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Prescribing conformally the scalar curvature of a Riemannian manifold as a given function consists in solving an elliptic PDE involving the critical Sobolev exponent. One way of attacking this problem consist in using subcritical approximations for the equation, gaining compactness properties. Together with the results in cite{MM1}, we completely describe the blow-up phenomenon in case of uniformly bounded energy and zero weak limit in positive Yamabe class. In particular, for dimension greater or equal to five, Morse functions and with non-zero Laplacian at each critical point, we show that subsets of critical points with negative Laplacian are in one-to-one correspondence with such subcritical blowing-up solutions.
We study finite-energy blow-ups for prescribed Morse scalar curvatures in both the subcritical and the critical regime. After general considerations on Palais-Smale sequences we determine precise blow up rates for subcritical solutions: in particular
We consider the problem of prescribing conformally the scalar curvature on compact manifolds of positive Yamabe class in dimension $n geq 5$. We prove new existence results using Morse theory and some analysis on blowing-up solutions, under suitable
The problem of prescribing conformally the scalar curvature of a closed Riemannian manifold as a given Morse function reduces to solving an elliptic partial differential equation with critical Sobolev exponent. Two ways of attacking this problem cons
Given a closed manifold of positive Yamabe invariant and for instance positive Morse functions upon it, the conformally prescribed scalar curvature problem raises the question, whether or not such functions can by conformally changing the metric be r
We consider the focusing energy subcritical nonlinear wave equation $partial_{tt} u - Delta u= |u|^{p-1} u$ in ${mathbb R}^N$, $Nge 1$. Given any compact set $ E subset {mathbb R}^N $, we construct finite energy solutions which blow up at $t=0$ exact