Activities
Conference and workshop presentations
[2024]
TBA, Workshop on Toric Topology, Fields Institute, Ontario, Canada, August 19–23, 2024.
Gorenstein toric Schubert varieties in Grassmannians, KWMS Summer School1: Complex geometry and related topics, KIAS, Seoul, Korea, July 2–5, 2024.
Orientations on Dynkin diagrams and topology on flag varieties, The 31st KIAS Combinatorics Workshop, Utop Ubless Hotel, Jeju, Korea, May 30–June 1, 2024.
Topological and geometric properties of torus orbit closures in flag varieties, 2024 KMS Spring Meeting, Daejeon Convention Center & KAIST, Daejeon, Korea, April 18–20, 2024.
Toric Schubert varieties in flag varieties, Topology and Geometry of Torus actions and related Combinatorics(TGTC) Workshop 2024 in Himeji, Egret Himeji, Himeji, Hyogo, Japan, March 28–31, 2024.
Toric Schubert varieties in Grassmannians, Workshop on Fano spherical varieties - 2024 Spring, Gyeongsang National University, Jinju, Korea, February 14–17, 2024.
[2023]
Bases of the equivariant cohomologies of regular semisimple Hessenberg varieties, KMS Special Conference with 2022 Fields Medalists, Seoul National University, Seoul, Korea, October 26–28, 2023.
Toric Schubert varieties and orientations on Dynkin diagrams, YeungNam Workshop on Algebraic Geometry XI, IBS-CGP, Pohang, Korea, October 13–14, 2023.
Lecture series on basic topology, Algebraic and Analytic Structure on Manifolds and its Application, Jeju, Korea, August 28–30, 2023.
Exploring the combinatorics of string polytopes, TGTC Summer Seminar 2023 in Osaka, Osaka Metropolitan University, Osaka, Japan, August 7–10, 2023.
On regular semisimple Hessenberg varieties, 2023 the 18th KWMS International Conference, KIAS, Seoul, Korea, June 26–27, 2023.
[2022]
On toric varieties in the flag variety, SAGE days 116, Yangyang, Korea, December 27–30, 2022
On string polytopes, Toric degenerations and mirror symmetry, Kumamoto University, Kumamoto, Japan, October 13–14, 2022.
Geometry of flag varieties and string polytopes, IBS Center for Geometry and Physics 10th Anniversary Conference, Pohang, Korea, October 4–6, 2022.
Torus actions on regular semisimple Hessenberg varieties, Algebraic geometry and related topics, Lotte Resort Buyeo, Buyeo, Korea, September 27–28, 2022.
Lagrangian fillings for Legendrian links of finite or affine type, and the foldings, Trends in cluster algebras 2022 (online), Nagoya University, Nagoya, Japan, September 20–22, 2022.
Foldings in studying flag manifolds, Pacific Rim Complex and Symplectic Geometry Conference, Kyoto University, Kyoto, Japan, August 1–5, 2022.
Classification of toric Schubert varieties, The 6th Korea Toric Topology Workshop, KAIST, Daejeon, Korea, July 11–13, 2022.
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[2021]
Cubic Bruhat interval polytopes, 2021 KMS Annual Meeting (online), October 20–22, 2021.
Seeds many Lagrangian fillings for Legendrian links: Lecture 2, Cluster algebras and related topics, Seoul National University, Seoul, Korea, July 12–15, 2021.
On string polytopes II, Toric Topology 2021 in Osaka (online), Osaka City University, Osaka, Japan, March 24–26, 2021.
[2020]
On the torus orbit closures in flag varieties, Topology and geometry of group actions (online), HSE University, Moscow, Russia, November 18–22, 2020.
On Gelfand–Cetlin type reduced words, 2020 KMS Annual Meeting, October 23–24, 2020.
Introduction to GKM theory / Canonical classes in the GKM graph cohomology, Combinatorics on flag varieties and related topics, KIAS, Seoul, Korea, January 15–17, 2020.
[2019]
Combinatorial properties of string polytopes of type A, Toric Topology 2019 in Okayama: Workshop for Young Researchers, Okayama University of Science, Okayama, Japan, November 18–22, 2019.
Torus orbit closures in the flag variety, Hessenberg varieties 2019 in Osaka, Osaka City University, Osaka, Japan, November 6–8, 2019.
Gelfand–Cetlin polytopes and string polytopes, 2019 KMS Annual Meeting, Hongik University, Seoul, Korea, October 25–27, 2019.
Smooth toric Bruhat interval polytopes, 2019 KWMS International Conference, Seoul National University, Seoul, Korea, August 22--23, 2019.
Gelfand–Cetlin type string polytopes, Mini workshop on toric topology and related topics, Korea Chamber of Commerce and Industry, Seoul, Korea, May 27, 2019.
Grossberg–Karshon twisted cubes and connected walks, The 5th Korea Toric Topology Winter Workshop, The K-Hotel, Gyeongju, Korea, January 21–23, 2019.
[2018]
The Gromov width of generalized Bott manifolds, 2018 KMS Spring Meeting, Kyung Hee University, Seoul, Korea, April 20–22, 2018.
[2017]
Flag Bott–Samelson varieties and generalized string polytopes, Toric Topology 2017 in Osaka, Osaka City University, Osaka, Japan, December 11–15, 2017.
Newton–Okounkov Bodies of Flag Bott–Samelson Varieties, 2017 KMS Annual Meeting, Dankook University, Cheonan, Republic of Korea, October 27–29, 2017.
