Absolute continuity of laws for semilinear stochastic equations with additive noise

  title={Absolute continuity of laws for semilinear stochastic equations with additive noise},
  author={Benedetta Ferrario},
We present the Girsanov theorem for a non linear Itô equation in an infinite dimensional Hilbert space with a non linearity of polynomial growth and an infinite dimensional additive noise. We assume a condition weaker than Novikov one, as done by Mikulevicius and Rozovskii in the study of more general stochastic PDE’s. The equivalence of the laws of the linear equation and of the non linear equation implies results on weak solutions and on invariant measures for the given non linear equation… CONTINUE READING


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