# About the behaviour of regular Navier-Stokes solutions near the blow-up

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1 LJLL - Laboratoire Jacques-Louis Lions

Abstract : In this paper, we present some results about blow up of regular solutions to the homogeneous incompressible Navier-Stokes system, in the case of data in the Sobolev space $\dot{H}^{s}\mathbb{R}^3$, where $\displaystyle{\frac{1}{2} < s < \frac{3}{2}} \cdotp$ Firstly, we will introduce the notion of minimal blow up Navier-Stokes solutions and show that the set of such solutions is not only nonempty but also compact in a certain sense. Secondly, we will state an uniform blow up rate for minimal Navier-Stokes solutions. The key tool is profile theory as established by P. Gérard \cite{PG}.

Mots-clés : Incompressible Navier-Stokes equation profile decomposition blow-up

Autor: Eugénie Poulon -

Fuente: https://hal.archives-ouvertes.fr/

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