Okada Takuzo 岡田拓三

… Alternative Names

OKADA Takuzo 岡田拓三

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Researcher Number	20547012
Other IDs
Affiliation (Current)	2025: 九州大学, 数理学研究院, 教授
Affiliation (based on the past Project Information) *help	2024: 九州大学, 数理学研究院, 教授 2021 – 2023: 佐賀大学, 理工学部, 教授 2022: 九州大学, 数理学研究院, 教授 2018 – 2020: 佐賀大学, 理工学部, 准教授 2015 – 2017: 佐賀大学, 工学(系)研究科(研究院), 准教授 … More 2012 – 2014: 佐賀大学, 工学(系)研究科(研究院), 講師 2013: 佐賀大学, 大学院工学系研究科, 教授 2009 – 2010: Kyoto University, 数理解析研究所, 特定研究員(グローバルCOE) Less
Review Section/Research Field	Principal Investigator Algebra / Basic Section 11010:Algebra-related Except Principal Investigator Algebra / Basic Section 11010:Algebra-related
Keywords	Principal Investigator ファノ多様体 / 有理性問題 / K安定性 / 双有理剛性 / del Pezzo曲面束 / del Pezzo束 / 重み付き超曲面 / 森ファイバー空間 / 双有理堅牢性 / del Pezzo 束 … More / 安定有理性 / コニック束 / 代数幾何学 / 重み付き完全交叉 / 有理性 / 双有理的有界性 / Qファノ多様体 / 双有理的非有界性 / 有理連結多様体 … More Except Principal Investigator 代数幾何学 / Castelnuovo-Mumford正則量 / Castelnuovo-Mumford / シジジー / 射影多様体 / 可換環論 / 代数幾何 / 不分岐コホモロジー群 / 双有理不変量 / 有理性問題 / ハッセ・ノルム原理 / 代数的トーラス / 算術階数 / Stanley-Reisner イデアル / Stanley-Reisnerイデアル / 記号的べき / 射影次元 / 辺イデアル / Segre積 / ベクトル束 / Del Pezzo多様体 / Buchsbaum多様体 / Buchsbaum 多様体 / 自由分解 / Castelnuovo / Horrocks判定法 / 極小自由分解 / 多項式イデアル Less

Number theory and algebraic geometry and computer mathematics - New developments on rationality problems for algebraic varieties -
- Principal Investigator
  
  星明考
- Project Period (FY)
  2024 – 2026
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 11010:Algebra-related
- Research Institution
  Niigata University
Birational geometry of Fano varietiesPrincipal Investigator
- Principal Investigator
  
  岡田拓三
- Project Period (FY)
  2022 – 2026
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 11010:Algebra-related
- Research Institution
  Kyushu University
  Saga University
Rationality problem of algebraic varieties and related topicsPrincipal Investigator
- Principal Investigator
  
  Okada Takuzo
- Project Period (FY)
  2018 – 2022
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 11010:Algebra-related
- Research Institution
  Saga University
Castelnuovo-Mumford regularity and syzygies for projective varieties and its related topics
- Principal Investigator
  
  Miyazaki Chikashi
- Project Period (FY)
  2014 – 2019
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Algebra
- Research Institution
  Kumamoto University
  Saga University
Arithmetical rank of Stanley-Reisner ideals and projective dimension of their powers
- Principal Investigator
  
  Terai Naoki
- Project Period (FY)
  2014 – 2016
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Algebra
- Research Institution
  Saga University
Birational Mori fiber structures of Fano varieties and rationality problemPrincipal Investigator
- Principal Investigator
  
  Okada Takuzo
- Project Period (FY)
  2014 – 2017
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Algebra
- Research Institution
  Saga University
Explicit study of rationality of Q-Fano varieties and its related topicsPrincipal Investigator
- Principal Investigator
  
  OKADA Takuzo
- Project Period (FY)
  2012 – 2013
- Research Category
  
  Grant-in-Aid for Research Activity Start-up
- Research Field
  
  Algebra
- Research Institution
  Saga University
Castelnuovo-Mumford regularity for projective variety and its related topics
- Principal Investigator
  
