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- (upcoming) June. 22. 2023:
Workshop on Operator Theory, Function Theory, and Applications, Seoul National University
Daugavet property of Banach algebras of holomorphic functions
- May. 30. 2023:
Mathematical Analysis Seminar at University of Valencia
A version of Holub’s result for numerical radius
- May. 11. 2023:
Invited seminar at Universidad Complutense de Madrid
Analytic structure and some geometric property of 
- Apr. 28. 2023:
2023 Korean Mathematical Society Spring Meeting
Rank-one perturbation of linear operators
- Apr. 24. 2023:
Analysis, PDE & Probability Seminar at Korea Institute for Advanced Study
On the Daugavet property and holomorphic functions on a Banach space
- Feb. 20. 2023:
Invited seminar at Chungbuk National University, South Korea
Functions which attain their numerical radii
- Jan. 30 – Feb. 1. 2023:
Invited lectures for graduate students in the 18th ILJU School of Mathematics with Spanish Functional Analysis Network
Basic concepts in Banach spaces and the approximation property
- Jan. 30. 2023:
The 18th ILJU School of Mathematics with Spanish Functional Analysis Network
On the strong subdifferentiability of the homogeneous polynomials and (symmetric) tensor products
- Dec. 2. 2022:
Mathematical Analysis Seminar at University of Valencia
The Lipschitz approximation property
- Oct. 27. 2022:
Functional Analysis Seminar, Pohang University of Science and Technology, South Korea
Numerical radius attaining mappings
- Oct. 10. 2022: 2022 Global KMS International Conference, The Korea Science Technology Center, South Korea
On norm-attainment in symmetric tensor products of Banach spaces
- Aug. 31. 2022: Basic Research Laboratory Seminar, Hanyang University, South Korea
Approximation properties in terms of nonlinear functions
- Aug. 1. 2022: The 17th ILJU School of Mathematics, Banach spaces and related topics, South Korea
On the weak maximizing property
- June. 3. 2022: Seminario IMAC (Instituto Universitario de Matemáticas y Aplicaciones) de Análisis, Universitat Jaume I, Spain
Quasi-ACK structure on Banach spaces
- May. 19-21. 2022: Korea Operator Algebra Seminar (KOAS), South Korea
On the (weak) Corona theorem for Banach algebras of bounded holomorphic functions
- May. 17. 2022: BK21 FOUR Rookies Pitch, Seoul National University, South Korea
On norm attaining functions
- May. 12. 2022:
Functional Analysis Seminar, Pohang University of Science and Technology, South Korea
On absolutely strongly exposing operators
- April. 29. 2022: Basic Science Research Institute, Pohang University of Science and Technology, South Korea (Online talk)
On the residuality of norm attaining functions between Banach spaces
- April. 28. 2022: Spring Meeting of the Korean Mathematical Society (Online talk)
The weak corona theorem for holomorphic functions on polydisk type domains
- Feb. 2. 2022: Seminar at Institute for Industrial and Applied Mathematics, Chungbuk National University, South Korea
On the Lipschitz version of approximation properties
- Dec. 15. 2021: Mathematical Analysis Seminar, University of Valencia, Spain
Residuality of the set of norm attaining operators
- Dec. 9. 2021: Seminario IMAC (Instituto Universitario de Matemáticas y Aplicaciones) de Análisis, Universitat Jaume I, Spain
Some remarks on the Lipschitz numerical index of Banach spaces
- Oct. 21. 2021: Annual Meeting of the KMS (Online talk)
Boundaries for Gelfand transform images of Banach algebras of holomorphic functions
- July. 21. 2021:
The 16th ILJU School of Mathematics, Banach spaces and related topics, South Korea
On the geometric structure of some Banach algebras of holomorphic functions
- June. 22. 2021:
Workshop of the Functional Analysis and Applications Network, Spain (Online talk)
An improvement of a theorem of Holub and Mujica
- May. 13. 2021:
Banach Space Seminar, Korea Institute for Advanced Study, South Korea
On non norm-attaining functions on a Banach space
- May. 6. 2021:
Functional Analysis Seminar of the Institute of Mathematics and Statistics, University of Tartu, Estonia (Online)
When do all bounded linear operators attain their norm?
- April. 29.2021:
Seminar at the Department of Mathematics Education, Dongguk University, South Korea (Online)
Some remarks on the weak maximizing property
- April. 29. 2021: Spring Meeting of the KMS (Online talk)
On the existence of non norm-attaining operators
- Oct. 27. 2020: Functional Analysis Seminar of the Department of Mathematics of the Faculty of Exact and Natural Sciences of the University of Buenos Aires (Online talk)
On holomorphic functions on polydisk type domains
- Oct. 23. 2020: Annual Meeting of the KMS (Online talk)
Norm-attainment in the projective tensor product of Banach spaces
- July 3. 2020: Spring Meeting of the KMS (Online talk)
Separation Theorems for Group Invariant Polynomials
- Feb. 13. 2020: Mathematical Analysis Seminar at University, Valencia, Spain
Embedding of the open unit ball of
into fibers of
- Jan. 31. 2020: V Congreso de Jóvenes Investigadores de la RSME, Jaume I University, Spain
Analytic structure in fibers of the space of bounded analytic functions on the unit ball of
- Jan. 24. 2020: XVII Encuentros Análisis Funcional Murcia-Valencia, University of Valencia, Spain
Bollobás theorem on Hilbert spaces
- Oct. 26. 2019: Annual Meeting of the KMS, Hongik University, South Korea
Analytic structure in fibers of 
- Apr. 20. 2019: Spring Meeting of the KMS, Kangwon National University, South Korea
The Bishop-Phelps-Bollobás property and absolute sums
- Feb. 6. 2019: Mathematical Analysis Seminar, University of Valencia, Spain
The Bishop-Phelps-Bollobás property and absolute sums
- Aug. 31. 2018:
Seminar at the Department of Mathematics Education, Dongguk University, South Korea
The Bishop-Phelps-Bollobás property in complex Hilbert spaces