UMEGAKI Yumiko 梅垣由美子

… Alternative Names

梅垣由美子ウメガキユミコ

UMEGAKI YUMIKO 梅垣由美子

ICHIHARA Yumiko 市原由美子

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Researcher Number	80372689
Other IDs
Affiliation (Current)	2025: 奈良女子大学, 自然科学系, 教授
Affiliation (based on the past Project Information) *help	2023: 奈良女子大学, 自然科学系, 教授 2022: 奈良女子大学, 自然科学系, 准教授 2012 – 2018: 奈良女子大学, 自然科学系, 准教授 2017: 奈良女子大学, 理学部, 准教授 2010 – 2011: Hiroshima University, 理学部, 准教授 … More 2009: Hiroshima University, 大学院・工学研究科, 准教授 2007 – 2008: Hiroshima University, 大学院・工学研究科, 助教 2005 – 2006: 広島大学, 大学院工学研究科, 助手 2004: 広島大学, 大学院・工学研究科, 助手 Less
Review Section/Research Field	Principal Investigator Algebra Except Principal Investigator Basic Section 11010:Algebra-related / Algebra
Keywords	Principal Investigator 特殊値 / 数論 / 整数論 / class number / analytic rank / 値分布 / 類数 / ジーゲル・竜沢の定理 / 蘭数 / L関数 … More / non-vanishing / Hilbert modular form / アイゼンシュタイン級数 / 2の保型形式 / 重さ3 / L関数の特殊値 / クロネッカー・フルビッツの類数公式 / 二次形式の類数 … More Except Principal Investigator 普遍性 / ゼータ関数 / 値分布 / Schur 多重ゼータ関数 / 多重ゼータ関数 / 極限定理 / 値分布論 / 対称積 L 関数 / L 関数 / Goldbach 個数関数 / 対称積L関数 / M 関数 / Giambelli 公式 / 零点分布 / p進多重L関数 / 多重ポリログ / 零点集合 / 混合型普遍性 / 特殊値 / 超平面配置 / 双曲線関数 / 保型 L 関数 / 保型L関数 / Poincare 多項式 / Laurent 展開 / 不確定特異点 / Riemann 予想 / Goldbach 予想 / ルート系 / L関数 / 混合普遍性 / Dirichlet のL関数 / 特異点解消多重ゼータ関数 / 多重保型 L 関数 / p進多重ゼータ関数 / 関数関係式 / 関数等式 / ルート系のゼータ関数 Less

Value-distribution theory of zeta and multiple zeta functions
- Principal Investigator
  
  松本耕二
- Project Period (FY)
  2022 – 2026
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 11010:Algebra-related
- Research Institution
  Aichi Institute of Technology
  Nagoya University
A study on algebraic and analytic behavior of multiple zeta-functions and multiple automorphic L-functions
- Principal Investigator
  
  Matsumoto Kohji
- Project Period (FY)
  2013 – 2017
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Algebra
- Research Institution
  Nagoya University
The order of zeros of automorphic L -functions and the value of L-functionsPrincipal Investigator
- Principal Investigator
  
  Umegaki Yumiko
- Project Period (FY)
  2011 – 2018
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Algebra
- Research Institution
  Nara Women's University
Class number and values of L-functions with cusp formsPrincipal Investigator
- Principal Investigator
  
  ICHIHARA Yumiko
- Project Period (FY)
  2007 – 2010
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Algebra
- Research Institution
  Hiroshima University
解析数論の保型L関数への応用Principal Investigator
- Principal Investigator
  
  市原由美子
- Project Period (FY)
  2004 – 2006
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Algebra
- Research Institution
  Hiroshima University

All 2020 2019 2018 2017 2016 2011 2010 2009 2008

All Journal Article Presentation

[Journal Article] Bicubic number fields with large class numbers2020
- Author(s)
  Yasuko Morita, Atsuki Umegaki and Yumiko Umegaki
- Journal Title
  
  Various Aspects of Multiple Zeta Functions in honor of Professor Kohji Matsumoto's 60th birthday, Adv. Stud. Pure Math.
  
