Suyoung CHOI
Curriculum Vitae
Date and place of birth:
- 13 March 1982, Daegu, Korea.
Research Topic
- Toric topology, Transformation group theory
- Combinatorial topology
- Algebraic combinatorics
- Topological Data Analysis
Database
Work Experiences
- Associate Vice President for Admissions, Ajou University. (1 Aug 2022 -- 31 Jul 2024 (current))
- Director, Science Education Center for Gifted Student, Ajou University. (1 Mar 2019 -- 28 Feb 2023 (current))
- Professor, Department of Mathematics, Ajou University. (1 Mar 2020 -- )
- Chair, Department of Mathematics, Ajou University. (1 Mar 2020 -- 28 Feb 2022)
- Associate Professor, Department of Mathematics, Ajou University. (1 Mar 2015 -- 28 Feb 2020)
- Assistant Professor, Department of Mathematics, Ajou University. (1 Mar 2011 -- 28 Feb 2015)
- JSPS Postdoctoral Research Fellow, Department of Mathematics, Osaka City University. (1 Sep 2009 -- 19 Feb 2011)
- BK21 Post Doctor in Department of Mathematical Sciences, KAIST. (1 Mar 2009 -- 31 Aug 2009)
Math Community Services
Education
- 3/2003 - 1/2009 : KAIST, Integrated M.S. & Ph.D. course, in Mathematics (Advisor: Prof. Dong Youp Suh)
- Thesis : Properties determined by Cohomology ring in Toric Topology
- 3/2000 - 2/2003 : KAIST, Bachelor
of Science in Mathematics (magna cum laude)
- 3/1998 - 2/2000 : Daegu Science High School
- 3/1995 - 2/1998 : Gyeongsin Middle School
Awards
- 30th Annual Excellent Paper Award, The Korean Federation of Science and Technology Societies(KOFST), 3 July 2020 (Scrap 1 )
- 2013 Sangsan Prize for young Mathematicians, The Korean Mathematical Society, 25 October 2013 (Scrap 1 2)
- TJ Park Science Fellowship (청암 과학 펠로 신진교수), POSCO TJ Park Foundation, 1 November 2012 (Scrap 1)
- JSPS Postdoctoral Research Fellowship, Japan Society for the Promotion of Science, 1 September 2009
Publication List
The papers with * mark are non-refereed papers.
Publications in Mathematics
2022+
- [39] Suyoung Choi, Mathieu Vallée, An algorithmic strategy for finding characteristic maps over wedged simplicial complexes, Pacific J. Math., to appear. arXiv:2111.07298
- [38] Suyoung Choi, Mathieu Vallée, Cohomological rigidity of the connected sum of three real projective spaces, Proc. Steklov Inst. Math., 317, to appear.
2021
- [37] Li Cai, Suyoung Choi, Integral cohomology groups of real toric manifolds and small covers, Mosc. Math. J., 21 (3), 467--492
2020
- [36] Li Cai, Suyoung Choi, Hanchul Park, On the KO-groups of toric manifolds, Algebr. Geom. Topol., 20 (2020) 2589--2607
- [35] Suyoung Choi, Hanchul Park, Multiplicative structure of the cohomology ring of real toric spaces, Homology Homotopy Appl., 22 (2020), no. 1, 139--157.
2019
- [34] Suyoung Choi, Shizuo Kaji, Hanchul Park, The cohomology groups of real toric varieties associated to Weyl chambers of type C and D, Proc. Edinb. Math. Soc., 62 (2019), 861--874.
- [33] Soojin Cho, Suyoung Choi, Shizuo Kaji, Geometric representations of finite groups on real toric spaces, J. Korean Math. Soc., 56 (2019), no. 5, 1265--1283.
(This paper was selected as the best Korean mathematical paper by KOFST in 2019.)
- [32] Suyoung Choi, Hanchul Park, Small covers over wedges of polygons, J. Math. Soc. Japan, 71 (2019), no. 3, 739--764.
- [31] Suyoung Choi, Kyoungsuk Park, Example of C-rigid polytopes which are not B-rigid, Math. Slovaca, 69 (2019), no. 2, 437--448.
2017
- [30] Suyoung Choi, Seonjeong Park, Strong cohomological rigidity of toric varieties, Proc. Roy. Soc. Edinburgh Sect. A.147 (2017), no. 5, 971--992.
- [29] Suyoung Choi, Boram Park, Hanchul Park, The Betti numbers of real toric varieties associated to Weyl chambers of type B, Chinese Ann. Math. Ser. B. 38 (2017), no. 6, 1213--1222.
- [28] Suyoung Choi, Hanchul Park, Wedge operations and torus symmetries II, Canad. J. Math. 69 (2017), no. 4, 767--789.
- [27] Suyoung Choi, Hanchul Park, On the cohomology and their torsion of real toric objects, Forum Math. 29 (2017), no. 3, 543--553.
- [26] Suyoung Choi, Hanchul Park, Wedge operations and a new family of projective toric manifolds, Israel J. Math. 219(1) (2017), 353--377.
- [25] Suyoung Choi, Boram Park, Seonjeong Park, Pseudograph and its associated real toric manifold, J. Math. Soc. Japan, 69(2) (2017), 693--714.
- [24] Suyoung Choi, Mikiya Masuda, Sang-il Oum, Classification of real Bott manifolds and acyclic digraphs Trans. Amer. Math. Soc. 369 (2017), 2987--3011.
