Seonhee Lim

Department of Mathematical Sciences
Seoul National University

slim@snu.ac.kr

Papers   Teaching  Research

Research Interest : homogeneous dynamics and number theory, geometric group theory

  • Group actions on homogeneous spaces and applications to number theory

  • Lattices of Lie groups and automorphism groups of trees and polyhedral complexes

  • Dynamics of group actions on trees and buildings, more generally metric spaces of non-positive curvature

  • Entropy rigidity, thermodynamics formalism

    • Seminar organized : Dynamics & Number Theory

    Recent conference organized:

  • KMS fall meeting, special session in number theory and dynamics (Oct. 26-28, 2023)

  • KWMS Winter Workshop (Feb. 14, 2023)

  • PRIMA 2022 (Dec. 5-10, 2022)

  • Workshop on dynamical systems and L-functions (Feb 1-5, 2021)

  • Special session "Number theory and Dynamics" 2019 KMS Fall meeting (October 25-27, 2019)

  • Number theory and dynamics (July 15-19, 2019)

    Past conferences organized

    cv

    Upcoming talks

    1. Women in Dynamical Systems and Ergodic theory , Pisa, Italy (May 20-24, 2024)

    Recent talks

    1. IISER tifr International Colloquium: Randomness,Geometry and Dynamics, IISER-Pune, India (Jan, 2024)

    2. Hyperbolic geometry of numbers, KIAS, Seoul, Korea (Dec 18-20, 2023)

    3. David Rees Distinguished Visiting Fellowship Lectures, Exeter, England (Oct 30th - Nov. 4th, 2023)

    4. 2023 NCTS Workshop on Dynamical Systems, NTU, Taiwan, (Jun 08 - 10, 2023).

    5. “Groups and dynamics in geometry“, Conference in honor of Ursula Hamenstadt, Ascona, Switzerland, (May 29- June 2, 2023)

    6. "Arithmetic Statistics, Automorphic Forms and Ergodic Methods", Bonn, Germany, (April 24- 28, 2023)

    7. Ergodic theory and Dynamical Systems seminar, Postech, Korea, (Nov. 2, 2022)

    8. HDRTExeter, England (May 18, 2022)

    9. Heilbronn Number Theory Seminar, Univ. of Bristol, England (May 12, 2021)

    10. Two lectures on "Homogeneous dynamics and Number theory", QSMS workshop, Seoul, Korea (Jan 25-26, 2021)

    11. Workshop on Topics at the Interface of Low Dimensional Group Actions and Geometric Structures, IMS, Singapore (Jan 11-15, 2021)

    12. Lecture series on Homogeneous dynamics and Number theory, KIAS, Seoul, Korea.

      1. Lecture 1. Diophantine properties of continued fractions and dynamics on the hyperbolic plane (Oct. 30, 2020)

      2. Lecture 2. Oppenheim conjecture, Littlewood conjecture, and dynamics on homogeneous spaces (Nov. 6, 2020)

      3. Lecture 3-4. Diophantine approximations and homogeneous dynamics (sequel of Lecture 1) (Nov. 13, 20, 2020)

      4. Lecture 5. Exceptional examples of Oppenheim type conjectures and Diophantine properties (sequel of Lecture 2)(Nov. 27, 2020)

    13. Colloquium, Yonsei University, Seoul, Korea (Dec 3, 2020)

    14. Colloquium, UNIST, Ulsan, Korea (Nov 26, 2020)

    15. Colloquium, KAIST, Daejeon, Korea (Nov 12, 2020)

    16. Mini-course on "Number theory and Dynamics", ICERM workshop, Providence, USA (June 22-26, 2020)

    17. KMS Young Mathematics Camp, NIMS, Daejun, Korea. (January 7-10, 2020)

    18. Colloquium, Ewha Womans university, Seoul, Korea (November 29,2019)

    19. Smooth and Homogeneous Dynamics, ICSTS, Bangalore, India (October 3, 2019)

    20. "Riemann hypothesis and dynamics of billiards", Science Camp of SNU College of Natural Sciences (public lecture), Seoul National University, Seoul, Korea (August 1, 2019)

    21. A3 Foresight Program workshop "Modeling and Simulation of Hierarchical and Heterogeneous Flow Systems with Applications to Materials Science Ⅵ" Sendai, Japan (July 28, 2019)

    22. Women in Geometry and Topology, IBS-CGP, Pohang, Korea (June 26, 2019)

    23. Inhomogeneous Diophantine approximation, Dynamics and number theory, Sydney, Australia (June 12-14, 2019)

    24. Dynamics of group actions, a conference in honor of Yves Benoit, Cetraro, Italy (May 27-31, 2019)

    25. "Entropy and weight vectors", KSIAM, Yonsei University, Korea (May 17-18, 2019)

    26. "Spectrum of non-flat triangular drum and the orbit of a billiard on it: around the work of Akshey Venkatesh", Colloquium, Korea University, Seoul, Korea (May 10, 2019)

    27. Two talks on "Brownian motion in negative curvature", Ergodic geometry, TIFR, Mumbai, India (March 25-29, 2019)

    28. "Brain networks : volume entropy and the weigths on vertices", Colloquium, Inha University, Incheon, Korea (March 14, 2019)

    29. "Hausdorff dimension of badly approximable vectors in inhomogeneous Diophantine approximation", Workshop on Ergodic theory and related fields , POSTECH, Pohang, Korea (February 21-22, 2019)

    30. Mathematical modeling in medial sciences: theory, computation, and challenges, ICONS, Yonsei University, Seoul, Korea (December 8, 2018)

