Critical functions and elliptic PDE on compact riemannian manifolds

Details Critical functions and elliptic PDE on compact riemannian manifolds Critical functions and elliptic PDE on compact riemannian manifolds

2010-10-02

arxiv.org/abs/1010.0336v1

Advances in differential equations, Volume 12, Number 1 (2007), 55-120

Mathematics

Differential Geometry

66 pages

Scientific paper

We study in this work the existence of minimizing solutions to the critical-power type equation $\triangle_{\textbf{g}}u+h.u=f .u^{\frac{n+2}{n-2}} $ on a compact riemannian manifold in the limit case normally not solved by variational methods. For this purpose, we use a concept of "critical function" that was originally introduced by E. Hebey and M. Vaugon for the study of second best constant in the Sobolev embeddings. Along the way, we prove an important estimate concerning concentration phenomena's when $f$ is a non-constant function. We give here intuitive details.

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