Talks

For the page of talks in Japanese, click here. 

2025

1. Witten’s aymptotic expansion conjecture and quantum modularity for Gukov–Pei–Putrov–Vafa invariants, the Richmond Geometry Meeting 2025, Virginia Commonwealth University, 2025 / 09 (slide)

2. A Framework for Proving Quantum Modularity: Application to Witten’s Asymptotic Expansion Conjecture, Number Theory in Field and String Theory, National Taiwan University, 2025 / 09 (slide)

3. Quantum modularity of false theta series and quantum invariants, Tokyo Metropolitan University Number Theory Seminar (jointly held with Tokyo Metropolitan University Geometry Seminar), Tokyo Metropolitan University, 2025 / 05 (slide (in Japanese))

4. Quantum modularity of false theta series and multiple Eisenstein series, Tohoku-Nagoya Zeta Conference For Young Researchers, Tohoku University, 2025 / 03(slide (in Japanese))

5. Quantum modular forms and quantum invariants of 3-manifolds , The 20th “Kagoshima Algebra-Analysis-Geometry Seminar”, Kagoshima University, 2025 / 02

6. Modular transformation formula and quantum modularity for false theta functions, The 4th Sendai Automorphic Forms Meeting, Tohoku University, 2025 / 02

7. Asymptotics and quantum modularity of WRT invariants of negative definite plumbed manifolds, The 20th East Asian Conference on Geometric Topology, The University of Tokyo, 2025 / 02 (slide)

2024

8. Asymptotic expansions and quantum modularity of WRT invariants of negative definite plumbed manifolds, Mathematics of knots VII, Waseda University, 2024 / 12 (slide)

9. Quantum modularity of multiple Eisenstein series, Sendai seminar on Multiple Eisenstein Series, Tohoku University, 2024 / 12

10. Radial limit conjecture for quantum invariants associated to non-semisimple ribbon tensor category, Tohoku knot seminar 2024, Akita University, 2024 / 10 (slide)

11. Mysterious relations between mathematical physics, topology and number theory making by quantum invariants, NTT math seminar, NTT Institute for Fundamental Mathematics, 2024 / 08

12. L-series invariants of 3-manifolds, Sendai spring conference on automorphic forms, Tohoku University, 2024 /06

13. Integrality of dynatomic polynomials for various polynomial maps, Tohoku University Number Theory Seminar, Tohoku University, 2024 / 05

14. Quantum invariants and variants of false theta function, Research Seminar on q-series, Osaka Institute of Technology, 2024 / 03

15. Radial limit conjectures for quantum invariants of plumbed manifolds, Mini-Workshop: Plumbings, Spectra, and Resurgence, the California Institute of Technology, 2024 / 03 (slide)

16. Various quantum invariants and radial limits of false theta function, RIMS conference "Research on automorphic forms", Kyoto University, 2024 / 01

17. False theta functions whose radial limits are quantum invariants, AMS Special Session on Mock Modular forms, Physics, and Applications in 2024 Joint Mathematics Meetings, Moscone Center, 2024 / 01（slide）

2023

18. WRT invariants and homological blocks for simple Lie algebras, Tohoku Knots Seminar 2023,  Yamagata University, 2023 /10 (slide (in Japanese))

19. Radial limit conjectures of quantum invariants, Conference for Young Number Theorists in Bonn, The Max Planck Institute for Mathematics, 2023 / 09 (slide)

20. Quantum invariants of 3-manifolds, false theta functions and special values of L-functions, The 22nd Hiroshima Sendai Number Theory Meeting, Hiroshima University, 2023 / 07 (slide)

21. A relation between quantum invariants of 3-manifolds and false theta functions, Number Theory Seminar, Kyoto University, 2023 / 07

22. Quantum invariants of 3-manifolds and limits of false theta functions, Tohoku University Number Theory Seminar, 2023 / 06

23. A relation between quantum invariants and related techniques, Quantum Mathematics Research Seminar, University of Southern Denmark, 2023 / 05

24. A proof of a conjecture by Gukov-Pei-Putrov-Vafa for quantum invariants of 3-manifolds, Kyushu University Algebra Seminar, Kyushu University, 2023 / 04

25. Quantum modularity of quantum invariants and related techniques, iTHEMS Math Seminar, RIKEN, 2023 / 04 

26. A proof of a conjecture by Gukov-Pei-Putrov-Vafa, Gauge Fields in Arithmetic, Topology & Physics, Edinburgh University, 2023 / 03

27. An asymptotic expansion for the Eisenstein series of weight 1 and confluent hypergeometric series, Sendai Hypergeometric Workshop, Tohoku University, 2023 / 01

2022

28. Quantum invariants and asymptotic expansion of false theta functions associated to 3-dimensional manifold, Tsuda University Number Thoery Workshop 2022, Tsuda University (talk online), 2022 / 11

