The analysis of the finite difference schemes with nonuniform meshes for the problems of partial differential equations is extremely rare even for very simple problems and even for the method of fully ...

SIAM Journal on Numerical Analysis, Vol. 38, No. 3 (2001), pp. 770-798 (29 pages) The lowest order Raviart-Thomas rectangular element is considered for solving the singular perturbation problem -div(a ...

Centroidal Voronoi tessellation (CVT) represents a unique configuration of Voronoi diagrams in which each generating point is also the centre of mass of the corresponding cell. This approach has ...