Approximation equations 3 Finite-difference solution Iterative methods 3 Numerical experiments 3 Finite difference method 2 Finite-difference discretization 2 Number of iterations 2 Numerical methods 2 Partial differential equations 2 Successive over relaxation 2 Alternating group explicit 1 Boundary value problems 1 Derivative operators 1 Discretization process 1 Finite difference approximations 1 Fractional derivative operator 1 Implicit finite-difference schemes 1 Linear systems 1 Maximum absolute error 1 Parabolic Equations 1 Two point boundary value problems 1