  MIYAZAKI Chikashi
- Project Period (FY)
  2009 – 2013
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Algebra
- Research Institution
  Saga University
Birational geometry of nonrational rationally connected varietiesPrincipal Investigator
- Principal Investigator
  
  OKADA Takuzo
- Project Period (FY)
  2009 – 2010
- Research Category
  
  Grant-in-Aid for Research Activity Start-up
- Research Field
  
  Algebra
- Research Institution
  Kyoto University

All 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2010 2009

All Journal Article Presentation

[Journal Article] Stable rationality of index one Fano hypersurfaces containing a linear space2022
- Author(s)
  Takuzo Okada
- Journal Title
  
  European Journal of Mathematics
  
  Volume: 8 Issue: 3 Pages: 1158-1171
- DOI
  10.1007/s40879-021-00513-5
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K03216, KAKENHI-PROJECT-23K22389
[Journal Article] Smooth weighted hypersurfaces that are not stably rational2021
- Author(s)
  Takuzo Okada
- Journal Title
  
  Ann. Inst. Fourier (Grenoble)
  
  Volume: 71 Issue: 1 Pages: 203-237
- DOI
  10.5802/aif.3390
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18K03216
[Journal Article] Alpha invariants of birationally bi-rigid Fano 3-folds I2021
- Author(s)
  In-Kyun Kim、Takuzo Okada、Joonyeong Won
- Journal Title
  
  European Journal of Mathematics
  
  Volume: 7 Issue: 1 Pages: 272-308
- DOI
  10.1007/s40879-020-00441-w
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03216
[Journal Article] Birational Mori fiber structures of Q-Fano 3-fold weighted complete intersections, III2020
- Author(s)
  Takuzo Okada
- Journal Title
  
  Kyoto Journal of Mathematics
  
  Volume: 60 Issue: 3 Pages: 825-893
- DOI
  10.1215/21562261-2019-0048
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K03216
[Journal Article] Birationally superrigid Fano 3-folds of codimension 42020
- Author(s)
  Takuzo Okada
- Journal Title
  
  Algebra & Number Theory
  
  Volume: 14 Issue: 1 Pages: 191-212
- DOI
  10.2140/ant.2020.14.191
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K03216
[Journal Article] Stable Rationality of del Pezzo Fibrations of Low Degree Over Projective Spaces2020
- Author(s)
  Igor Krylov、Takuzo Okada
- Journal Title
  
  International Mathematics Research Notices
  
  Volume: 2020 Issue: 23 Pages: 9075-9119
- DOI
  10.1093/imrn/rny252
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03216
[Journal Article] On birational rigidity of singular del Pezzo fibrations of degree 12020
- Author(s)
  Takuzo Okada
- Journal Title
  
  Journal of the London Mathematical Society
  
  Volume: 102 Issue: 1 Pages: 1-21
- DOI
  10.1112/jlms.12304
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K03216
[Journal Article] Stable Rationality of Cyclic Covers of Projective Spaces2019
- Author(s)
  Takuzo Okada
- Journal Title
  
  Proceedings of the Edinburgh Mathematical Society
  
  Volume: 62 Issue: 3 Pages: 667-682
- DOI
  10.1017/s0013091518000755
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K03216, KAKENHI-PROJECT-26400048
[Journal Article] Stable rationality of orbifold Fano 3-fold hypersurfaces2019
- Author(s)
  Takuzo Okada
- Journal Title
  
  Journal of Algebraic Geometry
  
  Volume: 28 Issue: 1 Pages: 99-138
- DOI
  10.1090/jag/712
- NAID
  120005973323
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K03216, KAKENHI-PROJECT-26400048
[Journal Article] Birationally rigid Pfaffian Fano 3-folds2018
- Author(s)
  Hamid Ahmadinezhad, Takuzo Okada
- Journal Title
  
  Algebraic Geometry
  
  Volume: 5 Pages: 160-199
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800019
[Journal Article] Alpha Invariants of Birationally Rigid Fano Three-folds2018
- Author(s)
  In-Kyun Kim, Takuzo Okada, Joonyeong Won
- Journal Title
  
