Results 21 to 30 of about 3,650 (244)

Invertibility and Fredholm Property of Fock Toeplitz Operators

open access: yesMathematics, 2023
We characterize some necessary and sufficient conditions of invertible Toeplitz operators acting on the Fock space. In particular, we study the Fredholm properties of Toeplitz operators with BMO1 symbols, where their Berezin transforms are bounded ...
Chunxu Xu, Tao Yu
doaj   +1 more source

Commutators of Hardy-Littlewood operators on p-adic function spaces with variable exponents

open access: yesOpen Mathematics, 2023
In this article, we obtain some sufficient conditions for the boundedness of commutators of pp-adic Hardy-Littlewood operators with symbols in central bounded mean oscillation space and Lipschitz space on the pp-adic function spaces with variable ...
Dung Kieu Huu, Thuy Pham Thi Kim
doaj   +1 more source

Characterizations of Bounded Mean Oscillation [PDF]

open access: yesProceedings of the American Mathematical Society, 1975
Recall that an integrable function f f on a cube
openaire   +2 more sources

On the equivalence between weak BMO and the space of derivatives of the Zygmund class

open access: yesDemonstratio Mathematica, 2021
In this paper, we will discuss the space of functions of weak bounded mean oscillation. In particular, we will show that this space is the dual space of the special atom space, whose dual space was already known to be the space of derivative of functions
Kwessi Eddy
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

Random series and bounded mean oscillation. [PDF]

open access: yesMichigan Mathematical Journal, 1985
It has long been known that if \(\sum | a_ n ...
openaire   +2 more sources

Image Restoration Models Based on Dyadic Hardy Space and Dyadic Bounded Mean Oscillation Space

open access: yesIEEE Access, 2019
Texture is widely existed in various images and plays an important role in many area such as medical image diagnosis, remote sensing, etc. However, the image in texture regions is tend to be deteriorated during restoration process.
Tao Zhang, Xutao Mo
doaj   +1 more source

Stability and boundedness of regular solutions for a Sisko flow in an infinite annular porous space

open access: yesResults in Physics, 2023
The present article is intended to study the boundedness of solutions for an unsteady non-Newtonian flow, whose strain–stress relationship is provided by the Sisko fluid model.
José Luis Díaz Palencia   +3 more
doaj   +1 more source

Asymptotic Profile for Diffusion Wave Terms of the Compressible Navier–Stokes–Korteweg System

open access: yesMathematics, 2021
The asymptotic profile for diffusion wave terms of solutions to the compressible Navier–Stokes–Korteweg system is studied on R2. The diffusion wave with time-decay estimate was studied by Hoff and Zumbrun (1995, 1997), Kobayashi and Shibata (2002), and ...
Takayuki Kobayashi   +2 more
doaj   +1 more source

Some unsolved problems on meromorphic functions of uniformly bounded characteristic

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1985
The family UBC(R) of meromorphic functions of uniformly bounded characteristic in a Rieman surface R is defined in terms of the Shimizu-Ahlfors characteristic function.
Shinji Yamashita
doaj   +1 more source

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