Youn-Seo Choi
School of Mathematics,
Korea Institute for Advanced Study
207-43 Cheongnyangni 2-dong, Dongdaemun-gu Seou, 130-722, Korea
Phone: 82-2-958-3724 e-mail: [email protected]
Professional Positions
July. 2005 - Present Professor, Korea Institute for Advanced Study March. 2005- June 2005 Associate professor, Korea University
March. 2001 - Feb. 2005 Assistant professor, Korea University
June. 1999- Feb. 2001 Research fellow, Korea Institute for Advanced Study
Schools and Degrees
Aug. 1992- Ph.D. in Mathematics,
-May. 1999 University of Illinois at Urbana-Champaign.
Research area: Analytic Number Theory (q-Series, Mock theta functions).
Thesis Advisor: Bruce C. Berndt.
March 1989- Master in Mathemaics,
-Feb. 1992 Korea University in Seoul, Korea.
Research area: Algebraic Number Theory Thesis Advisor: In-Ho Cho.
March. 1985- Bachelor in Mathemaics,
-Feb. 1989 Korea University in Seoul, Korea.
Awards
2003 13th annual best science paper award from KOFST 1999 The Bateman Prize in Number Theory.
Academic Positions
Aug. 1998-May.1999 Teaching Assistant, University of Illinois at Urbana-Champaign Aug. 1997-July.1998 Research Assistant, University of Illinois at Urbana-Champagin.
Aug. 1995-July 1996 Research Assistant, University of Illinois at Urbana-Champagin.
Publications
1. Choi, Youn-Seo, Tenth order mock theta functions in Ramanujan's lost notebook.
Invent. Math. 136 (1999), no. 3, 497--569
2. Berndt, Bruce C.; Choi, Youn-Seo; Kang, Soon-Yi, The problems submitted by Ramanujan to the Journal of the Indian Mathematical Society. Continued fractions: from analytic number theory to constructive approximation (Columbia, MO, 1998), 15--56, Contemp. Math., 236, Amer. Math. Soc., Providence, RI, 1999
3. Choi, Youn-Seo, Tenth order mock theta functions in Ramanujan's lost notebook. II.
Adv. Math. 156 (2000), no. 2, 180--285
4. Choi, Youn-Seo, Tenth order mock theta functions in Ramanujan's lost notebook. IV.
Trans. Amer. Math. Soc. 354 (2002), no. 2, 705--733
5. Choi, Youn-Seo, Identities for Ramanujan's sixth-order mock theta functions. Q. J.
Math. 53 (2002), no. 2, 147--159
6. Choi, Youn-Seo, Generalization of two identities in Ramanujan's lost notebook. Acta Arith. 114 (2004), no. 4, 369--389
7. Youn-Seo Choi, Mock Theta functions in Ramanujan's Lost Notebook (Survey), RIMS 1512-analytic number theory, (2006) 44-53
8. Youn-Seo Choi, tenth order mock theta functions in Ramanujan's lost notebook, Proceedings of the London Mathematical Society, (1) 94 (2007) 26-52
9. B. C. Berndt, G. Choi, Youn-Seo Choi, H. Hahn, B. P. Yeap, A. J. Yee, H. Yesilyurt, and J. Yi, Ramanujan's forty identities for the Rogers-Ramanujan functions, Memoirs of the A.M.S., vol 188, #880, (2007)
10. Youn-Seo Choi, The Basic Bilateral Hypergeometric Series and the Mock Theta Functions, the Ramanujan Journal, accepted for publication.
11. Youn-Seo Choi and Byungchan Kim, Partititon Identities from Third and Sixth order Mock Theta Functions, submitted for publication.
Invited Talks
December 2009 Mini Workshop on number theory, Postech,
-combinatorial interpretation for third ans sixth order mock Theta functions-
August 2009 East Asia Number Theory conference, Tsinghua Univ.
-understanding the mock theta functions through the basic bilateral hypergeometric series-
March 2009 Illinois Number Theory Celebration, UIUC, -Ramanujan’s mock theta functions-
May 2009 International Conference: Mock theta functions and applications in combinatorics, algebraic geometry, and mathematical physics, Max Planck,
-the basic bilateral hypergeometric series and the mock theta functions- November 2008 Korea-Japan Number Theory conference, Sendai
-Eulerian series in q-series and modular forms-
May 2008 the Hawaii workshop on the arithmetic of modular forms at Honolulu, U. of Hawaii,
-Identities for tenth order mock theta functions-
March 2008 Partitions, q-series and modular froms workshop and conference, U. of Florida,
-Identities for the fifth order mock theta functions and their generalization- Jun 2007 Yonsei univ. invited lecture, Yonsei Univ.
