2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/20602The real-space renormalization group technique is introduced to evaluate the effective diffusion constant for diffusion in inhomogeneous media, which has been obtained by singular perturbation methods. Our method is formulated on a discretized real space and hence it can be easily combined with numerical studies for partial differential equations.14 pages, 1 figure. Submitted to J. Phys. Soc. JpnDisordered Systems and Neural Networkstext