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Local Aronson-Benilan estimates and entropy formulae for porous medium and fast diffusion equations on manifolds

140   0   0.0 ( 0 )
 نشر من قبل Peng Lu
 تاريخ النشر 2008
  مجال البحث
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In this work we derive local gradient and Laplacian estimates of the Aronson-Benilan and Li-Yau type for positive solutions of porous medium equations posed on Riemannian manifolds with a lower Ricci curvature bound. We also prove similar results for some fast diffusion equations. Inspired by Perelmans work we discover some new entropy formulae for these equations.



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