HASEGAWA TAKEHIRO
| Shiga University | Professor ◎ |
| Natural Science Education (mathematics) Algebra | Professor ◎ |
Contact Pointthasegawaedu.shiga-u.ac.jp
Researcher Information
Career
- Apr. 2022 - Present
Shiga University, Faculty of Education, 教授 - Oct. 2024 - Mar. 2025
The University of Shiga Prefecture, 工学部, Part-time Lecturer - Apr. 2024 - Sep. 2024
Nara University of Education, 教育学部, Part-time Lecturer - Oct. 2023 - Mar. 2024
The University of Shiga Prefecture, School of Engineering, 非常勤講師 - Apr. 2023 - Sep. 2023
Nara University of Education, Undergraduate of Education, 非常勤講師 - Oct. 2022 - Mar. 2023
The University of Shiga Prefecture, School of Engineering, 非常勤講師 - Apr. 2022 - Oct. 2022
Nara University of Education, Undergraduate of Education, 非常勤講師 - Oct. 2021 - Mar. 2022
The University of Shiga Prefecture, School of Engineering, 非常勤講師 - Apr. 2015 - Mar. 2022
Shiga University, Faculty of Education, Associate Professor - Apr. 2021 - Sep. 2021
Nara University of Education, Undergraduate of Education, 非常勤講師 - Oct. 2020 - Mar. 2021
The University of Shiga Prefecture, 工学部, Part-time Lecturer - Apr. 2020 - Sep. 2020
Nara University of Education, Undergraduate of Education, 非常勤講師 - Oct. 2019 - Mar. 2020
The University of Shiga Prefecture, School of Engineering, Part-time Lecturer - Apr. 2019 - Sep. 2019
Nara University of Education, Undergraduate of Education, 非常勤講師 - Apr. 2014 - Mar. 2019
The University of Shiga Prefecture, School of Engineering, Part-time Lecturer - Apr. 2018 - Sep. 2018
Nara University of Education, Undergraduate of Education, 非常勤講師 - Apr. 2017 - Sep. 2017
Nara University of Education, Undergraduate of Education, 非常勤講師 - Apr. 2016 - Sep. 2016
Nagoya Institute of Technology, Faculty of Engineering, 非常勤講師 - Apr. 2016 - Sep. 2016
Yamagata University, Faculty of Science, Part-time Lecturer - Apr. 2016 - Sep. 2016
Nara University of Education, Undergraduate of Education, 非常勤講師 - Apr. 2013 - Mar. 2015
Shiga University, Shiga University, Instructor - 01 Apr. 2012 - 31 Mar. 2013
Ritsumeikan University, College of Science and Engineering, 数学嘱託講師 - Apr. 2012 - Mar. 2013
Ritsumeikan University, 理工学部, Instructor - Apr. 2012 - Mar. 2013
Tsuru University, Tsuru University, Tsuru University, Part-time Lecturer - 01 Apr. 2011 - 31 Mar. 2012
Kogakuin University, 学習支援センター, 学習支援センター講師 - Apr. 2011 - Mar. 2012
Kogakuin University, 学習支援センター, Instructor - Apr. 2010 - Mar. 2012
Josai University, Faculty of Sciences, Department of Mathematics, Part-time Lecturer - 01 Nov. 2010 - 31 Mar. 2011
The University of Electro-Communications, 情報理工学部 数学部会, 非常勤講師 - Nov. 2010 - Mar. 2011
The University of Electro-Communications, 情報理工学部数学部会, Part-time Lecturer - Apr. 2008 - Mar. 2011
