Now showing items 186-205 of 314

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      On a shallow water model for the simulation of turbidity currents  [Article]

      Morales de Luna, Tomás; Castro Díaz, Manuel Jesús; Parés Madroñal, Carlos; Fernández Nieto, Enrique Domingo (Cambridge University Press, 2009)
      We present a model for hyperpycnal plumes or turbidity currents that takes into account the interaction between the turbidity current and the bottom, considering deposition and erosion effects as well as solid transport ...
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      On a visibility representation of graphs  [Article]

      Cobos Gavala, Javier; Dana Jiménez, Juan Carlos; Hurtado, Ferrán; Márquez Pérez, Alberto; Mateos Mateos, Felipe (1996)
      We give a visibility representation of graphs which extends some very well-known representations considered extensively in the literature. Concretely, the vertices are represented by a collection of parallel hyper-rectangles ...
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      On an induction–conduction PDEs system in the harmonic regime  [Article]

      González Montesinos, María Teresa; Ortegón Gallego, Francisco (Elsevier, 2014)
      We study the existence of weak solutions to a nonlinear coupled parabolic–elliptic system arising in the heating industrial process of a steel workpiece. The unknowns are the electric potential, the magnetic vector potential ...
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      On an inequivalence criterion for cocyclic Hadamard matrices  [Article]

      Armario Sampalo, José Andrés (Springer, 2010)
      Given two Hadamard matrices of the same order, it can be quite difficult to decide whether or not they are equivalent. There are some criteria to determine Hadamard inequivalence. Among them, one of the most commonly ...
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      On an Intermediate Field Capturing Riemann solver based on a Parabolic viscosity matrix for the two-layer shallow water system  [Article]

      Fernández Nieto, Enrique Domingo; Castro Díaz, Manuel Jesús; Parés Madroñal, Carlos (Plenum Press, 2011)
      The goal of this article is to design a new approximate Riemann solver for the two-layer shallow water system which is fast compared to Roe schemes and accurate compared to Lax-Friedrichs, FORCE, or GFORCE schemes ...
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      On average connectivity of the strong product of graphs  [Article]

      Abajo Casado, María Encarnación; Moreno Casablanca, Rocío; Diánez Martínez, Ana Rosa; García Vázquez, Pedro (Elsevier, 2013)
      The average connectivity κ(G) of a graph G is the average, over all pairs of vertices, of the maximum number of internally disjoint paths connecting these vertices. The connectivity κ(G) can be seen as the minimum, over ...
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      On certain doubly non-uniformly and singular non-uniformly elliptic systems  [Article]

      González Montesinos, María Teresa; Ortegón Gallego, Francisco (Elsevier, 2003-09)
      We consider the steady state of the thermistor problem consisting of a coupled set of nonlinear elliptic equations governing the temperature and the electric potential. We study the existence of weak solutions under two ...
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      On complex nilpotent Leibniz superalgebras of nilindex n+m  [Article]

      Camacho Santana, Luisa María; Gómez Martín, José Ramón; Omirov, Bakhrom Abdazovich; Khudoyberdiyev, Abror Kh. (Cornell University, 2008)
      We present the description up to isomorphism of Leibniz superal- gebras with characteristic sequence (n|m1, . . . ,mk) and nilindex n+m, where m = m1 + · · · + mk, n and m (m 6= 0) are dimensions of even and odd ...
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      On higher dimensional cocyclic Hadamard matrices  [Article]

      Álvarez Solano, Víctor; Armario Sampalo, José Andrés; Frau García, María Dolores; Real Jurado, Pedro (2015)
      Provided that a cohomological model for G is known, we describe a method for constructing a basis for n-cocycles over G, from which the whole set of n-dimensional n-cocyclic matrices over G may be straightforwardly calculated. ...
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      On new erosion models of Savage-Hutter type for avalanches  [Article]

      Bouchut, F.; Fernández Nieto, Enrique Domingo; Mangeney, A.; Lagreé, P.-Y. (Springer, 2008)
      In this work, we study the modeling of one-dimensional avalanche flows made of a moving layer over a static base, where the interface between the two can be time dependent. We propose a general model, obtained by looking ...
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      On p-Compact Sets in Classical Banach Spaces  [Article]

