Se presenta un resultado de shadowing para un problema de evolucion parabolico no autonomo. Utilizando el metodo de Euler hacia atras se demuestra que bajo ciertas hipótesis de regularidad se puede aproximar usando shadowing la solucion de un problema de la forma                               u'(t) = A(t)u(t) + f(t);donde A(t) es el generador de un semigrupo analítico sobre un espacio de Banach.

Se presenta un resultado de shadowing para un problema de evolucion parabolico no autonomo. Utilizando el metodo de Euler hacia atras se demuestra que bajo ciertas hipótesis de regularidad se puede aproximar usando shadowing la solucion de un problema de la forma                               u'(t) = A(t)u(t) + f(t);donde A(t) es el generador de un semigrupo analítico sobre un espacio de Banach.

The theory of semigroups n times integrated is a generalization of strongly continuous semigroups, which was developed from 1984, and is widely used for the study of the existence and uniqueness ofproblems such Cauchy in which the operator domain is not necessarily dense. This paper presents an application of semigroups n times integrated into a problem of viscoelasticity, which is formulated as a Cauchy problem on a Banach space presents .

The theory of semigroups n times integrated is a generalization of strongly continuous semigroups, which was developed from 1984, and is widely used for the study of the existence and uniqueness ofproblems such Cauchy in which the operator domain is not necessarily dense. This paper presents an application of semigroups n times integrated into a problem of viscoelasticity, which is formulated as a Cauchy problem on a Banach space presents .