Results 51 to 60 of about 3,089 (88)

The John-Nirenberg Inequality and a Sobolev Inequality in General Domains

open access: yesJournal of Mathematical Analysis and Applications, 1993
The classical John-Nirenberg lemma [\textit{F. John} and \textit{L. Nirenberg}, Commun. Pure Appl. Math. 14, 415-426 (1961; Zbl 0102.043)] states that if the mean oscillation of a function \(u\) in a cube \(D\) is uniformly bounded in each subcube, parallel to \(D\), then the oscillation of \(u\) is exponentially integrable in \(D\); more precisely, \[
openaire   +2 more sources

Good-λ Inequalities, Rearrangements, and the John-Nirenberg Theorem

open access: yesJournal of Mathematical Analysis and Applications, 1993
The goal of this work is to prove an integral inequality of the form \[ {1 \over | Q_ 0 |} \int_{Q_ 0} \left | f(x)-{1 \over | Q_ 0 |} \int_{Q_ 0} f\right |^ pdx \leq C{1 \over | Q_ 0 |} \int_{Q_ 0} \left | f(x)-{1 \over | Q_ 0 |} \int_{Q_ 0} f \right | dx, \] for \(Q_ 0\) a cube in \(\mathbb{R}^ n\), with a constant \(C\) that does not depend on the ...
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The Hardy–Morrey & Hardy–John–Nirenberg inequalities involving distance to the boundary

open access: yesJournal of Differential Equations, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Filippas, Stathis, Psaradakis, Georgios
openaire   +1 more source

John–Nirenberg Inequalities for Noncommutative Column BMO and Lipschitz Martingales

open access: yesCommunications in Mathematical Physics
In this paper, we continue the study of John-Nirenberg theorems for BMO/Lipschitz spaces in the noncommutative martingale setting. As conjectured from the classical case, a desired noncommutative ``stopping time" argument was discovered to obtain the distribution function inequality form of John-Nirenberg theorem.
Guixiang Hong, Congbian Ma, Yu Wang
openaire   +3 more sources

Quantitative John--Nirenberg inequality for stochastic processes of bounded mean oscillation

open access: yes, 2022
Stroock and Varadhan in 1997 and Geiss in 2005 independently introduced stochastic processes with bounded mean oscillation (BMO) and established their exponential integrability with some unspecified exponential constant. This result is an analogue of the John--Nirenberg inequality for functions of bounded mean oscillation. In this work, we quantify the
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Self-Improving Properties of John–Nirenberg and Poincaré Inequalities on Spaces of Homogeneous Type

open access: yesJournal of Functional Analysis, 1998
The authors consider inequalities of the form \[ \underset{\mu(B)}\bot \int_B| f-f_B| d\mu\leq ca(B)\quad\text{and} \quad \underset{\mu(B)}\bot \int_B | f-f_B| d\mu\leq cb(B,f). \] In either case \(\mu\) is a measure and \(\mu(B)\) denotes the \(\mu\)-measure of \(B\).
Franchi, Bruno   +2 more
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A sharp symmetric integral form of the John–Nirenberg inequality

open access: yesProceedings of the American Mathematical Society
We find sharp constants in the symmetric integral form of the John–Nirenberg inequality. The result is based upon the computation of a new interesting Bellman function.
openaire   +2 more sources

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