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Generation problems in module categories and derived categories of commutative noetherian rings

Research Project

Project/Area Number 19K03443
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 11010:Algebra-related
Research InstitutionNagoya University

Principal Investigator

Takahashi Ryo  名古屋大学, 多元数理科学研究科, 教授 (40447719)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords可換環 / thick部分圏 / 三角圏 / 導来圏 / 特異圏 / 加群圏 / 分解部分圏 / 支配的局所環 / Frobenius写像 / エントロピー / CM優秀 / Faltingsの零化域定理 / t構造 / 正準加群 / n捩れ自由 / ネーター環 / Serre部分圏 / 可換ネーター環 / 反変有限部分圏 / アーベル圏 / 節減次元 / 部分圏 / 素イデアルスペクトラム / Rouquier次元
Outline of Research at the Start

与えられた圏の(充満)部分圏の分類およびそれらの(Rouquier)次元の評価は、複数の分野にまたがり非常に多くの研究者が取り組んできた重要な研究テーマである。本研究は、可換Noether環上の有限生成加群全体のなすAbel圏およびそれの各種の導来圏に対してそれを考察することを目的とする。一つの対象から短完全列あるいは完全三角を何回か取ることでどれだけの対象が得られるか?という「生成問題」が、分類および次元評価の研究の双方の根幹部分になっている。本研究では、さまざまなアプローチを用いてこの生成問題に取り組む。

Outline of Final Research Achievements

I introduced a new class of commutative noetherian local rings which are called dominant local rings. I investigated basic properties of dominant local rings, and compare them with other classes of commutative noetherian local rings. Also, I gave various methods to get another one from a given dominant local ring. Moreover, under certain assumptions on the dominance of localizations, I classified suitable resolving subcategories of finitely generated modules, suitable thick subcategories of the bounded derived category of finitely generated modules, and the whole thick subcategories of the singularity category. This classification theorem recovers all the existing classification theorems in the same context.

Academic Significance and Societal Importance of the Research Achievements

表現論は数学全体に跨っている分野ですが、私は(可換)環の表現論を中心に研究してきました。この分野の主題は、与えられた環の外部表現(加群や複体)全体のなす構造を明らかにすることであり、環に付随する各種のアーベル圏や三角圏の適切な充満部分圏の分類を行うことは、そのための重要なアプローチの一つになっています。本研究で得られた部分圏の分類定理は、環の表現論の進展に寄与するものであると言えます。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (99 results)

All 2023 2022 2021 2020 2019 2018 Other

All Int'l Joint Research (8 results) Journal Article (51 results) (of which Int'l Joint Research: 29 results,  Peer Reviewed: 51 results,  Open Access: 4 results) Presentation (38 results) (of which Int'l Joint Research: 11 results,  Invited: 26 results) Book (1 results) Remarks (1 results)

  • [Int'l Joint Research] Indian Institute of Technology Palakkad(インド)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] University of Kansas(米国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] University of Leeds(英国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Indian Institute of Technology Hyderabad(インド)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] University of Kansas(米国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] University of Texas at Arlington/University of Kansas(米国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] University of Verona(イタリア)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] VIASM(ベトナム)

    • Related Report
      2019 Research-status Report
  • [Journal Article] On the subcategory of n-torsionfree modules and related modules2023

    • Author(s)
      Souvik Dey; Ryo Takahashi
    • Journal Title

      Collectanea Mathematica

      Volume: 74 Issue: 1 Pages: 113-132

    • DOI

      10.1007/s13348-021-00338-1

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Dominant local rings and subcategory classification2023

    • Author(s)
      Ryo Takahashi
    • Journal Title

      International Mathematics Research Notices. IMRN

      Volume: - Issue: 9 Pages: 7259-7318

    • DOI

      10.1093/imrn/rnac053

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] On the categorical entropy of the Frobenius pushforward functor2023