  International Mathematics Research Notices
  
  Volume: 印刷中 Pages: 2745-2800
- DOI
  10.1093/imrn/rnw310
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800019, KAKENHI-PROJECT-26400048
[Journal Article] Birational Mori fiber structures of Q-Fano 3-fold weighted complete intersections, II2018
- Author(s)
  Takuzo Okada
- Journal Title
  
  Journal fur die reine und angewandte Mathematik
  
  Volume: 印刷中 Issue: 738 Pages: 160-199
- DOI
  10.1515/crelle-2015-0054
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800019, KAKENHI-PROJECT-26400048
[Journal Article] Stable rationality of higher dimensional conic bundles2018
- Author(s)
  Hamid Ahmadinezhad、Takuzo Okada
- Journal Title
  
  Epijournal del Geometrie Algebrique
  
  Volume: 2 Pages: 1-13
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03216
[Journal Article] Q-Fano threefolds with three birational Mori fiber structures2017
- Author(s)
  Takuzo Okada
- Journal Title
  
  "Algebraic Varieties and Automorphism Groups", Advanced Studies in Pure Mathematics
  
  Volume: 75 Pages: 393-424
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26800019
[Journal Article] Nonrational del Pezzo fibrations admitting an action of the Klein simple group2016
- Author(s)
  Takuzo Okada
- Journal Title
  
  Eur. J. Math
  
  Volume: 2 Pages: 319-332
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26400048
[Journal Article] Nonrational del Pezzo fibrations admitting an action of the Klein simple group2016
- Author(s)
  Takuzo Okada
- Journal Title
  
  European Journal of Mathematics
  
  Volume: 2 Issue: 1 Pages: 319-332
- DOI
  10.1007/s40879-015-0080-2
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-26800019
[Journal Article] Birational Mori fiber structures of Q-Fano threefold weighted complete intersections2014
- Author(s)
  Takuzo Okada
- Journal Title
  
  Proc. London Math. Soc.
  
  Volume: 109 Issue: 6 Pages: 1549-1600
- DOI
  10.1112/plms/pdu044
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26400048, KAKENHI-PROJECT-26800019
[Journal Article] Takuzo Okada, Birational superrigidity and slope stability of Fano manifolds2013
- Author(s)
  Yuji Odaka
- Journal Title
  
  Mathematische Zeitschrift
  
  Volume: vol.275, Issue 3-4 Issue: 3-4 Pages: 1109-1119
- DOI
  10.1007/s00209-013-1172-7
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-24840034
[Journal Article] Birational superrigidity and slope stability of Fano manifolds2013
- Author(s)
  Yuji Odaka and Takuzo Okada
- Journal Title
  
  Math. Z.
  
  Volume: 273 Pages: 1109-1119
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21540044
[Journal Article] Birational superrigidity and slope stability of Fano manifolds2013
- Author(s)
  Odaka Yuji and Okada Takuzo
- Journal Title
  
  Math. Z
  
  Volume: 275
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21540044
[Journal Article] Birational unboundedness of log terminal Q-Fano varieties and rationally connected strict Mori fiber spaces2010
- Author(s)
  Takuzo Okada
- Journal Title
  
  RIMS preprint RIMS-1706
  
  Pages: 1-27
- Data Source
  KAKENHI-PROJECT-21840032
[Journal Article] Birational unboundedness of log terminal Q-Fano varieties and rationally connected strict Mori fiber spaces2010
- Author(s)
  Takuzo Okada
- Journal Title
  
  RIMS Preprint
  
  Volume: RIMS-1706 Pages: 1-27
- Data Source
  KAKENHI-PROJECT-21840032
[Journal Article] On the birational unboundedness of higher dimensional Q-Fano varieties2009
- Author(s)
  Takuzo Okada
- Journal Title
  
  Mathematische Annalen Vol.345
  
  Pages: 195-212
- NAID
  120001723784
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21840032
[Journal Article] On the birational unboundedness of higher dimensional Q-Fano varieties2009
- Author(s)
  Takuzo Okada
- Journal Title
  