- [23] Suyoung Choi, Shizuo Kaji, Stephen Theriault, Homotopy decomposition of a suspended real toric space, Bol. Soc. Mat. Mex. (3) 23 (2017), no. 1, 153--161. (the memorial volume for Professor Gitler)
2016
- [22] Suyoung Choi, Seonjeong Park, Projective bundles over smooth compact toric surfaces, Internat. J. Math. 27 (4) (2016), 1650032, 30 pp.
- [21] Suyoung Choi, Hanchul Park, Wedge operations and torus symmetries, Tohoku Math. J. (2), 68(1) (2016), 91--138.
2015
- [20] Suyoung Choi, Classification of Bott manifolds up to dimension 8, Proc. Edinb. Math. Soc. (2), 58(3) (2015), 653--659.
- [19] Suyoung Choi, Mikiya Masuda, Satoshi Murai, Invariance of Pontrjagin classes for Bott manifolds, Algebr. Geom. Topol., 15(2) (2015), 965--986.
- [18] Suyoung Choi, Hanchul Park, A new graph invariant arises in toric topology, J. Math. Soc. Japan, 67(2) (2015), 699-720.
2012
- [16] Suyoung Choi, Mikiya Masuda, Classification of Q-trivial Bott manifolds, J. Symplectic Geom. 10(3) (2012), 447--462.
- [15] Suyoung Choi, Dong Youp Suh, Strong cohomological rigidity of a product of projective spaces, Bull. Korean Math. Soc. 49(4) (2012), 761--765.
- [14] Suyoung Choi, Seonjeong Park, Dong Youp Suh, Topological classification of quasitoric manifolds with second Betti number 2, Pacific J. Math. 256(1) (2012), 19--49.
2011
- [13] Suyoung Choi, Mikiya Masuda, Dong Youp Suh, Rigidity problems in toric topology, a survey, Proc. Steklov Inst. Math., 275 (2011), 177--190.
- [12] Suyoung Choi, Shintaro Kuroki, Topological classification of torus manifolds which have codimension one extended actions, Algebr. Geom. Topol. 11(5) (2011), 2655--2679.
- [11]* Suyoung Choi, On Petrie's theorem for torus manifolds, RIMS Kokyuroku, 1732 (2011), 95--100.
- [10] Suyoung Choi, Jang Soo Kim, Combinatorial rigidity of 3-dimensional simplicial polytopes, Int. Math. Res. Not. IMRN. 2011(8), (2011), 1935--1951.
- [9] Suyoung Choi, Dong Youp Suh, Properties of Bott manifolds and cohomological rigidity, Algebr. Geom. Topol. 11(2), (2011), 1053--1076.
2010
- [8] Suyoung Choi, Taras E. Panov, Dong Youp Suh, Toric cohomological rigidity of simple polytopes, J. London Math. Soc. 82(2), (2010), 343--360.
- [7] Suyoung Choi, The number of orientable small covers over cubes, Proc. Japan Acad., 86, Ser. A. (2010), no.6, 97--100.
- [6] Suyoung Choi, Jang Soo Kim, A combinatorial proof of a formula for Betti numbers of a stacked polytope, Electron. J. Combin. 17(1) (2010), #R9.
- [5] Suyoung Choi, Mikiya Masuda, Dong Youp Suh, Topological classification of generalized Bott towers, Trans. Amer. Math. Soc. 362 (2010), 1097--1112.
- [4] Suyoung Choi, Mikiya Masuda, Dong Youp Suh, Quasitoric manifolds over a product of simplices, Osaka J. Math. 47 (2010), 109--129.
2009
- [3]* Suyoung Choi, Counting on real Bott manifolds, RIMS Kokyuroku, 1690 (2009), 69--71.
2008
- [2] Suyoung Choi, The number of small covers over cubes, Algebr. Geom. Topol. 8(4) (2008), 2391--2399.
- [1]* Suyoung Choi, Small covers over cubes, Trend in Math. 10 (2008), no. 1, 81--83.
Submitted Preprints in Mathematics
- [1] Suyoung Choi, Taekgyu Hwang, Gromov width of symplectic toric manifolds associated with graphs, arXiv:2011.09729 .
Publications in other areas
- [3] Ho Kyoung Ko, Suyoung Choi, Shizuo Kaji, Who Has Given up on Mathematics? A data analysis, Asia Pacific Education Review (2021) 22:699--714
- [2] Suyoung Choi, Ahyun Goo, Ho Kyoung Ko, The Case of Polymath Activities Using Collective Intelligence, East Asian Mathematical journal, 37 (2021), No. 4, 523--541
- [1] Ho Kyoung Ko, Hyung Won Kim, Shizuo Kaji, Suyoung Choi, Elementary school students who give up on learning mathematics: Correlations with non-cognitive learner characteristics, J. Korea Soc. Math. Ed. Ser. C, 20 (2017), No. 2, 143--151.
Submitted Preprints in other areas
Publications : Books
- [4] 오일러의 보석 (Translation of Euler's gem written by David Richeson), ISBN 9791125102595, Kyowoo, 2018.
- [3] 드론, 수학으로 날다!, ISBN 9791125101994, Kyowoo, 2017.
- [2] 수학1, 수학2, 수학3 (Government-authorized Textbooks for middle school students), Kyohak, 2015개정 교육과정, 2017.
- [1] 수학1, 수학2, 수학3 (Government-approved Textbooks for middle school students), Kyohak, 2009개정 교육과정, 2013.