    • Author(s)
      Hiroki Matsui; Ryo Takahashi
    • Journal Title

      Bulletin of the London Mathematical Society

      Volume: - Issue: 3 Pages: 1358-1372

    • DOI

      10.1112/blms.12796

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Auslander-Reiten conjecture and finite injective dimension of Hom2023

    • Author(s)
      Dipankar Ghosh; Ryo Takahashi
    • Journal Title

      Kyoto Journal of Mathematics

      Volume: -

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Solid generators in module categories and applications2023

    • Author(s)
      Ryo Takahashi
    • Journal Title

      Rendiconti del Seminario Matematico della Universita di Padova

      Volume: -

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Remarks on complexities and entropies for singularity categories2023

    • Author(s)
      Ryo Takahashi
    • Journal Title

      Comptes Rendus Mathematique. Academie des Sciences. Paris

      Volume: -

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Faltings' annihilator theorem and t-structures of derived categories2023

    • Author(s)
      Ryo Takahashi
    • Journal Title

      Mathematische Zeitschrift

      Volume: -

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spanier-Whitehead categories of resolving subcategories and comparison with singularity categories2022

    • Author(s)
      Abdolnaser Bahlekeh; Shokrollah Salarian; Ryo Takahashi; Zahra Toosi
    • Journal Title

      Algebras and Representation Theory

      Volume: 25 Issue: 3 Pages: 595-613

    • DOI

      10.1007/s10468-021-10037-x

    • Related Report
      2022 Annual Research Report 2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Maximal Cohen-Macaulay tensor products and vanishing of Ext modules2022

    • Author(s)
      Kaito Kimura; Yuya Otake; Ryo Takahashi
    • Journal Title

      Bulletin of the London Mathematical Society

      Volume: 54 Issue: 6 Pages: 2456-2468

    • DOI

      10.1112/blms.12705

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On reducing homological dimensions over noetherian rings2022

    • Author(s)
      Tokuji Araya; Ryo Takahashi
    • Journal Title

      Proceedings of the American Mathematical Society

      Volume: 150

    • DOI

      10.1090/proc/15785

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Filtrations in module categories, derived categories and prime spectra2022

    • Author(s)
      Hiroki Matsui; Ryo Takahashi
    • Journal Title

      International Mathematics Research Notices. IMRN

      Volume: 2022 Issue: 5 Pages: 3457-3492

    • DOI

      10.1093/imrn/rnaa284

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Comparisons between annihilators of Tor and Ext2022

    • Author(s)
      Souvik Dey, Ryo Takahashi
    • Journal Title

      Acta Mathematica Vietnamica

      Volume: 0 Issue: 1 Pages: 0-0

    • DOI

      10.1007/s40306-021-00443-0

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Powers of the maximal ideal and vanishing of (co)homology2021

    • Author(s)
      Olgur Celikbas; Ryo Takahashi
    • Journal Title

      Glasgow Mathematical Journal

      Volume: 63 Issue: 1 Pages: 1-5

    • DOI

      10.1017/s0017089519000466

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Trace ideals of canonical modules, annihilators of Ext modules, and classes of rings close to being Gorenstein2021

    • Author(s)
      Dao Hailong、Kobayashi Toshinori、Takahashi Ryo
    • Journal Title

      Journal of Pure and Applied Algebra

      Volume: 225 Issue: 9 Pages: 106655-106655

    • DOI

      10.1016/j.jpaa.2020.106655

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Cohomological dimensions of specialization-closed subsets and subcategories of modules2021

    • Author(s)
      Hiroki Matsui; Tran Tuan Nam; Ryo Takahashi; Nguyen Minh Tri; Do Ngoc Yen
    • Journal Title

      Proceedings of the American Mathematical Society

      Volume: 149 Issue: 2 Pages: 481-496

    • DOI

      10.1090/proc/15102

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Resolving subcategories closed under certain operations and a conjecture of Dao and Takahashi2021

    • Author(s)
      Arash Sadeghi; Ryo Takahashi
    • Journal Title

      Michigan Mathematical Journal

      Volume: 70 Issue: 2

    • DOI

      10.1307/mmj/1592359276

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Some criteria for detecting large homomorphisms of local rings2021

