Reference articles

List of articles I find that are well written and explain a concept :)

by Hari · updated 3mo ago

Numerical differentiation: finite differences
Finite difference formulas are used to approximate derivatives of a function at a point by utilizing data points. Different orders of approximations are derived for various situations in numerical differentiation.
by A. Yew
dam.brown.edu
Hari added 3mo ago
central difference method
With Neumann or Neumann-like (e.g. Robin) conditions you want to be careful that you discretize the boundary derivative in a way which has the same order as your discretization of the interior derivatives
from Finite Difference Boundary Conditions by Ian
Hari added 3mo ago
Neumann Boundary conditions on 2D grid with non-uniform mesh space for elliptic PDE
by Nasser M. Abbasi
12000.org
Hari added 3mo ago
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Numerical differentiation: finite differences