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- W2891832875 abstract "We are concerned with a nonlocal transport 1D-model with supercritical dissipation $gammain(0,1)$ in which the velocity is coupled via the Hilbert transform, namely the so-called CCF model. This model arises as a lower dimensional model for the famous 2D dissipative quasi-geostrophic equation and in connection with vortex-sheet problems. It is known that its solutions can blow up in finite time when $gammain(0,1/2)$. On the other hand, as stated by Kiselev (2010), in the supercritical subrange $gammainlbrack1/2,1)$ it is an open problem to know whether its solutions are globally regular. We show global existence of non-negative $H^{3/2}$-strong solutions in a supercritical subrange (close to 1) that depends on the initial data norm. Then, for each arbitrary smooth non-negative initial data, the model has a unique global smooth solution provided that $gammainlbrackgamma_{1},1)$ where $gamma_{1}$ depends on the $H^{3/2}$-initial data norm. Our approach is inspired on that of Coti Zelati and Vicol (IUMJ, 2016)." @default.
- W2891832875 created "2018-09-27" @default.
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- W2891832875 date "2018-09-12" @default.
- W2891832875 modified "2023-10-01" @default.
- W2891832875 title "Global smoothness for a 1D supercritical transport model with nonlocal velocity" @default.
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