Patents
- [1] 위상 데이터 분석(TDA) 기법을 이용한 차량의 추돌 가능성 예측 방법 및 장치(Crash probability prediction method and apparatus for vehicle using TDA technique), Korea Patent 10-2020-0025618, filed in 28 Feb 2020, patent pending
Selected Research Grants
Individual Research Grant (selected) : Pure Mathematics
- 3/2019 - 2/2024 : Basic Science Research Program (중견연구자 지원사업), the national Research Foundation of Korea(NRF), about 160,000 USD per year
- Research Title : Establishment of real toric topology and classification of real toric manifolds
- 11/2016 - 10/2019 : Basic Science Research Program (일반연구자 지원사업(기본-후속)), the national Research Foundation of Korea(NRF), about 50,000 USD per year
- Research Title : Classification of topological spaces admitting torus actions
- 1/2013 - 12/2014 : TJ Park Science Fellowship (청암 과학 펠로), POSCO TJ Park Foundation, about 35,000 USD per year
- Research Title : Classification of toric manifolds
- 9/2012 - 8/2014 : Basic Science Research Program (일반연구자 지원사업(모험)), the national Research Foundation of Korea(NRF), about 50,000 USD per year
- Research Title : Classification of aspherical manifolds and real toric manifolds
- 9/2011 - 8/2016 : Basic Science Research Program (일반연구자 지원사업(기본)), the national Research Foundation of Korea(NRF), about 35,000 USD per year
- Research Title : Classification of topological spaces admitting torus actions
- 9/2009 - 2/2011 : JSPS Postdoctoral Research Fellowship, Japan Society for the Promotion of Science, September 1, 2009
- Research Title : Toric Topology and Combinatorics
Individual Research Grant (selected) : Industrial Mathematics
- 4/2021 - 12/2022 : 국토교통기술사업화지원사업, 국토교통부
- 10/2018 - 12/2019 : R&D Project (창업성장기술개발사업), Ministry of SMEs and Startups, about 50,000 USD
- Joint work with (주)HBC
- Research Title : Detection of buried objects using Deep learning
- 7/2017 - 7/2018 : R&D Project, (주)HBC, about 50,000 USD
- Research Title : Research on theory of prediction technology for the information of steel tower foundation using electrical resistivity exploration
- 12/2016 - 8/2017 : R&D Project, (주)GK Engineering, about 10,000 USD
- Research Title : Research on sinkhole exploration by image and big-data analysis
Individual Research Grant (selected) : Education
- 4/2021 - 7/2021 : 과학기술인력양성 사업, 과학기술정보통신부
- Research Title : 수학인재양성 연구센터 운영방안 기획 연구
- 11/2019 - 5/2020 : 2019 과학영재교육정책기획연구 사업, 과학기술정보통신부
- Research Title : A preliminary study on the STEM education systmem for leading 4th Industrial revolution
Group Research Grant (selected) : Industrial Mathematics
- 10/2019 - 3/2022 : 산업전문인력양성사업 (P.I.: Prof. Bong Sup Song (Ajou Univ.)), 한국산업기술진흥원
- Research Title : 미래형자동차 R&D 전문인력양성사업
- 8/2013 - 12/2013 : R&D Project, (주)Daekyo, P.I.: Prof. Ho Kyoung Ko (Ajou Univ.)
- Research Title : Smart learning on Mathematics
Talks
Conference and workshop presentations
[Click to open]
2022
- The 6th Korea Toric Topology Workshop, KAIST, Daejeon, Korea, July 11--13, 2022
- Title : Industrial math in civil engineering
- 2022 KMS Spring Meeting, Online, Korean Mathematical Society, Korea, April 28--29, 2022
- Title : Toric colorizable PL spheres with a few vertices
- Toric Topology 2022 in Osaka, Online, OCAMI (Osaka City University), Osaka, Japan, March 23--25, 2022
- Title : Cohomological rigidity for Bott manifolds
2021
- Colloquium talk at Ulsan University, Ulsan Univ., Ulsan, Korea, November 11, 2021
- Title : 위상적데이터분석(TDA)의 산업수학에서의 활용
- Topology of torus actions and related topics, Online, Sirius Mathematics Center, Sochi, Russia, October 25--29, 2021
- Title : Puzzle algorithm for finding mod $2$ characteristic maps over wedged simplicial complexes
- International polyhedral product seminar, Online, Princeton Univ.,USA, October 21, 2021
- Title : On the classification of real toric manifolds
2020
- The 8th East Asian Conference on Algebraic Topology(EACAT), VIASM and VNI, Hanoi, Vietnam, December 14--18, 2020
- (Plenary talk) Title : TBA
- Topology and geometry of group actions, Online conference, Russia, November 18-22, 2020
- Title : Gromov width of symplectic toric manifolds associated with graph associahedra
- 2020 KMS Annual Meeting, Virtual conference, Korea, October 23-24, 2020
- Title : real toric manifold, and its cohomology
- Workshop on Polyhedral Products in Homotopy Theory, The Fields Institute, Toronto, Canada, January 20--24, 2020
- Title : Topology of real moment-angle complexes and real toric spaces
2019
- Toric Topology 2019 in Okayama, Okayama University of Science, Okayama, Japan, November 18 -- 21, 2019
- Title : On the classification of (real) toric manifolds of Picard number 4
- The 3rd Pan Pacific International Conference on Topology and Applications (PPICTA), Xiangyu Hotel, Chengdu, China, November 8--13, 2019
- Title : Topology of real toric manifolds and its application
- 2019 International conference of The Kangwon-Kyungki Mathematical Society, Daegu Gyeongbuk Design Center, Daegu, Korea, June 28 -- 30, 2019
- Title : Small cover and cohomological rigidity problem
- Mini workshop on toric topology and related topics, Korea Chamber of Commerce and Industry, Seoul, Korea, May 27, 2019
- Title : On the real toric spaces
- The 6th International Electric Vehicle Expo, private session organized by Ajou Univ., ICC Jeju, Jeju, Korea, May 7 -- 11, 2019
- Title : Topological Data Analysis on Object Detection
2018
- Ajou Data Science Forum - Data Science in Finance, Ajou University, Suwon, Korea, December 14, 2018
- Title : Topological Data Analysis on Image classification
