KOGA Hirotaka 古賀寛尚

Researcher Number	30736723
Other IDs
Affiliation (Current)	2021: 東京電機大学, システムデザイン工学部, 助教
Affiliation (based on the past Project Information) *help	2014 – 2016: 東京電機大学, 情報環境学部, 助教 2013: 筑波大学, 数理物質系, 特別研究員PD
Review Section/Research Field	Principal Investigator Algebra Except Principal Investigator Algebra
Keywords	Principal Investigator 多元環の表現論 / 導来同値 / ゴレンシュタイン次元 / アーベル圏 / 代数学 Except Principal Investigator アウスランダー・ゴレンシュタイン環 / 非可換ゴレンシュタイン環 / 非可換ネター環 / 自己移入次元 / 被約グレード … More

Derived equivalences and Gorenstein dimensionPrincipal Investigator
- Principal Investigator
  
  KOGA Hirotaka
- Project Period (FY)
  2014 – 2015
- Research Category
  
  Grant-in-Aid for Research Activity Start-up
- Research Field
  
  Algebra
- Research Institution
  Tokyo Denki University
Gorenstein dimension in Derived categories
- Principal Investigator
  
  HOSHINO Mitsuo
- Project Period (FY)
  2014 – 2016
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Algebra
- Research Institution
  University of Tsukuba
Study of noncommutative Gorenstein rings
- Principal Investigator
  
  HOSHINO Mitsuo
- Project Period (FY)
  2011 – 2013
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Algebra
- Research Institution
  University of Tsukuba

All 2016 2015 2014 2013 2012 2011 Other

All Journal Article Presentation

[Journal Article] Clifford extensions2016
- Author(s)
  M. Hoshino, N. Kameyama and H. Koga
- Journal Title
  
  Comm. Algebra
  
  Volume: 44 Pages: 1695-1703
- DOI
  10.1080/00927872.2015.1027392
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-25287001, KAKENHI-PROJECT-26400036
[Journal Article] Group-graded and group-bigraded rings2016
- Author(s)
  M. Hoshino, N. Kameyama and H. Koga
- Journal Title
  
  J. Algebra Appl.
  
  Volume: 14
- DOI
  10.1142/s0219498815501005
- NAID
  120005613907
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26400036, KAKENHI-PROJECT-25287001
[Journal Article] Construction of Auslander-Gorenstein local rings as Frobenius extensions2015
- Author(s)
  M. Hoshino, N. Kameyama and H. Koga
- Journal Title
  
  Colloq. Math.
  
  Volume: 141 Pages: 1-11
- DOI
  10.4064/cm141-1-1
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26400036, KAKENHI-PROJECT-25287001
[Journal Article] Clifford extension2015
- Author(s)
  M. Hoshino, N. Kameyama and H. Koga
- Journal Title
  
  Comm. Algebra
  
  Volume: 印刷中
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26887034
[Journal Article] Group-graded and group-bigraded rings2015
- Author(s)
  M. Hoshino, N. Kameyama and H. Koga
- Journal Title
  
  J. Algebra Appl.
  
  Volume: 印刷中
- NAID
  120005613907
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26887034
[Journal Article] Construction of Auslander-Gorenstein local rings as Frobenius extensions2015
- Author(s)
  M. Hoshino, N. Kameyama and H. Koga
- Journal Title
  
  Colloq. Math.
  
  Volume: 印刷中
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26887034
[Journal Article] Zaks’ lemma for coherent rings2013
- Author(s)
  M. Hoshino and H. Koga
- Journal Title
  
  Algebras and Representation Theory
  
  Volume: vol.16 Pages: 1647-1660
- DOI
  10.1007/s10468-012-9376-9
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-12J02105, KAKENHI-PROJECT-23540040, KAKENHI-PROJECT-25287001
[Journal Article] Finiteness of selfinjective dimension for noetherian algebras2013
- Author(s)
  M. Hoshino and H. Koga
- Journal Title
  
  Comm. Algebra
  
  Volume: 41 Pages: 3414-3428
- DOI
  10.1080/00927872.2012.686645
- NAID
  120005613882
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-12J02105, KAKENHI-PROJECT-23540040, KAKENHI-PROJECT-25287001
[Journal Article] Auslander-Gorenstein resolution2012
- Author(s)
  M. Hoshino and H. Koga
- Journal Title
  
