Results 31 to 40 of about 1,702,334 (237)

Finite-difference distributions for the Ginibre ensemble [PDF]

, 2002
The Ginibre ensemble of complex random matrices is studied. The complex valued random variable of second difference of complex energy levels is defined.
Bickel P J, Duras M M, Duras M M, Ginibre J, Haake F, Haake F, Haake F, Maciej M Duras, Mehta M L, Mehta M L, Mehta M L, Mehta M L, Porter C E, Porter C E, Reichl L E, Wigner E P, Wigner E P   +16 more
core   +1 more source

Non-standard and Numerov finite difference schemes for finite difference time domain method to solve one-dimensional Schrödinger equation

Journal of Physics: Theories and Applications, 2018
The purpose of  this paper is to show some improvements of the finite-difference time domain (FDTD) method using Numerov and non-standard finite difference (NSFD) schemes for solving the one-dimensional Schrödinger equation.
Lily Maysari Angraini, I Wayan Sudiarta
doaj   +1 more source

Finite logarithmic order meromorphic solutions of linear difference/differential-difference equations [PDF]

Mathematica Bohemica
Firstly we study the growth of meromorphic solutions of linear difference equation of the form A_k(z)f(z+c_k)+\cdots+A_1(z)f(z+c_1)+A_0(z)f(z)=F(z), where $A_k(z),\ldots,A_0(z)$ and $F(z)$ are meromorphic functions of finite logarithmic order, $c_i$
Abdelkader Dahmani, Benharrat Belaïdi
doaj   +1 more source

A unified approach to Mimetic Finite Difference, Hybrid Finite Volume and Mixed Finite Volume methods [PDF]

, 2008
We investigate the connections between several recent methods for the discretization of anisotropic heterogeneous diffusion operators on general grids.
Eymard R., JÉRÔME DRONIOU, RAPHAÈLE HERBIN, ROBERT EYMARD, THIERRY GALLOUËT   +4 more
core   +5 more sources

Finite-Difference Equations in Relativistic Quantum Mechanics [PDF]

, 1994
Relativistic Quantum Mechanics suffers from structural problems which are traced back to the lack of a position operator $\hat{x}$, satisfying $[\hat{x},\hat{p}]=i\hbar\hat{1}$ with the ordinary momentum operator $\hat{p}$, in the basic symmetry group --
Aldaya V, Aldaya V, Aldaya V, Aldaya V, J Guerrero, Kostant B, Mir-Kasimov R M, Sniatycki J, Souriau J M, V Aldaya, Woodhouse N   +10 more
core   +2 more sources

On finite-difference approximations for normalized Bellman equations [PDF]

, 2009
A class of stochastic optimal control problems involving optimal stopping is considered. Methods of Krylov are adapted to investigate the numerical solutions of the corresponding normalized Bellman equations and to estimate the rate of convergence of ...
A.N. Shiryaev, David Šiška, E.R. Jakobsen, E.R. Jakobsen, G. Barles, G. Barles, H. Dong, H.J. Kushner, I. Gyöngy, I. Gyöngy, István Gyöngy, J.-L. Menaldi, N.V. Krylov, N.V. Krylov, N.V. Krylov, N.V. Krylov, N.V. Krylov, N.V. Krylov, N.V. Krylov   +18 more
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Real space finite difference method for conductance calculations [PDF]

, 2004
We present a general method for calculating coherent electronic transport in quantum wires and tunnel junctions. It is based upon a real space high order finite difference representation of the single particle Hamiltonian and wave functions.
A. Levy Yeyati, C. Berthod, E. G. Emberly, F. Gagel, G. Golub, Geert Brocks, J. Neugebauer, J. R. Chelikowsky, K. Nicolić, L. D. Landau, Petr A. Khomyakov, S. Datta   +11 more
core   +4 more sources

Weak solvability of the unconditionally stable difference scheme for the coupled sine-Gordon system

Nonlinear Analysis, 2020
In this paper, we study the existence and uniqueness of weak solution for the system of finite difference schemes for coupled sine-Gordon equations. A novel first order of accuracy unconditionally stable difference scheme is considered.
Ozgur Yildirim, Meltem Uzun
doaj   +1 more source

Method to Estimate Thermal Transients in Reactors and Determine Their Parameter Sensitivities without a Forward Simulation

Energies, 2022
Thermal response time is an important parameter for the control of fast reactors. Modern thermal hydraulic codes allow for the modeling of transient responses and can also be used to understand the dominant factors that affect them.
Sydney A. Holdampf, Andrew G. Osborne, Mark R. Deinert   +2 more
doaj   +1 more source

Exact Finite-Difference Calculus: Beyond Set of Entire Functions

Mathematics
In this paper, a short review of the calculus of exact finite-differences of integer order is proposed. The finite-difference operators are called the exact finite-differences of integer orders, if these operators satisfy the same characteristic ...
Vasily E. Tarasov
doaj   +1 more source