    • Author(s)
      Mohsen Gheibi; Ryo Takahashi
    • Journal Title

      Communications in Algebra

      Volume: 49 Issue: 8 Pages: 3490-3500

    • DOI

      10.1080/00927872.2021.1899194

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Resolving subcategories whose finitely presented module categories are abelian2021

    • Author(s)
      Ryo Takahashi
    • Journal Title

      Comptes Rendus Mathematique. Academie des Sciences. Paris

      Volume: 359 Issue: 5 Pages: 577-592

    • DOI

      10.5802/crmath.197

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Quasi-projective dimension2021

    • Author(s)
      David A. Jorgensen; Mohsen Gheibi; Ryo Takahashi
    • Journal Title

      Pacific Journal of Mathematics

      Volume: 312 Issue: 1 Pages: 113-147

    • DOI

      10.2140/pjm.2021.312.113

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Grothendieck groups, convex cones and maximal Cohen-Macaulay points2021

    • Author(s)
      Ryo Takahashi
    • Journal Title

      Mathematische Zeitschrift

      Volume: 299 Issue: 1-2 Pages: 53-82

    • DOI

      10.1007/s00209-020-02685-4

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Classification of dominant resolving subcategories by moderate functions2021

    • Author(s)
      Ryo Takahashi
    • Journal Title

      Illinois Journal of Mathematics

      Volume: 65 Issue: 3

    • DOI

      10.1215/00192082-9330146

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Intersections of resolving subcategories and intersections of thick subcategories2021

    • Author(s)
      Ryo Takahashi
    • Journal Title

      European Journal of Mathematics

      Volume: 7 Issue: 4 Pages: 1767-1790

    • DOI

      10.1007/s40879-021-00470-z

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Resolving subcategories whose finitely presented module categories are abelian2021

    • Author(s)
      Ryo Takahashi
    • Journal Title

      Comptes Rendus Math?matique. Acad?mie des Sciences. Paris

      Volume: 0 Pages: 0-0

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] The Jacobian ideal of a commutative ring and annihilators of cohomology2020

    • Author(s)
      Srikanth B. Iyengar; Ryo Takahashi
    • Journal Title

      Journal of Algebra

      Volume: 0 Pages: 0-0

    • DOI

      10.1016/j.jalgebra.2018.07.034

    • Related Report
      2021 Research-status Report 2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Homogeneous prime elements in normal two-dimensional graded rings2020

    • Author(s)
      Anurag Singh; Ryo Takahashi; Kei-ichi Watanabe
    • Journal Title

      Journal of Algebra

      Volume: 0 Pages: 0-0

    • DOI

      10.1016/j.jalgebra.2018.07.012

    • Related Report
      2021 Research-status Report 2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] On the radius of the category of extensions of matrix factorizations2020

    • Author(s)
      Kaori Shimada; Ryo Takahashi
    • Journal Title

      Journal of Algebra

      Volume: 546 Pages: 566-579

    • DOI

      10.1016/j.jalgebra.2019.10.054

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Maximal Cohen-Macaulay modules that are not locally free on the punctured spectrum2020

    • Author(s)
      Toshinori Kobayashi; Justin Lyle; Ryo Takahashi
    • Journal Title

      Journal of Pure and Applied Algebra

      Volume: 224 Issue: 7 Pages: 106311-106311

    • DOI

      10.1016/j.jpaa.2020.106311

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Local rings with quasi-decomposable maximal ideal2020

    • Author(s)
      Saeed Nasseh; Ryo Takahashi
    • Journal Title

      Mathematical Proceedings of the Cambridge Philosophical Society

      Volume: 168 Issue: 2 Pages: 305-322

    • DOI

      10.1017/s0305004118000695

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A topology on the set of isomorphism classes of maximal Cohen--Macaulay modules2020

