34 research outputs found

    An ultraparabolic problem arising from age--dependent population diffusion

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    Global existence of solutions for the relativistic Boltzmann equation with arbitrarily large initial data on a Bianchi type I space-time

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    We prove, for the relativistic Boltzmann equation on a Bianchi type I space-time, a global existence and uniqueness theorem, for arbitrarily large initial data.Comment: 17 page

    An ultraparabolic problem arising from age-dependent population diffusion

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    Sobolev regularity for solutions of parabolic equations by extrapolation methods

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