Tasaka Koji 田坂浩二

… Alternative Names

TASAKA Koji 田坂浩二

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Researcher Number	30780762
Other IDs
Affiliation (Current)	2025: 近畿大学, 理工学部, 准教授
Affiliation (based on the past Project Information) *help	2019 – 2023: 愛知県立大学, 情報科学部, 准教授 2018 – 2019: 愛知県立大学, 情報科学部, 講師 2016 – 2017: 愛知県立大学, 情報科学部, 助教
Review Section/Research Field	Principal Investigator Basic Section 11010:Algebra-related / Algebra Except Principal Investigator Basic Section 11010:Algebra-related
Keywords	Principal Investigator Broadhurst-Kreimer予想 / モジュラー形式 / 多重ゼータ値 / 多重Eisenstein級数 / 多重モジュラー値 / 整数論 / モジュラー関係式 / モジュラー現象 / レベル付き多重ゼータ値 / 多重L値 … More / 混合Tateモチーフの周期 / q-supercongruence / レベルNの多重ゼータ値 / 有限代数的数 / Kaneko-Zagier予想 / 金子-Zagier予想 / q類似 / 有限多重ゼータ値 / モチビックLie代数 / 複シャッフルリー代数 / 複シャッフル関係式 / モチビック多重ゼータ値 … More Except Principal Investigator Kashiwara-Vergne予想 / モチッヴィクガロア群 / モチヴィックガロ群 / associators / double shuffle関係式 / Teichmuller-Legoの哲学 / ダブルシャッフル関係式 / 多重ゼータ値 / 柏原-Vergne群 / ダブルシャッフル群 / グロタンディーク・タイヒミュラー群 / モチヴィックガロア群 / アソシエーター Less

The dawn of modular phenomena for higher level multiple zeta values with a new development on multiple Eisenstein seriesPrincipal Investigator
- Principal Investigator
  
  田坂浩二
- Project Period (FY)
  2023 – 2025
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 11010:Algebra-related
- Research Institution
  Aichi Prefectural University
Unified and mutually evolving study of various multiple zeta valuesPrincipal Investigator
- Principal Investigator
  
  Tasaka Koji
- Project Period (FY)
  2020 – 2023
- Research Category
  
  Grant-in-Aid for Early-Career Scientists
- Review Section
  
  Basic Section 11010:Algebra-related
- Research Institution
  Aichi Prefectural University
The outlook for the dimension conjecture and the study of Lie algebras of multiple zeta values and multiple Eisenstein seriesPrincipal Investigator
- Principal Investigator
  
  Tasaka Koji
- Project Period (FY)
  2018 – 2019
- Research Category
  
  Grant-in-Aid for Early-Career Scientists
- Review Section
  
  Basic Section 11010:Algebra-related
- Research Institution
  Aichi Prefectural University
Mathematics arising from motivic Galois groups and multiple zeta values
- Principal Investigator
  
  FURUSHO HIDEKAZU
- Project Period (FY)
  2018 – 2022
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 11010:Algebra-related
- Research Institution
  Nagoya University
Around the Broadhurst-Kreimer conjecturePrincipal Investigator
- Principal Investigator
  
  TASAKA Koji
- Project Period (FY)
  2016 – 2017
- Research Category
  
  Grant-in-Aid for Research Activity Start-up
- Research Field
  
  Algebra
- Research Institution
  Aichi Prefectural University

All 2023 2022 2021 2020 2019 2018 2017 2016

All Journal Article Presentation

[Journal Article] Catalogue of modular relations for double zeta values2023
- Author(s)
  Tasaka Koji
- Journal Title
  
  RIMS講究録
  
  Volume: 2267 Pages: 100-121
- Open Access
- Data Source
  KAKENHI-PROJECT-20K14294
[Journal Article] 複シャッフル方程式の解の構成について2023
- Author(s)
  木村藍貴, 田坂浩二
- Journal Title
  
  数理解析研究所講究録
  
  Volume: 2238 Pages: 58-66
- Open Access
- Data Source
  KAKENHI-PROJECT-18H01110
[Journal Article] Catalogue of modular relations for double zeta values2023
- Author(s)
  Koji Tasaka
- Journal Title
  
