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On the regularizing effect of the vorticity direction in incompressible viscous flows. (English) Zbl 1014.35072

The paper deals with the global existence in time of strong solutions to the 3D Navier-Stokes equations. When the direction of the vorticity belongs to some suitable Sobolev spaces, then supposing the existence of a weak solution, the existence of a unique smooth solution of the Cauchy problem for the Navier-Stokes equations is proved.

MSC:

35Q30 Navier-Stokes equations
76D03 Existence, uniqueness, and regularity theory for incompressible viscous fluids
35B65 Smoothness and regularity of solutions to PDEs
76D17 Viscous vortex flows