- 2018 Joint Meeting of the Korean Mathematical Society and the German Mathematical Society, COEX, Seoul, Korea, October 3--6, 2018
- Title : Torsions in the cohomology of real toric manifold
- 88th KPPY Combinatorics Workshop, Yeungnam Univ., Daegu, Korea, August 31, 2018
- Title : Betti numbers of real toric varieties associated to Weyl chambers
- Invited talk, IBS-CGP, Pohang, Korea, August 30, 2018
- Title : On the topology of real toric manifolds
- Invited talk, Ryukyu Univ., Nakagami-gun, Okinawa, Japan, July 30, 2018
- Title : topology of real toric spaces
- 20th KIAS Combinatorics Workshop, Duksung Women's Univ., Seoul, Korea, June 1--2, 2018
- Weyl group action on real toric manifolds and its geometric representations
- Algebraic Topology, Combinatorics, and Mathematical Physics, Steklov Mathematical Institute, Moscow, Russia, May 24--30, 2018
- Title : Cohomology formulae of real toric spaces
- 2018 KMS Spring Meeting, Kyung Hee Univ., Seoul, Korea, April 20--22, 2018
- Title 1 : Cohomology of real toric spaces
- Title 2 : Industrial math on civil engineering
- Colloquium talk at Ajou University, Ajou Univ., Suwon, Korea, April 13, 2018
- Title : The cohomology rings of real toric spaces
- Special Lectures at Sungkyunkwan University, Sungkyunkwan Univ., Suwon, Korea, April 13, 2018
- Title : Topology of real toric varieties
- Invited talk at Osaka City University, Osaka City Univ., Osaka, Japan, February 26, 2018
- Title : Cohomology of real toric spaces
2017
- Algebraic Topology Seminar, Princeton Univ., Princeton, NJ, USA, November 30, 2017
- Title : Multiplicative structure of the cohomology of real toric spaces
- Invited talk, Western Univ., London, ON, Canada, November 22, 2017
- Title : Introduction to real toric spaces
- Encounter in Topology 'n Algebra,
Scuola Superiore di Catania, Catania, Italy, May 31 -- June 4, 2017
- Title : Finite group action on real toric variety and its geometric representations
- Colloquium talk at UTRGV, The Univ. of Texas Rio Grande Valley, Edinburg, Texas, USA, April 27, 2017
- Title : Topology and combinatorics of real toric manifolds
2016
- 79th KPPY Combinatorics Workshop, Kyungpook National Univ., Daegu, Korea, October 8, 2016
- Title : Acyclic digraphs and real Bott manifolds
- Invited seminar, Osaka City University, Osaka, Japan, July 27, 2016
- Title : Geometric representation of Weyl groups on the corresponding real toric manifolds
- Colloquium talk at KAIST, KAIST, Daejeon, Korea, March 10, 2016
- Title : Topology of real toric spaces
- Invited series seminar, Fudan University, Shanghai, China, January 6--7, 2016
- Title : Topology and Combinatorics of real toric spaces
2015
- The 6th East Asian Conference on Algebraic Topology(EACAT), NIMS, Daejeon, Korea, November 30 -- December 4, 2015
- Title : Homology of real toric varieties associated to Weyl groups
- International Open Chinese-Russian Conference -- Torus Actions: Topology, Geometry and Number Theory, Chinese Academy of Sciences, Beijing, China, October 26--29, 2015
- Title : The Betti numbers of real toric varieties associated to Weyl groups of regular types
- Invited series seminar, KAIST, Daejeon, Korea, October 7, 14, 21, 2015
- Title : Topology and Combinatorics of real toric spaces
- Combinatorial Constructions in Topology, Univ. of Regina, Regina, SK, Canada, August 17--21, 2015
- Title : A new family of projective toric manifolds
- 2015 KMS Spring Meeting, Pusan National Univ., Pusan, Korea, April 24--26, 2014
- Title : On the topology of real toric spaces
- Geometry and Topology, Princeton Univ., Princeton, NJ, USA, March 18--21, 2015
- Title : Construction of a small cover with odd torsion
- 7th KIAS Combinatorics Workshop, KIAS, Seoul, Korea, March 13--14, 2015
- Title : Small cover and puzzle
- Perspectives in Lie Theory - session : Algebraic topology, geometric and combinatorial group theory, Centro di Ricerca Matematica - Ennio De Giorgi, Pisa, Italy, February 8--28, 2015
- Title : Cohomology of small cover and its torsion
- Topology Seminar, Univ. of Southampton, Southampton, UK, February 2, 2015
- Title : The cohomology and their torsion of real toric manifolds
2014
- 2014 KAIST CMC Discrete Math Workshop, KAIST, Daejeon, Korea, December 10--12, 2014
- Title : The Betti numbers of real toric varieties corresponding to generalized graph associahedra
- Brown Bag Lectures at Ajou University, Ajou Univ., Suwon, Korea, September 16, 2014
- Colloquium talk at Sogang University, Sogang Univ., Suwon, Korea, September 11, 2014
- Title : Classification of toric varieties
- Seoul ICM 2014, COEX, Seoul, Korea, August 13--21, 2014
- Title 1 (Topology) : Topology of generalized Bott manifolds
- Title 2 (Combinatorics): Graph invariants arising from toric topology
- ICM 2014 Satellite conference : Topology of torus actions and applications to geometry and combinatorics, Daejeon Convention Center, Daejeon, Korea, August 7--11, 2014
- Title : On the classification of toric varieties
- 64th KPPY Combinatorics Workshop, Kyungpook National Univ., Daegu, Korea, June 20, 2014
- Title : The a-number of graphs and the topology of small covers
- Invited Seminar, NIMS, Daejeon, Korea, June 3, 2014
- Title : Topology of small covers
- 2014 KMS Spring Meeting, Gangneung-Wonju National Univ., Gangneung, Korea, April 24--26, 2014
- Title : Cohomological rigidity problem for toric manifolds
- The 12th Korea-Japan Workshop on Algebra and Combinatorics, KAIST, Daejeon, Korea, January 23--25, 2014
- Title : Enumeration of toric objects and wedge operation on simplicial complexes.
