Abstract
The tension field of a map into a Riemannian manifold is the equivalent to the Laplacian of a function. However in contrast to the latter, the tension field is given by a nonlinear differential operator. Nevertheless, it permits an extension of a well-known Trudinger inequality that involves an Orlicz space for a function with exponential growth.
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Moser, R. A Trudinger type inequality for maps into a Riemannian manifold. Ann Glob Anal Geom 35, 83–90 (2009). https://doi.org/10.1007/s10455-008-9123-y
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DOI: https://doi.org/10.1007/s10455-008-9123-y