Complex Structures on Flagged Bott–Samelson Manifolds, The 13th KWMS International Conference, POSTECH, Pohang, Republic of Korea, June 22–23, 2017.
Bott Towers, Generalized Bott Towers, and Flagged Bott Towers, Princeton-Rider Workshop: on the Homotopy Theory of Polyhedral Products, Princeton University, New Jersey, USA, May 29–June2, 2017.
A flagged Bott tower and the torus orbit closure, 2017 KMS Spring Meeting, Chosun University, Gwangju, Republic of Korea, April 28–30, 2017.
[2016]
Towers in Toric Topology, The 4th Korea Toric Topology Winter Workshop, The Unipark of Jeju National University, Jeju Island, Republic of Korea, December 26–29, 2016.
A generalized Bott tower and its associated flagified Bott tower, 2016 Annual Meeting of KMS, Seoul National University, Seoul, Republic of Korea, October 20–23, 2016.
Flagified Bott–Samelson varieties and Bott towers, and GKM descriptions, Mini-workshop on Toric Topology in Okayama, Okayama University of Science, Okayama, Japan, May 21, 2016.
A combinatorial description for untwistedness of a Grossberg–Karshon twisted cube, Topology and Combinatorics seminar, Ajou University, Suwon, Republic of Korea, February 3, 2016.
[2015]
Constructions of flagified Bott–Samelson varieties and Bott towers, and their topology, The 3rd Korea Toric Topology Winter Workshop, Gyeongju, Republic of Korea, December 28–30, 2015.
Flagified Bott–Samelson varieties and Bott towers, 2015 Annual Meeting of KMS, Yonsei University, Seoul, Republic of Korea, October 23–25, 2015.
Bott towers and Grossberg–Karshon twisted cubes, The 11th KWMS International Conference, KAIST, Daejeon, Republic of Korea, July 2–3, 2015.
[2014]
Schubert calculus and Newton–Okounkov bodies, Toric Workshop for Students 2014, KAIST, Daejeon, Republic of Korea, December 22–25, 2014.
Untwistedness of a Grossberg–Karshon twisted cube, 2014 Annual Meeting of KMS, Yonsei University, Seoul, Republic of Korea, October 24–25, 2014.
Grossberg–Karshon twisted cubes and hesitant walk avoidance, Topology of Torus Actions and Applications to Geometry and Combinatorics, Daejeon Convention Center, Daejeon, Republic of Korea, August 7–11, 2014.
Equivalent conditions for untwistedness of a Grossberg–Karshon twisted cube, Mini-Workshop on toric topology, Ajou University, Suwon, Republic of Korea, August 4, 2014.
Invited visits and talks
[2024]
Seminar talk, PNU Geometry and Topology seminar, Pusan National University, Busan, Korea, May 20, 2024.
[2023]
Seminar talk, Algebraic Geometry Seminar, IBS-CGP, Pohang, Korea, July 11, 2023.
Seminar talk, International Polyhedral Products Seminar, Princeton University, NJ, USA, May 18, 2023.
[2022]
Toric Degenerations, BIRS, Alberta, Canada, December 4–9, 2022.
Colloquium talk at Department of Mathematics at Soongsil University, Seoul, Korea, November 29, 2022.
Colloquium talk at Department of Mathematics at Ajou University, Suwon, Korea, November 25, 2022.
Seminar talk, PNU Geometry and Topology seminar, Pusan National University, Busan, Korea, November 14, 2022.
Colloquium talk at Department of Mathematics at Korea University, Seoul, Korea, November 11, 2022.
Interactions between Hessenberg Varieties, Chromatic Functions, and LLT Polynomials, BIRS, Alberta, Canada, October 16–21, 2022.
Seminar talk, Algebraic Geometry Seminar, IBS-CGP, Pohang, Korea, July 5, 2022.
Colloquium talk at Department of Mathematics at Chungbuk National University, Cheongju, Korea, June 9, 2022.
Seminar talk, ZAG, January 18, 2022.
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[2021]
Seminar talk, Seminar on Cluster structures on coordinate rings, AiM Research Community on Link Homology, CA, USA, November 4, 2021.
Seminar talk, Topology Seminar, KIAS, Seoul, Korea, June 22, 2021.
Seminar talk (a part of Toric topology reading seminar), KIAS, Seoul, Korea, June 9, June 23, July 7, 2021.
Seminar talk, Combinatorics Seminar, Washington University in St. Louis, MO, USA, March 16, 2021.
Seminar talk, UC Davis, CA, USA, February 2, 2021.
[2020]
Seminar talk, Complex Geometry Seminar, IBS Center for Complex Geometry, Daejeon, Korea, November 10, 2020.
Seminar talk, T-seminar, October 30, 2020.
Seminar talk, KIAS seminar, KIAS, Seoul, Korea, September 11, 2020.
[2019-]
Seminar talk, CMC Seminar, KIAS, Seoul, Korea, October 18, 2019.
Seminar talk, Topology seminar talk, KAIST, Daejeon, Korea, October 10, 2019.
Seminar talk, Sungkyunkwan University, Suwon, Korea, May 30, 2019.
Seminar talk, Combinatorics seminar, Ajou University, Suwon, Korea, May 1, 2019.
Seminar talk, KIAS, Seoul, Korea, February 13, 2019.
Seminar talk, KAIST, Daejeon, Korea, January 4, 2019.
Seminar talk, KAIST, Daejeon, Korea, July 23, 2018.