Effective Resistances for Ladder–Like Chains Carmona, A. ∗ , Encinas, A.M. ∗ , Mitjana, M. † May 29, 2014 Abstract Here we consider a class of generalized linear chains; that is, the ladder–like chains as a perturbation of a 2n–path by adding consecutive weighted edges between opposite vertices. This class of chains in particular includes a big family of networks that goes from the cycle, unicycle chains up to ladder networks. In this paper, we obtain the Green function, the effective resistance and the Kirchhoff index of those ladder–like chains as function of the the Green function, the effective resistance and the Kirchhoff index of a path. * Departament de Matem` atica Aplicada III, UPC-BarcelonaTech † Departament de Matem` atica Aplicada I, UPC-BarcelonaTech 1