2013
- The 5th East Asian Conference on Algebraic Topology (EACAT), Chinese Academy of Sciences, Beijing, China, December 2--6, 2013
- Title : On the cohomology of real toric manifolds
- KAIST Discrete Math Seminar, KAIST, Daejeon, Korea, November 18, 2013
- Title : The rational Betti number of small covers and its combinatorics
- International Open Chinese-Russian conference "Torus Actions: Topology, Geometry and Number Theory", Pacific National Univ., Khabarovsk, Russia, September 2--7, 2013
- Title : Classification of torus manifolds and wedge operations
- Algebraic Combinatorics Seminar, KIAS, Seoul, Korea, August 26, 2013
- Title : The number of real toric varieties
- 58th KPPY Combinatorics Workshop, Yeungnam Univ., Daegu, Korea, August 21, 2013
- Title : Combinatorial description of Betti numbers of toric varieties
- 2013 Combinatorics Workshop, NIMS, Daejeon, Korea, August 7--9, 2013
- Title : Introduction to the a-number of graphs and hypergraphs
- The Asian Mathematical Conference (AMC) 2013 , BEXCO, Busan, Korea, June 30 -- July 4, 2013.
- Title : Wedge operations and torus symmetries
- Joint International Meeting of the AMS and the Romanian Mathematical Society, Univ. of Alba Iulia, Alba Iulia, Romania, June 27 -- 30, 2013.
- Title : Wedge operations and torus symmetries
- Algebraic Topology Seminar, Princeton Univ., Princeton, NJ, USA, February 21, 2013
- Title : Wedge operations and torus symmetries
- University of Minnesota Combinatorics Seminar, Univ. of Minnesota, Minneapolis, Minnesota, USA, February 15, 2013
- Title : A new graph invariant arises in toric topology : rational Betti numbers of real toric varieties arising from graphs
- Invited Seminar, Osaka City Univ., Osaka, Japan, January 23, 2013
- Title : Wedge operation and symmetry of manifolds
2012
- 건국-아주-인하 수학과 연합세미나, Konkuk Univ., Seoul, Korea, December 17, 2012
- Title : Rational Betti number of generalized real Hassenberg varieties and new graph invariants
- Toric Topology 2012 in Osaka, Osaka City Univ., Osaka, Japan, November 16--19, 2012
- Title : On the toric rigidity of simple polytopes
- Colloquium talk at Sungkyunkwan University, Sungkyunkwan Univ., Suwon, Korea, October 18, 2012
- Title : Topology of real Bott manifolds
- 2012 Combinatorial workshop, Chonnam National Univ., Gwangju, Korea, August 9, 2012
- Title : Polytopes and combinatorics in toric topology
- 조선대학교 수학교육과 특강, Chosun Univ., Gwangju, Korea, June 21, 2012
- Title : Catalan numbers and associahedra
- 2012 The KMS Spring Meeting, Sookmyung Women's Univ., Seoul, Korea, April 28, 2012
- Title : Different moment-angle manifolds arising from two polytopes having the same bigraded Betti numbers
- Princeton-Rider Workshop on Homotopy Theory and Toric Spaces (sponsored by Algebraic Topology Seminar), Rider Univ., Lawrenceville, NJ, USA, February 23--25, 2012
- Title : Toric rigidity of simple polytopes and moment-angle manifolds
- Algebraic topology seminar at Princeton University, Princeton Univ., Princeton, NJ, USA, February 16, 2012
- Title : Cohomological rigidity problems in Toric topology
2011
- 건국-아주-인하 수학과 연합세미나, Inha Univ., Incheon, Korea, December 9, 2011
- Title : Classification problems in toric topology
- Toric Topology 2011 in Osaka, Osaka City Univ., Osaka, Japan, November 28--30, 2011
- Title : Invariance of Pontrjagin classes of torus manifolds
- International Conference "Toric Topology and Automorphic Functions", Pacific National Univ., Khabarovsk, Russia, September 5--10, 2011
- Title : Classification of Bott manifolds, and cohomological rigidity problems
- Workshop of Department of Mathematical Sciences, KAIST, Lotte Resort, Buyeo, Korea, July 26--27, 2011
- Title : Topology of toric manifolds
- Conference: Toric Methods in Homotopy Theory and Related Subjects, Queens Univ., Belfast, UK, July 18-20, 2011
- Title : Invariance of Pontrjagin classes of generalized Bott manifolds
- Invited Seminar: Program of Low dimensional topology seminar, Max Planck Institute for Mathematics, Bonn, Germany, July 11, 2011
- Title : Topological Classification of Bott manifolds
- Colloquium talk at Ajou University, Ajou Univ., Suwon, Korea, June 10, 2011
- Title : Introduction to toric topology and cohomological rigidity problems
- Invited Seminar, Topology regular seminar, Seoul National Univ., Seoul, Korea, May 17, 2011
- Title : Classification of Bott manifolds