  RIMS講究録
  
  Volume: 2267
- Open Access
- Data Source
  KAKENHI-PROJECT-23K03034
[Journal Article] SUPERCONGRUENCES OF MULTIPLE HARMONIC <i>q</i>-SUMS AND GENERALIZED FINITE/SYMMETRIC MULTIPLE ZETA VALUES2023
- Author(s)
  Y. Takeyama, K. Tasaka
- Journal Title
  
  Kyushu Journal of Mathematics
  
  Volume: 77 Issue: 1 Pages: 75-120
- DOI
  10.2206/kyushujm.77.75
- ISSN
  1340-6116, 1883-2032
- Language
  English
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-20K14294, KAKENHI-PROJECT-18K03233
[Journal Article] Note on totally odd multiple zeta values2022
- Author(s)
  K. Tasaka
- Journal Title
  
  Mathematical Journal of Okayama University
  
  Volume: 64 Issue: 1 Pages: 63-73
- DOI
  10.18926/mjou/62796
- NAID
  120007172125
- URL
  https://ousar.lib.okayama-u.ac.jp/62796
- Language
  English
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18H01110
[Journal Article] On a unified double zeta function of Mordell--Tornheim type*2022
- Author(s)
  Kadota Shin-ya、Okamoto Takuya、Ono Masataka、Tasaka Koji
- Journal Title
  
  Lithuanian Mathematical Journal
  
  Volume: - Issue: 2 Pages: 207-217
- DOI
  10.1007/s10986-022-09556-x
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K14294, KAKENHI-PROJECT-18H01110
[Journal Article] Relationships between multiple zeta values of depths 2 and 3 and period polynomials2021
- Author(s)
  Ding Ma, Koji Tasaka
- Journal Title
  
  Israel Journal of Mathathematics
  
  Volume: 印刷中
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K14294
[Journal Article] Finite and symmetric colored multiple zeta values and multiple harmonic q-series at roots of unity2021
- Author(s)
  Tasaka Koji
- Journal Title
  
  Selecta Mathematica
  
  Volume: 27 Issue: 2
- DOI
  10.1007/s00029-021-00636-3
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-20K14294
[Journal Article] Note on totally odd multiple zeta values2021
- Author(s)
  Koji Tasaka
- Journal Title
  
  Mathematical Journal of Okayama University
  
  Volume: 印刷中
- NAID
  120007172125
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-20K14294
[Journal Article] Finite and symmetric Mordell–Tornheim multiple zeta values2021
- Author(s)
  BACHMANN Henrik, TAKEYAMA Yoshihiro, TASAKA Koji
- Journal Title
  
  Journal of the Mathematical Society of Japan
  
  Volume: 73 Issue: 4 Pages: 1129-1158
- DOI
  10.2969/jmsj/84348434
- NAID
  130008106917
- ISSN
  0025-5645, 1881-1167, 1881-2333
- Language
  English
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03233, KAKENHI-PROJECT-19K14499, KAKENHI-PROJECT-20K14294, KAKENHI-PROJECT-18H01110
[Journal Article] Hecke eigenform and double Eisenstein series2020
- Author(s)
  KOJI TASAKA
- Journal Title
  
  Proceedings of the American Mathematical Society
  
  Volume: 148 Issue: 1 Pages: 53-58
- DOI
  10.1090/proc/14680
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18K13393, KAKENHI-PROJECT-16H06336, KAKENHI-PROJECT-18H01110
[Journal Article] On Ecalle's and Brown's polar solutions to the double shuffle equations modulo products2019
- Author(s)
  Nils Matthes, Koji Tasaka
- Journal Title
  
  Kyushu Journal of Mathematics
  
  Volume: 73 Pages: 337-356
- NAID
  130007871386
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K13393
[Journal Article] Hecke eigenform and double Eisenstein series2019
- Author(s)
  Koji Tasaka
- Journal Title
  
  Proceedings of the American Mathematical Society
  
  Volume: 印刷中
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18H01110
[Journal Article] On Ecalle’s and Brown’s polar solutions to the double shuffle equations modulo products2019
- Author(s)
  Nils Matthes, Koji Tasaka
- Journal Title
  
  Kyushu Journal of Mathematics
  
  Volume: 印刷中
- NAID
  130007871386
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H01110
[Journal Article] On Ecalle's and Brown's polar solutions to the double shuffle equations modulo products2019
- Author(s)
  Nils Matthes、Tasaka Koji
- Journal Title
  
