TY - JOUR
T1 - Symmetrized and non-symmetrized asymptotic mean value Laplacian in metric measure spaces
AU - Minne, Andreas
AU - Tewodrose, David
N1 - Funding Information:
The first author is grateful for the support by the Knut and Alice Wallenberg Foundation, Project KAW 2015.0380. The second author is supported by Laboratoire de Mathématiques Jean Leray via the project Centre Henri Lebesgue and Fédération de recherche Mathématiques de Pays de Loire via the project Ambition Lebesgue Loire. The authors thank Giorgio Stefani and Luca Rizzi for pointing out reference []. They are also both grateful for precious remarks made by the anonymous referees. The second author thanks Gilles Carron for inspiring discussions and Luca Rizzi for his invitation at SISSA Trieste-funded by the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement No. 945655)—where helpful discussions took place.
Publisher Copyright:
Copyright © The Author(s), 2023. Published by Cambridge University Press on behalf of The Royal Society of Edinburgh.
PY - 2023/11/28
Y1 - 2023/11/28
N2 - The asymptotic mean value Laplacian - AMV Laplacian - extends the Laplace operator from to metric measure spaces through limits of averaging integrals. The AMV Laplacian is however not a symmetric operator in general. Therefore, we consider a symmetric version of the AMV Laplacian, and focus lies on when the symmetric and non-symmetric AMV Laplacians coincide. Besides Riemannian and 3D contact sub-Riemannian manifolds, we show that they are identical on a large class of metric measure spaces, including locally Ahlfors regular spaces with suitably vanishing distortion. In addition, we study the context of weighted domains of - where the two operators typically differ - and provide explicit formulae for these operators, including points where the weight vanishes.
AB - The asymptotic mean value Laplacian - AMV Laplacian - extends the Laplace operator from to metric measure spaces through limits of averaging integrals. The AMV Laplacian is however not a symmetric operator in general. Therefore, we consider a symmetric version of the AMV Laplacian, and focus lies on when the symmetric and non-symmetric AMV Laplacians coincide. Besides Riemannian and 3D contact sub-Riemannian manifolds, we show that they are identical on a large class of metric measure spaces, including locally Ahlfors regular spaces with suitably vanishing distortion. In addition, we study the context of weighted domains of - where the two operators typically differ - and provide explicit formulae for these operators, including points where the weight vanishes.
UR - https://doi.org/10.1017/prm.2023.118
UR - https://www.scopus.com/pages/publications/85179462908
U2 - 10.1017/prm.2023.118
DO - 10.1017/prm.2023.118
M3 - Article
SN - 1473-7124
SN - 0308-2105
VL - 155
SP - 916
EP - 953
JO - Proceedings of the Royal Society of Edinburgh: Section A Mathematics
JF - Proceedings of the Royal Society of Edinburgh: Section A Mathematics
IS - 3
ER -