• Medientyp: E-Artikel
  • Titel: The 𝑞-Schur² algebra
  • Beteiligte: Du, Jie; Scott, Leonard
  • Erschienen: American Mathematical Society (AMS), 2000
  • Erschienen in: Transactions of the American Mathematical Society
  • Sprache: Englisch
  • DOI: 10.1090/s0002-9947-00-02262-5
  • ISSN: 0002-9947; 1088-6850
  • Entstehung:
  • Anmerkungen:
  • Beschreibung: <p>We study a class of endomomorphism algebras of certain <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="q"> <mml:semantics> <mml:mi>q</mml:mi> <mml:annotation encoding="application/x-tex">q</mml:annotation> </mml:semantics> </mml:math> </inline-formula>-permutation modules over the Hecke algebra of type <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper B"> <mml:semantics> <mml:mi>B</mml:mi> <mml:annotation encoding="application/x-tex">B</mml:annotation> </mml:semantics> </mml:math> </inline-formula>, whose summands involve both parabolic and quasi-parabolic subgroups, and prove that these algebras are integrally free and quasi-hereditary, and are stable under base change. Some consequences for decomposition numbers are discussed.</p>
  • Zugangsstatus: Freier Zugang