  Kyushu Journal of Mathematics
  
  Volume: 印刷中
- NAID
  130007871386
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K13393
[Journal Article] Hecke eigenform and double Eisenstein series2019
- Author(s)
  Tasaka Koji
- Journal Title
  
  Proceedings of the American Mathematical Society
  
  Volume: 印刷中
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K13393
[Journal Article] Evaluation of Tornheim's type of double series2017
- Author(s)
  S. Kadota, T. Okamoto, K. Tasaka
- Journal Title
  
  Illinois Journal of Mathematics
  
  Volume: 61 Pages: 171-186
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-16H07115
[Presentation] Spherical designs and modular forms of the D4-lattice2023
- Author(s)
  Koji Tasaka
- Organizer
  Number Theory Lunch Seminar, Max Planck Institute for Mathematics
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K14294
[Presentation] Spherical designs and modular forms of the D4 root lattice2023
- Author(s)
  Koji Tasaka
- Organizer
  RIMS conference ``Analytic and arithmetic aspects of automorphic representations", Kyoto University
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K14294
[Presentation] From topics on explicit relations between multiple zeta values and modular forms2023
- Author(s)
  Koji Tasaka
- Organizer
  RIMS conference ``Zeta functions and their representations", Kyoto University
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K14294
[Presentation] Around double shuffle relations2023
- Author(s)
  田坂浩二
- Organizer
  第5回青葉山ゼータ研究集会, 東北大学
- Invited
- Data Source
  KAKENHI-PROJECT-20K14294
[Presentation] 「有限」代数的数からなる環の零因子について2022
- Author(s)
  田坂浩二
- Organizer
  愛知数論セミナー, 名古屋工業大学
- Data Source
  KAKENHI-PROJECT-20K14294
[Presentation] 多重ゼータの計算入門2022
- Author(s)
  田坂浩二
- Organizer
  Computing Multiple Zeta Seminar, Zoom
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K14294
[Presentation] 有限代数的数について2021
- Author(s)
  田坂浩二
- Organizer
  九大多重ゼータセミナー
- Data Source
  KAKENHI-PROJECT-18H01110
[Presentation] 有限代数的数について2021
- Author(s)
  田坂浩二
- Organizer
  九大多重ゼータセミナー
- Data Source
  KAKENHI-PROJECT-20K14294
[Presentation] 金子-Zagier予想の広がり2021
- Author(s)
  田坂浩二
- Organizer
  2021大分整数論研究集会
- Data Source
  KAKENHI-PROJECT-18H01110
[Presentation] 金子-Zagier予想の広がり2021
- Author(s)
  田坂浩二
- Organizer
  2021大分整数論研究集会
- Invited
- Data Source
  KAKENHI-PROJECT-20K14294
[Presentation] いくつかの多重ゼータ値の有限q類似の話題から2020
- Author(s)
  田坂浩二
- Organizer
  第49回関西多重ゼータ研究会
- Data Source
  KAKENHI-PROJECT-20K14294
[Presentation] 有限多重ゼータ値とその応用2020
- Author(s)
  田坂浩二
- Organizer
  第18回量子情報ミニワークショップ
- Data Source
  KAKENHI-PROJECT-18K13393
[Presentation] いくつかの多重ゼータ値の有限q類似の話題から2020
- Author(s)
  田坂浩二
- Organizer
  第49回関西多重ゼータ研究会
- Invited
- Data Source
  KAKENHI-PROJECT-18H01110
[Presentation] Lehmer予想と球デザインに関する観察2020
- Author(s)
  田坂浩二
- Organizer
  早稲田整数論セミナー
- Data Source
  KAKENHI-PROJECT-20K14294
[Presentation] Supercongruences of q-analogues of multiple harmonic sums2020
- Author(s)
  田坂浩二
- Organizer
  Japan Europe Number Theory Exchange Seminar
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K14294
[Presentation] Toy models of double shuffle Lie algebra2019
- Author(s)
  田坂浩二
- Organizer
  信州トポロジーセミナー
- Data Source
  KAKENHI-PROJECT-18K13393
[Presentation] 有限多重調和級数の1の冪根での値と有限および対称多重ゼータ値2019
- Author(s)
  バッハマンヘンリク, 竹山美宏，田坂浩二
- Organizer
  日本数学会秋季総合分科会
- Data Source
  KAKENHI-PROJECT-18K13393
[Presentation] Period polynomial relations for double zeta values2019
- Author(s)
  田坂浩二
- Organizer
  第12回ゼータ若手研究集会
- Invited
- Data Source
  KAKENHI-PROJECT-18K13393
[Presentation] Period polynomial relations for double zeta values2019
- Author(s)
  田坂浩二
- Organizer
  第12回ゼータ若手研究集会
- Invited
- Data Source
  KAKENHI-PROJECT-18H01110
[Presentation] ヘッケ固有形式と2重アイゼンシュタイン級数2019
- Author(s)
  田坂浩二
- Organizer
  第12回東京電機大学講演会
- Data Source
  KAKENHI-PROJECT-18H01110
[Presentation] Hecke固有形式と2重Eisenstein級数2019
- Author(s)
  田坂浩二
- Organizer
  2019年日本数学会年会
- Data Source
  KAKENHI-PROJECT-18H01110
[Presentation] Finite and symmetric colored multiple zeta values2019
- Author(s)
  田坂浩二
- Organizer
  多重ゼータ値の諸相
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H01110
