Results 31 to 40 of about 2,628,231 (286)

Exact and nonstandard finite difference schemes for the generalized KdV–Burgers equation

open access: yesAdvances in Difference Equations, 2020
We consider the generalized KdV–Burgers KdVB ( p , m , q ) $\operatorname{KdVB}(p,m,q)$ equation. We have designed exact and consistent nonstandard finite difference schemes (NSFD) for the numerical solution of the KdVB ( 2 , 1 , 2 ) $\operatorname{KdVB}(
C. Koroglu
doaj   +1 more source

Heat capacity estimators for random series path-integral methods by finite-difference schemes [PDF]

open access: yes, 2003
Previous heat capacity estimators used in path integral simulations either have large variances that grow to infinity with the number of path variables or require the evaluation of first and second order derivatives of the potential. In the present paper,
Doll, J. D.   +3 more
core   +4 more sources

High-Order Approximation to Generalized Caputo Derivatives and Generalized Fractional Advection–Diffusion Equations

open access: yesMathematics, 2023
In this article, a high-order time-stepping scheme based on the cubic interpolation formula is considered to approximate the generalized Caputo fractional derivative (GCFD).
Sarita Kumari   +2 more
doaj   +1 more source

Probing CPT violation with atmospheric neutrinos [PDF]

open access: yes, 2001
We investigate the recently suggested scheme of independent mass matrices for neutrinos and antineutrinos. Such a CPT violating scheme is able to account for all neutrino data with the three known flavors.
Skadhauge, S.
core   +2 more sources

On the accuracy of difference scheme for Navier-Stokes equations

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2014
The article presents a study of difference schemes in time, which accuracy can be arbitrarily high. We present difference schemes in time for solving the Navier-Stokes equations, where series expansions are used to find the singularities of solutions of ...
Nikolay I Sidnyaev, Nadezhda M Gordeeva
doaj   +1 more source

Lattice and q-difference Darboux-Zakharov-Manakov systems via $\bar{\partial}$-dressing method

open access: yes, 1995
A general scheme is proposed for introduction of lattice and q-difference variables to integrable hierarchies in frame of $\bar{\partial}$-dressing method .
B G Konopelchenko   +23 more
core   +1 more source

The modeling of LED's disposition

open access: yesLietuvos Matematikos Rinkinys, 2004
The goal of this work is to construct the scheme of constructing light  – emitting diodes system. The mathematical model was written for a light-emitting diodes lamp. The finite difference technique was used for the discretization of mathematical model.
Jurgita Dabulytė   +2 more
doaj   +3 more sources

Application of the Method of Summation Identities in Solving a Boundary-Value Problem for the Lame Equations [PDF]

open access: yesУчёные записки Казанского университета: Серия Физико-математические науки, 2016
A boundary-value problem on an interval for a one-dimensional system of the Lame equations corresponding to a physical problem of propagation of an elastic wave through the gradient layer is considered. In this case, the coefficients of the equations are
A.V. Anufrieva, E.V. Rung, D.N. Tumakov
doaj  

Scalar Wave Equation Modeling with Time-Space Domain Dispersion-Relation-Based Staggered-Grid Finite-Difference Schemes [PDF]

open access: yes, 2011
The staggered-grid finite-difference (SFD) method is widely used in numerical modeling of wave equations. Conventional SFD stencils for spatial derivatives are usually designed in the space domain.
Liu, Yang, Sen, Mrinal K.
core   +2 more sources

Stability for inhomogeneous difference schemes [PDF]

open access: yesProceedings of the American Mathematical Society, 1961
where u is a (possibly vector-valued) unknown function of a real "time" variable t and an N-dimensional real vector "space" variable x. Here A is a linear operator, constant2 in t, operating on u, where u is considered a function of x alone (i.e., A acts on elements of a linear space 63 and, for each value of t, u(., t) C 63). The function f is a known
openaire   +2 more sources

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