We prove a version of the Inverse Function Theorem for continuous weakly differentiable mappings. Namely, a nonconstant mapping is a local homeomorphism if it has integrable inner distortion function and satisfies a certain differential inclusion. The integrability assumption is shown to be optimal.
@article{AIHPC_2010__27_2_517_0,
author = {Kovalev, Leonid V. and Onninen, Jani and Rajala, Kai},
title = {Invertibility of Sobolev mappings under minimal hypotheses},
journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
volume = {27},
year = {2010},
pages = {517-528},
doi = {10.1016/j.anihpc.2009.09.010},
mrnumber = {2595190},
zbl = {1190.30019},
language = {en},
url = {http://dml.mathdoc.fr/item/AIHPC_2010__27_2_517_0}
}
Kovalev, Leonid V.; Onninen, Jani; Rajala, Kai. Invertibility of Sobolev mappings under minimal hypotheses. Annales de l'I.H.P. Analyse non linéaire, Tome 27 (2010) pp. 517-528. doi : 10.1016/j.anihpc.2009.09.010. http://gdmltest.u-ga.fr/item/AIHPC_2010__27_2_517_0/
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