Article contents
Sharp conditions for the validity of the Bourgain–Brezis–Mironescu formula
Published online by Cambridge University Press: 16 April 2024
Abstract
Following the seminal paper by Bourgain, Brezis, and Mironescu, we focus on the asymptotic behaviour of some nonlocal functionals that, for each $u\in L^2(\mathbb {R}^N)$, are defined as the double integrals of weighted, squared difference quotients of $u$
. Given a family of weights $\{\rho _{\varepsilon} \}$
, $\varepsilon \in (0,\,1)$
, we devise sufficient and necessary conditions on $\{\rho _{\varepsilon} \}$
for the associated nonlocal functionals to converge as $\varepsilon \to 0$
to a variant of the Dirichlet integral. Finally, some comparison between our result and the existing literature is provided.
Keywords
MSC classification
- Type
- Research Article
- Information
- Copyright
- Copyright © The Author(s), 2024. Published by Cambridge University Press on behalf of The Royal Society of Edinburgh
References

- 1
- Cited by