WELCOME

Curriculum Vitae

• 13 March 1982, Daegu, Korea.

• Toric topology, Transformation group theory
• Combinatorial topology
• Algebraic combinatorics
• Summary of Research Achievements 5/2010 (1/2009)
• MathSciNet (ID 857177)

• 9/2009 - present : JSPS Postdoctoral Research Fellow, Department of Mathematics, Osaka City University, Japan (Host: Prof. Mikiya Masuda)
• 3/2009 - 8/2009 : BK21 Post Doctor in Department of Mathematical Sciences at KAIST

• 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

• 9/2009 - 8/2011 : JSPS Postdoctoral Research Fellowship, Department of Mathematics, Osaka City University (host: Prof. Mikiya Masuda).

Publication List

You can read all (earler version of) research papers on arXiv freely, and you can read the MathSciNet review if you click the title of papers. The papers with * mark are non-refereed papers.

• [1] Suyoung Choi, Dong Youp Suh, Properties of Bott manifolds and cohomological rigidity, to appear in Algebr. Geom. Topol. arXiv:0912.3054
• [2] Suyoung Choi, Jang Soo Kim, Combinatorial rigidity of 3-dimensional simplicial polytopes, to appear in Int. Math. Res. Not. IMRN. arXiv:1002.0828.
• [3] Suyoung Choi, Taras E. Panov, Dong Youp Suh, Toric cohomological rigidity of simple polytopes, J. London Math. Soc. 82(2), (2010), 343--360. arXiv:0807.4800
• [4] Suyoung Choi, The number of orientable small covers over cubes, Proc. Japan Acad., 86, Ser. A. (2010), no.6, 97--100. arXiv:0812.3861
• [5] 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. arXiv:0902.2444
• [6] Suyoung Choi, Mikiya Masuda, Dong Youp Suh, Topological classification of generalized Bott towers, Trans. Amer. Math. Soc. 362 (2010), 1097--1112. arXiv:0807.4334.
• [7] Suyoung Choi, Mikiya Masuda, Dong Youp Suh, Quasitoric manifolds over a product of simplices, Osaka J. Math. 47 (2010), 109--129. arXiv:0803.2749.
• [8]* Suyoung Choi, Counting on real Bott manifolds, RIMS Kokyuroku, 1690 (2009), 69--71.
• [9] Suyoung Choi, The number of small covers over cubes, Algebr. Geom. Topol. 8 (2008), 2391--2399. arXiv:0802.1982.
• [10]* Suyoung Choi, Small covers over cubes, Trend in Math. 10 (2008), no. 1, 81--83.

Research Submitted Preprints

• [11] Suyoung Choi, Torus actions on cohomology generalized Bott manifolds, will be updated soon.
• [12] Suyoung Choi, Mikiya Masuda, Sang-il Oum, Classification of real Bott manifolds and acyclic digraphs, see arXiv:1006.4658 submitted.
(An improved version of the preprint "Real Bott manifolds and acyclic digraphs", arXiv:1002.4704 )
• [13] Suyoung Choi, Seonjeong Park, Dong Youp Suh, Topological classification of quasitoric manifolds with second Betti number $2$, see arXiv:1005.5431 submitted.
• [14] Suyoung Choi, Mikiya Masuda, Classification of Q-trivial Bott manifolds, see arXiv:0912.5000 submitted
• [15] Suyoung Choi, Shintaro Kuroki, Topological classification of torus manifolds which have codimension one extended G-actions, see arXiv:0906.1335 submitted

Research Preprints

• [16] Suyoung Choi, Dong Youp Suh, Strong cohomological rigidity of a product of projective spaces, see arXiv:0912.4791

Activities

2011
• 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, Alberta, 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
• The 37th PNU-POSTECH Algebraic Combinatorics Seminar, 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
• Title : Properties of Bott tower (Presentation)
• 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)

2007
• Osaka City University Summer School on symplectic Geometry and toric topology, Osaka City University, Osaka, Japan, 17th-27th. July, 2007
• Title : The cohomology ring and Bott tower structure

• Co-organize Toric Topology Seminar in Osaka, 2009

• 4/2010 : Okayama University, Okayama, Japan
• 2/2010 : KAIST, Daejeon, Korea
• 3/2009 : Osaka City University, Osaka, Japan
• 1/2008 : Fudan University, Shanghai, China
• 1/2007 : Osaka City University, Osaka, Japan

• Teaching assistant, various courses in Math, KAIST, 3/2003 - 2/2008
• Teaching assistant, R&E project, 2005. (with Prof. Dong Youp Suh)
• Teaching assistant, R&E project, 2003. (with Prof. Jin Hong Kim)
• Teaching assistant, Korea Mathematical Olympiad Summer School, 6/2000
• Teaching assistant, Korea Mathematical Olympiad Winter School, 1/2001, 1/2002