Minimizers of anisotropic perimeters with cylindrical norms

We study various regularity properties of minimizers of the $Φ$--perimeter, where $Φ$ is a norm. Under suitable assumptions on $Φ$ and on the dimension of the ambient space, we prove that the boundary of a cartesian minimizer is locally a Lipschitz graph out of a closed singular set of small Hausdorff dimension. Moreover, we show the following anisotropic Bernstein-type result: any entire cartesian minimizer is the subgraph of a monotone function depending only on one variable.

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