2004/10/06 by Djadli, Zindine, Malchiodi, Andrea · 2 citations
#35B33 #35J35 #53A30 #53C21 #Analysis of PDEs (math.AP) #FOS: Mathematics
paper · doi:10.48550/arxiv.math/0410141
Given a compact four dimensional manifold, we prove existence of conformal metrics with constant Q-curvature under generic assumptions. The problem amounts to solving a fourth-order nonlinear elliptic equation with variational structure. Since the corresponding Euler functional is in general unbounded from above and from below, we employ topological methods and minimax schemes, jointly with a compactness result by the second author.