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Harnack inequalities and the concentration phenomenon. (Inégalités de Harnack et phénomène de concentration.) (French) Zbl 1142.35027

The author derives some inequalities for the product \(\sup \times \inf\) and explores concentration phenomena and asymptotics of solutions of some PDE’s of order \(2\) an \(4\).

MSC:

35J60 Nonlinear elliptic equations
35B45 A priori estimates in context of PDEs