[Presentation] 様々な多重ゼータ値の関係について2019
- Author(s)
  田坂浩二
- Organizer
  近畿大学談話会
- Data Source
  KAKENHI-PROJECT-18K13393
[Presentation] Hecke固有形式と2重Eisenstein級数2019
- Author(s)
  田坂浩二
- Organizer
  2019年日本数学会年会
- Data Source
  KAKENHI-PROJECT-18K13393
[Presentation] Finite and symmetric colored multiple zeta values2019
- Author(s)
  Koji Tasaka
- Organizer
  RIMS conference "Various Aspects on Multiple Zeta Values"
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K13393
[Presentation] ヘッケ固有形式と2重アイゼンシュタイン級数2019
- Author(s)
  田坂浩二
- Organizer
  第12回東京電機大学数学講演会
- Data Source
  KAKENHI-PROJECT-18K13393
[Presentation] 多重ゼータ値と複シャッフルリー代数の極化2018
- Author(s)
  田坂浩二
- Organizer
  九大多重ゼータセミナー
- Data Source
  KAKENHI-PROJECT-18H01110
[Presentation] 4点抜き射影直線上の反復積分の和公式2018
- Author(s)
  田坂浩二
- Organizer
  名古屋解析数論セミナー
- Data Source
  KAKENHI-PROJECT-18H01110
[Presentation] 4点抜き射影直線上の反復積分の和公式2018
- Author(s)
  田坂浩二
- Organizer
  名古屋大学　解析数論セミナー
- Data Source
  KAKENHI-PROJECT-18K13393
[Presentation] レベル付き２重ゼータ値のモジュラー関係式について2018
- Author(s)
  田坂浩二
- Organizer
  関西多重ゼータ研究会
- Data Source
  KAKENHI-PROJECT-18K13393
[Presentation] Broadhurst-Kreimer予想について2018
- Author(s)
  田坂浩二
- Organizer
  第26回整数論サマースクール
- Data Source
  KAKENHI-PROJECT-18K13393
[Presentation] Broadhurst-Kreimer予想について2018
- Author(s)
  田坂浩二
- Organizer
  第26回整数論サマースクール
- Data Source
  KAKENHI-PROJECT-18H01110
[Presentation] 多重ゼータ値と複シャッフルリー代数の極化2018
- Author(s)
  田坂浩二
- Organizer
  九大多重ゼータセミナー
- Data Source
  KAKENHI-PROJECT-18K13393
[Presentation] 様々な多重ゼータ値の統一理論に向けて2018
- Author(s)
  田坂浩二
- Organizer
  愛知数論セミナー
- Data Source
  KAKENHI-PROJECT-18H01110
[Presentation] Anatomical decomposition of zeta elements2018
- Author(s)
  田坂浩二
- Organizer
  慶應義塾大学　代数セミナー
- Data Source
  KAKENHI-PROJECT-18K13393
[Presentation] Multiple zeta values and modular forms2018
- Author(s)
  Koji Tasaka
- Organizer
  Taiwan-Japan Joint Workshop on Multiple Zeta Values
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K13393
[Presentation] 様々な多重ゼータ値の統一理論に向けて2018
- Author(s)
  田坂浩二
- Organizer
  愛知数論セミナー
- Data Source
  KAKENHI-PROJECT-18K13393
[Presentation] Multiple zeta values and modular forms2018
- Author(s)
  田坂浩二
- Organizer
  Taiwan-Japan Joint Workshop on Multiple Zeta Values
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H01110
[Presentation] The Gangl-Kaneko-Zagier relation and the Ihara-Takao relation2018
- Author(s)
  Koji Tasaka
- Organizer
  Kyushu multi-zeta seminar
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K13393
[Presentation] The Gangl-Kaneko-Zagier relation and the Ihara-Takao relation2018
- Author(s)
  田坂浩二
- Organizer
  九大多重ゼータセミナー
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H01110
[Presentation] レベル付き2重ゼータ値のモジュラー関係式について2018
- Author(s)
  田坂浩二
- Organizer
  関西多重ゼータ研究会
- Data Source
  KAKENHI-PROJECT-18H01110
[Presentation] Anatomical decomposition of zeta elements2018
- Author(s)
  田坂浩二
- Organizer
  慶應義塾大学代数セミナー
- Data Source
  KAKENHI-PROJECT-18H01110
[Presentation] カスプ形式と２重ゼータ値について2017
- Author(s)
  田坂浩二
- Organizer
  第15回量子情報ミニワークショップ
- Place of Presentation
  浜名湖弁天島ファミリーホテル開春楼 (浜松市，静岡)
- Year and Date
  2017-01-20
- Invited
- Data Source
  KAKENHI-PROJECT-16H07115
[Presentation] ２重ゼータ値の周期多項式関係式の精密化2017
- Author(s)
  田坂浩二
- Organizer
  九州代数的整数論
- Place of Presentation
  九州大学 (福岡市, 福岡)
- Year and Date
  2017-03-08
- Invited
- Data Source
  KAKENHI-PROJECT-16H07115
[Presentation] ルート系のゼータ関数の特殊値について2016
- Author(s)
  田坂浩二
- Organizer
  首都大学整数論セミナー
- Place of Presentation
  首都大学東京 (八王子市，東京)
- Invited
- Data Source
  KAKENHI-PROJECT-16H07115
[Presentation] A refinement of period polynomial relations between double zeta values2016
- Author(s)
  Koji Tasaka
- Organizer
  8th international symposium on natural science
- Place of Presentation
  Incheon International University (Korea)
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16H07115
[Presentation] Period polynomial relations between double zeta values revisited2016
- Author(s)
  Koji Tasaka
- Organizer
  Modular Forms and Period Integrals
- Place of Presentation
  University of Tokyo (Komaba, Tokyo)
- Year and Date
  2016-09-12
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16H07115

