Displaying similar documents to “Harnack's estimates: positivity and local behavior of degenerate and singular parabolic equations.”

A survey of results on nonlinear Venttsel problems

Darya E. Apushkinskaya, Alexander I. Nazarov (2000)

Applications of Mathematics

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We review the recent results for boundary value problems with boundary conditions given by second-order integral-differential operators. Particular attention has been paid to nonlinear problems (without integral terms in the boundary conditions) for elliptic and parabolic equations. For these problems we formulate some statements concerning a priori estimates and the existence theorems in Sobolev and Hölder spaces.