reverse hölder inequalities
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2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Arturo Popoli

Abstract We study the higher integrability of weights satisfying a reverse Hölder inequality ( ⨏ I u β ) 1 β ≤ B ⁢ ( ⨏ I u α ) 1 α {\biggl{(}\fint_{I}u^{\beta}\biggr{)}^{\frac{1}{\beta}}}\leq B{\biggl{(}\fint_{I}u^{\alpha}\biggr{)}^{\frac{1}{\alpha}}} for some B > 1 B>1 and given α < β \alpha<\beta , in the limit cases when α ∈ { - ∞ , 0 } \alpha\in\{-\infty,0\} and/or β ∈ { 0 , + ∞ } \beta\in\{0,+\infty\} . The results apply to the Gehring and Muckenhoupt weights and their corresponding limit classes.


2020 ◽  
Vol 2020 (767) ◽  
pp. 203-230 ◽  
Author(s):  
Verena Bögelein ◽  
Frank Duzaar ◽  
Christoph Scheven

AbstractIn this paper we establish in the fast diffusion range the higher integrability of the spatial gradient of weak solutions to porous medium systems. The result comes along with an explicit reverse Hölder inequality for the gradient. The novel feature in the proof is a suitable intrinsic scaling for space-time cylinders combined with reverse Hölder inequalities and a Vitali covering argument within this geometry. The main result holds for the natural range of parameters suggested by other regularity results. Our result applies to general fast diffusion systems and includes both, non-negative and signed solutions in the case of equations. The methods of proof are purely vectorial in their structure.


Fractals ◽  
2020 ◽  
Vol 28 (08) ◽  
pp. 2040003 ◽  
Author(s):  
SAIMA RASHID ◽  
ZAKIA HAMMOUCH ◽  
DUMITRU BALEANU ◽  
YU-MING CHU

In this paper, we propose a new fractional operator which is based on the weight function for Atangana–Baleanu [Formula: see text]-fractional operators. A motivating characteristic is the generalization of classical variants within the weighted [Formula: see text]-fractional integral. We aim to establish Minkowski and reverse Hölder inequalities by employing weighted [Formula: see text]-fractional integral. The consequences demonstrate that the obtained technique is well-organized and appropriate.


2018 ◽  
Vol 11 (04) ◽  
pp. 444-455 ◽  
Author(s):  
A. A. El-Deeb ◽  
H. A. Elsennary ◽  
Wing-Sum Cheung

2017 ◽  
Vol 2017 ◽  
pp. 1-12
Author(s):  
Na Wei ◽  
Xiangyu Ge ◽  
Yonghong Wu ◽  
Leina Zhao

This paper is devoted to the Lp estimates for weak solutions to nonlinear degenerate parabolic systems related to Hörmander’s vector fields. The reverse Hölder inequalities for degenerate parabolic system under the controllable growth conditions and natural growth conditions are established, respectively, and an important multiplicative inequality is proved; finally, we obtain the Lp estimates for the weak solutions by combining the results of Gianazza and the Caccioppoli inequality.


2016 ◽  
pp. 1-10
Author(s):  
Eleftherios N. Nikolidakis ◽  
Antonios D. Melas

2015 ◽  
Vol 280 ◽  
pp. 643-689 ◽  
Author(s):  
Wei-Kuo Chen ◽  
Nikos Dafnis ◽  
Grigoris Paouris

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