  Mathematische Annalen Vol. 345
  
  Pages: 195-212
- NAID
  120001723784
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21840032
[Journal Article] Nonrational weighted hypersurfaces2009
- Author(s)
  Takuzo Okada
- Journal Title
  
  Nagoya Mathematical Journal Vol. 194
  
  Pages: 1-32
- NAID
  120005763694
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21840032
[Presentation] Birational rigidity of certain singular Fano 3-folds2022
- Author(s)
  Takuzo Okada
- Organizer
  The 21st Affine Algebraic Geometry Meeting
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03216
[Presentation] On birationally solid Fano 3-fold hypersurfaces2022
- Author(s)
  Takuzo Okada
- Organizer
  Algebraic Geometry Seminar (IBS-CGP, Pohang, Korea)
- Invited
- Data Source
  KAKENHI-PROJECT-18K03216
[Presentation] Birational rigidity of certain singular Fano 3-folds2022
- Author(s)
  岡田拓三
- Organizer
  The 21st Affine Algebraic Geometry Meeting
- Invited
- Data Source
  KAKENHI-PROJECT-23K22389
[Presentation] On birationally solid Fano 3-fold hypersurfaces2022
- Author(s)
  Takuzo Okada
- Organizer
  Algebraic Geometry Seminar at IBS-CGP
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23K22389
[Presentation] On birationally solid Fano 3-folds2022
- Author(s)
  Takuzo Okada
- Organizer
  Rationality, Moduli Spaces, and Related Topics
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03216
[Presentation] On birationally solid Fano 3-folds2022
- Author(s)
  Takuzo Okada
- Organizer
  Rationality, Moduli Spaces, and Related Topics
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23K22389
[Presentation] Birational geometry of sextic double solids with cA points2021
- Author(s)
  Takuzo Okada
- Organizer
  Algebraic Geometry Seminar (Online, IBS-CGP)
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03216
[Presentation] Birational geometry of Fano 3-fold WCIs2021
- Author(s)
  Takuzo Okada
- Organizer
  Fano varieties and Birational Geometry
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03216
[Presentation] Birational geometry of Fano 3-fold weighted complete intersections2021
- Author(s)
  Takuzo Okada
- Organizer
  The 19th Affine Algebraic Geometry Meeting
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03216
[Presentation] 代数多様体の有理性の問題2021
- Author(s)
  岡田拓三
- Organizer
  複素幾何学の諸問題II
- Invited
- Data Source
  KAKENHI-PROJECT-18K03216
[Presentation] Birational geometry of sextic double solids2021
- Author(s)
  Takuzo Okada
- Organizer
  Seminar of Algebraic Geometry in East Asis
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03216
[Presentation] On K-stability of birationally superrigid Fano 3-folds2020
- Author(s)
  岡田拓三
- Organizer
  阪大オンライン代数幾何学セミナー
- Invited
- Data Source
  KAKENHI-PROJECT-18K03216
[Presentation] K-stability of birationally superrigid Fano 3-fold weighted hypersurfaces2020
- Author(s)
  Takuzo Okada
- Organizer
  Zoom Algebraic Geometry Seminar
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03216
[Presentation] On K-stability of birationally superrigid Fano 3-folds2019
- Author(s)
  Takuzo Okada
- Organizer
  Birational Geometry, Kaehler-Einstein metrics and Degenerations (HSE, Moscow, Russia)
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03216
[Presentation] On the degree of irrationality of quartic 3-folds2019
- Author(s)
  Takuzo Okada
- Organizer
  Birational Geometry, Kaehler-Einstein metrics and Degenerations (IBS-CGP, Pohang, Korea)
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03216
[Presentation] Birationally superrigid Fano 3-folds of codimension 42019
- Author(s)
  Takuzo Okada
- Organizer
  Birational Geometry and Fano Varieties (Steklov Math. Inst., Moscow, Russia)
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03216
