# Weighted Sobolev spaces on metric measure spaces

created by pinamonti on 11 Jun 2014
modified on 14 Feb 2016

[BibTeX]

Accepted paper

Inserted: 11 jun 2014
Last Updated: 14 feb 2016

Journal: J. Reine Angew. Math.
Year: 2015

Abstract:

We investigate weighted Sobolev spaces on metric measure spaces $(X,d,m)$. Denoting by $\rho$ the weight function, we compare the space $W^{1,p}(X,d,\rho m)$ (which always concides with the closure $H^{1,p}(X,d,\rho m)$ of Lipschitz functions) with the weighted Sobolev spaces $W^{1,p}_\rho(X,d,m)$ and $H^{1,p}_\rho(X,d,m)$ defined as in the Euclidean theory of weighted Sobolev spaces. Under mild assumptions on the metric measure structure and on the weight we show that $W^{1,p}(X, d,\rho m)=H^{1,p}_\rho(X,d,m)$. We also adapt the results in 21 and in the recent paper 25 to the metric measure setting, considering appropriate conditions on $\rho$ that ensure the equality $W^{1,p}_\rho(X,d,m)=H^{1,p}_\rho(X,d,m)$.