Interior and Boundary-Regularity for Fractional Harmonic Maps on Domains

Details Interior and Boundary-Regularity for Fractional Harmonic Maps on Domains Interior and Boundary-Regularity for Fractional Harmonic Maps on Domains

2011-03-27

arxiv.org/abs/1103.5203v1

Mathematics

Analysis of PDEs

Scientific paper

We prove continuity on domains up to the boundary for n/2-polyharmonic maps into manifolds. Technically, we show how to adapt Helein's direct approach to the fractional setting. This extends a remark by the author that this is possible in the setting of Riviere's famous regularity result for critical points of conformally invariant variational functionals. Moreover, pointwise behavior for the involved three-commutators is established. Continuity up to the boundary is then obtained via an adaption of Hildebrandt and Kaul's technique to the non-local setting.

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