[Presentation] Birationally superrigid Fano 3-folds of codimension 42019
- Author(s)
  Takuzo Okada
- Organizer
  Algebraic Geometry International Conference (KIAS, Seoul, Korea)
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03216
[Presentation] Birationally superrigid Fano threefolds of codimension 42019
- Author(s)
  Takuzo Okada
- Organizer
  Kinosaki Algebraic Geometry Symposium 2019 (城崎国際アートセンター)
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03216
[Presentation] 3次元4次超曲面の非有理次数について2019
- Author(s)
  岡田拓三
- Organizer
  湯布院代数幾何ワークショップ (日本文理大学湯布院研修所)
- Invited
- Data Source
  KAKENHI-PROJECT-18K03216
[Presentation] Birationally superrigid Fano 3-folds of codimension 42019
- Author(s)
  岡田拓三
- Organizer
  ファノ多様体及び関連する代数幾何学 (九州大学)
- Invited
- Data Source
  KAKENHI-PROJECT-18K03216
[Presentation] Failure of stable rationality of various algebraic varieties via reduction modulo p2018
- Author(s)
  Takuzo Okada
- Organizer
  Birational Geometry and Arithmetic (Brown University, USA)
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03216
[Presentation] On birational rigidity of singular del Pezzo fibrations of degree 12018
- Author(s)
  Takuzo Okada
- Organizer
  Positivity in Algebraic Geometry (Yonsei University, Korea)
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03216
[Presentation] On birational rigidity of singular del Pezzo fibrations of degree 12018
- Author(s)
  Takuzo Okada
- Organizer
  The 16th Affine Algebraic Geometry Meeting
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800019
[Presentation] Birational rigidity of del Pezzo fibrations2018
- Author(s)
  Takuzo Okada
- Organizer
  Explicit Birational and Affine Geometry (Saitama University)
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03216
[Presentation] Failure of stable rationality of various algebraic varieties2018
- Author(s)
  Takuzo Okada
- Organizer
  Algebraic Geometry in East Asia (VAST, Vietnam)
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03216
[Presentation] Stable rationality of conic bundles over projective spaces2017
- Author(s)
  岡田拓三
- Organizer
  農工大数学セミナー2017
- Place of Presentation
  東京農工大学小金井キャンパス
- Invited
- Data Source
  KAKENHI-PROJECT-26800019
[Presentation] On stable rationality of del Pezzo fibrations2017
- Author(s)
  Takuzo Okada
- Organizer
  アフィン代数幾何学研究集会
- Place of Presentation
  関西学院大学大阪梅田キャンパス
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800019
[Presentation] Stable rationality of higher dimensional conic bundles2017
- Author(s)
  岡田拓三
- Organizer
  野田シンポジウム
- Place of Presentation
  東京理科大学野田キャンパス
- Invited
- Data Source
  KAKENHI-PROJECT-26800019
[Presentation] On stable rationality problem of Fano varieties2017
- Author(s)
  Takuzo Okada
- Organizer
  Stability, Boundedness and Fano varieties
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800019
[Presentation] Smooth weighted hypersurfaces that are not stably rational2017
- Author(s)
  Takuzo Okada
- Organizer
  Birkar's boundedness and Cremona groups (Edge days 2017)
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800019
[Presentation] Birationally bi-rigid Fano threefolds of codimension 22016
- Author(s)
  Takuzo Okada
- Organizer
  Heilbronn Focused Research Workshop on Birational Geometry
- Place of Presentation
  University of Warwick, UK
- Year and Date
  2016-02-11
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800019
[Presentation] Stable rationality of orbifold Fano 3-fold hypersurfaces2016
- Author(s)
  Takuzo Okada
- Organizer
  城崎代数幾何学シンポジウム
- Place of Presentation
  城崎国際アートセンター
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800019
[Presentation] Classification of birationally bi-rigid Fano 3-fold weighted complete intersections2016
- Author(s)
