim (김동규)\, 𝝘-graphic delta-matroids and their applications
DESCRIPTION:Bouchet (1987) defined delta-matroids by relaxing the base exchange axiom of matroids. Oum (2009) introduced a graphic delta-matroid from a pair of a graph and its vertex subset. We define a $\Gamma$-graphic delta-matroid for an abelian group $\Gamma$\, which generalizes a graphic delta-matroid. \nFor an abelian group $\Gamma$\, a $\Gamma$-labelled graph is a graph whose vertices are labelled by elements of $\Gamma$. We prove that a certain collection of edge sets of a $\Gamma$-labelled graph forms a delta-matroid\, which we call a $\Gamma$-graphic delta-matroid\, and provide a polynomial-time algorithm to solve the separation problem\, which allows us to apply the symmetric greedy algorithm of Bouchet (1987) to find a maximum weight feasible set in such a delta-matroid. We also prove that a $\Gamma$-graphic delta-matroid is a graphic delta-matroid if and only if it is even. We prove that every $\mathbb{Z}_p^k$-graphic delta matroid is represented by some symmetric matrix over a field of characteristic of order $p^k$\, and if every $\Gamma$-graphic delta-matroid is representable over a finite field $\mathbb{F}$\, then $\Gamma$ is isomorphic to $\mathbb{Z}_p^k$ and $\mathbb{F}$ is a field of order $p^\ell$ for some prime $p$ and positive integers $k$ and $\ell$. \nThis is joint work with Duksang Lee and Sang-il Oum.
URL:https://dimag.ibs.re.kr/event/2021-10-26/
LOCATION:Room B232\, IBS (기초과학연구원)
CATEGORIES:Discrete Math Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20211102T163000
DTEND;TZID=Asia/Seoul:20211102T173000
DTSTAMP:20211020T103914
CREATED:20211102T070000Z
LAST-MODIFIED:20210910T230546Z
UID:4588-1635870600-1635874200@dimag.ibs.re.kr
SUMMARY:Jaehoon Kim (김재훈)\, 2-complexes with unique embeddings in 3-space
DESCRIPTION:A well-known theorem of Whitney states that a 3-connected planar graph admits an essentially unique embedding into the 2-sphere. We prove a 3-dimensional analogue: a simply-connected 2-complex every link graph of which is 3-connected admits an essentially unique locally flat embedding into the 3-sphere\, if it admits one at all. This can be thought of as a generalisation of the 3-dimensional Schoenflies theorem. This is joint work with Agelos Georgakopoulos.
URL:https://dimag.ibs.re.kr/event/2021-11-02/
LOCATION:Room B232\, IBS (기초과학연구원)
CATEGORIES:Discrete Math Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20211105T163000
DTEND;TZID=Asia/Seoul:20211105T173000
DTSTAMP:20211020T103914
CREATED:20211111T073000Z
LAST-MODIFIED:20210924T111557Z
UID:4555-1636129800-1636133400@dimag.ibs.re.kr
SUMMARY:Martin Milanič\, TBA
DESCRIPTION:
URL:https://dimag.ibs.re.kr/event/2021-11-05/
LOCATION:Zoom ID: 934 3222 0374 (ibsdimag)
CATEGORIES:Virtual Discrete Math Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20211111T163000
DTEND;TZID=Asia/Seoul:20211111T173000
DTSTAMP:20211020T103914
CREATED:20211003T042126Z
LAST-MODIFIED:20211003T042126Z
UID:4668-1636648200-1636651800@dimag.ibs.re.kr
SUMMARY:Sebastian Wiederrecht\, TBA
DESCRIPTION:
URL:https://dimag.ibs.re.kr/event/2021-11-11/
LOCATION:Zoom ID: 934 3222 0374 (ibsdimag)
CATEGORIES:Virtual Discrete Math Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20211125T163000
DTEND;TZID=Asia/Seoul:20211125T173000
DTSTAMP:20211020T103914
CREATED:20210902T085413Z
LAST-MODIFIED:20210902T085413Z
UID:4552-1637857800-1637861400@dimag.ibs.re.kr
SUMMARY:Fedor Fomin\, TBA
DESCRIPTION:
URL:https://dimag.ibs.re.kr/event/2021-11-25/
LOCATION:Zoom ID: 934 3222 0374 (ibsdimag)
CATEGORIES:Virtual Discrete Math Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20211128
DTEND;VALUE=DATE:20211201
DTSTAMP:20211020T103914
CREATED:20211127T150000Z
LAST-MODIFIED:20210817T025919Z
UID:4469-1638057600-1638316799@dimag.ibs.re.kr
SUMMARY:International Conference on Discrete Mathematics and Computer Science (ICDMCS)
