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A Note on Div-Curl Lemma

Gala, Sadek — 2007

Serdica Mathematical Journal

2000 Mathematics Subject Classification: 42B30, 46E35, 35B65. We prove two results concerning the div-curl lemma without assuming any sort of exact cancellation, namely the divergence and curl need not be zero, and d i v ( u v ) H 1 ( R d ) which include as a particular case, the result of [3].

Uniqueness of weak solutions of the Navier-Stokes equations

Sadek Gala — 2008

Applications of Mathematics

Consider the Navier-Stokes equation with the initial data a L σ 2 ( d ) . Let u and v be two weak solutions with the same initial value a . If u satisfies the usual energy inequality and if v L 2 ( ( 0 , T ) ; X ˙ 1 ( d ) d ) where X ˙ 1 ( d ) is the multiplier space, then we have u = v .

Logarithmically improved blow-up criterion for smooth solutions to the Leray- α -magnetohydrodynamic equations

Ines Ben OmraneSadek GalaJae-Myoung KimMaria Alessandra Ragusa — 2019

Archivum Mathematicum

In this paper, the Cauchy problem for the 3 D Leray- α -MHD model is investigated. We obtain the logarithmically improved blow-up criterion of smooth solutions for the Leray- α -MHD model in terms of the magnetic field B only in the framework of homogeneous Besov space with negative index.

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