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  • Mathematics

Faculty - Mathematics

  • Associate Professor
  • CHO, YUN HYUNG 홈페이지 바로가기

Research Interest

Symplectic Geometry 
Integrable system 
Lie group action

Journal Articles

  • (2023)  Unique toric structure on a Fano Bott manifold.  JOURNAL OF SYMPLECTIC GEOMETRY.  21,  3
  • (2022)  Small toric resolutions of toric varieties of string polytopes with small indices.  COMMUNICATIONS IN CONTEMPORARY MATHEMATICS.  25,  01
  • (2022)  Enumeration of Gelfand-Cetlin type reduced words.  ELECTRONIC JOURNAL OF COMBINATORICS.  29,  1
  • (2021)  On the combinatorics of string polytopes.  JOURNAL OF COMBINATORIAL THEORY SERIES A.  184,  1
  • (2021)  A critical point analysis of Landau-Ginzburg potentials with bulk in Gelfand-Cetlin systems.  KYOTO JOURNAL OF MATHEMATICS.  61,  2
  • (2021)  Remark on the Betti numbers for Hamiltonian circle actions.  COMPTES RENDUS MATHEMATIQUE.  359,  2
  • (2021)  Classification of six-dimensional monotone symplectic manifolds admitting semifree circle actions II.  INTERNATIONAL JOURNAL OF MATHEMATICS.  32,  2
  • (2021)  Classification of six-dimensional monotone symplectic manifolds admitting semifree circle actions III.  INTERNATIONAL JOURNAL OF MATHEMATICS.  32,  2
  • (2020)  Lagrangian fibers of Gelfand-Cetlin systems.  ADVANCES IN MATHEMATICS.  372,  10
  • (2020)  LAGRANGIAN FIBERS OF GELFAND-CETLIN SYSTEMS OF SO(n)-TYPE.  TRANSFORMATION GROUPS.  25,  4
  • (2019)  Monotone Lagrangians in flag varieties.  INTERNATIONAL MATHEMATICS RESEARCH NOTICES. 
  • (2019)  Classification of six-dimensional monotone symplectic manifolds admitting semifree circle actions I.  INTERNATIONAL JOURNAL OF MATHEMATICS.  30,  6
  • (2019)  On the Chern numbers for pseudo-free circle actions.  JOURNAL OF SYMPLECTIC GEOMETRY.  17,  1
  • (2018)  Hard Lefschetz property for Hamiltonian torus actions on 6-dimensional GKM manifolds.  JOURNAL OF SYMPLECTIC GEOMETRY.  16,  6
  • (2018)  On the f-vectors of Gelfand-Cetlin polytopes.  EUROPEAN JOURNAL OF COMBINATORICS.  67, 
  • (2017)  Embedded Surfaces for Symplectic Circle Actions.  CHINESE ANNALS OF MATHEMATICS SERIES B.  38,  6
  • (2016)  HARD LEFSCHETZ PROPERTY OF SYMPLECTIC STRUCTURES ON COMPACT KAHLER MANIFOLDS.  TRANSACTIONS OF THE AMERICAN MATHEMATICAL SOCIETY.  368,  11
  • (2016)  Unimodality of Betti numbers for Hamiltonian circle actions with index-increasing moment Maps.  INTERNATIONAL JOURNAL OF MATHEMATICS.  27,  5
  • (2016)  Hamiltonian circle action with self-indexing moment map.  MATHEMATICAL RESEARCH LETTERS.  23,  3
  • (2015)  Semifree Hamiltonian circle actions on 6-dimensional symplectic manifolds with non-isolated fixed point set.  JOURNAL OF SYMPLECTIC GEOMETRY.  13,  4

Conference Paper

  • (2020)  Classification of semifree monotone Hamiltonian S^1 manifolds.  The 5-th Korea Toric Topology Winter Workshop.  KOREA, REPUBLIC OF
  • (2019)  String polytopes and their small resolutions.  Pohang Mathematics Workshop 2019.  KOREA, REPUBLIC OF
  • (2019)  Betti numbers for Hamiltonian circle actions with isolated fixed points.  Toric Topology 2019 in Okayama.  JAPAN
  • (2019)  Small resolutions of string polytopes in low dimensions.  2019 KMS Annual Meeting.  KOREA, REPUBLIC OF
  • (2019)  Lie group actions on symplectic manifolds.  The 4th KIAS Alumni Workshop in Mathematics.  KOREA, REPUBLIC OF
  • (2018)  Symplectic Geometry of Fano varieties.  The 5th Sinchon Workshop on Algebraic Geometry.  KOREA, REPUBLIC OF
  • (2018)  Monotone Lagrangians in flag varieties.  Matrix Factorizations and Mirror Symmetry.  KOREA, REPUBLIC OF
  • (2018)  Monotone Lagrangian tori in cotangent bundles of spheres.  2018 Joint Meeting of the KMS and GMS.  KOREA, REPUBLIC OF
  • (2018)  Monotone Lagrangian tori in cotangent bundles of spheres.  Hayama Symposium on complex analysis in Several Variables XX 2018.  JAPAN
  • (2018)  On Gelfand-Cetlin polytopes.  The Japanese Conference on Combinatorics and its Applications.  JAPAN
  • (2017)  Monotone Lagrangians in flag varieties.  Pohang Mathematics Workshop.  KOREA, REPUBLIC OF
  • (2017)  Monotone Lagrangians in flag varieties.  East Asian Symplectic Conference 2017.  CHINA
  • (2017)  Lagrangian fibers of Gelfand-Cetlin systems.  BICMR & IBS-CGP JOINT SYMPLECTIC GEOMETRY WORKSHOP.  CHINA