DESCRIPTION:The spirit of the International Conference on Discrete Mathematics and Computer Science (ICDMCS)\, which will be held in Dalat\, Vietnam on November 28-30\, 2021\, is to connect\, strengthen and enlarge the network of researchers in these domains in Vietnam. It is a forum for scientists\, PhD and master students to exchange ideas and methods\, introduce and discuss results\, research interests in combinatorics\, graph theory\, theoretical computer science\, related issues and practical applications. It will be preceded by the International Mathematics Open Day on November 28 with activities and exhibitions targeting to mathematics for sustainable development. The conference and the international math open day will be hosted by Dalat University (DLU) and International Centre for Research and Postgraduate Training in Mathematics Under the Auspices of UNESCO (ICRTM). \n Invited Speakers\n\nAlexis DROGOUL (IRD\, France)\nHO Tu Bao (VIASM\, Vietnam)\nLE Hoai Bac (HCMUS\, Vietnam)\nSang-il OUM (IBS and KAIST\, South Korea)\nPHAN Thi Ha Duong (ICRTM/Vietnam)\nIngo SCHIERMEYER (TU Freiberg/Germany)\nPatrick TALLAINDIER (INRA\, France)\nVU Ha Van (VinBigdata\, Vietnam; Yale University/America)\n\nLocation\nDa Lat University\, 01 Phu Dong Thien Vuong Road\, Da Lat\, Lam Dong\, Vietnam. \nFor more information\nplease visit the website: http://icdmcs.dlu.edu.vn/ \nOrganizations\n\nDalat University (DLU)\, Vietnam and ICRTM\, Institute of Mathematics – VAST\, Vietnam (main organizations).\nHanoi University of Science & Technology (HUST)\, Vietnam.\nUMMISCO\, IRD\, France\nThuyloi University\, Vietnam.\nInstitute for Basic Science (IBS)\, South Korea.\nVinGroup Innovation Foundation (VinIF)\, Vietnam.\n\nOrganizers\n\nPhan Thi Ha Duong (ICRTM)\nTrinh Duc Tai (DLU)\nDuong Van Hai (DLU)\nNguyen Ngoc Doanh (TLU)\nTran Thi Cam Giang (TLU)\nNguyen Hoang Thach (IM)\nTran Manh Tuan (IBS)\nĐoan Duy Trung (HUST)\n\nContact:\nFaculty of Mathematics and Informatics\, Dalat University\nTelephone: (+84) 902556655\nEmail: icdmcs2021@dlu.edu.vn
URL:https://dimag.ibs.re.kr/event/2021-11-28/
LOCATION:Dalat\, Vietnam
CATEGORIES:Workshops and Conferences
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20211209T163000
DTEND;TZID=Asia/Seoul:20211209T173000
DTSTAMP:20211020T103914
CREATED:20211003T042257Z
LAST-MODIFIED:20211003T042257Z
UID:4671-1639067400-1639071000@dimag.ibs.re.kr
SUMMARY:David Munhá Correia\, TBA
DESCRIPTION:
URL:https://dimag.ibs.re.kr/event/2021-12-09/
LOCATION:Zoom ID: 934 3222 0374 (ibsdimag)
CATEGORIES:Virtual Discrete Math Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20211220
DTEND;VALUE=DATE:20211223
DTSTAMP:20211020T103914
CREATED:20211219T150000Z
LAST-MODIFIED:20211011T234114Z
UID:4146-1639958400-1640217599@dimag.ibs.re.kr
SUMMARY:2021 Combinatorics Workshop (2021 조합론 학술대회)
DESCRIPTION:The Combinatorics Workshop (조합론 학술대회) is an annual conference of combinatorialists in Korea that started in 2004 by the Yonsei University BK21 Research Group. Since 2013\, this workshop has been advised by the committee of discrete mathematics of the Korean Mathematical Society. This year it will take place at The Bloomvista in Yangpyeong on December 20-22\, 2021. \nThe aim of this workshop is to bring together active researchers with different backgrounds to discuss recent and prospective advances in combinatorics and related areas. \nWe plan to limit the number of participants. Registration (without a fee) will be required. General participants will be required to pay for their own accommodation. \n\nTitle: 2021 Combinatorics Workshop (2021 조합론 학술대회)\nDate: December 20 – 22 (Mon-Wed)\, 2021\nVenue: The Bloomvista\, Yangpyeong\nWebsite: https://cw2021.combinatorics.kr\n\nPlan\n\nStarting in the afternoon of Thursday and ending in the morning of Wednesday.\nThere will be 5 invited talks for 50 minutes each.\nThere will be contributed talks for 25 minutes each.\n\nUsing English is recommended if there are non-Korean participants in the audience.\nThe call for contributed talks will be announced later.\n\n\nIt will be an offline meeting.