- 2011 The Korean Mathematical Society Spring Meeting, Korea Univ., Seoul, Korea, April 30, 2011
- Title : On Petrie's conjecture for torus manifolds
- Workshop celebrating the retirement of Professor Kitada, Kyoto, Japan, January 12, 2011
- Title : On Petrie's conjecture for torus manifolds
2010
- Invited Seminar, Ajou Univ., Suwon, Korea, December 10, 2010
- Title : Topology of torus manifolds
- The 37th Symposium of Transformation Groups, Kyushu Univ., Kyushu, Japan, November 23 - 24, 2010
- Title : Cohomological rigidity of polytopes in toric topology
- Colloquium talk at Osaka City University, Osaka City Univ., Osaka, Japan, November 17, 2010
- Title : Toric topology and polytope theory
- Topological methods in toric geometry, symplectic geometry and combinatorics, BIRS, Banff, AB, Canada, November 7 - 17, 2010
- Title : Torus actions on cohomology generalized Bott manifolds
- The Homotopy Theory Symposium 2010, Kyushu Univ., Kyushu, Japan, October 31 - November 3, 2010
- Title : Torus actions on cohomology Bott manifolds
- Workshop on Geometry & Topology 2010, Univ. of Fribourg, Fribourg, Switzerland, September 16-18, 2010
- Title : Real Bott manifolds and acyclic digraphs
- Group Actions in Topology and Analysis - 4th GAF Conference, Univ. of Milano-Bicocca, Milan, Italy, September 13 - 17, 2010
- Title : Invariance of Pontrjagin classes of Bott manifolds
- RIMS conference 2010 Transformation Groups and Surgery Theory , RIMS, Kyoto, Japan, August 30 - September 3, 2010
- Title : Invariance of Pontrjagin classes of Bott manifolds
- The International Conference
"GEOMETRY, TOPOLOGY, ALGEBRA and NUMBER THEORY, APPLICATIONS"
, Steklov Mathematical Institute, Moscow, Russia, August 16 - 20, 2010
- Title : Real Bott manifolds and acyclic digraphs
- The 3rd Topology Workshop, KAIST, Daejeon, Korea, August 3-4, 2010
(Poster)
- Title : Real Bott manifolds and acyclic digraphs
- International Conference on Algebraic and Geometric topology, Capital Normal Univ., Beijing, China, June 28- July 2, 2010
- Title : Invariance of Pontrjagin classes of Bott manifolds
- Workshop on Toric Topology and Related Topics, Fudan Univ., Shanghai, China, May. 2-5, 2010
- Title : The classification of four-stage Bott manifolds
- Invited Seminar, Okayama Univ., Okayama, Japan, April 13, 2010
- Title : Cohomological rigidity problem and Q-trivial Bott manifold
- Toric Topology 2010 in Himeji, Egret-Himeji, Himeji, Japan, April 10-11, 2010
- Title : Homology group of moment angle complex of certain polytopes
- Ikuta Seminar on Toric Topology, Meiji Univ., Tokyo, Japan, March 6-7, 2010
- Title : Invariant of real Bott manifolds
- KAIST Toric Topology Workshop 2010, KAIST, Daejeon, Korea, February 22-26, 2010
- Title : Combinatorial rigidity of 3-dimensional simplicial polytopes
- 37th KPP Combinatorics Workshop, Kyungpook National Univ., Daegu, Korea, January 16, 2010
- Title : Cohomological rigidity of reducible simplicial polytopes
2009
- The 3rd East Asia Conference on Algebraic Topology, Vietnam National Univ., Hanoi, Vietnam, Dec. 14-18, 2009
- Title : Classification of Q-trivial Bott manifolds
- Toric Topology Seminar in Osaka, 2009, Osaka City University, Osaka, Japan, Dec. 7-9, 2009
- Title : Classification of Q-trivial Bott manifolds
- Bratislava Topology Symposium "Group Actions and Homogeneous Spaces", Comenius University, Bratislava, Slovakia, Sep. 7-11, 2009
- Title : Real Bott manifolds and acyclic digraphs
- Transformation groups from a new viewpoint, RIMS, Kyoto, Japan, Aug. 17-20, 2009
- Title : The number of small covers over cubes
- The Korean Mathematical Society 09 Spring Symposium,
Ajou University, Suwon, Korea, 25. April, 2009
- Title : Tor-algebra and Cohomological Rigidity of Simple Polytopes with Few Facets
- Korea-Japan Workshop on Algebra and Combinatorics, Pusan National Univ., Pusan, Korea, Feb. 9-10, 2009
- Title : Tor-algebra and Cohomological rigidity of simple polytopes with few facets
- KAIST combinatorics Seminar, KAIST, Daejon, Korea, Feb. 4-5, 2009
- Title : Cohomological rigidity of simple polytopes with few facets
- 2009 ASARC Workshop at Daecheon, Daecheon, Korea, Jan. 29-31, 2009
- Title : On the topological classification of toric manifolds
2008
- The 2nd East Asia Conference on Algebraic Topology, National Univ. of Singapore, Singapore, Singapore, Dec. 15-19, 2008
- Title : Properties of Bott towers in Toric Topology
