• Constraints on the automorphism group of a curve 

    González Rovira, Josep (2017-01-01)
    Article
    Accés obert
    For a curve of genus > 1 defined over a finite field, we present a sufficient criterion for the non-existence of automorphisms of order a power of a rational prime. We show how this criterion can be used to determine the ...
  • Equations of hyperelliptic Shimura curves 

    Molina Blanco, Santiago (2012)
    Article
    Accés obert
    We describe a method for computing equations of hyperelliptic Shimura curves attached to indefinite quaternion algebras over Q and Atkin–Lehner quotients of them. It exploits Cerednik–Drinfeld 's non-archimedean uniformization ...
  • NURBS-enhanced finite element method (NEFEM) 

    Sevilla Cárdenas, Rubén; Fernandez Mendez, Sonia; Huerta, Antonio (Wiley and Sons, 2008-10)
    Article
    Accés obert
    An improvement to the classical finite element (FE) method is proposed. It is able to exactly represent the geometry by means of the usual CAD description of the boundary with non-uniform rational B-splines (NURBS). Here, ...
  • NURBS-enhanced finite element method for Euler equations 

    Sevilla Cárdenas, Rubén; Fernandez Mendez, Sonia; Huerta, Antonio (2008-07)
    Article
    Accés obert
    In this work, the NURBS-enhanced finite element method (NEFEM) is combined with a discontinuous Galerkin (DG) formulation for the numerical solution of Euler equations of gas dynamics. With NEFEM, numerical fluxes along ...