  Volume: 印刷中
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23740020
[Journal Article] On the density function for the value-distribution of automorphic L-functions2019
- Author(s)
  Kohji Matsumoto and Yumiko Umegaki
- Journal Title
  
  Journal of Number Theory
  
  Volume: 198 Pages: 176-199
- DOI
  10.1016/j.jnt.2018.10.008
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23740020, KAKENHI-PROJECT-16H06336
[Journal Article] On the value-distribution of symmetric power L-functions2019
- Author(s)
  Kohji Matsumoto and Yumiko Umegaki
- Journal Title
  
  lecture note　series of the Ramanujan Mathematical Society
  
  Volume: 印刷中
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23740020
[Journal Article] On the value-distribution of the difference between logarithms of two symmetric power L-functions2018
- Author(s)
  Kohji Matsumoto, Yumiko Umegaki
- Journal Title
  
  International Journal of Number Theory
  
  Volume: 印刷中
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23740020
[Journal Article] On the value-distribution of the difference between logarithms of two symmetric power L-functions2018
- Author(s)
  Matsumoto Kohji、Umegaki Yumiko
- Journal Title
  
  International Journal of Number Theory
  
  Volume: 14 Issue: 07 Pages: 2045-2081
- DOI
  10.1142/s1793042118501245
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-16H06336, KAKENHI-PROJECT-23740020
[Journal Article] The first moment of L-functions of primitive forms on $￥Gamma_0(p^{￥alpha})$ and a basis of old forms2011
- Author(s)
  Yumiko Ichihara
- Journal Title
  
  Journal of Number Theory
  
  Volume: 131 Pages: 343-362
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19740015
[Journal Article] The first moment of L-functions of primitive forms on $\Gamma_0(p^{\alpha})$ and a basis of old forms.2011
- Author(s)
  Y.Ichihara
- Journal Title
  
  Journal of Number Theory vol.131, no.2
  
  Pages: 343-362
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19740015
[Journal Article] Non-vanishing of the value of L-functions attached to primitive forms at a fixed point on the critical line2010
- Author(s)
  Y.Ichihara
- Journal Title
  
  数理解析研究所講究録 1710
  
  Pages: 29-41
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19740015
[Journal Article] 保型L関数のnon-vanishing theorem2009
- Author(s)
  Y.Ichihara
- Journal Title
  
  第二回数論女性の集まり報告集
  
  Pages: 1-5
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19740015
[Journal Article] On the Siegel -Tatuzawa theorem for a class of L-functions2008
- Author(s)
  Yumiko Ichihara
- Journal Title
  
  Kyushu Journal Mathematics Vol.62no.1
  
  Pages: 201-215
- NAID
  110006648022
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19740015
[Journal Article] Estimates of a certain sum involving coefficents of cusp forms in weight and level aspects2008
- Author(s)
  Yumiko Ichihara
- Journal Title
  
  Lithuanian Mathematial Journal Vol.48
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19740015
[Journal Article] On the Siegel-Tatuzawa theorem for a class of L-functions2008
- Author(s)
  Y.Ichihara, K.Matsumoto
- Journal Title
  
  Kyushu J.Math. vol.62
  
  Pages: 201-215
- NAID
  110006648022
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19740015
[Journal Article] Siegel-Tatuzawaの定理について2008
- Author(s)
  Y.Ichihara
- Journal Title
  
  第一回数論女性の集まり報告集
  
  Pages: 1-9
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19740015
[Journal Article] Estimates of a certain sum involving coefficients of cuspforms in weight and level aspects2008
- Author(s)
  Y.Ichihara
- Journal Title
  
