Solutions To Lipschitz Variational Problems With Cohomological Spanning Conditions
2015
We prove existence and regularity of minimizers for Lipschitz integrands over general surfaces of arbitrary dimension and codimension in \( \R^n \), satisfying a cohomological boundary condition. Our result specializes to a version of Plateau's problem in the case of a constant integrand. We generalize and extend methods of Reifenberg, Besicovitch, and Adams; in particular, we prove an asymptotic monotonicity result (density exists in the absence of true monotonicity,) we generalize a type of minimizing sequence used by Reifenberg (whose limits have nice properties, including lower bounds on lower density and finite Hausdorff measure,) and develop cohomological spanning conditions.
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