scholarly journals On the boundedness of the fractional maximal operator on global Orlicz-Morrey spaces

2021 ◽  
Vol 101 (1) ◽  
pp. 17-24
Author(s):  
N.А. Bokayev ◽  
◽  
А.А. Khairkulova ◽  
Keyword(s):  
Characteristic Function ◽  
Maximal Operator ◽  
Sufficient Conditions ◽  
Morrey Spaces ◽  
Boundedness Condition ◽  
Fractional Maximal Operator

The article deals with the global Orlia-Morrey spaces GMΦ,ϕ,θ(Rn). We find sufficient conditions on pairs of functions (ϕ, η) and (Φ, Ψ), which ensure the boundedness of the fractional maximal operator Mα from GMΦ,ϕ,θ(Rn) in GMΨ,η,θ(Rn). It is proved that under some additional conditions on the function ϕ, the conditions obtained are also necessary. In the proof, the boundedness condition is essentially used, the maximal Hardy-Littlewood functions and the estimate of the norm of the characteristic function in global Orlicz-Morrey spaces are used.

scholarly journals Necessary and Sufficient Conditions for the Boundedness of Dunkl-Type Fractional Maximal Operator in the Dunkl-Type Morrey Spaces

2010 ◽  
Vol 2010 ◽  
pp. 1-10
Author(s):  
Emin Guliyev ◽  
Ahmet Eroglu ◽  
Yagub Mammadov
Keyword(s):  
Maximal Operator ◽  
Morrey Space ◽  
Sufficient Conditions ◽  
Morrey Spaces ◽  
Necessary And Sufficient Conditions ◽  
Dunkl Operator ◽  
Generalized Shift Operator ◽  
Fractional Maximal Operator ◽  
Generalized Shift ◽  
Necessary And Sufficient

We consider the generalized shift operator, associated with the Dunkl operator , . We study the boundedness of the Dunkl-type fractional maximal operator in the Dunkl-type Morrey space , . We obtain necessary and sufficient conditions on the parameters for the boundedness , from the spaces to the spaces , , and from the spaces to the weak spaces , . As an application of this result, we get the boundedness of from the Dunkl-type Besov-Morrey spaces to the spaces , , , , , and .

scholarly journals Necessary and sufficient conditions for the boundedness of the anisotropic Riesz potential in anisotropic modified Morrey spaces

2013 ◽  
Vol 21 (2) ◽  
pp. 111-130
Author(s):  
Malik S. Dzhabrailov ◽  
Sevinc Z. Khaligova
Keyword(s):  
Maximal Operator ◽  
Morrey Space ◽  
Riesz Potential ◽  
Sufficient Conditions ◽  
Morrey Spaces ◽  
Potential Operator ◽  
Fractional Maximal Operator ◽  
Riesz Potential Operator ◽  
Necessary And Sufficient ◽  
Limiting Case

Abstract We prove that the anisotropic fractional maximal operator Mα,σ and the anisotropic Riesz potential operator Iα,σ, 0 < α < ∣σ∣ are bounded from the anisotropic modified Morrey space L̃1,b,σ(Rn) to the weak anisotropic modified Morrey space WL̃q,b,σ(Rn) if and only if, α/|σ|≤1-1/q≤α/(|σ|(1-b)) and from L̃p,b,σ(Rn) to L̃q,b,σ(Rn) if and only if, α/|σ| ≤ 1/p-1/q≤α ((1-b) |σ|). In the limiting case we prove that the operator Mα,σ is bounded from L̃p,b,σ(Rn) to L∞ (Rn) and the modified anisotropic Riesz potential operator Ĩα,σ is bounded from L̃p,b,σ(Rn) to BMOσ(Rn).