- The 28th PNU-POSTECH Algebraic Combinatorics Seminar, Pusan National Univ., Pusan, Korea, 15th November 2008
- Title : Combinatorics on bigraded Betti numbers of simple polytopes
- 2008 Global KMS International Conference, Jeju Internationl Convention Center, Jeju, Korea, 23th-25th October 2008
- Title : Toric cohomological rigidity of simple polytopes (Presentation)
- 2008 ASARC-Conference on transformation group theory, KAIST, Daejon, Korea, 29th August 2008
- 2008 Workshop on Combinatorics,Sungkyunkwan Univ, Suwon, Korea, 7th-8th August 2008
- Title : Cohomological Rigidity of simple polytopes (Presentation)
- New Horizons in Toric Topology,University of Manchester, Manchester, UK, 7th-11th July 2008
- Title : The number of small covers over cubes (Poster) A prizewinning work
- Title : Toric cohomological rigidity of simple polytopes (Poster)
- The Korean Mathematical Society 08 Spring Symposium,
Keimyoung University, Daegu, Korea, 26. April, 2008
- Title : The number of small covers over cubes (Presentation)
Activities
Activities : Conference organization
- Co-organize The 6th Korea Toric Topology Workshop, Daejeon, Korea, July 11--13, 2022
- Co-organize Workshop on Artificial Intelligence for Industrrial Mathematics, The Suites hotel Jeju, Jeju, Korea, June 18--21, 2022
- Co-organize a special session (toric topology), 2021 KMS Annual Meeting, online, Korea, October 20--22, 2021
- Co-organize 2019 International Joint Conference on AI & Data Science: Mathematics and Applications, Suwon Convention Center, Suwon, Korea, November 4--5, 2019
- Co-organize Ajou-Kyushu joint workshop on Industrial Mathematics, IMI Auditorum, Kyushu University, Fukuoka, Japan, December 21--22, 2018
- Co-organize Optimization and Learning Tutorial 2018, Ajou University, Suwon, Korea, March 24--31, 2018
- Co-organize The 4th Korea Toric Topology Winter Workshop, Jeju, Korea, December 26--29, 2016
- Co-organize The 3rd Korea Toric Topology Winter Workshop, Gyeongju, Korea, December 28--30, 2015
- Local organizer of The 6th East Asian Conference on Algebraic Topology (EACAT), Daejeon, Korea, December 1--4, 2015
- Co-organize The 2nd Korea Toric Topology Winter Workshop, Jeju, Korea, December 26--28, 2014
- Local organizer of 2014 Combinatorics workshop, Suwon, Korea, October 31--November 11, 2014
- Local organizer of ICM 2014 satellite conference : Topology of torus actions and applications to geometry and combinatorics
- Co-organize 2013 Korea Toric Topology Winter Workshop
- Organize a regular workshop on topology and combinatorics at Ajou University: Topology and Combinatorics Seminar since 2011~ current
- Co-organize Toric Topology Seminar in Osaka, 2009
Activities : IMO
- Leader of the Korea Mathematical Olympiad team at The Cyberspace Mathematical Competition (CMC), July 12--14, 2020
- Deputy Leader of the Korea Mathematical Olympiad team at the 60th International Mathematical Olympiad (IMO), Bath, UK, July 10--22, 2019
- Deputy Leader of the Korea Mathematical Olympiad team at the 59th International Mathematical Olympiad (IMO), Cluj-Napoca, Romania, July 03--14, 2018
- Deputy Leader of the Korea Mathematical Olympiad team at the 58th International Mathematical Olympiad (IMO), Rio de Janjeiroi, Brazil, July 12--23, 2017 (Scrap 1)
- Deputy Leader of the Korea Mathematical Olympiad team at the 8th Romanian Master of Mathematics (RMM), Bucharest, Romania, February 24--29, 2016
- Deputy Leader of the Korea Mathematical Olympiad team at the 56th International Mathematical Olympiad (IMO), Chiang Mai, Thailand, July 4--16, 2015 (Scrap 1)
Activities : Services in Social Media (selected)
Supervising
Supervision of Students
- Jiyeon Moon (Ph.D. March 2016 -- August 2021)
- Miyen Kang (Integrated M.S. & Ph.D. course March 2020 -- current) - Industrial Math track
- Sung Hyun Yoo (Master course. March 2020 -- current)
- Jiyoon Lee (Master course. September 2021 -- August 2022) - Industrial Math track
- Hankyoung Lee (Master course. March 2019 -- current) - Industrial Math track
- Hyuntae Jang (Master course. September 2018 -- August 2020) (P.h.D. course. September 2020 -- current)
- Taegon Kim (Master course. March 2017 -- February 2019) - Industrial Math track
- Sanggun Park (Master course. March 2012 -- February 2014)
Host for Researchers
- Xin Fu (September 2020 -- current)
- Taekkyu Hwang (September 2019 -- current)
- Dong Gyu Lee (April 2019 -- July 2019)
