SK - Talks

Shinya Kumashiro

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Talks

    2023

  1. Graded filtrations and ideals of reduction number two
    Mini workshop on commutative algebra (Thai Nguyen, Vietnam), 21 September
  2. Rings having a finite number of trace ideals
    The 28th National School on Algebra (Bucharest, Romania), 24-28 June
  3. Study on Z_2 graded rings
    Workshop The 11th Japan-Vietnam Joint seminar on Commutative Algebra, by and for young mathematicians (Hanoi, Vietnam), 28-30 March

    2022

  4. 正準加群のトレースのcolengthの上限
    日本数学会2022年度秋季総合分科会 (Hokkaido, Japan), 13-16 September
  5. Certain monomial ideals whose numbers of generators of powers descend
    第3回情報数理セミナー (Ibaraki, Japan), 17-19 August
  6. 次数付フィルトレーションと節減数2のイデアル
    日本数学会2022年度年会 (online), 28 March
  7. When are trace ideals finite?
    第2回情報数理セミナー (Tochigi, Japan), 5-7 March
  8. Graded Bourbaki ideals of graded modules and Ideals of reduction number two (slide)
    Virtual Commutative Algebra Seminars (online), 28 January

    2021

  9. Graded filtrations and ideals of reduction number two (slide)
    第42回可換環論シンポジウム (online), 20-23 November
  10. Graded filtrations and ideals of reduction number two
    第1回情報数理セミナー (Tochigi, Japan), 23-24 October
  11. Graded Bourbaki ideals of graded modules (slide)
    オンライン可換環論セミナー2021 (online), 26-27 June and 10-11 July
  12. 節減数２のイデアルのHilbert関数挙動
    日本数学会2021年度年会 (online), 15-18 March
  13. 節減数２のイデアルのHilbert関数挙動
    The 17th Mathematics Conference for Young Researchers (online), 2-5 March

    2020

  14. Ideals of reduction number two (slide)
    可換環論オンラインワークショップ (online), 21-23 November
  15. The Auslander-Reiten conjecture for certain non-Gorenstein Cohen-Macaulay rings (slide)
    2020 AMS Fall Virtual Sectional Meetings, Special Session on Homological Methods in Algebra (online), 3-4 October
  16. The Auslander-Reiten conjecture for certain non-Gorenstein Cohen-Macaulay rings (research talk) (slide)
    WVU Algebra Seminar via Zoom (online), 12 September
  17. The Auslander-Reiten conjecture for certain non-Gorenstein Cohen-Macaulay rings (introductory talk) (slide)
    WVU Algebra Seminar via Zoom (online), 5 September
  18. Graded Bourbaki ideals of graded modules
    東京可換環論セミナー (online), 22 June
  19. Hilbert coefficients of ideals whose reduction numbers are two
    Seminarul de Algebră Comutativă Nicolae Radu (Bucharest, Romania), 4 February

    2019

  20. 非Gorenstein環におけるAuslander-Reiten予想
    MSJ Autumn Meeting 2019, at Kanazawa University (Ishikawa, Japan), 17-20 September
  21. The Auslander-Reiten conjecture for non-Gorenstein rings (slide)
    The 8th China - Japan - Korea International Symposium on Ring Theory (Aichi, Japan), 26-31 August
  22. Local cohomology of affine semigroup rings, part 2
    第16回可換環論サマースクール (Chiba, Japan), 5-8 August
  23. Local cohomology of affine semigroup rings, part 1
    第16回可換環論サマースクール (Chiba, Japan), 5-8 August
  24. Auslander-Reiten予想とUlrichイデアル
    第32回可換環論セミナー (Aomori, Japan), 27-30 June
  25. The Auslander-Reiten conjecture for non-Gorenstein Cohen-Macaulay rings (poster)
    Conference on Commutative Algebra and its Interaction with Algebraic Geometry In Honor of Bernd Ulrich (Indiana, USA), 16-21 June
  26. イデアル化のCohen-Macaulay型とresidually faithful加群について
    The 15th Mathematics Conference for Young Researchers (Hokkaido, Japan), 4-7 March
  27. Residually faithful modules and the Cohen-Macaulay type of idealizations
    第24回代数学若手研究会 (Tokyo, Japan), 18-21 February
  28. Residually faithful modules and the Cohen-Macaulay type of idealizations (slide)
    A Mini-Workshop on Commutative Algebra (Thai Nguyen, Vietnam), 6 January

