Results 1 to 10 of about 36,617 (79)

Vanishing Mean Oscillation Spaces Associated with Operators Satisfying Davies-Gaffney Estimates [PDF]

open access: bronzeKyoto Journal of Mathematics, 2011
Let $(\mathcal{X}, d, \mu)$ be a metric measure space, $L$ a linear operator which has a bounded $H_\infty$ functional calculus and satisfies the Davies-Gaffney estimate, $\Phi$ a concave function on $(0,\infty)$ of critical lower type $p_\Phi^-\in(0,1]$
Liang, Yiyu, Yang, Dachun, Yuan, Wen
core   +4 more sources

Extension theorems for functions of vanishing mean oscillation [PDF]

open access: bronzePacific Journal of Mathematics, 1990
A locally integrable function is said to be of vanishing mean oscillation (VMO) if its mean oscillation over cubes in Rd converges to zero with the volume of the cubes. We establish necessary and sufficient conditions for a locally integrable function defined on a bounded measurable set of positive measure to be the restriction to that set of a VMO ...
Peter J. Holden
exaly   +6 more sources

Functions of Vanishing Mean Oscillation [PDF]

open access: bronzeTransactions of the American Mathematical Society, 1975
A function of bounded mean oscillation is said to have vanishing mean oscillation if, roughly speaking, its mean oscillation is locally small, in a uniform sense. In the present paper the class of functions of vanishing mean oscillation is characterized in several ways.
Donald Sarason
exaly   +5 more sources

Functions of vanishing mean oscillation associated with operators and applications [PDF]

open access: bronzeMichigan Mathematical Journal, 2008
The authors introduce new function spaces \(\mathbf{VMO}_L (\mathbb{R}^n)\) of vanishing mean oscillation associated with infinitesimal generators of analytic semigroups on \(L^2 (\mathbb{R}^n)\). Such spaces generalize the classical \(\mathbf{VMO}\) space. Let \(L^*\) denote the adjoint of the operator \(L\). The main result of the paper is that under
Donggao Deng   +4 more
exaly   +6 more sources

Local vanishing mean oscillation

open access: closedBulletin de la Société mathématique de France
We consider various notions of vanishing mean oscillation on a (possibly unbounded) domain $Ω\subset \mathbb{R}^n$, and prove an analogue of Sarason's theorem, giving sufficient conditions for the density of bounded Lipschitz functions in the nonhomogeneous space $\rm{vmo}(Ω)$. We also study $\rm{cmo}(Ω)$, the closure in $\rm{bmo}(Ω)$ of the continuous
Almaz Butaev, Galia Dafni
exaly   +5 more sources

Holomorphic semigroups and Sarason’s characterization of vanishing mean oscillation

open access: diamondRevista Matemática Iberoamericana, 2022
It is a classical theorem of Sarason that an analytic function of bounded mean oscillation (BMOA) is of vanishing mean oscillation if and only if its rotations converge in norm to the original function as the angle of the rotation tends to zero. In a series of two papers, Blasco et al.
Nikolaos Chalmoukis   +1 more
openalex   +5 more sources

Extreme points in spaces between Dirichlet and Vanishing Mean Oscillation [PDF]

open access: diamondBulletin of the Australian Mathematical Society, 2003
Forp∈ (0, ∞) defineQp0(∂Δ) as the space of all Lebesgue measurable complex-valued functionsf; on the unit circle ∂Δ for which ∫∂Δf;(z)|dz|/(2π) = 0 andas the open subarcIof ∂Δ varies. Note that eachQp,0(∂Δ) lies between the Dirichlet space and Sarason's vanishing mean oscillation space.
K.‐J. Wirths, J. Xiao
openalex   +2 more sources

Vanishing mean oscillation and continuity of rearrangements

open access: closedAdvances in Mathematics, 2023
We study the decreasing rearrangement of functions in VMO, and show that for rearrangeable functions, the mapping f -> f* preserves vanishing mean oscillation. Moreover, as a map on BMO, while bounded, it is not continuous, but continuity holds at points in VMO (under certain conditions).
Almut Burchard, Galia Dafni, Ryan Gibara
openalex   +4 more sources

Graphs of maps between manifolds in trace spaces and with vanishing mean oscillation

open access: bronzeAnnales de l'Institut Henri Poincaré C, Analyse non linéaire, 2013
We give a positive answer to a question raised by Alberti in connection with a recent result by Brezis and Nguyen. We show the existence of currents associated with graphs of maps in trace spaces that have vanishing mean oscillation. The degree of such maps may be written in terms of these currents, of which we give some structure properties.
E. Acerbi, Domenico Mucci
openalex   +5 more sources

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