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Now showing items 1-10 of 14

#### A splitting method for the augmented Burgers equation

(2017-07-01)

In this paper we consider a splitting method for the augmented Burgers equation and prove that it is of ﬁrst order. We also analyze the large-time behavior of the approximated solution by obtaining the ﬁrst term in the ...

#### A semi-discrete large-time behavior preserving scheme for the augmented Burgers equation

(2017-06-01)

In this paper we analyze the large-time behavior of the augmented Burgers equation. We first study the well-posedness of the Cauchy problem and obtain $L^1-L^p$ decay rates. The asymptotic behavior of the solution is ...

#### Dispersion for 1-d Schrödinger and wave equations with bv coefficients

(2016-01-01)

In this paper we analyze the dispersion for one dimensional wave and Schrödinger equations with BV coefficients. In the case of the wave equation we give a complete answer in terms of the variation of the logarithm of the ...

#### Large-time asymptotics, vanishing viscosity and numerics for 1-D scalar conservation laws

(2014-12-31)

In this paper we analyze the large time asymptotic behavior of the discrete solutions of numerical approximation schemes for scalar hyperbolic conservation laws. We consider three monotone conservative schemes that are ...

#### Asymptotic expansions for anisotropic heat kernels

(2013-12-31)

We obtain the asymptotic expansion of the solutions of some anisotropic heat equations when the initial data belong to polynomially weighted Lp-spaces. We mainly address two model examples. In the first one, the diffusivity ...

#### Inverse problem for the heat equation and the Schrödinger equation on a tree

(2012-12-31)

In this paper, we establish global Carleman estimates for the heat and Schrödinger equations on a network. The heat equation is considered on a general tree and the Schrödinger equation on a star-shaped tree. The Carleman ...

#### Lower and upper bounds for the first eigenvalue of nonlocal diffusion problems in the whole space

(2012-12-31)

We find lower and upper bounds for the first eigenvalue of a nonlocal diffusion operator of the form T(u)=-∫ ℝdK(x,y)(u(y)-u(x))dy. Here we consider a kernel K(x, y)=ψ(y-a(x))+ψ(x-a(y)) where ψ is a bounded, nonnegative ...

#### Convergence rates for dispersive approximation schemes to nonlinear Schrödinger equations

(2012-12-31)

This article is devoted to the analysis of the convergence rates of several numerical approximation schemes for linear and nonlinear Schrödinger equations on the real line. Recently, the authors have introduced viscous and ...

#### Dispersive Properties for Discrete Schrödinger Equations

(2011-12-31)

In this paper we prove dispersive estimates for the system formed by two coupled discrete Schrödinger equations. We obtain estimates for the resolvent of the discrete operator and prove that it satisfies the limiting ...

#### Dispersion for the Schrödinger equation on networks

(2011-12-31)

In this paper, we consider the Schrödinger equation on a network formed by a tree with the last generation of edges formed by infinite strips. We give an explicit description of the solution of the linear Schrödinger ...