1. FURUSHO HIDEKAZU (60377976)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
2. 大野泰生 (70330230)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
3. 安田正大 (90346065)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results

Tasaka Koji 田坂 浩二

TASAKA Koji 田坂 浩二

Research Projects

Research Products

Co-Researchers

The dawn of modular phenomena for higher level multiple zeta values with a new development on multiple Eisenstein seriesPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Unified and mutually evolving study of various multiple zeta valuesPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

The outlook for the dimension conjecture and the study of Lie algebras of multiple zeta values and multiple Eisenstein seriesPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Mathematics arising from motivic Galois groups and multiple zeta values

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Around the Broadhurst-Kreimer conjecturePrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] Catalogue of modular relations for double zeta values2023

Author(s)

Journal Title

Data Source

[Journal Article] 複シャッフル方程式の解の構成について2023

Author(s)

Journal Title

Data Source

[Journal Article] Catalogue of modular relations for double zeta values2023

Author(s)

Journal Title

Data Source

[Journal Article] SUPERCONGRUENCES OF MULTIPLE HARMONIC <i>q</i>-SUMS AND GENERALIZED FINITE/SYMMETRIC MULTIPLE ZETA VALUES2023

Author(s)

Journal Title

DOI

ISSN

Language

Data Source

[Journal Article] Note on totally odd multiple zeta values2022

Author(s)

Journal Title

DOI

NAID

URL

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[Journal Article] On a unified double zeta function of Mordell--Tornheim type*2022

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[Journal Article] Relationships between multiple zeta values of depths 2 and 3 and period polynomials2021

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[Journal Article] Finite and symmetric colored multiple zeta values and multiple harmonic q-series at roots of unity2021

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[Journal Article] Note on totally odd multiple zeta values2021

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Tasaka Koji 田坂浩二

TASAKA Koji 田坂浩二