Abstract.
It is well known that the Helmholtz decomposition of Lq-spaces fails to exist for certain unbounded smooth planar domains unless q = 2, see [2], [9]. As recently shown [6], the Helmholtz projection does exist for general unbounded domains of uniform C2-type in \({\mathbb{R}^{3}}\) if we replace the space Lq, 1 < q < ∞, by L2 ∩ Lq for q > 2 and by Lq + L2 for 1 < q < 2. In this paper, we generalize this new approach from the three-dimensional case to the n-dimensional case, n ≥ 2. By these means it is possible to define the Stokes operator in arbitrary unbounded domains of uniform C2-type.
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Received: 15 February 2006
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Farwig, R., Kozono, H. & Sohr, H. On the Helmholtz decomposition in general unbounded domains. Arch. Math. 88, 239–248 (2007). https://doi.org/10.1007/s00013-006-1910-8
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DOI: https://doi.org/10.1007/s00013-006-1910-8