Results 81 to 90 of about 11,985 (239)

BMO-Boundedness of Maximal Operators and g-Functions Associated with Laguerre Expansions

open access: yesJournal of Function Spaces and Applications, 2012
Let {𝜑𝛼𝑛}𝑛∈ℕ be the Laguerre functions of Hermite type with index 𝛼. These are eigenfunctions of the Laguerre differential operator 𝐿𝛼=1/2(−𝑑2/𝑑𝑦2+𝑦2+1/𝑦2(𝛼2−1/4)). In this paper, we investigate the boundedness of the Hardy-Littlewood maximal function,
Li Cha, Heping Liu
doaj   +1 more source

Local hardy and BMO spaces on non-homogeneous spaces [PDF]

open access: yesJournal of the Australian Mathematical Society, 2005
AbstractLet µ be Radon measure on Rd which may be non doubling. The only condition that µ must satisfy is the size condition µ(B(x, r)) ≤ Crn for some fixed n є (0, d). Recently, Tolsa introduced the spaces RBMO(µ) and Hatb1.∞ (µ), which, in some ways, play the role of the classical spaces BMO and H1 in case u is a doubling measure.
openaire   +2 more sources

Enhancing Photocurrent of Bismuth Manganate Photoanodes with Nanoislands of Bismuth Oxide

open access: yesChemPhotoChem, Volume 9, Issue 8, August 2025.
Bismuth manganate (BMO) thin films with bismuth oxide nanoislands, prepared via sol–gel, on fluorine‐doped tin oxide substrates, show a tenfold increase in photocurrent as compared to pristine BMO thin films. Overlayers with suitable band alignment can therefore be crucial for improving the performance of photoabsorbers like BMO.
Nitin P. Prasad   +6 more
wiley   +1 more source

Riesz potential and its commutators on Orlicz spaces

open access: yesJournal of Inequalities and Applications, 2017
In the present paper, we shall give necessary and sufficient conditions for the strong and weak boundedness of the Riesz potential operator I α $I_{\alpha}$ on Orlicz spaces. Cianchi (J. Lond. Math. Soc.
Vagif S Guliyev   +2 more
doaj   +1 more source

BMO spaces related to Laguerre semigroups

open access: yesMathematische Nachrichten, 2013
For the system of Laguerre functions we define a suitable BMO space from the atomic version of the Hardy space considered by Dziubański in , where is the maximal operator of the heat semigroup associated to that Laguerre system. We prove boundedness of over a weighted version of that BMO, and we extend such result to other systems of Laguerre ...
Harboure, Eleonor Ofelia   +1 more
openaire   +2 more sources

A Scoping Review of Choice Architecture to Promote Healthy Nutrition in Health and Care Settings

open access: yesJournal of Human Nutrition and Dietetics, Volume 38, Issue 4, August 2025.
ABSTRACT Introduction Poor diets are a remediable risk factor for non‐communicable diseases. Sickness absence rates for national health service (NHS) staff are substantially higher than the public sector average (5.6% vs. 3.6%). Hospital inpatients are often being treated for the downstream consequences of poor diets.
Victoria Bion, Grace Turner
wiley   +1 more source

Two weight estimates for a class of (p, q) type sublinear operators and their commutators

open access: yesOpen Mathematics, 2019
In the present paper, the authors investigate the two weight, weak-(p, q) type norm inequalities for a class of sublinear operators 𝓣γ and their commutators [b, 𝓣γ] on weighted Morrey and Amalgam spaces.
Yunpeng Hu, Jiang Zhou, Yonghui Cao
doaj   +1 more source

The John–Nirenberg inequality in ball Banach function spaces and application to characterization of BMO

open access: yesJournal of Inequalities and Applications, 2019
Our goal is to obtain the John–Nirenberg inequality for ball Banach function spaces X, provided that the Hardy–Littlewood maximal operator M is bounded on the associate space X′ $X'$ by using the extrapolation.
Mitsuo Izuki   +2 more
doaj   +1 more source

On the Jackson type inequality in the dyadic BMO space

open access: yesМоделирование и анализ информационных систем, 2009
In this paper the direct theorem of the approximation theory for functions from the dyadic Besov space is proved. Together with the inverse theorem, it allows to solve an interpolation problem between dyadic BMO and the dyadic Besov space.
I. P. Irodova
doaj  

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