A1 Journal article (refereed)
The Radó-Kneser-Choquet theorem for p-harmonic mappings between Riemannian surfaces (2020)


Adamowicz, T., Jääskeläinen, J., & Koski, A. (2020). The Radó-Kneser-Choquet theorem for p-harmonic mappings between Riemannian surfaces. Revista Matematica Iberoamericana, 36(6), 1779-1834. https://doi.org/10.4171/rmi/1183


JYU authors or editors


Publication details

All authors or editorsAdamowicz, Tomasz; Jääskeläinen, Jarmo; Koski, Aleksis

Journal or seriesRevista Matematica Iberoamericana

ISSN0213-2230

eISSN2235-0616

Publication year2020

Volume36

Issue number6

Pages range1779-1834

PublisherEuropean Mathematical Society Publishing House

Publication countrySwitzerland

Publication languageEnglish

DOIhttps://doi.org/10.4171/rmi/1183

Publication open accessNot open

Publication channel open access

Publication is parallel published (JYX)https://jyx.jyu.fi/handle/123456789/68367

Publication is parallel publishedhttps://arxiv.org/abs/1806.03020


Abstract

In the planar setting, the Radó–Kneser–Choquet theorem states that a harmonic map from the unit disk onto a Jordan domain bounded by a convex curve is a diffeomorphism provided that the boundary mapping is a homeomorphism. We prove the injectivity criterion of Radó–Kneser–Choquet for p-harmonic mappings between Riemannian surfaces.

In our proof of the injectivity criterion we approximate the p-harmonic map with auxiliary mappings that solve uniformly elliptic systems. We prove that each auxiliary mapping has a positive Jacobian by a homotopy argument. We keep the maps injective all the way through the homotopy with the help of the minimum principle for a certain subharmonic expression that is related to the Jacobian.


KeywordsJacobians

Free keywordscurvature; Jacobian; maximum principle; p-harmonic mappings; Riemannian surface; subharmonicity; univalent


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Ministry reportingYes

Reporting Year2020

JUFO rating2


Last updated on 2024-03-04 at 21:17