Giovanni Gallavotti, David Ruelle SRB states and nonequilibrium statistical mechanics close to equilibrium. (17K, TeX) ABSTRACT. Nonequilibrium statistical mechanics close to equilibrium is studied using SRB states and a formula [10] for their derivatives with respect to parameters. We write general expressions for the thermodynamic fluxes (or currents) and the transport coefficients, generalizing the results of [4], [5]. In this framework we give a general proof of the Onsager reciprocity relations.