  Takuzo Okada
- Organizer
  Higher dimensional algebraic geometry and around, Kobe-Kyoto
- Place of Presentation
  京都大学
- Year and Date
  2016-02-04
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800019
[Presentation] Stable rationality of cyclic covers and some orbifold Fano 3-folds2016
- Author(s)
  Takuzo Okada
- Organizer
  Workshop on birational geometry and reduction to positive characteristic
- Place of Presentation
  University of Edinburgh
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800019
[Presentation] Non-rationality of del Pezzo fibrations by reduction modulo p2016
- Author(s)
  Takuzo Okada
- Organizer
  Linfoot Seminar
- Place of Presentation
  University of Bristol, UK
- Year and Date
  2016-02-17
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800019
[Presentation] Stable rationality of orbifold Fano 3-fold hypersurfaces2016
- Author(s)
  Takuzo Okada
- Organizer
  Rationality and selfmaps
- Place of Presentation
  京都大学数理解析研究所
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800019
[Presentation] Birationally rigid Pfaffian Fano 3-folds2015
- Author(s)
  岡田拓三
- Organizer
  第3回杜の都代数幾何研究集会
- Place of Presentation
  福岡大学セミナーハウス
- Year and Date
  2015-11-26
- Invited
- Data Source
  KAKENHI-PROJECT-26800019
[Presentation] Birational geometry of Fano 3-folds of codimension 2 and 32015
- Author(s)
  Takuzo Okada
- Organizer
  Algebraic Geometry Seminar
- Place of Presentation
  IBS Center for Geometry and Physics, Pohang, Korea
- Year and Date
  2015-09-15
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800019
[Presentation] 3次元ファノ多様体の双有理幾何に着いて2015
- Author(s)
  岡田拓三
- Organizer
  第133回日本数学会九州支部例会（特別講演）
- Place of Presentation
  佐賀大学
- Year and Date
  2015-10-24
- Invited
- Data Source
  KAKENHI-PROJECT-26800019
[Presentation] Nonrational del Pezzo fibrations admitting an action of the Klein simple group2015
- Author(s)
  Takuzo Okada
- Organizer
  Workshop on singular del Pezzo surfaces (Edge days 2015)
- Place of Presentation
  University of Edinburgh, UK
- Year and Date
  2015-06-05
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800019
[Presentation] Birational geometry of Q-Fano 3-fold weighted complete intersections2014
- Author(s)
  Takuzo Okada
- Organizer
  Landau-Ginzburg theory and Fano varieties
- Place of Presentation
  Gyeongyu, Korea
- Year and Date
  2014-05-26
- Invited
- Data Source
  KAKENHI-PROJECT-26800019
[Presentation] 3次元Qファノ重み付き完全交叉の双有理的森ファイバー構造について2014
- Author(s)
  岡田拓三
- Organizer
  第12回代数曲線論シンポジウム
- Place of Presentation
  日本大学理工学部
- Year and Date
  2014-12-20
- Invited
- Data Source
  KAKENHI-PROJECT-26800019
[Presentation] Rationality problem of 3-dimensional weighted complete intersections2013
- Author(s)
  岡田拓三
- Organizer
  代数幾何セミナー
- Place of Presentation
  名古屋大学
- Invited
- Data Source
  KAKENHI-PROJECT-24840034
[Presentation] 3次元重み付き完全交叉の有理性問題について2013
- Author(s)
  岡田拓三
- Organizer
  埼玉大学談話会
- Place of Presentation
  埼玉大学
- Year and Date
  2013-05-31
- Data Source
  KAKENHI-PROJECT-24840034
[Presentation] On birationally tririgid Q-Fano threefolds2013
- Author(s)
  岡田拓三
- Organizer
  代数幾何学セミナー
- Place of Presentation
  東京大学
- Year and Date
  2013-12-09
- Data Source
  KAKENHI-PROJECT-24840034
[Presentation] 重み付き完全交叉の有理性問題について2013
- Author(s)
  岡田拓三
- Organizer
  特異点論月曜セミナー
- Place of Presentation
  日本大学
- Year and Date
  2013-02-19
- Data Source
  KAKENHI-PROJECT-24840034
[Presentation] On birationlly tririgid Q-Fano threefolds2013
- Author(s)
  岡田拓三
- Organizer
  射影多様体の幾何とその周辺2013
- Place of Presentation
  高知大学
- Year and Date
  2013-11-04
- Data Source
  KAKENHI-PROJECT-24840034
[Presentation] Introduction to rationality problem of quartic (and cubic) 3-folds2013
- Author(s)
  Takuzo Okada
- Organizer
