Random Walk, Laplace Equation, Poisson Equation, Brownian Motion, Maxwell Boltzmann.
approach is to discretise a domain of a problem and set up and solve a system of linear equations to approximate φ_ij at all points on the grids of the domain. The random walk method, on the other hand, takes random steps starting from a given point (x0, y0) on the grids within a domain and traces