“…Two almost-up-to-date collections of results can be found in the review papers by Cannone [8] and von Wahl [32]. The solutions we find live in rather classical spaces, similar to those considered by Majda and Bertozzi [28] (mainly for the Euler equation).…”
Section: However a Virtual Lagrangian Dynamic Of The Particles Of Thsupporting
A probabilistic representation formula for general systems of linear parabolic equations, coupled only through the zero-order term, is given. On this basis, an implicit probabilistic representation for the vorticity in a three-dimensional viscous fluid (described by the Navier-Stokes equations) is carefully analysed, and a theorem of local existence and uniqueness is proved. The aim of the probabilistic representation is to provide an extension of the Lagrangian formalism from the non-viscous (Euler equations) to the viscous case. As an application, a continuation principle, similar to the Beale-Kato-Majda blow-up criterion, is proved.
“…Two almost-up-to-date collections of results can be found in the review papers by Cannone [8] and von Wahl [32]. The solutions we find live in rather classical spaces, similar to those considered by Majda and Bertozzi [28] (mainly for the Euler equation).…”
Section: However a Virtual Lagrangian Dynamic Of The Particles Of Thsupporting
A probabilistic representation formula for general systems of linear parabolic equations, coupled only through the zero-order term, is given. On this basis, an implicit probabilistic representation for the vorticity in a three-dimensional viscous fluid (described by the Navier-Stokes equations) is carefully analysed, and a theorem of local existence and uniqueness is proved. The aim of the probabilistic representation is to provide an extension of the Lagrangian formalism from the non-viscous (Euler equations) to the viscous case. As an application, a continuation principle, similar to the Beale-Kato-Majda blow-up criterion, is proved.
Abstract. In this paper we consider the regularity criteria for the weak solutions to the NavierStokes equations in R 3 . It is proved that if the gradient of any one component of the velocity field belongs to L α,γ with 2/α + 3/γ = 3/2, 3 ≤ γ < ∞, then the weak solution actually is strong.
“…We give a rather general sufficient condition for the existence of a small solution for all times, we do not require the exterior forces to be conservative, nor the boundary values to be constant, and we do not need to confine ourselves to three dimensions. (For the incompressible case see, e.g., [12]. )…”
This paper deals with the question of existence for all times of the solutions of a certain class of differential equations for small initial values, and with the asymptotic behavior of these solutions. This class of equations contains different models describing the flow of viscous compressible fluids, even under the influence of a magnetic field.
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