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J-GLOBAL ID：201401071319215371   Update date: Apr. 15, 2024

Hirakawa Yoshinosuke

ヒラカワ ヨシノスケ | Hirakawa Yoshinosuke
Affiliation and department：
Yamaguchi University Graduate School of Science and Technology for Innovation

About Yamaguchi University Graduate School of Science and Technology for Innovation


Job title： Associate Professor / Lecturer
Research field  (1)： Algebra
Research keywords  (2)： 数論幾何 ,  整数論
Research theme for competitive and other funds  (2)：
  • 2021 - 2025 多変数保型関数の数論幾何的研究とそのPicard数極大曲面への応用
  • 2015 - 2018 Calabi-Yau多様体の保型性予想とその精密化に関する研究
Papers (7)：
  • Yoshinosuke Hirakawa. A note on the Diophantine equation 2ln^2 = 1+q+ ... +q^α and application to odd perfect numbers. Indagationes Mathematicae. 2024. 35. 2. 282-287
  • Yoshinosuke Hirakawa, Yosuke Shimuzu. Counterexamples to the local-global principle for non-singular plane curves and a cubic analogue of Ankeny-Artin-Chowla-Mordell conjecture. Proceedings of the American Mathematical Society. 2022. 150. 1821-1835
  • Yoshinosuke Hirakawa, Yoshinori Kanamura. How to calculate the proportion of everywhere locally soluble diagonal hypersurfaces. International Journal of Number Theory. 2021. 17. 10. 2361-2377
  • Yoshinosuke Hirakawa, Hideki Matsumura. Infinitely many hyperelliptic curves with exactly two rational points. Rocky Mountain Journal of Mathematics. 2021. 51. 3
  • Yoshinosuke Hirakawa. Counterexamples to the local-global principle associated with Swinnerton-Dyer's cubic form. Rocky Mountain Journal of Mathematics. 2020. 50. 6
ｍore...
MISC (4)：
  • Yoshinosuke Hirakawa, Takuki Tomita. Absolute zeta functions arising from ceiling and floor Puiseux polynomials. arXiv:2308.03232. 2023
  • Riku Higa, Yoshinosuke Hirakawa. Galois trace forms of type A_n, D_n, E_n for odd n. arXiv:2307.06612. 2023
  • Naoto Dainobu, Yoshinosuke Hirakawa, Hideki Matsumura. Elliptic analogue of irregular prime numbers for the p^n-division fields of the curves y^2 = x^3-(s^4+t^2)x. arXiv:2205.08946. 2022
  • Yoshinosuke Hirakawa. Quadratic fields, Artin-Schreier extensions, and Bell numbers. arXiv:1912.04647. 2019
Lectures and oral presentations  (31)：
  • Digit expansion of a unit fraction and zeta values
    (2023)
  • A note on trace forms of type A n, D n, E n for odd n
    (2022)
  • Primes of the form X^3+NY^3 and a family of non-singular plane curves which violate the local-global principle
    (2020)
  • 超楕円曲線上の有理点問題
    (異分野・異業種研究交流会2020 2020)
  • A unique pair of triangles
    (RIKEN AIP Seminar 2020)
ｍore...
Education (3)：
  • 2014 - 2020 Keio University Graduate School of Science and Technology
  • 2013 - 2014 Keio University Graduate School of Science and Technology
  • 2009 - 2013 Keio University Faculty of Science and Technology
Professional career (2)：
  • 修士(理学) (慶應義塾大学)
  • 博士(理学) (慶應義塾大学)
Work history (6)：
  • 2024/04 - 現在 Yamaguchi University Graduate School of Science and Technology for Innovation Associate professor / Lecturer
  • 2021/04 - 2024/03 Tokyo University of Science Faculty of Science and Technology assistant perofessor
  • 2018/11 - 2021/03 Keio University Faculty of Science and Technology part-time researcher
  • 2018/04 - 2021/03 RIKEN AIP Math. Sci. Team part-time researcher
  • 2018/07 - 2018/10 Keio University Faculty of Science and Technology RA
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Association Membership(s) (1)：
THE MATHEMATICAL SOCIETY OF JAPAN
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