Sensitivity for the Smoluchowski equation

This article investigates the question of sensitivity of the solutions of Smoluchowski equation on R_+^* with respect to parameters \lambda in the interaction kernel K^lambda. It is proved that the solution is a C^1 function of (t,lambda) with values in a good space of measures under the hypotheses K^{lambda}(x,y) \leq phi(x)phi(y), for some sub-linear function phi, a (4+epsilon)-moment assumption on the initial condition, and that the derivative is a solution, in a suitable sense, of a linearized equation.

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