preprint

Inserted: 6 oct 2026

Year: 2026

Abstract:

We consider a family of non-local and non-convex functionals depending on three real parameters $(γ,p,λ)$, which was introduced by H. Brezis, A. Seeger, J. Van Schaftingen and P. L. Yung. In the case $γ<-p$ we prove a lower bound for the Gamma-liminf of these functionals as $λ\to 0^+$ and a Poincaré-type inequality. We also show that such inequality cannot hold if $γ>0$, and we establish a modified version in this case. These results answer some open questions posed by these authors and by H. M. Nguyen.