On stability of weak Navier-Stokes solutions with large L3,∞ initial data.

Tobias Barker, Gregory Seregin, Vladimir Šverák

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10 Citations (SciVal)


We consider the Cauchy problem for the Navier–Stokes equation in ℝ3×]0,∞[ with the initial datum u0∈L3weak, a critical space containing nontrivial (−1)−homogeneous fields. For small ||u0||L3weak one can get global well-posedness by perturbation theory. When ||u0||L3weak is not small, the perturbation theory no longer applies and, very likely, the local-in-time well-posedness and uniqueness fails. One can still develop a good theory of weak solutions with the following stability property: If u(n) are weak solutions corresponding the the initial datum u(n)0, and u(n)0 converge weakly* in L3weak to u0, then a suitable subsequence of u(n) converges to a weak solution u corresponding to the initial condition u0. This is of interest even in the special case u0≡0.
Original languageEnglish
Pages (from-to)628-651
JournalCommunications in Partial Differential Equations
Issue number4
Publication statusPublished - 7 May 2018


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