Browsing by Subject "algebra"

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  • Rapp, Akos; Schmitteckert, Peter; Takacs, Gabor; Zarand, Gergely (Bristol : IOP Publishing Ltd., 2013-01-28)
    We determine numerically the single-particle and the two-particle spectrum of the three-state quantum Potts model on a lattice by using the density matrix renormalization group method, and extract information on the ...
  • Alexeev, V.; Birkenhake, C.; Hulek, Klaus (Berlin : Walter de Gruyter, 2002)
    Let (C, l) be a stable curve with an involution. Following a classical construction one can define its Prym variety P, which in this case turns out to be a semiabelian group variety and usually not complete. In this paper ...
  • Melo, Severino T.; Schick, Thomas; Schrohe, Elmar (Berlin : Walter de Gruyter, 2006-12-07)
    We study the C*-closure U of the algebra of all operators of order and class zero in Boutet de Monvel's calculus on a compact connected manifold X with boundary partial derivative X not equal phi. We find short exact ...
  • Hulek, Klaus; Spandaw, J.; van Geemen, B.; van Straten, D. (Berlin : Walter de Gruyter, 2001-08)
    The moduli space of (1, 3)-polarized abelian surfaces with full level-2 structure is birational to a double cover of the Barth Nieto quintic. Barth and Nieto have shown that these varieties have Calabi-Yau models Z and Y, ...
  • Mathas, Andrew; Soriano, Marcos (Berlin : Walter de Gruyter, 2008-06)
    This paper develops an abstract framework for constructing ‘‘seminormal forms’’ for cellular algebras. That is, given a cellular R-algebra A which is equipped with a family of JM-elements we give a general technique for ...
  • Grübel, Rudolf; Von Öhsen, Niklas (Cambridge : Cambridge University Press, 2001)
    The random record distribution ν associated with a probability distribution μ can be written as a convolution series, ν = Σn=1∞(n + 1)-1μ(Black star)n. Various authors have obtained results on the behaviour of the tails ...