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Decay estimates for Rivière’s equation, with applications to regularity and compactness. (English) Zbl 1270.35152

Summary: We derive a selection of energy estimates for a generalisation of a critical equation on the unit disc in \(\mathbb{R} ^2\) introduced by Rivière. Applications include sharp regularity results and compactness theorems which generalise a large amount of previous geometric PDE theory, including some of the theory of harmonic and almost-harmonic maps from surfaces.

MSC:

35B45 A priori estimates in context of PDEs
35J47 Second-order elliptic systems
42B37 Harmonic analysis and PDEs
35A23 Inequalities applied to PDEs involving derivatives, differential and integral operators, or integrals
35B65 Smoothness and regularity of solutions to PDEs

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