Nippon Institute of Technology, Human Science and Common Education, Faculty of Engineering, Part-time Lecturer - Apr. 2007 - Mar. 2011
Kitasato University, College of Liberal Arts and Sciences, Part-time Lecturer - Apr. 2005 - Mar. 2011
Tsuru University, Tsuru University, Tsuru University, Part-time Lecturer - Apr. 2010 - Sep. 2010
University of Yamanashi, Faculty of Education and Human Sciences, Part-time Lecturer - Sep. 2007 - Mar. 2009
Waseda University, Faculty of Education and Integrated Arts and Sciences, Part-time Lecturer - Apr. 2005 - Mar. 2007
Waseda University, Faculty of Education and Integrated Arts and Sciences, Assistant
Educational Background
- Apr. 2002 - Mar. 2005, Waseda University, Graduate School, Division of Science and Engineering, Department of Mathematics
- Apr. 2000 - Mar. 2002, Waseda University, Graduate School, Division of Science and Engineering, Department of Mathematics
- Apr. 1996 - Mar. 2000, Waseda University, Faculty of Education, Department of Mathematics
Research activity information
Paper
- Lattice sums of I-Bessel functions, theta functions, linear codes and heat equations
Takehiro Hasegawa; Hayato Saigo; Seiken Saito; Shingo Sugiyama
Research in the Mathematical Sciences, Oct. 2024, Reviewed
11(4), 4 - Explicit formulas for the exponential and logarithm of the Carlitz–Tate twist, and applications
Takehiro Hasegawa
Journal de théorie des nombres de Bordeaux, Jul. 2024, Reviewed
Lead, 36(1), 1, 251, 291 - The limit theorem with respect to the matrices on non-backtracking paths of a graph
Takehiro Hasegawa; Takashi Komatsu; Norio Konno; Hayato Saigo; Seiken Saito; Iwao Sato; Shingo Sugiyama
Annals of Combinatorics, 2023, Reviewed
27(2), 2, 249, 268 - Logarithmic-type and exponential-type hypergeometric functions for function fields
Takehiro Hasegawa
Journal of Number Theory, 2022, Reviewed
Lead, 233, 87, 111 - A note on the moments of the Kesten distribution
Takehiro Hasegawa; Seiken Saito
Discrete Mathematics, 2021, Reviewed
344(10), 10 - Remarks on a paper by El-Guindy and Papanikolas
Takehiro Hasegawa
Ramanujan Journal, 2020, Reviewed
Lead, 53(1), 1, 139, 154 - A quantum probabilistic approach to Hecke algebras for p-adic PGL_2
Hasegawa, Takehiro; Saigo, Hayato; Saito, Seiken; Sugiyama, Shingo
Infinite Dimensional Analysis, Quantum Probability and Related Topics, Sep. 2018, Reviewed
21(3), 3 - A generalization of a graph theory Mertens' theorem: Galois covering case
Takehiro Hasegawa; Seiken Saito; Iwao Sato
Forum Mathematicum, May 2018, Reviewed
30(3), 3, 599, 615 - On graph theory Mertens' theorems
Takehiro Hasegawa; Seiken Saito
Graphs and Combinatorics, Sep. 2016, Reviewed
