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An extension of the identity Det = det. (Une extension de l’identité Det = det.) (English) Zbl 1201.35088
Summary: We study the pointwise characterization of the distributional Jacobian of $$BnV$$ maps. After recalling some basic notions, we will extend the well-known result of Müller to a more natural class of functions, using the divergence theorem to express the Jacobian as a boundary integral.

##### MSC:
 35F20 Nonlinear first-order PDEs 35B65 Smoothness and regularity of solutions to PDEs 35D30 Weak solutions to PDEs
##### Keywords:
Radon measure; distributional Jacobian; divergence theorem
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##### References:
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