Talks

60. Log canonical thresholds on Burniat surfaces, Young Perspectives on Algebraic Geometry in Jinju, New Raon Stay Hotel, Jinju, Republic of Korea, Jan. 31, 2024.

59. Singular fibers of some fibrations on Keum-Naie surfaces, Gongju National University of Education, Gongju, Republic of Korea, May 3, 2023.

58. Keum-Naie surfaces via bidouble covers, Gyeongsang National University, Jinju, Republic of Korea, Apr. 4, 2023.

57. Classification of complex smooth projective surfaces, Gyeongsang National University, Jinju, Republic of Korea, Apr. 3, 2023.

56. Singular fibers of some fibrations on Keum-Naie surfaces, 2023 CNU International Conference for Mathematics and its Applications, Online, Chungnam National University, Daejeon, Republic of Korea, Jan. 17, 2023.

55. Minimal surfaces of general type with p_g=0 via bidouble covers, Korea University, Seoul, Republic of Korea, Nov. 22, 2022.

54. Keum-Naie surfaces with K^2=4 via bidouble covers, ASADCS seminar in BRL, Online, Chungnam National University, Daejeon, Republic of Korea, Oct. 8, 2021.

53. Keum-Naie surfaces with K^2=4 via bidouble covers, Buyeo Algebraic Geometry Workshop 2021 Autumn, Lotte Resort Buyeo, Buyeo, Republic of Korea, Oct. 1, 2021.

52. Complex minimal surfaces of general type with p_g=0 and K^2=7 via bidouble covers, AGEA seminar, Online, May 14, 2021.

51. Minimal complex surfaces of general type with p_g=0 and K^2=7 via bidouble covers, KIAS, Seoul, Republic of Korea, Apr. 26, 2021.

50. Minimal surfaces of general type with p_g=0 and K^2=7 via bidouble covers, Advances in Algebraic Geometry, Online, Yonsei University, Seoul, Republic of Korea, Feb. 24, 2021.

49. A construction of complex minimal surfaces of general type with p_g=0 and K^2=7, 2020 Conference of the Chungcheong Mathematical Society, Online, Republic of Korea, Sep. 12, 2020.

48. A two-dimensional family of surfaces of general type with p_g=0 and K^2=7, 2020 KMS Spring Meeting, Online, Republic of Korea, July 3, 2020.

47. Fibrations of hyperelliptic curves of genus 3 on minimal surfaces of general type with p_g=0, Sungkyunkwan University, Suwon, Republic of Korea, Dec. 18, 2019.

46. Fibrations of hyperelliptic curves of genus 3 on minimal surfaces of general type with p_g=0, Mini-Workshop on Algebraic Surfaces, KIAS, Seoul, Republic of Korea, Dec. 6, 2019.

45. The bicanonical involutions on minimal surfaces of general type with p_g=0 and K^2=7, St. John's Hotel in Gangneung, Republic of Korea, Nov. 7, 2019. 

44. Log canonical thresholds on Burniat surfaces via the canonical divisors, Beihang University in Beijing, China, Oct. 31, 2019.

43. Fibrations of hyperelliptic curves of genus 3 on minimal surfaces of general type with p_g=0, 2019 KMS Annual Meeting, Hongik University in Seoul, Republic of Korea, Oct. 26, 2019.

42. A characterization of Inoue surfaces with p_g=0 and K^2=7, KIAS in Seoul, Republic of Korea, Oct. 16, 2019.

41. A characterization of Inoue surfaces with p_g=0 and K^2=7, KAIST in Daejeon, Republic of Korea, Aug. 21, 2019.

40. A characterization of Inoue surfaces with p_g=0 and K^2=7, COMSATS University Islamabad in Islamabad, Pakistan, July 5, 2019.

39. 3-folds of general type and canonically of fiber type with high genus, Center for Geometry and Physics, Institute of Basic Science at Postech in Pohang, Republic of Korea, May 14, 2019.

38. 3-folds of general type and canonically of fiber type with high genus, 2019 KMS Spring Meeting, Kangwon National University in Chuncheon, Republic of Korea, Apr. 20, 2019.