- Seonjeong Park (June 2018 -- August 2019), Assistent Professor, Jeonju University
- Hyowon Park (March 2014 -- August 2014)
- Hanchul Park (March 2012 -- September 2013), Assistent Professor, Jeju National University
Teaching
Regular Lectures
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2022 Fall
- 위상수학 (Topology) (MATH341)
- 응용산업수학세미나 (Seminar in Applied and Industrial Mathematics) (MATH7612) (co-teaching with Prof. Dongwook Shin)
2022 Spring
- 응용산업수학특강 (Topics in Applied Mathematics) (MATH7611)
- 산업수학프로젝트2 캡스톤디자인 (Industrial Mathematics Project 2) (MATH404)
- 위상수학 (Topology) (10156)
- 융합인재및영재교육실습 (Practicum in Converegence and Gifted Education) (EDU5197)
- 아주희망 (CAJO114)
- 수학Lab1 (Mathematics LAB1) (MATH104)
2021 Fall
- Differentail Geometry II (MATH639)
- 데이터과학과 교육문제해결 (Data Science and problem solving for education) (EDU571)
- 산업수학프로젝트1 캡스톤디자인 (Industrial Mathematics Project 1) (MATH304)
- 수학교육연습(10474)
- 교육행정연습(8292)
- 수학Lab2 (Mathematics LAB2) (MATH105)
2021 Spring
- Differentail Geometry I (MATH638)
- 수학논리및논술 (Mathematical Logic and Essay) (50171)
- 아주희망 (CAJO114)
- 수학Lab1 (Mathematics LAB1) (MATH104)
2020 Fall
- Topology (MATH341)
- Topics in Geometry (MATH735)
2020 Spring
- Elementary Discrete Modeling (MATH305)
- Topics in Applied and Industrial Mathematics (MATH7611)
- Mathematics LAB1 (MATH104)
- 아주희망 (course for freshmen) (CAJO114) (co-teaching with Prof. Uijin Jung)
- Differential Geometry (course in Graduate school of education) (11215)
2019 Winter
- Calculus II (MATH103) (co-teaching with Prof. Dongseon Hwang)
2019 Fall
- Topology (MATH341)
- Algebraic Topology II (MATH646)
- Industrial Mathematics Survey 2 (MATH672) (co-teaching with Prof. Boram Park)
- Mathematical Logic and Essay(course in Graduate school of education) (50171) (co-teaching with Prof. Ho Kyoung Ko)
2019 Spring
- Differential Geometry (MATb35)
- Algebraic Topology I (MATH647)
- Industrial Mathematics Survey 1 (MATH671)
- 아주희망 (course for freshmen) (CAJO114) (co-teaching with Prof. Youngwoo Choi)
2018 Fall
- Topics in Geometry (MATH432)
- Differential Geometry 1 (MATH638)
- Topology (course in Graduate school of education) (10156)
2018 Spring
- Calculus I (MATH102)
- Differential Geometry (MATb35)
- Topics in Topology I (MATH741)
- Differential Geometry (course in Graduate school of education) (11215)
2016 Fall
- Topology (MATH341)
- Algebraic Topology I (MATH647)
- Math Lab II (MAPLE program training course) (MATH105)
2016 Spring
- Calculus I (MATH102) for two classes
- Number theory (course in Graduate school of education) (13603)
2015 Fall
- Topology (MATH341)
- Engineering Mathematics A (MATH205)
- Topology (course in Graduate school of education) (10156)
- Identification of gifted in Mathematics (course in Graduate school of education) (50145) (co-teaching with Prof. Ho Kyoung Ko)
2015 Spring
- Engineering Mathematics A (MATH205) for two classes
- Topics in Topology I (MATH741)
- Mathematics Problem Practice 1(course in Graduate school of education) (15524)
2014 Fall
- Topics in Geometry (MATH432)
- Seminar in Topology I (MATH747)
- Mathematical Logic and Essay(course in Graduate school of education) (50171) (co-teaching with Prof. Ho Kyoung Ko)
2014 Spring
- Engineering Mathematics A (MATH205) for two classes
- Discrete Mathematics (MATH285)
- Combinatorics and graph theory (course in Graduate school of education) (22504)
- Story-telling math for gifted students in math (course in Graduate school of education) (EDU5112) (co-teaching with Prof. Ho Kyoung Ko)
2013 Fall
- Calculus II (MATH103)
- Topology (MATb41)
- Topology (course in Graduate school of education) (10156)
2013 Spring
- Calculus I (MATH102) for two classes
- Seminar in Topology II (MATH748)
- Combinatorics and graph theory (course in Graduate school of education) (22504)
2012 Fall
- Seminar in Topology I (MATH747)
- Math Programming (MATH106)
- Math Lab I (MAPLE program training course)(MATH105)
- Technology for Mathematics Education (course in Graduate school of education) (7004)
2012 Spring
- Calculus I (MATH102) for two classes
- Algebraic Topology II (MATH646)
- Combinatorics and graph theory (course in Graduate school of education) (22504)
2011 Fall
- Topology (MATH441)
- Algebraic Topology I (MATH635)
2011 Spring
- Calculus I (for freshmen) (MATH102)
- Differential Geometry I (for graduate-course students) (1711)
- Math Lab I (MAPLE program training course) (MATH104)
Last updated : 25 July 2022