    31. One-day Workshop on Dynamics, Geometry and Groups, Sungkyunkwan University, Suwon, Korea (December 5, 2018)

    32. Samsung Annual Forum, Seoul, Korea (October 26, 2018)

    33. KIAS Workshop, Yangyang, Korea (October 24, 2018)

    34. Arbeitsgemeinschaft on Rigidity of stationary measures, MFO, Oberwolfach, Germany (October 8, 2018)

    35. 2018 Joint Meeeting of the Korean Mathematical Society and the German Mathematical Society, Special session on Aperiodic Order and Dynamics, COEX, Seoul, Korea (October 5, 2018)

    36. Gauss Colloquium, IMDARC, Seoul, Korea (September 28, 2018)

    37. Public lecture on 2018 Fields medalists (A. Venkatesh) ,organized by Dong-a Math Magazine, CHAOS Foundation and KIAS, Seoul Blue Square, Seoul, Korea (September 7, 2018)

    38. Conference on Geometric and Asymptotic Group Theory with Applications, KIAS, Seoul, Korea (July 15-20, 2018)

    39. Workshop on Thermodynamic formalism in dynamical systems, ICMS, Edinburgh, UK (June 18-22, 2018)

    40. Data Science Forum, Ajou University, Suwon, Korea (May 25, 2018).

    41. Lecture series on homogeneous dynamics, 2018 Houston Summer School on Dynamical Systems, Houston, USA (May 16-21, 2018)

    42. Special talk, Seoul Women's University, Korea (April 3, 2018)

    43. Colloquium, Sungkyunkwan University, Korea (March 22, 2018)

    44. Colloquium, Tata Institute, India (February 22, 2018)

    45. CNS Public lecture, 자연대 공개강연, Seoul National University, Korea (February 10, 2018)

    46. Workshop on "Diophantine Approximation and Dynamical Systems", La Trobe Univ., Melbourne, Australia (January 6-8, 2018)

    47. Number theory seminar, Shanghai center for mathematics, Shanghai, China (December 22, 2017)

    48. Special session in dynamics, 2nd PPICTA, Busan, Korea (November 13, 2017)

    49. CMC 정오의 수학산책, KAIST, Korea (October 13, 2017)

    50. KIAS research station, Incheon, Korea (June 20, 2017)

    51. Workshop on Number Theory and Homogeneous dynamics, Jeju, Korea (June 17, 2017)

    52. Workshop on homogeneous dynamics and its applications to number theory, Seoul, Korea (May 18, 2017)

    53. Geometric Topology Fair, KAIST, Daejeon, Korea (May 11-12, 2017)

    54. Workshop on Ergodic Theory & Dynamical Systems, NUS, Singapore (February 14-16, 2017)

    55. Geometry and topology seminar, Jacobs Univ., Bremen, Germany (February 2, 2017)

    56. SNU Topology winter school (2 lectures on homogeneous dynamics and number theory), Wonju, Korea (December 14-15, 2016)

    57. Probability seminar, KAIST, Daejeon, Korea (December 2, 2016)

    58. IBS-CGP Mathematics Festival (Lecture series on Random walks and spectral gaps on graphs), POSTECH, Pohang, Korea (July 18-22, 2016)

    59. Geometric Topology Fair, KAIST, Daejeon, Korea (July 5-8, 2016)

    60. KWMS international conference, KIAS, Seoul, Korea (July 1, 2016)

    61. Dynamics seminar, Jacobs Univ., Bremen, Germany (June 9, 2016)

    62. Geometry seminar, Univ. Karlsruhe, Karlsruhe, Germany (June 8, 2016)

    63. Geometry and topology seminar, Univ. Karlsruhe, Karlsruhe, Germany (June 7, 2016)

    64. Ergodic Geometry, a conference in honor of F. Ledrappier, Paris, France (June 2, 2016)

    65. Colloquium, Seoul National University, Seoul, Korea (December 4, 2015)

    66. Colloquium, Ajou University, Suwon, Korea (December 3, 2015)

    67. International Conference on Boundaries and Ergodic Geometry, Univ. of Notre Dame, Notre Dame, US (June 3, 2015)

    68. Geometry, Topology and Dynamics seminar, UIC, Chicago, US (April 23, 2015)

    69. Open-ended seminar, Special program in homogeneous dynamics, MSRI, Berkeley, USA (April 21 , 2015)

    70. Introductory Workshop: Geometric and Arithmetic Aspects of Homogeneous Dynamics, MSRI, Berkeley, US (February 6, 2015)

    71. Geometry and Topology seminar, UC Davis, Davis, USA (November 18, 2014)

    72. Dynamical Systems Seminar, UT Austin, Austin, USA (November 12, 2014)

    73. Group actions and Dynamics seminar, Yale University, New Haven, USA (October 27, 2014)

    74. Ahlfors-Bers Colloquium, Yale University, New Haven, USA (October 24, 2014)

    75. Felix Klein seminar, Univ. of Notre Dame, USA (Oct. 16, 2014)

    76. Dynamics seminar, Univ. of  Chicago, Chicago, USA (Oct. 13, 2014)

    77. Differential geometry seminar, UC Berkeley, Berkeley, USA (Sept. 22, 2014)

    78. Special session on dynamical systems and ordinary differential equations, ICM, Seoul, Korea (August 18, 2014)

    79. Geometry on groups and spaces, ICM Satellite conference, Daejeon, Korea (July 11, 2014)

    80. KIAS Abel Lecture(Open KIAS Public Lecture), KIAS, Korea (June 20, 2014)

    81. Groups and Geometry in the South East, University of Warwick, UK (February 21, 2014)

      more

    Links

    ·         List of conferences in geometric group theory

    ·         List of conferences in dynamical systems