New Proofs of Two-Weight Norm Inequalities for the Maximal Operator

2000 ◽  
Vol 7 (1) ◽  
pp. 33-42 ◽  
Author(s):  
D. Cruz-Uribe
Keyword(s):  
Maximal Operator ◽  
Sufficient Conditions ◽  
Norm Inequality ◽  
Strong Type ◽  
Norm Inequalities ◽  
Fractional Maximal Operator ◽  
Littlewood Maximal Operator

Abstract We give a new and simpler proof of Sawyer's theorem characterizing the weights governing the two-weight, strong-type norm inequality for the Hardy-Littlewood maximal operator and the fractional maximal operator. As a further application of our techniques, we give new proofs of two sufficient conditions for such weights due to Wheeden and Sawyer.

scholarly journals Some Embeddings into the Morrey and Modified Morrey Spaces Associated with the Dunkl Operator

2010 ◽  
Vol 2010 ◽  
pp. 1-10 ◽  
Author(s):  
Emin V. Guliyev ◽  
Yagub Y. Mammadov
Keyword(s):  
Maximal Operator ◽  
Morrey Space ◽  
Shift Operator ◽  
Morrey Spaces ◽  
Dunkl Operator ◽  
Generalized Shift Operator ◽  
Fractional Maximal Operator ◽  
Generalized Shift

We consider the generalized shift operator, associated with the Dunkl operatorΛα(f)(x)=(d/dx)f(x)+((2α+1)/x)((f(x)-f(-x))/2),α>-1/2. We study some embeddings into the Morrey space (D-Morrey space)Lp,λ,α,0≤λ<2α+2and modified Morrey space (modifiedD-Morrey space)L̃p,λ,αassociated with the Dunkl operator onℝ. As applications we get boundedness of the fractional maximal operatorMβ,0≤β<2α+2, associated with the Dunkl operator (fractionalD-maximal operator) from the spacesLp,λ,αtoL∞(ℝ)forp=(2α+2-λ)/βand from the spacesL̃p,λ,α(ℝ)toL∞(ℝ)for(2α+2-λ)/β≤p≤(2α+2)/β.

scholarly journals Parabolic Fractional Maximal Operator in Modified Parabolic Morrey Spaces

2012 ◽  
Vol 2012 ◽  
pp. 1-20
Author(s):  
Vagif S. Guliyev ◽  
Kamala R. Rahimova
Keyword(s):  
Maximal Operator ◽  
Morrey Space ◽  
Morrey Spaces ◽  
Reverse Hölder Class ◽  
Fractional Maximal Operator ◽  
Hölder Class ◽  
Holder Class ◽  
Homogeneous Dimension ◽  
Reverse Hölder ◽  
Limiting Case

We prove that the parabolic fractional maximal operatorMαP,0≤α<γ, is bounded from the modified parabolic Morrey spaceM̃1,λ,P(ℝn)to the weak modified parabolic Morrey spaceWM̃q,λ,P(ℝn)if and only ifα/γ≤1-1/q≤α/(γ-λ)and fromM̃p,λ,P(ℝn)toM̃q,λ,P(ℝn)if and only ifα/γ≤1/p-1/q≤α/(γ-λ). Hereγ=trPis the homogeneous dimension onℝn. In the limiting case(γ-λ)/α≤p≤γ/αwe prove that the operatorMαPis bounded fromM̃p,λ,P(ℝn)toL∞(ℝn). As an application, we prove the boundedness ofMαPfrom the parabolic Besov-modified Morrey spacesBM̃pθ,λs(ℝn)toBM̃qθ,λs(ℝn). As other applications, we establish the boundedness of some Schrödinger-ype operators on modified parabolic Morrey spaces related to certain nonnegative potentials belonging to the reverse Hölder class.

Vanishing generalized Orlicz--Morrey spaces and fractional maximal operator

2017 ◽  
Vol 90 (1-2) ◽  
pp. 125-147 ◽  
Author(s):  
Fatih Deringoz ◽  
Vagif S. Guliyev ◽  
Stefan Samko
Keyword(s):  
Maximal Operator ◽  
Morrey Spaces ◽  
Fractional Maximal Operator
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