\n\nInvited Speakers\n\nDongsu Kim\, KAIST\nJoonkyung Lee\, Hanyang University\nHong Liu\, University of Warwick\, UK\nSuil O\, SUNY Korea\nSeonjeong Park\, Jeonju University\n\nCall for Abstracts\nWe are looking for contributed talks! If you are interested in giving a contributed talk\, then please submit your abstract until November 15\, 2021. \nRegistration\n\nPlease fill out the registration form by November 21\, 2021.\n\nThe registration is free.\nThe organizers will announce the price for the accommodation soon.\n\n\nDue to the government COVID-19 policy\, the organizers may reject some registration\, even if the registration was made before November 21.\n\nOrganizing Committee\n\nJeong-Ok Choi\, GIST\nSang-il Oum\, IBS Discrete Mathematics Group and KAIST\nHeesung Shin\, Inha University\n\nAdvisory Committee\nCommittee of Discrete Mathematics\, The Korean Mathematical Society (Chair: Soojin Cho\, Ajou University) \nHost and Sponsors\nIBS Discrete Mathematics Group
URL:https://dimag.ibs.re.kr/event/2021-combinatorics-workshop/
LOCATION:The Bloomvista
CATEGORIES:Workshops and Conferences
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20211223T163000
DTEND;TZID=Asia/Seoul:20211223T173000
DTSTAMP:20211020T103914
CREATED:20211223T073000Z
LAST-MODIFIED:20210908T011438Z
UID:4564-1640277000-1640280600@dimag.ibs.re.kr
SUMMARY:Ken-ichi Kawarabayashi (河原林 健一)\, TBA
DESCRIPTION:
URL:https://dimag.ibs.re.kr/event/2021-12-23/
LOCATION:Zoom ID: 934 3222 0374 (ibsdimag)
CATEGORIES:Virtual Discrete Math Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20220320
DTEND;VALUE=DATE:20220328
DTSTAMP:20211020T103914
CREATED:20220319T150000Z
LAST-MODIFIED:20210823T083117Z
UID:3527-1647734400-1648425599@dimag.ibs.re.kr
SUMMARY:MATRIX-IBS Workshop: Structural Graph Theory Downunder II
DESCRIPTION:This program consists of a short intensive workshop\, where mathematicians from across the globe will come together to work on open problems in structural graph theory. We will consider the following research themes: graph minors\, graph colouring\, Hadwiger’s Conjecture\, bounded expansion classes\, graph product structure theory\, generalised colouring numbers\, VC dimension\, induced subgraphs\, Erdős-Hajnal conjecture\, Gyárfás-Sumner conjecture\, twin-width\, asymptotic dimension. The majority of the time will be allocated to collaborative research (with only a few talks). The goal is to create an environment where mathematicians at all career stages work side-by-side. We anticipate that open problems will be solved\, and lasting collaborations will be initiated. \nURL: https://www.matrix-inst.org.au/events/structural-graph-theory-downunder-ll/ \nRegistration is by invitation only. If you are interested to participate in this research program\, please contact one of the organisers with your CV and research background. \n
URL:https://dimag.ibs.re.kr/event/2022-03-20/
LOCATION:MATRIX\, Australia
CATEGORIES:Workshops and Conferences
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20220620
DTEND;VALUE=DATE:20220625
DTSTAMP:20211020T103914
CREATED:20190607T162650Z
LAST-MODIFIED:20210402T115110Z
UID:947-1655683200-1656115199@dimag.ibs.re.kr
SUMMARY:Seymour is Seventy
DESCRIPTION:A conference honouring the seventieth birthday of Paul Seymour \n\nTo be held in ENS de Lyon\, France\, June 15 – 19\, 2020. \nDue to the COVID-19\, the organizers decided to postpone the conference “Seymour is Seventy”. We hope to run this event in the summer of 2022 instead. Specific decisions on the dates are to be posted at https://dimag.ibs.re.kr/seymour70/ when the situation clarifies. \nConference Website: https://dimag.ibs.re.kr/seymour70/ \nSponsors: \n\nIBS Discrete Mathematics Group.\nLIP\, ENS de Lyon\, France.\nDepartment of Mathematics\, Princeton University.
URL:https://dimag.ibs.re.kr/event/seymour-is-seventy/
LOCATION:ENS de Lyon\, Lyon\, France
CATEGORIES:Workshops and Conferences
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