Articles

• Foreword, The Waltz of Reason: The Entanglement of Mathematics and Philosophy by Karl Siegmund, Korean translation (2024)

• Foreword, Principles of Topology, Fred H. Croom, Korean translation published by Hanbit Academy (2022) [Link] [Book]

• Turing and the Halting Problem, an article at HORIZON, KIAS Webzine (2021). [Link] [Naver]

• A group seen from its boundary, Horizon (a KIAS magazine in Korean), April 2019.

• JoongAng Ilbo Op/Ed, Scientific Walks

1. June 22, 2023, "The Immersion Horizon" [Link]

2. July 13, 2023, "The dream of immersion" [Link]

3. August 3, 2023, "The origin of immersion" [Link] : on János Bolyai

4. August 24, 2023, "The sparkling moment of the knowledge" [Link]

5. September 14, 2023, "Life undecorated" [Link]

6. October 5, 2023, "Why do you do it?" [Link] : a quote from William P. Thurston

7. October 26, 2023, "Images in the mind" [Link] 

8. November 16, 2023, "The School" [Link] : on Ilya Piatetski-Shapiro

9. December 7, 2023, "Those which cannot be taken away" [Link] : on Olivier Messiaen and Jean Leray

10. December 28, 2023, "Why can I do that" [Link]

11. January 18, 2024, "The easiest difficulty" [Link] : on John H. Conway

12. February 8, 2024, "Staring, eyes closed" [Link] : on Louis Antoine

13. February 29, 2024, "Over the hills" [Link]

14. March 21, 2024, "The Liberty of Intuition" [Link] : on Jacqueline du Pré

15. April 11, 2024, "A might called freedom" [Link] : on Georg Cantor

16. May 2, 2024, ""

17. May 23, 2024, ""

18. June 13, 2024, ""

Book

1. Imagine Mathematics (수학은 상상), published by Korean Educational Broadcasting System Publication, September 30, 2021. [Link]

Video/Audio Lectures

• Various talks of mine at YouTube [Link]

• Enchanted in Mathematics, Masters Series, EBS2 TV (Korea Educational Broadcasting System), August 19 - September 2, 2020. [Link]

• Greenthumb Talk, Podcast by Korea Foundation for Advanced Studies, recorded on Sep 13, 2021 [Link]

• Seoul National University, Korea, February 9, 2017.

  • SNU College of Natural Sciences Public Lecture

• Korea Foundation for Advanced Studies

  • Dream Lecture, July 15, 2017

Public lectures

• Korea Foundation for the Advancement Science & Creativity, International Olympiad Team Ceremony, June 14, 2023

• "공간의 풍경 (The landscape of a space), KIAS Public Lecture, Korean Mathematical Society Spring Meeting, April 28, 2022. [Youtube]

• Future intelligence (forum), CHUNG MONG-KOO Foundation and Chosun Ilbo, February 17, 2022. [youtube] [youtube (sketch)] [news article]

• "인간, 수학, 컴퓨터", KFAS Webinar, Youtube Live, November 13, 2021.

• OpenKIAS public lecture - 불가능에 대하여 (갈루아, 괴델, 튜링, 힐버트), December 22, 2020. [Youtube]

• 이토록 황홀한 수학 (Fascinated by Mathematics), a series of 11 lectures on various subjects, EBS2 channel (Korean Educational Broadcasting System), August 19 - September 2, 2020. lecture 1 (youtube)  complete lectures

• Public lecture (organized by The Korean Academy of Science and Technology), Yeongnam High School, Daegu, Korea, April 3, 2019.

• Public lecture at Mathematics Culture Festival, Gwachun National Science Museum, Korea, April 27, 2019.

• Science Camp, College of Natural Sciences, Seoul National University, (1) August 3, 2016 (2) August 9, 2018

• Talk concert (for general public), Gwachun National Science Museum, Korea, Aug 19, 2017.

• Young Mathematicians' Camp, National Institute for Mathematical Sciences, Daejeon, February 22, 2017.

• College of Natural Sciences Public Lecture, Seoul National University, Korea, February 9, 2017. [youtube]

• Saturday Public Science Lectures, College of Natural Sciences, Seoul National University, March 26, 2016.

• Saturday Public Science Lecture, College of Natural Sciences, Seoul National University, Oct 24, 2015.

Dream Lecture Series by Korea Foundation for Advanced Studies

• 2023 Oct 18 (West Daejeon Highschool)

• Human, Mathematics, Computer (On the Halting problem of Turing), KFAS building, November 13, 2021 (online).

• 2018 May 12 (KFAS building), May 14 (Hanyoung Foreign Language High School)

• 2017 March 20, 2017 (Young-rak High School), July 15, 2017 (KFAS building).

• 2016 July 23, July 30 (KFAS building), Seoul High School, October 14.

• 2015 Kyungshin High School - May 8. Seocho High School - May 29. Seo-oon Middle School - Sep 4. Chil-won High School - Oct 16.

• 2014 Sep 13, 2014 (Banpo High School). Dec 20, 2014, KFAS.