Continuity Points Via Riesz Potentials for ℂ-Elliptic Operators

2020 ◽  
Vol 71 (4) ◽  
pp. 1201-1218
Author(s):  
Lars Diening ◽  
Franz Gmeineder
Keyword(s):  
Differential Operator ◽  
Arbitrary Order ◽  
Riesz Potential ◽  
Elliptic Operators ◽  
Gradient Estimates ◽  
Elliptic Differential Operator ◽  
Riesz Potentials

Abstract We establish a Riesz potential criterion for Lebesgue continuity points of functions of bounded $\mathbb{A}$-variation, where $\mathbb{A}$ is a $\mathbb{C}$-elliptic differential operator of arbitrary order. This result generalizes a potential criterion that is known for full gradients to the case where full gradient estimates are not available by virtue of Ornstein’s non-inequality.

scholarly journals B-maximal commutators, commutators of B-singular integral operators and B-Riesz potentials on B-Morrey spaces

2020 ◽  
Vol 18 (1) ◽  
pp. 715-730
Author(s):  
Javanshir J. Hasanov ◽  
Rabil Ayazoglu ◽  
Simten Bayrakci
Keyword(s):  
Differential Operator ◽  
Singular Integral ◽  
Riesz Potential ◽  
Type Theorem ◽  
Integral Operators ◽  
Morrey Spaces ◽  
Singular Integral Operators ◽  
Sobolev Type ◽  
Riesz Potentials ◽  
Bessel Differential Operator

Abstract In this article, we consider the Laplace-Bessel differential operator {\Delta }_{{B}_{k,n}}=\mathop{\sum }\limits_{i=1}^{k}\left(\frac{{\partial }^{2}}{\partial {x}_{i}^{2}}+\frac{{\gamma }_{i}}{{x}_{i}}\frac{\partial }{\partial {x}_{i}}\right)+\mathop{\sum }\limits_{i=k+1}^{n}\frac{{\partial }^{2}}{\partial {x}_{i}^{2}},{\gamma }_{1}\gt 0,\ldots ,{\gamma }_{k}\gt 0. Furthermore, we define B-maximal commutators, commutators of B-singular integral operators and B-Riesz potentials associated with the Laplace-Bessel differential operator. Moreover, we also obtain the boundedness of the B-maximal commutator {M}_{b,\gamma } and the commutator {[}b,{A}_{\gamma }] of the B-singular integral operator and Hardy-Littlewood-Sobolev-type theorem for the commutator {[}b,{I}_{\alpha ,\gamma }] of the B-Riesz potential on B-Morrey spaces {L}_{p,\lambda ,\gamma } , when b\in {\text{BMO}}_{\gamma } .

A counter-example in G-convergence of non-divergence elliptic operators

2003 ◽  
Vol 133 (6) ◽  
pp. 1299-1310 ◽  
Author(s):  
Luigi D'Onofrio ◽  
Luigi Greco
Keyword(s):  
Differential Operator ◽  
Suitable Condition ◽  
Elliptic Operators ◽  
Planar Domain ◽  
Elliptic Differential Operator ◽  
Counter Example

In a planar domain, to each function w ∈ W2,2 satisfying a suitable condition we associate a non-divergence elliptic differential operator 𝔏 such that 𝔏w = 0. For a given converging sequence {wk}, we study G-convergence of the corresponding sequence {𝔏k} of operators.

On the boundedness of a B-Riesz potential in the generalized weighted B-Morrey spaces

2016 ◽  
Vol 23 (2) ◽  
Author(s):  
Rabil Ayazoglu (Mashiyev) ◽  
Javanshir J. Hasanov
Keyword(s):  
Differential Operator ◽  
Shift Operator ◽  
Riesz Potential ◽  
Morrey Spaces ◽  
Generalized Shift Operator ◽  
Bessel Differential Operator ◽  
Generalized Shift

AbstractWe consider the generalized shift operator associated with the Laplace–Bessel differential operator

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