32(5), 5, 1915, 1930 - A generalization of a graph theory Mertens' theorem: abelian covering case
Takehiro Hasegawa; Seiken Saito; Iwao Sato
The Quarterly Journal of Mathematics, Sep. 2015, Reviewed
66(3), 3, 809, 836 - A generalization of the graph theory prime-number theorem of a finite graph
Takehiro Hasegawa; Seiken Saito
International Journal of Mathematics, Aug. 2015, Reviewed
26(9), 9 - A proof of a conjecture by Lötter on the roots of a supersingular polynomial and its application
Takehiro Hasegawa
Moscow Mathematical Journal, Jan. 2015, Reviewed
Lead, 15(1), 1, 89, 100 - On a prime zeta function of a graph
Takehiro Hasegawa; Seiken Saito
Pacific Journal of Mathematics, Jan. 2015, Reviewed
273(1), 1, 123, 146 - Remarks on a paper by Maharaj and Wulftange
Takehiro Hasegawa
Journal of Pure and Applied Algebra, Jan. 2013, Reviewed
Lead, 217(1), 1, 1, 10 - Some remarks on superspecial and ordinary curves of low genus
Takehiro Hasegawa
Mathematische Nachrichten, Jan. 2013, Reviewed
Lead, 286(1), 1, 17, 33 - 興味をもたせる大学初年度の数学 - 目付字から p 進体へ -
長谷川 武博
第 45 回数学教育論文発表会論文集, Nov. 2012, Reviewed
Lead, 1001, 1006 - Towers of function fields over finite fields corresponding to elliptic modular curves
Takehiro Hasegawa; Miyoko Inuzuka; Takafumi Suzuki
Finite Fields and their Applications, Jan. 2012, Reviewed
18(1), 1, 1, 18 - On the understanding of preschoolers about word problems
Takehiro Hasegawa
The Tsuru University review, Oct. 2011, Reviewed
Lead, 74, 147, 158 - On asymptotically optimal towers over quadratic fields related to Gauss hypergeometric functions
Takehiro Hasegawa
International Journal of Number Theory, Aug. 2010, Reviewed
Lead, 6(5), 5, 989, 1009 - Singular plane curves with infinitely many Galois points
Satoru Fukasawa; Takehiro Hasegawa
Journal of Algebra, Jan. 2010, Reviewed
323(1), 1, 10, 13 - A note on optimal towers over finite fields
Takehiro Hasegawa
Tokyo Journal of Mathematics, 2007, Reviewed
Lead, 30(2), 2, 477, 487 - A sequence of one-point codes from a tower of function fields
Takehiro Hasegawa; Shoichi Kondo; Hidekazu Kurusu
Designs, Codes and Cryptography. An International Journal, Dec. 2006, Reviewed
41(3), 3, 251, 267 - The generalized Garcia-Stichtenoth numbers and classfield towers
Takehiro Hasegawa
早稲田大学教育学部学術研究数学編, Feb. 2006, Invited
Lead, 54, 19, 22 - On the number of places of function fields and congruence zeta functions
Takehiro Hasegawa
Nihonkai Mathematical Journal, Jun. 2005, Reviewed
Lead, 16(1), 1, 77, 84 - An upper bound for the Garcia-Stichtenoth numbers of towers
Takehiro Hasegawa
Tokyo Journal of Mathematics, 2005, Reviewed
Lead, 28(2), 2, 471, 481
Courses
- 算数・数学科教材開発研究「数と形」
Oct. 2025 - Mar. 2026
滋賀大学 - 教職実践演習（教諭）
Oct. 2025 - Mar. 2026
