EN
In the present paper we give a new proof of the Caffarelli-Kohn-Nirenberg theorem based on a direct approach. Given a pair (u,p) of suitable weak solutions to the Navier-Stokes equations in ℝ³ × ]0,∞[ the velocity field u satisfies the following property of partial regularity: The velocity u is Lipschitz continuous in a neighbourhood of a point (x₀,t₀) ∈ Ω × ]0,∞ [ if
$lim sup_{R→0⁺} 1/R ∫_{Q_R(x₀,t₀)} |curl u × u/|u| |² dx dt ≤ ε_{*}$
for a sufficiently small $ε_{*} > 0$.