37. Global log canonical thresholds of Burniat surfaces with K^2=6 via pluricanonical divisors, 2018 KMS Spring Meeting, Kyunghee University in Seoul, Republic of Korea, Apr. 21, 2018.

36. Bloch's conjecture and Chow motives, Kyungpook National University in Daegu, Republic of Korea, Apr. 4, 2018.

35. Characterizations of minimal surfaces of general type with p_g=0, Frontiers of Algebraic Surfaces, Center for Geometry and Physics, Institute of Basic Science at Postech in Pohang, Republic of Korea, Feb. 27, 2018.

34. Global log canonical thresholds of Burniat surfaces, Beihang University in Beijing, China, Dec. 12, 2017.

33. A characterization of Inoue surfaces with p_g=0 and K^2=7, 2017 KMS Annual Meeting at Dankook University in Cheonan, Republic of Korea, Oct. 28, 2017.

32. A characterization of Inoue surfaces with p_g=0 and K^2=7, KIAS in Seoul, Republic of Korea, Oct. 20, 2017.

31. A classification of surfaces, and a characterization of Inoue surfaces, Kookmin University in Seoul, Republic of Korea, July 31, 2017.

30. Minimal surfaces of general type with p_g=0 and the bicanonical maps of the highest degrees, Center for Geometry and Physics, Institute of Basic Science at Postech in Pohang, Republic of Korea, July 24, 2017.

29. Minimal surfaces of general type with p_g=0, K^2=7 and nonbirational bicanonical map, Shinchon Workshop on Algebraic Geometry (SWAG2) at Yensei University in Seoul, Republic of Korea, Feb. 28, 2017.

28. Burniat and Inoue surfaces with bidouble covers, Seoul Seminar on Algebraic Geometry 2 (SSAG-2), Hankuk University of Foreign Studies in Seoul, Republic of Korea, Dec. 10, 2016.

27. Gosset polytopes in Picard groups of smooth rational surfaces, Beihang University in Beijing, China, Nov. 24, 2016.

26. Double covers: Involutions on surfaces of general type with p_g=0 (Oct. 4, 2016), Bidouble covers: Characterizations of Burniat surfaces (Oct. 5, 2016), Center for Geometry and Physics, Institute of Basic Science at Postech in Pohang, Republic of Korea.

25. Characterizations of Burniat surfaces, and special divisor classes on smooth rational surfaces, Shanghai Center for Mathematical Sciences at Fudan University in Shanghai, China, June 27, 2016.

24. Characterizations of Burniat surfaces, Kyungpook National University in Daegu, Republic of Korea, May 19, 2016.

23. Special divisor classes on smooth rational surfaces, Shanghai Center for Mathematical Sciences at Fudan University in Shanghai, China, November 16, 2015.

22. Double covers: Involutions on surfaces of general type with p_g=0, and Bidouble covers: Characterizations of Burniat surfaces, a seminar at Fudan University in Shanghai, China, September 18, 2015.

21. Gosset polytopes on blown-up Hirzebruch surfaces, Fudan-KAIST workshop at KAIST in Daejeon, Republic of Korea, May 21, 2015.

20. Lecture I. Gosset polytopes on blown-up Hirzebruch surfaces, Lecture II. Special divisors of blown-up Hirzebruch surfaces via monoidal transformations, Ewha Womans University in Seoul, Republic of Korea, April 28, 2015.

19. Characterizations of Burniat surfaces, KAIST in Daejeon, Republic of Korea, February 23, 2015.

18. Lecture I. Double covers: Involutions on surfaces of general type with p_g=0, Lecture II. Bidouble covers: Characterizations of Burniat surfaces, Ewha Womans University in Seoul, Republic of Korea, February 12, 2015.

17. Characterizations of Burniat surfaces, and Special divisors on rational surfaces, Shanghai Center for Mathematical Sciences at Fudan University in Shanghai, China, December 17, 2014.

