Researchers

TASAKA Koji

TASAKA Koji
Associate Professor
Faculty Department of Science / Graduate School of Science and Engineering
Researchmap https://researchmap.jp/kojitasaka

Education and Career

Education

  • 2005/04 - 2009/03 , Kinki University, Department of Mathematics,
  • 2009/04 - 2011/03 , Kyushu University, Graduate School of Mathematics,
  • 2011/04 - 2014/03 , Kyushu University, Graduate School of Mathematics,

Academic & Professional Experience

  • Apr. 2024 , Kindai University Department of Mathematics
  • Apr. 2020 - Mar. 2024 , Aichi Prefectural University School of Information Science and Technology 准教授
  • Apr. 2018 - Mar. 2020 , Aichi Prefectural University School of Information Science and Technology Lecturer
  • Apr. 2016 - Mar. 2018 , Aichi Prefectural University School of Information Science and Technology Assictant professor
  • Apr. 2017 - Feb. 2018 , Max Planck Institute for Mathematics Guest Scientist
  • Apr. 2015 - Mar. 2016 , Nagoya University Graduate School of Mathematics Research Fellow of the Japan Society for the Promotion of Science (JSPS Research Fellow)
  • Jul. 2014 - Mar. 2015 , POSTECH Pohang Mathematical Institute 学術研究員
  • Apr. 2014 - May. 2014 , Kyushu University 大学院数理学研究院 博士研究員
  • Apr. 2012 - Mar. 2014 , Kyushu University Graduate School of Mathematics Research Fellow of the Japan Society for the Promotion of Science (JSPS Research Fellow)

Research Activities

Research Areas

  • Natural sciences, Algebra

Research Interests

Spherical design, Modular Forms, Multiple zeta value, Number Theory

Published Papers

  1. The ring of finite algebraic numbers and its application to the law of decomposition of primes
    Julian Rosen; Yoshihiro Takeyama; Koji Tasaka; Shuji Yamamoto
    Journal of Number Theory  263  , 335-365, Oct. 2024 
  2. Spherical designs and modular forms of the $$D_4$$ lattice
    Masatake Hirao; Hiroshi Nozaki; Koji Tasaka
    Research in Number Theory  9  (4)  1, Nov. 2023  , Refereed
  3. Supercongruences of multiple harmonic $q$-sums and generalized finite/symmetric multiple zeta values
    Yoshihiro Takeyama; Koji Tasaka
    Kyushu Journal of Mathematics  77  (1)  , 75-120, Feb. 2023  , Refereed

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Conference Activities & Talks

  1. Spherical designs and modular forms , 田坂浩二 , 神戸 組合せ論・モデル理論セミナー, Zoom , 9, Sep. 2024
  2. 多重ゼータ値代数のモジュラー現象について , 第69回代数学シンポジウム, 筑波大学 , 26, Aug. 2024
  3. 球面デザインとモジュラー形式のフーリエ係数の非零問題 , 田坂浩二 , 愛知数論セミナー, 名古屋工業大学 , 20, Jul. 2024

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MISC

  1. Catalogue of modular relations for double zeta values , Koji Tasaka , RIMS Kokyuroku "Zeta functions and their representations" , 2267 , 100 , 121 , Nov. 2023
  2. The harmonic strength of shells of lattices and weighted theta series , Koji Tasaka , RIMS Kokyuroku "Analytic and arithmetic aspects of automorphic representations" , 2264 , 17 , 29 , Aug. 2023
  3. 2重 Eisenstein 級数とその周辺 (解析的整数論 : 数論的関数の多重性に関連して) , 田坂 浩二 , 数理解析研究所講究録 , 1806 , 200 , 209 , Sep. 2012

Awards & Honors

  1. Feb. 2014, 日本数学会九州支部, 九州若手数学賞

Research Grants & Projects

  1. Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The dawn of modular phenomena for higher level multiple zeta values with a new development on multiple Eisenstein series , Aichi Prefectural University
  2. 日本学術振興会, 科学研究費助成事業, 種々の多重ゼータ値の統一的および相互発展的な研究 , 愛知県立大学
  3. 日本学術振興会, 科学研究費助成事業, モチヴィックガロア群と多重ゼータ値から広がる数学ー整数論からの解放ー , 名古屋大学

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