Examples of using Finite difference in English and their translations into Greek
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Main article: finite difference.
Finite difference methods for the Poisson equation.
Main article: Finite difference method.
Finite difference solution method for the Poisson equation.
The resulting methods are called finite difference methods.
A finite difference is a mathematical expression of the form f(x+ b)- f(x+ a).
Here\(\Delta_h^n)\ is the n-th finite difference operator with step size h.
Finite difference and element methods for the two-point boundary value problem.
This process is called a finite difference estimate of the derivative.
The finite difference of higher orders can be defined in recursive manner as Δn h≡ Δh(Δn- 1 h).
A closely related derivation is to substitute the forward finite difference formula for the derivative.
She provided the first rigorous proofs of the convergence of a finite difference method for the Navier- Stokes equations.
If necessary, the finite difference can be centered about any point by mixing forward, backward, and central differences. .
The three most widely used numerical methods to solve PDEs are the finite element method(FEM),finite volume methods(FVM) and finite difference methods(FDM).
In an analogous way,one can obtain finite difference approximations to higher order derivatives and differential operators.
She was known for her work on partial differential equations(especially Hilbert's 19th problem) and fluid dynamics.[1]She provided the first rigorous proofs of the convergence of a finite difference method for the Navier- Stokes equations.
Similar to the finite difference method or finite element method, values are calculated at discrete places on a meshed geometry.
Alternatives are numerical analysis techniques from simple finite difference schemes to the more mature multigrid and finite element methods.
Finite difference and element methods in piecewise linear polynomial approximation for the two-point boundary value problem with various boundary conditions.
Provides some help:"Given a properly posed linear initial value problem and a finite difference approximation to it that satisfies the consistency condition, stability is the necessary and sufficient condition for convergence".
Finite difference and element methods/method for initial and boundary value problems for evolutionary partial differential equations(heat equation, wave equation, first order hyperbolic type, Schrodinger equation).
Modern numerical methods, techniques and software tools including numerical methods for initial and boundary-value problems for PDE(partial differential equations) based on Galerkin-type approach,FEM(the finite element method), FDM(the finite difference method), etc.
Today, the term"finite difference" is often taken as synonymous with finite difference approximations of derivatives, especially in the context of numerical methods.
His research interests are in Computational Methods- Mathematical Modelling and Applications, High Performance Parallel Computations- Design of parallel algorithmic methods, Mathematics of Computing- Numerical Algorithms- Mathematical Software and Sparse matrix technology andnumerical solution of partial differential equations finite difference method, finite element method, domain decomposition method, multigrid methods, etc.
Authors for whom finite differences mean finite difference approximations define the forward/backward/central differences as the quotients given in this section(instead of employing the definitions given in the previous section).
The solution approach is based either on eliminating the differential equation completely(steady state problems), or rendering the PDE into an approximating system of ordinary differential equations, which are then numerically integrated using standard techniquessuch as Euler's method, Runge- Kutta, etc. Finite-difference methods are numerical methods for approximating the solutions to differential equations using finite difference equations to approximate derivatives.
In this work,using the Finite Difference Time Domain method, we numerically examine the well-known Layer-By-Layer phononic crystal as a suitable candidate for applications in seismic protection of existing urban or countryside structures, monuments or any construction vulnerable to a seismic event.
Different models use different solution methods:some global models and almost all regional models use finite difference methods for all three spatial dimensions, while other global models and a few regional models use spectral methods for the horizontal dimensions and finite-difference methods in the vertical.