  Workshop in Algebraic Geometry in Sapporo
- Place of Presentation
  北海道大学
- Year and Date
  2013-08-28
- Data Source
  KAKENHI-PROJECT-24840034
[Presentation] On birationally tririgid Q-Fano threefolds2013
- Author(s)
  Takuzo Okada
- Organizer
  第12回アフィン代数幾何学研究集会
- Place of Presentation
  関西学院大学大阪梅田キャンパス
- Year and Date
  2013-09-05
- Data Source
  KAKENHI-PROJECT-24840034
[Presentation] On birationally tririgid Q-Fano threefolds2013
- Author(s)
  岡田拓三
- Organizer
  Fano多様体の最近の進展
- Place of Presentation
  京都大学数理解析研究所
- Year and Date
  2013-12-16
- Data Source
  KAKENHI-PROJECT-24840034
[Presentation] On birationally tririgid Q-Fano threefolds2013
- Author(s)
  岡田拓三
- Organizer
  射影多様体の幾何とその周辺2013
- Place of Presentation
  高知大学
- Invited
- Data Source
  KAKENHI-PROJECT-24840034
[Presentation] Rationality problem of 3-dimensional weighted complete intersections2013
- Author(s)
  岡田拓三
- Organizer
  代数幾何学セミナー
- Place of Presentation
  名古屋大学
- Year and Date
  2013-04-17
- Data Source
  KAKENHI-PROJECT-24840034
[Presentation] Birational unboundedness of Q-Fano varieties of dimension at least five2010
- Author(s)
  岡田拓三
- Organizer
  アフィン代数幾何学研究集会
- Place of Presentation
  関西学院大学大阪梅田キャンパス
- Year and Date
  2010-03-04
- Data Source
  KAKENHI-PROJECT-21840032
[Presentation] Birational unboundedness of Q-Fano varieties2010
- Author(s)
  岡田拓三
- Organizer
  School (and workshop) on the minimal model program and Shokurov's ACC conjecture
- Place of Presentation
  University of Trento(イタリア)
- Year and Date
  2010-07-09
- Data Source
  KAKENHI-PROJECT-21840032
[Presentation] Qファノ多様体の双有理的非有界性2010
- Author(s)
  岡田拓三
- Organizer
  早大理工代数幾何学セミナー
- Place of Presentation
  早稲田大学
- Year and Date
  2010-05-21
- Data Source
  KAKENHI-PROJECT-21840032
[Presentation] Birational unboundedness of Q-Fano varieties of dimension at least five2010
- Author(s)
  岡田拓三
- Organizer
  代数幾何小研究集会
- Place of Presentation
  埼玉大学
- Year and Date
  2010-03-02
- Data Source
  KAKENHI-PROJECT-21840032
[Presentation] On the rationality problem of Q-Fano weighted hypersurfaces of dimension three2010
- Author(s)
  岡田拓三
- Organizer
  代数幾何学セミナー
- Place of Presentation
  北海道大学
- Year and Date
  2010-01-25
- Data Source
  KAKENHI-PROJECT-21840032
[Presentation] Qファノ多様体の双有理的非有界性2010
- Author(s)
  岡田拓三
- Organizer
  複素幾何セミナー
- Place of Presentation
  首都大学東京
- Year and Date
  2010-05-26
- Data Source
  KAKENHI-PROJECT-21840032
[Presentation] Birational unboundedness of Q-Fano varieties of dimension at least five2010
- Author(s)
  岡田拓三
- Organizer
  代数幾何学小研究集会
- Place of Presentation
  埼玉大学
- Year and Date
  2010-03-02
- Data Source
  KAKENHI-PROJECT-21840032
[Presentation] Qファノ多様体の双有理的非有界性2010
- Author(s)
  岡田拓三
- Organizer
  複素幾何セミナー
- Place of Presentation
  首都大学東京(招待講演)
- Year and Date
  2010-05-26
- Data Source
  KAKENHI-PROJECT-21840032
[Presentation] Qファノ多様体の双有理的非有界性2010
- Author(s)
  岡田拓三
- Organizer
  早大理工代数幾何学セミナー
- Place of Presentation
  早稲田大学(招待講演)
- Year and Date
  2010-05-21
- Data Source
  KAKENHI-PROJECT-21840032
[Presentation] Birational unboundedness of rationally connected Mori fiber spaces2010
- Author(s)
  岡田拓三
- Organizer
  都の西北代数幾何学シンポジウム
- Place of Presentation
  早稲田大学(招待講演)
- Year and Date
  2010-11-12
- Data Source
  KAKENHI-PROJECT-21840032
[Presentation] Birational unboundedness of rationally connected Mori fiber spaces2010
- Author(s)
  岡田拓三
- Organizer
  都の西北代数幾何学シンポジウム
- Place of Presentation
  早稲田大学
- Year and Date
  2010-11-12
- Data Source
  KAKENHI-PROJECT-21840032
[Presentation] Birational unboundedness of Q-Fano varieties of dimension at least five2009
- Author(s)
  岡田拓三
- Organizer
  高次元代数幾何の周辺
- Place of Presentation
  数理解析研究所
- Year and Date
  2009-12-18
- Data Source
  KAKENHI-PROJECT-21840032