  J. Pure Appl. Algebra
  
  Volume: vol.216 Pages: 130-139
- DOI
  10.1016/j.jpaa.2011.05.011
- NAID
  120003752223
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23540040
[Presentation] Artin's problem2016
- Author(s)
  古賀寛尚
- Organizer
  第21 回代数学若手研究会
- Place of Presentation
  奈良女子大学(奈良県, 奈良市)
- Year and Date
  2016-03-28
- Invited
- Data Source
  KAKENHI-PROJECT-26887034
[Presentation] On modules of infinite reduced grade2016
- Author(s)
  M. Hoshino, N. Kameyama and H. Koga
- Organizer
  環論および表現論シンポジウム
- Place of Presentation
  大阪府立大学中百舌鳥キャンパス（大阪府堺市）
- Year and Date
  2016-08-31
- Data Source
  KAKENHI-PROJECT-26400036
[Presentation] Crossed products, Frobenius extension, Auslander-Gorenstein ring2015
- Author(s)
  亀山統胤・星野光男・古賀寛尚
- Organizer
  第48回環論および表現論シンポジウム
- Place of Presentation
  名古屋大学(愛知県, 名古屋市)
- Year and Date
  2015-09-07
- Data Source
  KAKENHI-PROJECT-26887034
[Presentation] Crossed products for matrix rings2015
- Author(s)
  M. Hoshino, N. Kameyama and H. Koga
- Organizer
  第４８回環論および表現論シンポジウム
- Place of Presentation
  名古屋大学（愛知県名古屋市）
- Year and Date
  2015-09-07
- Data Source
  KAKENHI-PROJECT-26400036
[Presentation] Derived equivalences and Gorenstein projective dimension2015
- Author(s)
  Hirotaka Koga
- Organizer
  Derived categories of nite dimensional algebras
- Place of Presentation
  静岡大学(静岡県, 静岡市)
- Year and Date
  2015-09-11
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26887034
[Presentation] Derived equivalences and Gorenstein projective dimension2015
- Author(s)
  古賀寛尚・星野光男
- Organizer
  第48回環論および表現論シンポジウム
- Place of Presentation
  名古屋大学(愛知県, 名古屋市)
- Year and Date
  2015-09-07
- Data Source
  KAKENHI-PROJECT-26887034
[Presentation] Derived equivalences and Gorenstein projective dimension2015
- Author(s)
  古賀寛尚
- Organizer
  第60回代数学シンポジウム
- Place of Presentation
  静岡大学(静岡県, 静岡市)
- Year and Date
  2015-08-31
- Invited
- Data Source
  KAKENHI-PROJECT-26887034
[Presentation] Clifford extensions2015
- Author(s)
  Mitsuo HOSHINO, Noritsugu KAMEYAMA and Hirotaka KOGA
- Organizer
  THE SEVENTH CHINA-JAPAN-KOREA INTERNATIONAL SYMPOSIUM ON RING THEORY
- Place of Presentation
  Zhejiang University of Technology and Zhejiang University(China)
- Year and Date
  2015-07-02
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26887034
[Presentation] ホモロジー代数的予想とその周辺2014
- Author(s)
  古賀寛尚
- Organizer
  組合せ論セミナー
- Place of Presentation
  東北大学(宮城県, 仙台市)
- Year and Date
  2014-12-26
- Invited
- Data Source
  KAKENHI-PROJECT-26887034
[Presentation] Group-graded and group-bigraded rings2013
- Author(s)
  M. Hoshino, N. Kameyama and H. Koga
- Organizer
  第４６回環論および表現論シンポジウム
- Place of Presentation
  東京理科大学神楽坂キャンパス、東京
- Data Source
  KAKENHI-PROJECT-23540040
[Presentation] Group-graded and group-bigraded rings2013
- Author(s)
  M. Hoshino, N. Kameyama and H. Koga
- Organizer
  第46回環論および表現論シンポジウム
- Place of Presentation
  東京理科大学神楽坂キャンパス, 東京
- Year and Date
  2013-10-13
- Data Source
  KAKENHI-PROJECT-23540040
[Presentation] Clifford extensions2013
- Author(s)
  M. Hoshino, N. Kameyama and H. Koga
- Organizer
  第４６回環論および表現論シンポジウム
- Place of Presentation
  東京理科大学神楽坂キャンパス、東京
- Data Source
  KAKENHI-PROJECT-23540040
[Presentation] Clifford extensions2013
- Author(s)
  M. Hoshino, N. Kameyama and H. Koga
- Organizer
  第46回環論および表現論シンポジウム
- Place of Presentation
  東京理科大学神楽坂キャンパス, 東京
- Year and Date
  2013-10-13
- Data Source
  KAKENHI-PROJECT-23540040
[Presentation] Constructions of Auslander-Gorenstein local rings2012
- Author(s)
  M. Hoshino, N. Kameyama and H. Koga
- Organizer
  第４５回環論および表現論シンポジウム
- Place of Presentation
  信州大学（長野県）
- Data Source
  KAKENHI-PROJECT-23540040
[Presentation] Constructions of Auslander-Gorenstein local rings2012
- Author(s)
  M. Hoshino, N. Kameyama and H. Koga
- Organizer
  第45回環論および表現論シンポジウム
- Place of Presentation
  信州大学, 松本
- Year and Date
  2012-09-07
- Data Source
  KAKENHI-PROJECT-23540040
[Presentation] Weak Gorenstein dimension for modules and Gorenstein algebras2011
- Author(s)
  M. Hoshino and H. Koga
- Organizer
  第44回環論および表現論シンポジウム
- Place of Presentation
  岡山大学, 岡山
- Year and Date
  2011-09-26
- Data Source
  KAKENHI-PROJECT-23540040
[Presentation] On standard derived equivalences
- Author(s)
  古賀寛尚
- Organizer
  2014年度日本数学会秋季総合分科会
- Place of Presentation
  広島大学(広島県, 東広島市)
- Year and Date
  2014-09-25 – 2014-09-28
- Data Source
  KAKENHI-PROJECT-26887034
[Presentation] Rings derived equivalent to Z
- Author(s)
  古賀寛尚
- Organizer
  2015年度日本数学会年会
- Place of Presentation
  明治大学(東京都, 千代田区)
- Year and Date
  2015-03-21 – 2015-03-24
- Data Source
  KAKENHI-PROJECT-26887034
[Presentation] Group-graded and group-bigraded rings
- Author(s)
  星野光男・亀山統胤・古賀寛尚
- Organizer
  2014年度日本数学会秋季総合分科会
- Place of Presentation
  広島大学(広島県, 東広島市)
- Year and Date
  2014-09-25 – 2014-09-28
- Data Source
  KAKENHI-PROJECT-26887034
[Presentation] Rings derived equivalent to Z
- Author(s)
  古賀寛尚
- Organizer
  第20回代数学若手研究会
- Place of Presentation
  名古屋大学(愛知県, 名古屋市)
- Year and Date
  2015-03-18 – 2015-03-20
- Data Source
  KAKENHI-PROJECT-26887034
[Presentation] Weak Gorenstein dimension for modules and Gorenstein algebras
- Author(s)
  M. Hoshino and H. Koga
- Organizer
  第４４回環論および表現論シンポジウム
- Place of Presentation
  岡山大学
- Data Source
  KAKENHI-PROJECT-23540040
[Presentation] Dualities in stable categories
- Author(s)
  M. Hoshino, N. Kameyama and H. Koga
- Organizer
  代４７回環論および表現論シンポジウム
- Place of Presentation
  大阪市立大学
- Year and Date
  2014-09-13 – 2014-09-15
- Data Source
  KAKENHI-PROJECT-26400036
[Presentation] Dualities in stable categories
- Author(s)
  古賀寛尚・星野光男・亀山統胤
- Organizer
  第47回環論および表現論シンポジウム
- Place of Presentation
  大阪市立大学(大阪府, 大阪市)
- Year and Date
  2014-09-13 – 2014-09-15
- Data Source
  KAKENHI-PROJECT-26887034