  Lithuanian Math.J. vol.48, no.2
  
  Pages: 188-202
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19740015
[Presentation] On the value-distribution of the difference between logarithms of two symmetric power L-functions2017
- Author(s)
  Yumiko Umegaki
- Organizer
  Various Aspects of Multiple Zeta Function
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23740020
[Presentation] On the value-distribution of the difference between logarithms of two symmetric power L-functions2016
- Author(s)
  Kohji Matsumoto　and Yumiko Umegaki
- Organizer
  Aspects on Universality 2016
- Place of Presentation
  University of Wurzburg, Germany
- Year and Date
  2016-05-06
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23740020
[Presentation] Non-vanishing of the automorphic L-functions at the pointon the critical line.2010
- Author(s)
  Y.Ichihara
- Organizer
  The 15th. Joint Workshop on Numver Theory between Japan and Taiwan
- Place of Presentation
  (in Waseda University, Organizers : YU Jing(National Taiwan Univ.), KOMATSUKei-ichi (Waseda Univ.), HASHIMOTO Ki-ichiro (Waseda Univ.), UMEGAKIAtsuki(WIAS)
- Year and Date
  2010-03-19
- Data Source
  KAKENHI-PROJECT-19740015
[Presentation] The first moment of the value of automorphic L-functions over primitive forms on the critical line.2009
- Author(s)
  Y.Ichihara
- Organizer
  CONFERENCE IN NUMBER THEORY
- Place of Presentation
  Carleton University, CANADA,Organizers : Saban Alaca, Gary Walsh, Kenneth Williams
- Year and Date
  2009-06-27
- Data Source
  KAKENHI-PROJECT-19740015
[Presentation] 保型L関数のnon-vanishing theorem.2009
- Author(s)
  Y.Ichihara
- Organizer
  研究集会「第二回数論女性の集まり」
- Place of Presentation
  (早稲田大学, 世話人:広中由美子, 太田香, 川内真由美, 市原由美子)
- Year and Date
  2009-05-09
- Data Source
  KAKENHI-PROJECT-19740015
[Presentation] Non-vanishing of the value of the L-functions attached to primitive forms on the critical line.2009
- Author(s)
  Y.Ichihara
- Organizer
  研究集会「解析整数およびその周辺の諸問題」(研究代表者:津村博文)
- Place of Presentation
  京都大学数理解析研究所,
- Year and Date
  2009-10-14
- Data Source
  KAKENHI-PROJECT-19740015
[Presentation] Cusp formに付随するL関数の1/2+itにおけるfirst moment2009
- Author(s)
  Y.Ichihara
- Organizer
  日本数学会
- Place of Presentation
  大阪大学
- Year and Date
  2009-09-24
- Data Source
  KAKENHI-PROJECT-19740015
[Presentation] primitive formに対する保型L関数のcritical line上の点におけるfirst moment.2009
- Author(s)
  Y.Ichihara
- Organizer
  研究集会「第2回ゼータ若手研究集会」
- Place of Presentation
  名古屋大学, 代表者:佐々木義卓
- Year and Date
  2009-02-21
- Data Source
  KAKENHI-PROJECT-19740015
[Presentation] Siegel-Tatuzawaの定理について2008
- Author(s)
  Y.Ichihara
- Organizer
  研究集会「第一回数論女性の集まり」
- Place of Presentation
  於早稲田大学, 世話人:広中由美子, 太田香, 大溪幸子, 市原由美子)
- Year and Date
  2008-05-17
- Data Source
  KAKENHI-PROJECT-19740015
[Presentation] Estimates of a certain sum involving coefficients of cusp forms in weight and level aspects.2008
- Author(s)
  Y.Ichihara
- Organizer
  French-Japanese Winter School on Zeta and L-functions
- Place of Presentation
  in Miura-kaigan, Organizers : K.Matsumoto and H.Tsumura
- Year and Date
  2008-01-08
- Data Source
  KAKENHI-PROJECT-19740015

1. Matsumoto Kohji (60192754)

# of Collaborated Projects: 2 results

# of Collaborated Products: 1 results
2. TSUMURA HIROFUMI (20310419)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
3. KANEKO MASANOBU (70202017)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
4. OHNO YASUO (70330230)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
5. SHOJI MAYUMI (10216161)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
6. FURUSHO HIDEKAZU (60377976)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
7. YAMASAKI YOSHINORI (00533035)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
8. NAKAMURA TAKASHI (50532355)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
9. 小森靖 (80343200)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
10. 峰正博 (80935974)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results

UMEGAKI Yumiko 梅垣 由美子

梅垣 由美子 ウメガキ ユミコ

UMEGAKI YUMIKO 梅垣 由美子

ICHIHARA Yumiko 市原 由美子

Research Projects

Research Products

Co-Researchers

Value-distribution theory of zeta and multiple zeta functions

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

A study on algebraic and analytic behavior of multiple zeta-functions and multiple automorphic L-functions

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

The order of zeros of automorphic L -functions and the value of L-functionsPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Class number and values of L-functions with cusp formsPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

解析数論の保型L関数への応用Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] Bicubic number fields with large class numbers2020

Author(s)

Journal Title

Data Source

[Journal Article] On the density function for the value-distribution of automorphic L-functions2019

Author(s)

Journal Title

DOI

Data Source

[Journal Article] On the value-distribution of symmetric power L-functions2019

Author(s)

Journal Title

Data Source

[Journal Article] On the value-distribution of the difference between logarithms of two symmetric power L-functions2018

Author(s)

Journal Title

Data Source

[Journal Article] On the value-distribution of the difference between logarithms of two symmetric power L-functions2018

Author(s)

Journal Title

DOI

Data Source

[Journal Article] The first moment of L-functions of primitive forms on $￥Gamma_0(p^{￥alpha})$ and a basis of old forms2011

Author(s)

Journal Title

Data Source

[Journal Article] The first moment of L-functions of primitive forms on $\Gamma_0(p^{\alpha})$ and a basis of old forms.2011

Author(s)

Journal Title

Data Source

[Journal Article] Non-vanishing of the value of L-functions attached to primitive forms at a fixed point on the critical line2010

Author(s)

Journal Title

Data Source

[Journal Article] 保型L関数のnon-vanishing theorem2009

Author(s)

Journal Title

Data Source

[Journal Article] On the Siegel -Tatuzawa theorem for a class of L-functions2008

Author(s)

Journal Title

NAID

Data Source

UMEGAKI Yumiko 梅垣由美子

梅垣由美子ウメガキユミコ

UMEGAKI YUMIKO 梅垣由美子

ICHIHARA Yumiko 市原由美子