Quasilinear problems involving a perturbation with quadratic growth in the gradient and a noncoercive zeroth order term [PDF]
, 2015 In this paper we consider the problem u in H^1_0 (Omega), - div (A(x) Du) = H(x, u, Du) + f(x) + a_0 (x) u in D'(Omega), where Omega is an open bounded set of R^N, N \geq 3, A(x) is a coercive matrix with coefficients in L^\infty(Omega), H(x, s, xi) is a
Hamour, Boussad, Murat, François
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Symmetries and structure of skewed and double distributions [PDF]
, 1998 Extending the concept of parton densities onto nonforward matrix elements of quark and gluon light-cone operators, one can use two types of nonperturbative functions: double distributions (DDs) f(x,\alpha;t), F(x,y;t) and skewed (off&nonforward) parton ...
Radyushkin, A. V.
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On some mean square estimates in the Rankin-Selberg problem [PDF]
, 2006 An overview of the classical Rankin-Selberg problem involving the asymptotic formula for sums of coefficients of holomorphic cusp forms is given. We also study the function $\Delta(x;\xi) (0\le\xi\le1)$, the error term in the Rankin-Selberg problem ...
Ivic, Aleksandar
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Fast Computation of Fourier Integral Operators [PDF]
, 2006 We introduce a general purpose algorithm for rapidly computing certain types of oscillatory integrals which frequently arise in problems connected to wave propagation and general hyperbolic equations.
Candes, Emmanuel +2 more
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A delimitation of the support of optimal designs for Kiefer's $\phi_p$-class of criteria [PDF]
, 2013 The paper extends the result of Harman and Pronzato [Stat. & Prob. Lett., 77:90--94, 2007], which corresponds to $p=0$, to all strictly concave criteria in Kiefer's $\phi_p$-class.
Pronzato, Luc
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The parabolic Anderson model in a dynamic random environment: basic properties of the quenched Lyapunov exponent [PDF]
, 2013 In this paper we study the parabolic Anderson equation \partial u(x,t)/\partial t=\kappa\Delta u(x,t)+\xi(x,t)u(x,t), x\in\Z^d, t\geq 0, where the u-field and the \xi-field are \R-valued, \kappa \in [0,\infty) is the diffusion constant, and $\Delta$ is ...
Erhard, Dirk +2 more
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Ricci Collineations of the Bianchi Types I and III, and Kantowski-Sachs Spacetimes [PDF]
, 2000 Ricci collineations of the Bianchi types I and III, and Kantowski-Sachs space- times are classified according to their Ricci collineation vector (RCV) field of the form (i)-(iv) one component of $\xi^a (x^b)$ is nonzero, (v)-(x) two components of $\xi^a (
Baysal, H. +4 more
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Generalized Parton Distributions at x->1
, 2003 Generalized parton distributions at large $x$ are studied in perturbative QCD approach. As $x\to 1$ and at finite $t$, there is no $t$ dependence for the GPDs which means that the active quark is at the center of the transverse space.
A. Brandenburg +43 more
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A Multiscale Butterfly Algorithm for Multidimensional Fourier Integral Operators
, 2015 This paper presents an efficient multiscale butterfly algorithm for computing Fourier integral operators (FIOs) of the form $(\mathcal{L} f)(x) = \int_{R^d}a(x,\xi) e^{2\pi \i \Phi(x,\xi)}\hat{f}(\xi) d\xi$, where $\Phi(x,\xi)$ is a phase function, $a(x,\
Li, Yingzhou +2 more
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Distributional properties of exponential functionals of Levy processes [PDF]
, 2012 We study the distribution of the exponential functional $I(\xi,\eta)=\int_0^{\infty} \exp(\xi_{t-}) \d \eta_t$, where $\xi$ and $\eta$ are independent L\'evy processes.
Kuznetsov, A., Pardo, J. C., Savov, M.
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