Dufty, James W.Rubí Capaceti, José Miguel2009-09-282009-09-2819871050-2947https://hdl.handle.net/2445/9466Onsager's symmetry theorem for transport near equilibrium is extended in two directions. A corresponding symmetry is obtained for linear transport near nonequilibrium stationary states, and the class of transport laws is extended to include nonlocality in both space and time. The results are formally exact and independent of any specific model for the nonequilibrium state.4 p.application/pdfeng(c) The American Physical Society, 1987Mecànica estadísticaFluctuacions (Física)Statistical mechanicsFluctuations (Physics)info:eu-repo/semantics/article38921info:eu-repo/semantics/openAccess