Browsing 2008 by MFO Scientific Program "Research in Pairs 2007"

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    • A 3-local characterization of Co2 

      [OWP-2008-11] Parker, Christopher; Rowley, Peter (Mathematisches Forschungsinstitut Oberwolfach, 2008-03-15)
      Conway’s second largest simple group, Co2, is characterized by the centralizer of an element of order 3 and certain fusion data.

    • Formal punctured ribbons and two-dimensional local fields 

      [OWP-2008-01] Kurke, Herbert; Osipov, Denis; Zheglov, Alexander (Mathematisches Forschungsinstitut Oberwolfach, 2008-03-05)
      We investigate formal ribbons on curves. Roughly speaking, formal ribbon is a family of locally linearly compact vector spaces on a curve. We establish a one-to-one correspondence between formal ribbons on curves plus some ...

    • Hecke duality relations of Jacobi forms 

      [OWP-2008-03] Bringmann, Kathrin; Heim, Bernhard (Mathematisches Forschungsinstitut Oberwolfach, 2008-03-07)
      In this paper we introduce a new subspace of Jacobi forms of higher degree via certain relations among Fourier coefficients. We prove that this space can also be characterized by duality properties of certain distinguished ...

    • Interpolation in Bernstein and Paley-Wiener Spaces 

      [OWP-2008-04] Olevskij, Aleksandr M.; Ulanovskii, Alexander (Mathematisches Forschungsinstitut Oberwolfach, 2008-03-08)
      We construct closed sets S of arbitrarily small measure with the property: given any discrete set L, every l-function on L can be interpolated by an L-function with spectrum on F. This should be contrasted against ...

    • Non-Standard Behavior of Density Estimators for Sums of Squared Observations 

      [OWP-2008-07] Schick, Anton; Wefelmeyer, Wolfgang (Mathematisches Forschungsinstitut Oberwolfach, 2008-03-11)
      It has been shown recently that, under an appropriate integrability condition, densities of functions of independent and identically distributed random variables can be estimated at the parametric rate by a local U-statistic, ...

    • Nonlinear Optimization for Matroid Intersection and Extensions 

      [OWP-2008-14] Berstein, Yael; Lee, Jon; Onn, Shmuel; Weismantel, Robert (Mathematisches Forschungsinstitut Oberwolfach, 2008-03-17)
      We address optimization of nonlinear functions of the form f(Wx) , where f:Rd→R is a nonlinear function, W is a d×n matrix, and feasible x are in some large finite set F ...

    • Nonlinear optimization over a Weighted Independence System 

      [OWP-2008-10] Lee, Jon; Onn, Shmuel; Weismantel, Robert (Mathematisches Forschungsinstitut Oberwolfach, 2008-03-14)
      We consider the problem of optimizing a nonlinear objective function over a weighted independence system presented by a linear-optimization oracle. We provide a polynomial-time algorithm that determines an r-best solution ...

    • Upper tails for intersection local times of random walks in supercritical dimensions 

      [OWP-2008-02] Chen, Xia; Mörters, Peter (Mathematisches Forschungsinstitut Oberwolfach, 2008-03-06)
      We determine the precise asymptotics of the logarithmic upper tail probability of the total intersection local time of p independent random walks in Zd under the assumption p(d−2)>d. Our approach allows a ...