Abstract
We establish pathwise existence of solutions for stochastic porous media and fast diffusion equations of type (1.1), in the full regime m∈(0,∞) and for any initial data u0∈L2(Q). Moreover, if the initial data is positive, solutions are pathwise unique. In turn, the solution map to (1.1) is a continuous function of the driving noise and it generates an associated random dynamical system. Finally, in the regime m∈{1}∪(2,∞), all the aforementioned results also hold for signed initial data.
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