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Let $u_0\in C_0^5 ( B_{R_0})$ be divergence-free and suppose that $u$ is astrong solution of the three-dimensional incompressible Navier-Stokes equationson $[0,T]$ in the whole space $\mathbb{R}^3$ such that $\| u \|_{L^\infty((0,T);H^5 (\mathbb{R}^3 ))} + \| u \|_{L^\infty ((0,T);W^{5,\infty}(\mathbb{R}^3 ))} \leq M <\infty$. We show that then there exists a uniquestrong solution $w$ to the problem posed on $B_R$ with the homogeneousDirichlet boundary conditions, with the same initial data and on the same timeinterval for $R\geq \max(1+R_0, C(a) C(M)^{1/a} \exp ({CM^4T/a})) )$ for any$a\in [0,3/2)$, and we give quantitative estimates on $u-w$ and thecorresponding pressure functions.

Quantitative transfer of regularity of the incompressible Navier-Stokes equations from $\mathbb{R}^3$ to the case of a bounded domain