-Ramanujan’s forty identities for the Rogers-Ramanujan functions and modular forms-
November 2006 KIAS 10th Anniversary Workshop, KIAS,
-The Beauty of Theta Function: rogers-Ramanujan Functions- March 2006 Postech invited lecture, Postech
-Is it possible to interpret the mock theta function with the theory of partitions?-
November 2005 Mini-Symposium, Postech,
-Ramanujan’s Forty Identities for the Rogers-Ramanujan Functions- October 2005 Analytic Number Theory, RIMS – Kyoto univ.
-Ramanujan’s forty identities for the Rogers-Ramanujan’s Functions-
December 2004 KIAS-POSTECH-SNU, International Number Theory
Workshop; Modular forms and related topics, KIAS
-Tenth order mock theta functions in Ramanujan’s lost notebook- October 2000 q-series with Applications to Combinatorics, Number
Theory and Physics, University of Illinois at U-C
-two mock theta function identities in Ramanujan's Lost Notebook- October 2000 International Conference on Number Theory and Discrete
Mathematics in Honour of S. Ramanujan, Panjab University -tenth order mock theta functions in Ramanujan's lost notebook- November 1999 Symbolic Computation Conference, U. of Florida at Gainesville.
-Two identities for tenth order mock theta functions in Ramanujan's lost notebook-
March 1999 941 AMS meeting, University of Illinois at U-C.
-Two tenth order mock theta function identities in Ramanujan’s lost notebook-
October 1998 937 AMS meeting, Penn. State University.
-Two identities for mock theta function in Ramanujan’s lost notebook-
Conferences Attended
O December 2009 Mini Workshop on number theory, Postech,
August 2009 East Asia Number Theory conference, Tsinghua Univ.
March 2009 Illinois Number Theory Celebration, UIUC,
May 2009 International Conference: Mock theta functions and applications in combinatorics, algebraic geometry, and mathematical physics, Max Planck,
November 2008 Korea-Japan Number Theory conference, Sendai
May 2008 the Hawaii workshop on the arithmetic of modular forms at Honolulu, U. of Hawaii,
March 2008 Partitions, q-series and modular froms workshop and conference, U. of Florida,
Jun 2007 Yonsei univ. invited lecture, Yonsei Univ.
November 2006 KIAS 10th Anniversary Workshop, KIAS, March 2006 Postech invited lecture, Postech
November 2005 Mini-Symposium, Postech,
October 2005 Analytic Number Theory, RIMS – Kyoto univ.
December 2004 KIAS-POSTECH-SNU, International Number Theory Workshop; Modular forms and related topics, KIAS
January 2004 AMS Joint meeting, Phoenix, AZ
October 2000 q-series with Applications to Combinatorics, Number Theory
and Physics, UIUC
October 2000 International Conference on Number Theory and Discrete
Mathematics in Honour of S. Ramanujan, Panjab University May 2000 Millennial Conference on Number Theory, UIUC
November 1999 Symbolic Computation Conference, U. of Florida at Gainesville March 1999 941 AMS meeting, UIUC.
October 1998 937 AMS meeting, Penn. State University.
May 1998 Continued Fractions: From Analytic Number Theory to Constructive Approximation, University of Missouri.
July 1997 Topics in Number Theory, Penn. State University.
April 1997 Illinois Number Theory Conference, UIUC
June 1995 Special Functions, q-Series and Related Topics, U. of Toronto.
May 1995 International Conference on Analytic Number Theory, UIUC.
April 1994 Illinois Number Theory Conference, UIUC.
Conference Organized
June 2009 KIAS-Postech international number theory workshop March 2009 Industrious Number Theory
August 2008 Summer school on Spectral Theory of Automorphic Forms November 2006 KIAS-Postech-Snu International Number Theory Workshop June 2006 KIAS Number Theory Conference
May 2004 Conference on q-series and Special Functions
Memberships
Since August 1992 American Mathematical Society