    • Author(s)
      Hiramatsu Naoya、Takahashi Ryo
    • Journal Title

      Proceedings of the American Mathematical Society

      Volume: 148 Issue: 6 Pages: 2359-2369

    • DOI

      10.1090/proc/14965

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Little dimension and the improved new intersection theorem2020

    • Author(s)
      Tsutomu Nakamura; Ryo Takahashi; Siamak Yassemi
    • Journal Title

      Mathematica Scandinavica

      Volume: 126 Issue: 2 Pages: 209-220

    • DOI

      10.7146/math.scand.a-119740

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Gorenstein modifications and Q-Gorenstein rings2020

    • Author(s)
      H. Dao, O. Iyama, R. Takahashi, M. Wemyss
    • Journal Title

      J. Algebraic Geom.

      Volume: - Issue: 4 Pages: 729-751

    • DOI

      10.1090/jag/760

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Construction of spectra of triangulated categories and applications to commutative rings2020

    • Author(s)
      Hiroki Matsui; Ryo Takahashi
    • Journal Title

      Journal of the Mathematical Society of Japan

      Volume: 72 Issue: 4 Pages: 1283-1307

    • DOI

      10.2969/jmsj/82868286

    • NAID

      130007928966

    • ISSN
      0025-5645, 1881-1167, 1881-2333
    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Burch ideals and Burch rings2020

    • Author(s)
      Hailong Dao; Toshinori Kobayashi; Ryo Takahashi
    • Journal Title

      Algebra and Number Theory

      Volume: 14 Issue: 8 Pages: 2121-2150

    • DOI

      10.2140/ant.2020.14.2121

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Flat ring epimorphisms and universal localizations of commutative rings2020

    • Author(s)
      Lidia Angeleri Hogel; Frederik Marks; Jan Stovicek; Ryo Takahashi; Jorge Vitoria
    • Journal Title

      The Quarterly Journal of Mathematics

      Volume: 71 Issue: 4 Pages: 1489-1520

    • DOI

      10.1093/qmath/haaa041

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Powers of the maximal ideal and vanishing of (co)homology2020

    • Author(s)
      Olgur Celikbas; Ryo Takahashi
    • Journal Title

      Glasgow Mathematical Journal

      Volume: -

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Resolving subcategories closed under certain operations and a conjecture of Dao and Takahashi2020

    • Author(s)
      Arash Sadeghi; Ryo Takahashi
    • Journal Title

      Michigan Mathematical Journal

      Volume: -

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Cohomological dimensions of specialization-closed subsets and subcategories of modules2020

    • Author(s)
      Hiroki Matsui; Tran Tuan Nam; Ryo Takahashi; Nguyen Minh Tri; Do Ngoc Yen
    • Journal Title

      Proceedings of the American Mathematical Society

      Volume: -

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Applications and homological properties of local rings with decomposable maximal ideals2019

    • Author(s)
      Nasseh Saeed, Sather-Wagstaff Sean, Takahashi Ryo, VandeBogert Keller
    • Journal Title

      Journal of Pure and Applied Algebra

      Volume: 223 Issue: 3 Pages: 1272-1287

    • DOI

      10.1016/j.jpaa.2018.06.006

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Totally reflexive modules and Poincare series2019

    • Author(s)
      Gheibi Mohsen, Takahashi Ryo
    • Journal Title

      Journal of Algebra

      Volume: 520 Pages: 440-459

    • DOI

      10.1016/j.jalgebra.2018.10.040

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Remarks on dimensions of triangulated categories2019

    • Author(s)
      Aihara Takuma, Takahashi Ryo
    • Journal Title

      Journal of Algebra

      Volume: 521 Pages: 235-246

    • DOI

      10.1016/j.jalgebra.2018.12.001

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Degenerations over (A∞)-singularities and construction of degenerations over commutative rings2019

    • Author(s)
      Hiramatsu Naoya、Takahashi Ryo、Yoshino Yuji
    • Journal Title

      Journal of Algebra

      Volume: 525 Pages: 374-389

    • DOI

      10.1016/j.jalgebra.2018.12.031

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] On the transitivity of degeneration of modules2019

