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About Lp estimates for the spatially homogeneous Boltzmann equation

Laurent Desvillettes, Clément Mouhot

math.AParXiv:math/0607540

Abstract

For the homogeneous Boltzmann equation with (cutoff or non cutoff) hard potentials, we prove estimates of propagation of Lp norms with a weight (1+ |x|2)q/2 (1 < p < +∞, q ∈ \+ large enough), as well as appearance of such weights. The proof is based on some new functional inequalities for the collision operator, proven by elementary means.

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