Sharp Volume-Based Bounds for BMO Functions on Compact Domains and Applications
Abstract
We establish sharp localized Lr bounds for compactly supported functions of bounded mean oscillation (BMO). Classical estimates obtained via the John-Nirenberg inequality bound the Lr norm of such a function in terms of the diameter of its support. We show that the diameter dependence can be replaced by the Lebesgue measure of the support, the relevant quantity for thin, highly eccentric domains. The proof relies on non-increasing rearrangements and the Bennett-DeVore-Sharpley theorem, and requires no vanishing-oscillation hypothesis. We present physical and operator-theoretic applications: geometric collapse in tubular neighborhoods, a localized Cwikel-Lieb-Rozenblum bound for Schrödinger operators, and decoupling bounds for the localized action of Calderón-Zygmund singular integrals.
Related
- Bounds for the residue of Dedekind zeta functions under GRH and applications
- Regular Arithmetic Functions, Volume I. Theory, Applications, Examples
- Finite volume quotients of bounded domains with piecewise smooth boundary
- Surface-to-Volume Homogenization of NonLinear Steklov Eigencouples with NonHomogeneous Orlicz Growth in Perforated Domains
- A Comparative Study of Finite-Volume-based Coupled and Segregated Reduced-Order Models for Incompressible Flows in Parametrized Domains
BibTeX
@misc{misur2026sharp,
title = {{Sharp Volume-Based Bounds for BMO Functions on Compact Domains and Applications}},
author = {Marin Mišur},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.11467},
eprint = {2609.11467},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.11467},
note = {CC BY-NC-ND 4.0},
}
RIS
TY - UNPB
TI - Sharp Volume-Based Bounds for BMO Functions on Compact Domains and Applications
AU - Marin Mišur
PY - 2026
DA - 2026/09/10
PB - arXiv
DO - 10.48550/arxiv.2609.11467
UR - https://arxiv.org/abs/2609.11467
AB - We establish sharp localized L^r bounds for compactly supported functions of bounded mean oscillation (BMO). Classical estimates obtained via the John-Nirenberg inequality bound the L^r norm of such a function in terms of the diameter of its support. We show that the diameter dependence can be replaced by the Lebesgue measure of the support, the relevant quantity for thin, highly eccentric domains. The proof relies on non-increasing rearrangements and the Bennett-DeVore-Sharpley theorem, and requires no vanishing-oscillation hypothesis. We present physical and operator-theoretic applications: geometric collapse in tubular neighborhoods, a localized Cwikel-Lieb-Rozenblum bound for Schrödinger operators, and decoupling bounds for the localized action of Calderón-Zygmund singular integrals.
ER -