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Removable sets for homogeneous linear partial differential equations in Carnot groups

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Abstract

Let L be a homogeneous left-invariant differential operator on a Carnot group. Assume that both L and L t are hypoelliptic. We study the removable sets for L-solutions. We give precise conditions in terms of the Carnot- Caratheodory Hausdorff dimension for the removability for L-solutions under several auxiliary integrability or regularity hypotheses. In some cases, our criteria are sharp on the level of the relevant Hausdorff measure. One of the main ingredients in our proof is the use of novel local self-similar tilings in Carnot groups.

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Authors and Affiliations

  1. Department of Mathematics, University of Connecticut, Storrs, CT, 06269-3009, USA

    Vasilis Chousionis

  2. Department of Mathematics, University of Illinois, Urbana, IL, 61801, USA

    Jeremy T. Tyson

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  1. Vasilis Chousionis
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  2. Jeremy T. Tyson
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Correspondence to Vasilis Chousionis.

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JTT supported by NSF grant DMS-1201875.

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Chousionis, V., Tyson, J.T. Removable sets for homogeneous linear partial differential equations in Carnot groups. JAMA 128, 215–238 (2016). https://doi.org/10.1007/s11854-016-0007-y

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  • DOI: https://doi.org/10.1007/s11854-016-0007-y

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