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On the stationary Oseen equations in exterior domains

초록/요약

In this thesis, we study the stationary Oseen system (O) and rotating Oseen system (RO) on exterior smooth domains in R^3. The systems are linearized versions of the stationary Navier-Stokes flows on exterior domains. Our main results are the existence and uniqueness of weak and very weak solutions of the two systems satisfying appropriate estimates. We first prove the uniqueness of very weak solutions. Then existence results for very weak solutions of (O) and (RO) are deduced by a duality argument from our existence results for strong solutions of (O) and (RO), respectively. Using these results, we finally establish the complete D^{1,r}-results for weak solutions of the two systems, where 4/3 < r < 4. Here D^{1,r} is the homogeneous Sobolev space.

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