滋賀大学 - 代数学講究Ⅱ
Oct. 2025 - Mar. 2026
滋賀大学 - 代数学演習
Oct. 2025 - Mar. 2026
滋賀大学 - 線型代数学演習
Oct. 2025 - Mar. 2026
滋賀大学 - 基礎代数学Ⅱ
Oct. 2025 - Mar. 2026
滋賀大学 - 数学教育の基礎
Oct. 2025 - Mar. 2026
滋賀大学 - 卒業論文
Apr. 2025 - Mar. 2026
滋賀大学 - 代数学講究Ⅰ
Apr. 2025 - Sep. 2025
滋賀大学 - 代数学概論
Apr. 2025 - Sep. 2025
滋賀大学 - 基礎代数学Ⅰ
Apr. 2025 - Sep. 2025
滋賀大学 - 教職実践演習（教諭）
Oct. 2024 - Mar. 2025
滋賀大学 - 数学教育の基礎
Oct. 2024 - Mar. 2025
滋賀大学 - 基礎代数学Ⅱ
Oct. 2024 - Mar. 2025
滋賀大学 - 線型代数学演習
Oct. 2024 - Mar. 2025
滋賀大学 - 代数学演習
Oct. 2024 - Mar. 2025
滋賀大学 - 代数学講究Ⅱ
Oct. 2024 - Mar. 2025
滋賀大学 - 数学の歴史を活かした数学教育
Oct. 2024 - Mar. 2025
滋賀大学 - 卒業論文
Apr. 2024 - Mar. 2025
滋賀大学 - 基礎代数学Ⅰ
Apr. 2024 - Sep. 2024
滋賀大学 - 代数学概論
Apr. 2024 - Sep. 2024
滋賀大学 - 代数学講究Ⅰ
Apr. 2024 - Sep. 2024
滋賀大学 - 問題解決の手法
Apr. 2024 - Sep. 2024
滋賀大学 - 代数学特論Ⅰ
滋賀大学 - 数学教育課題研究
滋賀大学 - 算数教育課題研究
滋賀大学 - 代数学演習Ⅰ
滋賀大学
Affiliated academic society
Research Themes
- Ihara zeta functions
2012 - Present - Towers of algebraic curves over finite fields
2000 - Present - グラフ上の量子カオスに関するBerry予想の考察とその応用
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Apr. 2025 - Mar. 2028
Seiken Saito, Takehiro Hasegawa, Hayato Saigo, Shingo Sugiyama - 関数体版超幾何関数を用いたドリンフェルト・モジュラー多様体の研究
基盤研究(C), 2025 - 2025 - Analysis of quantum chaos on sequences of growing graphs
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), 2022 - 2024
齋藤 正顕; 長谷川 武博; 西郷 甲矢人; 杉山 真吾 - 有限体上のドリンフェルト・モジュラー曲線の塔から生じる超幾何関数の関数体類似
日本学術振興会, 科学研究費助成事業, 基盤研究(C), Apr. 2019 - Mar. 2023 - 超特異ドリンフェルト・モジュラー多様体の体系的な構成
科研費連動型研究所助成, 科研費連動型研究所助成, Jun. 2014 - Jun. 2015
長谷川 武博
Social Contribution Activities
- 膳所高等学校 SSH
advisor
膳所高等学校, 膳所高等学校, Sep. 2024 - Feb. 2025 - 第 106 回全国算数・数学教育研究（大阪）大会指導・助言
advisor
日本数学教育学会, 第 106 回全国算数・数学教育研究（大阪）大会, 大阪府立大手前高等学校, Aug. 2024 - Aug. 2024 - 彦根東高等学校 SSH
lecturer
彦根東高等学校, 数学発展講座, 彦根東高等学校, Jul. 2024 - Jul. 2024 - 第 105 回全国算数・数学教育研究（青森）大会指導・助言
advisor
日本数学教育学会, 第 105 回全国算数・数学教育研究（青森）大会, zoom, Aug. 2023 - Aug. 2023 - 彦根東高等学校 SSH
lecturer
彦根東高等学校, 数学発展講座, 彦根東高等学校, Sep. 2022 - Sep. 2022 - 第 104 回全国算数・数学教育研究（島根）大会指導・助言
advisor
日本数学教育学会, 第 104 回全国算数・数学教育研究（島根）大会, zoom, Aug. 2022 - Aug. 2022 - 膳所高等学校SSH
advisor
膳所高等学校, Oct. 2021 - Mar. 2022 - 彦根東高等学校SSH
lecturer
彦根東高等学校, Sep. 2021 - Sep. 2021 - 彦根東高等学校SSH
lecturer
彦根東高等学校, Oct. 2020 - Oct. 2020 - 大学模擬授業（豊北ユニバーシティ）
lecturer
Nov. 2019 - Nov. 2019 - 彦根東高等学校SSH
lecturer
彦根東高等学校, Jan. 2019 - Jan. 2019 - 高大連携による講義
lecturer
Nov. 2018 - Nov. 2018 - 大学模擬授業（豊北ユニバーシティ）
lecturer
Oct. 2018 - Oct. 2018 - 彦根東高等学校SSH
lecturer
彦根東高等学校, Sep. 2018 - Sep. 2018 - 彦根東高等学校SSH
lecturer
彦根東高等学校, Sep. 2017 - Sep. 2017 - 彦根東高等学校SSH
lecturer
彦根東高等学校, Sep. 2016 - Sep. 2016 - 膳所高等学校SSH
advisor
膳所高等学校, Oct. 2015 - Mar. 2016 - 彦根東高等学校SSH
lecturer
彦根東高等学校, Oct. 2015 - Oct. 2015