29. An asymptotic formula for false theta functions and quantum invariants of plumbed homology spheres, RIMS Workshop 2022 Analytic Number Theory and Related Topics, Kyoto University, 2022 / 10 

30. WRT invariants and homological block of plumbed homology spheres, Hokuriku Knot Seminar 2022, Kanazawa University, 2022 / 09 (slide (in Japanese))

31. On quantum modular forms, The 14th Fukuoka Number Theory Conference, Kyushu University, 2022 / 08 (Presentation materials (in Japanese)）

32. Quantum invariants of plumbed homology spheres and asymptotic expansions of false theta functions, Kyushu University Algebra Seminar, Kyushu University, 2022 / 06

33. Quantum invariants of plumbed homology spheres and false theta functions, Keio University Algebra Seminar, Keio Univesity (online), 2022 / 05 (Presentation materials (in Japanese))

34. An introduction to quantum modular forms,  Tohoku University Number Theory Seminar, Tohoku University (online), 2022 / 05 (Presentation materials (in Japanese))

35. Extended-cycle integrals of modular functions for badly approximable numbers, Workshop "Number Theory and Ergodic Theory," Kanazawa University (online), 2022 / 02

36. Quantum modularity of quantum invariants of non-Seifert manifolds, RIMS conference "Automorphic form, automorphic L-functions and related topics", Kyoto University (online), 2022 / 01, (Presentation materials)

37. Quantum modular forms for non-Seifert manifolds, The 1st Sendai Automorphic Forms Meeting 2022, Tohoku University (online), 2022 / 01 (Presentation materials (in Japanese)）

38. Quantum invariants, false theta functions, and quantum modular forms for non-Seifert manifolds, Number Theory Seminar at WASEDA University, Waseda University (online) 2021 / 01 (Presentation materials (in Japanese)) 

39. Extended-cycle integrals of modular functions for badly approximable numbers, Tohoku University Algebra Seminar, Tohoku University (online), 2022 / 01 (Presentation materials (in Japanese))

2021

40. Relations of quantum invariants of non-Seifert manifolds and its quantum modularity, Friday Tea Time Zoom Seminar, online, 2021 / 12 (Presentation materials (in Japanese)) (joint talk with Akihito Mori (Tohoku University))

41. Extended-cycle integrals of the j-function for badly approximable numbers, The 20th Hiroshima Sendai Number Theory Meeting, Hiroshima University (online), 2021 / 07 (Presentation materials (in Japanese))

42. Extended-cycle integrals of the j-function for badly approximable numbers, International Seminar on Automorphic Forms, online, 2021 / 06

43. On the article by R. Menares, "Correspondences in Arakelov geometry and applications to the case of Hecke operators on modular curves," Manuscripta Mathematica 136 (2011), 501-543,  Tohoku University Number Theory Seminar, Tohoku University (online), 2021 / 06 (Presentation materials (in Japanese) )

2020

44. Hurwitz-Eichler type relation of Hurwitz class number with level and modular correspondences, KANT2020S on Zoom, Kyushu University (held online), 2020 / 08（Presentation materials (in Japanese)）

45. Continuity of the values of j-function at real quadratic points and continued fractions, The 13th Young Mathematicians Conference  on Zeta Functions, University of Toyama, 2020 / 02

2019

46. Intersection numbers of modular correspondences, RIMS conference "Automorphic forms, automorphic representations and related topics", Kyoto University, 2019 / 01

47. Continuity of the values of j-function at real quadratic points and its extension, RIMS Workshop  Algebraic Number Theory and Related Topics, Kyoto University, 2019 / 12

48. Intersection numbers of modular correspondences and class number formula, Tohoku University Number Theory Seminar, Tohoku University, 2019 / 11

49. The Continuity of values of j-function at real quadratic points, Kyushu University Algebra Seminar, Kyushu University, 2019 / 07

50. A generalization of Kaneko conjecture for  the values of j-function at real quadratic points, Tohoku University Number Theory Seminar, Tohoku University, 2019 / 07

2018

51. Intersection numbers of modular correspondences, Number Theory Seminar at WASEDA University, Waseda University, 2018 / 11

52. Method of Drawing Crease Pattern of Kamiya Pattern and Its Variations, The 7th International Meeting on Origami in Science, Mathematics and Education, University of Oxford, 2018 / 09

53. Intersection numbers of modular correspondences, Number Theory Seminar, Kyoto University, 2018 / 07

54. Intersection numbers of modular correspondences, The 17th Sendai Hiroshima Number Theory Meeting, Tohoku University, 2018 / 07

55. Intersection numbers of modular correspondences, Tokyo Institute of Technology Number Theory Seminar, Tokyo Institute of Technology, 2018 / 06

56. Intersection numbers of modular correspondences, Tohoku University Number Theory Seminar, Tohoku University, 2018 / 05

2016

57. From Kamaya patterns to skeletons, The 21st Meeting of Origami Science, Math, and Education, Origami house JOAS hall, 2016 / 12

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