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2002 Fiscal Year Final Research Report Summary

Research on Broue's conjecture

Research Project

Project/Area Number 13640033
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Algebra
Research InstitutionKumamoto University

Principal Investigator

WATANABE Atsumi  Kumamoto University, Faculty of Science, Professor, 理学部, 助教授 (90040120)

Co-Investigator(Kenkyū-buntansha) HORIMOTO Hiroshi  Kumamoto National College of Technology, Assistant, 助手 (20342587)
SASAKI Hiroki  Ehime University, Professor, 理学部, 教授 (60142684)
USAMI Yoko  Ochanomizu University, Professor, 理学部, 教授 (90151993)
Project Period (FY) 2001 – 2002
KeywordsBroue's conjecture / Isaacs correspondence / block / derived equivalence / Alperin's conjecture / Morita equivalence / perfect isometry
Research Abstract

1. We showed that a block of a finite group and its Isaacs correspondent are Morita equivalent : Let A and G be finite groups of coprime orders such that A acts on G via automorphims. If B is a A-invariant block of G with a defect group centralized by A, then there exists a block b of C_G(A) such that B and b are perfect isometric by the Isaacs correspondence. B and b are Morita equivalent.This result is to be appeared in Archiv der Mathematik.
2. We also showed that Broue's conjecture for the principal blocks of finite groups under some conditions is reduced to the finite simple groups: Let r be a prime. If Broue's conjecture is true for the principal blocks of finite simple groups G such that N_G(P)/C_G(P) is a cyclic group of order r^2 for an abelian Sylow p-subgroup P of G, then Broue's conjecture is true for the principal blocks of finite groups G such that N_G(P)/C_G(P) is a cyclic group of order r^2 for an abelian Sylow p-subgroup P of G.
3. We showed that blocks of finite general groups are isotypic by Shintani descent under some conditions.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 渡辺アツミ(with M.Sawabe): "On the principal blocks of finite groups with abelian sylow p-subgroups"J.Algebra. 237 No.2. 719-734 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 渡辺アツミ: "The Isaacs character correspondence and isotypies between blocks of finite groups"Advanced Stadies in Pure Mathematics, Groups and Combinatrics --in memory of Michio Suzuki. 32. 437-448 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 渡辺アツミ: "Morita equivalence of Isaacs correspondence for blocks of finite groups"Archiv der Mathmatik. (発表予定).

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 宇佐美陽子(with M.Nakabayashi): "Morita equivalent principal 3-blocks of the Chevalley groups G_2(q)"Proc. London Math Soc.. (3) 86. (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 佐々木洋城(with T.Okuyama): "Relative projectivity of modules and cohomology theory of finite groups"Algebras and representation theory. 4 No.5. 405-444 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 堀本 博: "A note on the Glauberman correspondence of p-blocks of finite p-solvable groups"Hokkaido Math.J.. 31. 255-259 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Masato Sawabe: "On the principal blocks of finite groups with abelian Sylow p-subgroups"J. Algebra. 237. 719-734 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Atumi Watanabe: "The Isaacs correspondence and isotypies between blocks of finite groups"Advanced Studies in Pure Mathematics, Groups and Combinatorics - in memory of Michio Suzuki. 32. 437-448 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Atumi Watanabe: "Morita equivalence of Isaacs correspondence for blocks of finite groups"Archiv der Math. to appear.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Miyako Nakabayashi: "Morita equivalent principal 3-blocks of the Chevalley groups G_2(q)"Proc. of London Math. Soc.. (3)86, to appear. (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tetsuro Okuyama: "Relative projectivity of modules and cohomology theory of finite groups"Algebras and representation theory. vol.4,No.5. 405-444 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hiroshi Horimoto: "A note on the Glauberman correspondence of p-blocks of finite p-solvable groups"Hokkaido Mathematical Journal. Vol.31. 255-259 (2002)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2004-04-14  

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