      Delgado Sánchez, Juan Manuel; Piñeiro Gómez, Cándido (Hikari, 2014)
      Given p ≥ 1, we denote by Cp the class of all Banach spaces X satisfying the equality Kp(Y,X) = Πdp(Y,X) for every Banach space Y , Kp (respectively, Πdp ) being the operator ideal of p-compact operators (respectively, ...
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      On quasi-orthogonal cocycles  [Article]

      Armario Sampalo, José Andrés; Flannery, D.L. (Wiley, 2017)
      We introduce the notion of quasi-orthogonal cocycle. This is motivated in part by the maximal determinant problem for square {±1}-matrices of size congruent to 2 modulo 4. Quasi-orthogonal cocycles are analogous to the ...
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      On the approximation of turbulent fluid flows by the Navier-Stokes-α equations on bounded domains  [Article]

      Gutiérrez Santacreu, Juan Vicente; Rojas Medar, M.A. (Cornell University, 2019)
      The Navier-Stokes- equations belong to the family of LES (Large Eddy Simulation) models whose fundamental idea is to capture the influence of the small scales on the large ones without computing all the whole range ...
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      On the cohomology of 3D digital images  [Article]

      González Díaz, Rocío; Real Jurado, Pedro (2005)
      We propose a method for computing the cohomology ring of three-dimensional (3D) digital binary-valued pictures. We obtain the cohomology ring of a 3D digital binary-valued picture I , via a simplicial complex K(I)K(I) ...
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      On the computation of Bernstein–Sato ideals  [Article]

      Ucha Enríquez, José María; Castro Jiménez, Francisco Jesús (Elsevier, 2004)
      In this paper we compare the approach of Brianc¸onand Maisonobe for computing Bernstein–Sato ideals—based on computations in a Poincar´e–Birkhoff–Witt algebra—with the readily available method of Oaku and Takayama. We ...
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      On the description of Leibniz algebras with nilindex n−3  [Article]

      Cabezas, J. M.; Camacho Santana, Luisa María; Gómez Martín, José Ramón; Omirov, Bakhrom Abdazovich (Akadémiai Kiadó, 2011)
      In this paper we present the classification of a subclass of natu- rally graded Leibniz algebras. These n-dimensional Leibniz algebras have the characteristic sequence equal to (n−3, 3). For this purpose we use the ...
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      On the description of Leibniz superalgebras of nilindex n+m  [Article]

      Camacho Santana, Luisa María; Gómez Martín, José Ramón; Khudoyberdiyev, Abror Kh.; Omirov, Bakhrom Abdazovich (Walter de Gruyter GmbH, 2012)
      In this work we investigate the complex Leibniz superalgebras with characteristic sequence (n1, . . . , nk|m) and nilindex n + m, where n = n1 + · · ·+nk, n and m (m 6= 0) are dimensions of even and odd parts, ...
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      On the growth of the Kronecker coefficients  [Article]

      Briand, Emmanuel; Rattan, Amarpreet; Rosas Celis, Mercedes Helena (Cornell University, 2016)
      We study the rate of growth experienced by the Kronecker coefficients as we add cells to the rows and columns indexing partitions. We do this by moving to the setting of the reduced Kronecker coefficients.
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      On the growth of the Kronecker coefficients: accompanying appendices  [Article]

      Briand, Emmanuel; Rattan, Amarpreet; Rosas Celis, Mercedes Helena (Cornell University, 2016)
      This text is an appendix to our work ”On the growth of Kronecker coefficients” [1]. Here, we provide some complementary theorems, re- marks, and calculations that for the sake of space are not going to appear into the ...
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      On the influence of the thickness of the sediment moving layer in the definition of the bedload transport formula in Exner systems  [Article]

      Fernández Nieto, Enrique Domingo; Lucas, C.; Morales de Luna, Tomás; Cordier, Stephane (Elsevier, 2014)
      In this paper we study Exner system and introduce a modified general definition for bedload transport flux. The new formulation has the advantage of taking into account the thickness of the sediment layer which avoids mass ...