    • Author(s)
      Ryo Takahashi
    • Journal Title

      Manuscripta Mathematica

      Volume: 159 Issue: 3-4 Pages: 431-444

    • DOI

      10.1007/s00229-018-1076-2

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] On the second rigidity theorem of Huneke and Wiegand2019

    • Author(s)
      Olgur Celikbas; Ryo Takahashi
    • Journal Title

      Proceedings of the American Mathematical Society

      Volume: 147 Issue: 7 Pages: 2733-2739

    • DOI

      10.1090/proc/14564

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] On the Ideal Case of a Conjecture of Huneke and Wiegand2019

    • Author(s)
      Celikbas Olgur、Goto Shiro、Takahashi Ryo、Taniguchi Naoki
    • Journal Title

      Proceedings of the Edinburgh Mathematical Society

      Volume: 62 Issue: 3 Pages: 847-859

    • DOI

      10.1017/s0013091518000731

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Ulrich modules over Cohen-Macaulay local rings with minimal multiplicity2019

    • Author(s)
      Toshinori Kobayashi; Ryo Takahashi
    • Journal Title

      The Quarterly Journal of Mathematics

      Volume: 70 Issue: 2 Pages: 487-507

    • DOI

      10.1093/qmath/hay055

    • NAID

      120006765139

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Two generalizations of Auslander-Reiten duality and applications2019

    • Author(s)
      Arash Sadeghi; Ryo Takahashi
    • Journal Title

      Illinois Journal of Mathematics

      Volume: 63 Issue: 2

    • DOI

      10.1215/00192082-7768744

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Associated primes and syzygies of linked modules2019

    • Author(s)
      Olgur Celikbas; Mohammad T. Dibaei; Mohsen Gheibi; Arash Sadeghi; Ryo Takahashi
    • Journal Title

      Journal of Commutative Algebra

      Volume: 11 Issue: 3

    • DOI

      10.1216/jca-2019-11-3-301

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Rings whose ideals are isomorphic to trace ideals2019

    • Author(s)
      Toshinori Kobayashi; Ryo Takahashi
    • Journal Title

      Mathematische Nachrichten

      Volume: 292 Issue: 10 Pages: 2252-2261

    • DOI

      10.1002/mana.201800309

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Generation in singularity categories of hypersurfaces of countable representation type2019

    • Author(s)
      Tokuji Araya; Kei-ichiro Iima; Maiko Ono; Ryo Takahashi
    • Journal Title

      Archiv der Mathematik (Basel)

      Volume: 113 Issue: 6 Pages: 603-615

    • DOI

      10.1007/s00013-019-01374-x

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Noncommutative resolutions using syzygies2018

    • Author(s)
      Dao Hailong、Iyama Osamu、Iyengar Srikanth B.、Takahashi Ryo、Wemyss Michael、Yoshino Yuji
    • Journal Title

      Bulletin of the London Mathematical Society

      Volume: 51 Issue: 1 Pages: 43-48

    • DOI

      10.1112/blms.12210

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Openness of the Regular Locus and Generators for Module Categories2018

    • Author(s)
      Iyengar Srikanth B.、Takahashi Ryo
    • Journal Title

      Acta Mathematica Vietnamica

      Volume: 44 Issue: 1 Pages: 207-212

    • DOI

      10.1007/s40306-018-0294-8

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Faltings' annihilator theorem for complexes over CM-excellent rings2023

    • Author(s)
      Ryo Takahashi
    • Organizer
      The 11th Japan-Vietnam Joint Seminar on Commutative Algebra - by and for young mathematicians -
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Faltingsの零化域定理の拡張とその応用2023

    • Author(s)
      高橋 亮
    • Organizer
      名古屋大学可換環論セミナー
    • Related Report
      2022 Annual Research Report
  • [Presentation] 剰余体のシジジーとタイプ1の局所環2022

    • Author(s)
      高橋 亮
    • Organizer
      第33回可換環論セミナー
    • Related Report
      2022 Annual Research Report
  • [Presentation] When is a subcategory Serre or torsionfree?2022

