Approximation, regularity and positivity preservation on Riemannian manifolds

Stefano Pigola, Daniele Valtorta, Giona Veronelli

The paper focuses on the $L^p$-Positivity Preservation property ($L^p$-PP for short) on a Riemannian manifold $(M,g)$. It states that any $L^p$ function $u$ with $1<p<+\infty$,…