1. HOSHINO Mitsuo (90181495)

# of Collaborated Projects: 2 results

# of Collaborated Products: 22 results
2. KAMEYAMA Noritsugu (00780024)

# of Collaborated Projects: 2 results

# of Collaborated Products: 12 results
3. NISHIDA Kenji (70125392)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results

KOGA Hirotaka 古賀 寛尚

Research Projects

Research Products

Co-Researchers

Derived equivalences and Gorenstein dimensionPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Gorenstein dimension in Derived categories

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Study of noncommutative Gorenstein rings

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] Clifford extensions2016

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Group-graded and group-bigraded rings2016

Author(s)

Journal Title

DOI

NAID

Data Source

[Journal Article] Construction of Auslander-Gorenstein local rings as Frobenius extensions2015

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Clifford extension2015

Author(s)

Journal Title

Data Source

[Journal Article] Group-graded and group-bigraded rings2015

Author(s)

Journal Title

NAID

Data Source

[Journal Article] Construction of Auslander-Gorenstein local rings as Frobenius extensions2015

Author(s)

Journal Title

Data Source

[Journal Article] Zaks’ lemma for coherent rings2013

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Finiteness of selfinjective dimension for noetherian algebras2013

Author(s)

Journal Title

DOI

NAID

Data Source

[Journal Article] Auslander-Gorenstein resolution2012

Author(s)

Journal Title

DOI

NAID

Data Source

[Presentation] Artin's problem2016

Author(s)

Organizer

Place of Presentation

Year and Date

Data Source

[Presentation] On modules of infinite reduced grade2016

Author(s)

Organizer

Place of Presentation

Year and Date

Data Source

KOGA Hirotaka 古賀寛尚