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arXiv · 1201.3277

Regularity of sets with constant intrinsic normal in a class of Carnot groups

Marco Marchi
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Abstract

In this Note, we define a class of stratified Lie groups of arbitrary step (that are called ``groups of type $\star$'' throughout the paper), and we prove that, in these groups, sets with constant intrinsic normal are vertical halfspaces. As a consequence, the reduced boundary of a set of finite intrinsic perimeter in a group of type $\star$ is rectifiable in the intrinsic sense (De Giorgi's rectifiability theorem). This result extends the previous one proved by Franchi, Serapioni & Serra Cassano in step 2 groups.

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Marco Marchi. 2013-12-27. Regularity of sets with constant intrinsic normal in a class of Carnot groups. https://arxiv.org/abs/1201.3277

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