    2018

  29. The structure of chains of Ulrich ideals in Cohen-Macaulay local rings of dimension one
    The 40th Japan Symposium on Commutative Algebra (Kanagawa, Japan), 22-26 November
  30. Residually faithful modules and the Cohen-Macaulay type of idealizations
    The 40th Japan Symposium on Commutative Algebra (Kanagawa, Japan), 22-26 November
  31. トレース加群からみたGorenstein性の解析
    MSJ Autumn Meeting 2018, at Okayama University (Okayama, Japan), 24-27 September
  32. The structure of chains of Ulrich ideals in Cohen-Macaulay local rings of dimension one
    MSJ Autumn Meeting 2018, at Okayama University (Okayama, Japan), 24-27 September
  33. Some categories of maximal Cohen-Macaulay modules and idealizations
    The 10th Japan-Vietnam joint seminar on commutative algebra (Hue, Vietnam), 10-14 September
  34. Infinite free resolutions, part 2
    第15回可換環論サマースクール (Aichi, Japan), 27-30 August
  35. Infinite free resolutions, part 1
    第15回可換環論サマースクール (Aichi, Japan), 27-30 August
  36. トレースイデアルを用いたゴレンシュタイン性の解析 Ⅱ
    第25回大和郡山セミナー (Nara, Japan), 2-3 July
  37. トレースイデアルを用いたゴレンシュタイン性の解析 Ⅰ
    第25回大和郡山セミナー (Nara, Japan), 2-3 July
  38. Residually faithful modules and the Cohen-Macaulay type of idealizations
    第31回可換環論セミナー (Kyoto, Japan), 27-30 June
  39. On GGL rings
    Mini-workshop on Commutative Algebra –by and for young mathematicians- (Hokkaido, Japan), 26-28 March
  40. Characterization of generalized Gorenstein rings
    MSJ Spring Meeting 2018 at The University of Tokyo (Tokyo, Japan), 18-21 March
  41. イデアル化R⋉Iのalmost Gorenstein性
    MSJ Spring Meeting 2018 at The University of Tokyo (Tokyo, Japan), 18-21 March
  42. A characterization of the Gorenstein property in terms of trace ideals
    第23回代数学若手研究会 (Osaka, Japan), 5-8 March
  43. A characterization of the Gorenstein property in terms of trace ideals
    第30回可換環論セミナー (Hokkaido, Japan), 31 January -2 February
  44. A characterization of the Gorenstein property in terms of trace ideals
    International workshop on commutative algebra by and for young mathematicians (Thai Nguyen, Vietnam), 17-21 January

    2017

  45. Ubiquity of Ulrich ideals in dimension one
    The 39th Japan Symposium on Commutative Algebra (Kyoto, Japan), 13-17 November
  46. Ulrich ideals and G-regular rings
    The 39th Japan Symposium on Commutative Algebra (Kyoto, Japan), 13-17 November
  47. Ulrich ideals and GGL rings in dimension one
    International Conference on Commutative Algebra and its Interaction to Combinatorics, Discrete Geometry and Singularity Theory (Hanoi and Ha Long, Vietnam), 11-15 September
  48. Ulrich ideals and GGL rings in dimension one
    International School and workshop on commutative algebra (Ho Chi Minh, Vietnam), 5-8 September
  49. Sally modules of rank one
    第14回可換環論サマースクール (Kanagawa, Japan), 21-24 August
  50. Gorenstein property of Rees algebras
    第14回可換環論サマースクール (Kanagawa, Japan), 21-24 August
  51. On generalized Gorenstein local rings
    明治大学可換環論セミナー (Kanagawa, Japan), 8 April
  52. First Hilbert coefficients
    International workshop on commutative algebra (Thai Nguyen, Vietnam), 4-7 January

    2016

  53. A minimal free resolution and type
    The 2nd International School on Commutative Algebra at Thai Nguyen University (Thai Nguyen, Vietnam), 5-11 June
  54. Numerical semigroup rings
    The 2nd International School on Commutative Algebra at Thai Nguyen University (Thai Nguyen, Vietnam), 5-11 June