16. A characterization of Burniat surfaces with K^2=4 and of non nodal type, the Joint symposium 2014 Ewha Womans University, Japan Women's University and Ochanomizu University at Ewha Womans University in Seoul, Republic of Korea, December 3, 2014.

15. Special divisor classes on blow-ups of Hirzebruch surfaces, Seoul ICM 2014 at Coex in Seoul, Republic of Korea, August 19, 2014.

14. Birational types of quotient surfaces by involutions, Mini-workshop on Algebraic Geometry at Sichuan University in Chengdu, China, April 19, 2014.

13. Involutions on surfaces of general type with p_g=0: Bloch's conjecture for a bidouble cover, The Asian Mathematical Conference (AMC 2013) at BEXCO in Busan, Republic of Korea, July 2, 2013.

12. Involutions on surfaces of general type with p_g=0, A.G. Friday at POSTEC in Pohang, Republic of Korea, April 12, 2013.

11. Involutions on a surface of general type with p_g=0, ASARC seminar at KAIST in Daejeon, Republic of Korea, March 15, 2013.

10. Involutions on surfaces of general type with p_g=0, Symposium in Algebraic Geometry, Rivera Hotel at Haeundae in Busan, Republic of Korea, December 20, 2012.

9. Involutions on surfaces of general type with p_g=0 I. composed case, Geometric Journal Meeting at KIAS in Seoul, Republic of Korea, October 17, 2012.

8. Involutions on surfaces of general type with p_g=q=0, WCU workshop on classification and construction of algebraic varieties, the Seacloud Hotel at Haeundae in Busan, Republic of Korea, May 27, 2012.

7. Quotients of surfaces of general type with p_g=q=0 by an involution when the biconical map is composed with the involution, Spring Meeting of the Korean Mathematical Society, Sookmyung Women's University in Seoul, Republic of Korea, April 28, 2012.

6. Classification of involutions on a minimal surface of general type with p_g=q=0, Algebraic Geometry Miniworkshop at Ewha Womans University, Ewha Womans University in Seoul, Republic of Korea, July 21, 2011.

5. Involutions on a minimal surface of general type with p_g=q=0, Mini-workshop on Algebraic Geometry, Sogang University in Seoul, Republic of Korea, April 2, 2011.

4. Classification of involutions on a surface of general type  with p_g=q=0, Calf seminar, University of Warwick in Coventry, UK, July 1, 2010.

3. Involutions on a surface of general type with p_g = q = 0, K^2 = 7, GAel, Universidade de Coimbra in Coimbra, Portugal, June 7, 2010.

2. Involutions on a surface of general type with p_g = q = 0, K^2 = 7, 2010 KMS Spring Meeting, First Joint Meeting of the Korean Association of Mathematical societies, Chungnam National University in Daejeon, Republic of Korea, April 24, 2010.

1. A quotient of a minimal surface of general type with p_g=q=0 having an involution, 2009 KMS Fall Meeting, First Joint Meeting of KMS and AMS, Ewha womans University in Seoul, Republic of Korea, December 18, 2009.

Informal talks

6. F. J. Gallego, M. Gonzalez, B. P. Purnaprajna, Deformation of canonical morphisms and the moduli of surfaces of general type, Paper reading seminar, KAIST in Daejeon, Republic of Korea, April 2 and 9, 2013.

5. S. Bloch, Zero-cycles on surfaces, Paper reading seminar, KAIST in Daejeon, Republic of Korea, Nov. 20 and 27, 2012.

4. Involutions on surfaces of general type with p_g=0 I. composed case, Postgraduate seminar, University of Warwick in Coventry, UK, July 17, 2012.

3. Postgraduate seminar, Sogang University in Seoul, Republic of Korea, Feb. 3, 2010.

2. M. Reid, Chapters on Algebraic Surface (Park City note), Postgraduate reading seminar, Sogang University in Seoul, Republic of Korea, July 28, 2009.

1. Nonbirationality on a quotient of a minimal surface of general type with p_g=q=0 having an involution, Alegbraic Geometry seminar, University of Warwick in Coventry, Republic of Korea, June 10, 2009.