1. MIYAZAKI Chikashi (90229831)

# of Collaborated Projects: 3 results

# of Collaborated Products: 0 results
2. TERAI Naoki (90259862)

# of Collaborated Projects: 3 results

# of Collaborated Products: 0 results
3. ICHIKAWA Takashi (20201923)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
4. NOMA Atsushi (90262401)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
5. AMASAKI Mutsumi (10243536)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
6. OGATA Shoetsu (90177113)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
7. YOSHIDA KENICHI (80240802)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
8. YANAGAWA KOUJI (40283006)

# of Collaborated Projects: 1 results

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9. KIMURA KYOUKO (60572633)

# of Collaborated Projects: 1 results

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10. 庄田敏宏 (10432957)

# of Collaborated Projects: 1 results

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11. 青山崇洋 (60516178)

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12. 星明考 (50434262)

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13. 山崎愛一 (10283590)

# of Collaborated Projects: 1 results

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14. 木田雅成 (20272057)

# of Collaborated Projects: 1 results

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15. 安田健彦 (30507166)

# of Collaborated Projects: 1 results

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16. 山木壱彦 (80402973)

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17. 下元数馬 (70588780)

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18. 小島秀雄 (90332824)

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19. 橋詰健太 (40934211)

# of Collaborated Projects: 1 results

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Okada Takuzo 岡田 拓三

OKADA Takuzo 岡田 拓三

Research Projects

Research Products

Co-Researchers

Number theory and algebraic geometry and computer mathematics - New developments on rationality problems for algebraic varieties -

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Birational geometry of Fano varietiesPrincipal Investigator

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Rationality problem of algebraic varieties and related topicsPrincipal Investigator

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Castelnuovo-Mumford regularity and syzygies for projective varieties and its related topics

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Arithmetical rank of Stanley-Reisner ideals and projective dimension of their powers

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Birational Mori fiber structures of Fano varieties and rationality problemPrincipal Investigator

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Explicit study of rationality of Q-Fano varieties and its related topicsPrincipal Investigator

Principal Investigator

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Castelnuovo-Mumford regularity for projective variety and its related topics

Principal Investigator

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Birational geometry of nonrational rationally connected varietiesPrincipal Investigator

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[Journal Article] Stable rationality of index one Fano hypersurfaces containing a linear space2022

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[Journal Article] Smooth weighted hypersurfaces that are not stably rational2021

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[Journal Article] Alpha invariants of birationally bi-rigid Fano 3-folds I2021

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[Journal Article] Birational Mori fiber structures of Q-Fano 3-fold weighted complete intersections, III2020

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[Journal Article] Birationally superrigid Fano 3-folds of codimension 42020

Okada Takuzo 岡田拓三

OKADA Takuzo 岡田拓三