    • Author(s)
      飯間 圭一郎; 松井 紘樹; 嶋田 芳; 高橋 亮
    • Organizer
      第33回可換環論セミナー
    • Related Report
      2022 Annual Research Report
  • [Presentation] Dimitrov-Haiden-Katzarkov-Kontsevich complexities for singularity categories2022

    • Author(s)
      高橋 亮
    • Organizer
      第54回環論および表現論シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] Dimitrov-Haiden-Katzarkov-Kontsevich complexities for singularity categories2022

    • Author(s)
      Ryo Takahashi
    • Organizer
      第43回可換環論シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 加群圏のthick部分圏の生成系2022

    • Author(s)
      高橋 亮
    • Organizer
      可換環論の新しい融合セミナー
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 特異圏上のDimitrov--Haiden--Katzarkov--Kontsevich関数について2022

    • Author(s)
      高橋 亮
    • Organizer
      第27回岡山可換代数表現セミナー(OSCAR27)
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Cohen-Macaulay環上のAuslander-Reiten予想2022

    • Author(s)
      木村 海渡; 大竹 優也; 高橋 亮
    • Organizer
      日本数学会代数学分科会
    • Related Report
      2021 Research-status Report
  • [Presentation] 支配的局所環について2021

    • Author(s)
      高橋 亮
    • Organizer
      第23回岡山可換代数表現セミナー(OSCAR23)
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 支配的局所環についてPart II2021

    • Author(s)
      高橋 亮
    • Organizer
      第23回岡山可換代数表現セミナー(OSCAR23)
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 支配的局所環についてPart III~具体例の構成~2021

    • Author(s)
      高橋 亮
    • Organizer
      第26回岡山可換代数表現セミナー(OSCAR26)
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 分解部分圏の有限表示加群圏のアーベル性について2021

    • Author(s)
      高橋 亮
    • Organizer
      オンライン可換環論セミナー2021
    • Related Report
      2021 Research-status Report
  • [Presentation] Cohen-Macaulay環上のExt加群の消滅 (Vanishing of Ext modules over Cohen-Macaulay rings)2021

    • Author(s)
      大竹 優也; 木村 海渡; 高橋 亮
    • Organizer
      第53回環論および表現論シンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] 支配的局所環と部分圏分類2021

    • Author(s)
      高橋 亮
    • Organizer
      第42回可換環論シンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] Cohen-Macaulay環に対するAuslander-Reiten予想2021

    • Author(s)
      木村 海渡; 大竹 優也; 高橋 亮
    • Organizer
      第42回可換環論シンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] Subcategories of module/derived categories and subsets of Zariski spectra2021

    • Author(s)
      Hiroki Matsui; Ryo Takahashi
    • Organizer
      AMS Spring Eastern Sectional Meeting (formerly at Brown University), Special Session on Commutative Algebra, Virtual
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 可換環の加群圏の分解部分圏2021

    • Author(s)
      高橋 亮
    • Organizer
      名古屋大学多元数理科学研究科談話会, Zoom
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Quasi-Projective Dimension2020

    • Author(s)
      Mohsen Gheibi; David A. Jorgensen; Ryo Takahashi
    • Organizer
      A Zoom Special Session on DG Methods in Commutative Algebra and Representation Theory (AMS Fresno replacement)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 可換環の加群圏と導来圏における生成問題2020

    • Author(s)
      高橋 亮
    • Organizer
      2020年度(第23回)日本数学会代数学賞受賞特別講演, 日本数学会秋季総合分科会, オンライン開催
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 加群圏の分解核とTor/Extの消滅の自明性2020

    • Author(s)
      高橋 亮
    • Organizer
      可換環論オンラインワークショップ, Zoom
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Getting a module from another and classifying resolving subcategories2020

    • Author(s)
      Ryo Takahashi
    • Organizer
      IIT Bombay Virtual Commutative Algebra seminars, Google Meet
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Building modules by direct summands, extensions and syzygies2020

    • Author(s)
      高橋 亮
    • Organizer
      OCAMI代数セミナー, Zoom
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 因子類群の中のMCM点について2020

    • Author(s)
      高橋 亮
    • Organizer
      霧島可換環論セミナー, 国分パークプラザ
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 階数1の極大Cohen-Macaulay加群の個数の有限性について2020

    • Author(s)
      高橋 亮
    • Organizer
      第21回岡山可換代数表現セミナー (OSCAR)&吉野雄二先生退職記念集会, 岡山大学
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Zariski spectra of commutative rings and Balmer spectra of tensor triangulated categories2019

    • Author(s)
      Ryo Takahashi
    • Organizer
      Unversita di Verona, Verona, Italy
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 可換環の表現論への誘い2019

    • Author(s)
      高橋 亮
    • Organizer
      数理科学特別講義C,G, 大阪府立大学
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Generalizations of Ulrich modules and rigidity theorems2019

    • Author(s)
      Olgur Celikbas; Justin Lyle; Ryo Takahashi; Yongwei Yao
    • Organizer
      AMS Fall Central Sectional Meeting, Special Session on Homological and Characteristic p>0 Methods in Commutative Algebra, University of Wisconsin-Madison, Madison, WI, USA
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Quasi-projective dimension2019

    • Author(s)
      Mohsen Gheibi; David A. Jorgensen; Ryo Takahashi
    • Organizer
      AMS Fall Southeastern Sectional Meeting, Special Session on Homological Methods in Algebra, University of Florida, Gainesville, FL, USA
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] On the second rigidity theorem of Huneke and Wiegand2019

    • Author(s)
      Olgur Celikbas; Ryo Takahashi
    • Organizer
      AMS Fall Southeastern Sectional Meeting, Special Session on Homological Methods in Algebra, University of Florida, Gainesville, FL, USA
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Local cohomology and coherent subsets2019

    • Author(s)
      Ryo Takahashi
    • Organizer
      Weakly Seminar on Commutative Algebra, VIASM, Hanoi, Vietnam
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] A spectrum of a triangulated category that is not necessarily tensor-triangulated2019

    • Author(s)
      Ryo Takahashi
    • Organizer
      MALGA, University of Verona
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Cohen-Macaulay rings of finite CM+ representation type2019

    • Author(s)
      Ryo Takahashi
    • Organizer
      Algebra Seminar, University of Texas at Arlington, Arlington, TX, USA
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 階数1の極大Cohen-Macaulay加群の張る錐について2019

    • Author(s)
      高橋 亮
    • Organizer
      東京可換環論セミナー, 東京大学
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Cones spanned by maximal Cohen-Macaulay modules of rank one2019

    • Author(s)
      Ryo Takahashi
    • Organizer
      名古屋大学環論表現論セミナー, 名古屋大学
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Resolving subcategories and totally reflexive modules (分解部分圏と全反射加群)2019

    • Author(s)
      高橋 亮
    • Organizer
      第25回静岡代数学セミナー&星野光男氏追悼研究集会, 静岡大学
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 有限CM+表現型のCohen-Macaulay局所環2019

    • Author(s)
      高橋 亮
    • Organizer
      第32回可換環論セミナー, 弘前大学
    • Related Report
      2019 Research-status Report
  • [Presentation] Modules of finite projective quasi-dimension2019

    • Author(s)
      高橋 亮
    • Organizer
      第41回可換環論シンポジウム, 倉敷シーサイドホテル
    • Related Report
      2019 Research-status Report
  • [Book] Commutative Algebra, Expository Papers Dedicated to David Eisenbud on the Occasion of his 75th Birthday2021

    • Author(s)
      Irena Peeva
    • Publisher
      Springer
    • ISBN
      9783030896935
    • Related Report
      2021 Research-status Report
  • [Remarks] Ryo Takahashi

    • URL

      https://www.math.nagoya-u.ac.jp/~takahashi/

    • Related Report
      2022 Annual Research Report 2020 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2024-01-30  

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