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Maximal regularity in exponentially weighted Lebesgue spaces of the Stokes operator in unbounded cylinders

  • Myong-Hwan Ri and Reinhard Farwig EMAIL logo
Published/Copyright: July 8, 2015

Abstract

We study resolvent estimates and maximal regularity of the Stokes operator in Lq-spaces with exponential weights in the axial directions of unbounded cylinders of ℝn, n ≥ 3. For a straight cylinder we use exponential weights in the axial direction and Muckenhoupt weights in the cross-section. Next, for cylinders with several exits to infinity we prove that the Stokes operator in Lq-spaces with exponential weights generates an exponentially decaying analytic semigroup and has maximal regularity. The proof for straight cylinders uses an operator-valued Fourier multiplier theorem and unconditional Schauder decompositions based on the ℛ-boundedness of the family of solution operators for a system in the cross-section of the cylinder parametrized by the phase variable of the one-dimensional partial Fourier transform. For general cylinders we use cut-off techniques based on the result for straight cylinders and the case without exponential weight.

Funding source: 2012 CAS-TWAS Postdoctoral Fellowship

Award Identifier / Grant number: 3240267229

Funding source: CAS (Chinese Academy of Sciences)

Funding source: TWAS (The World Academy of Sciences)

The first author is grateful to Professor Ping Zhang for inviting him and CAS (Chinese Academy of Sciences) and TWAS (The World Academy of Sciences) for financial support.

Received: 2014-11-14
Accepted: 2015-7-1
Published Online: 2015-7-8
Published in Print: 2015-8-1

© 2015 by De Gruyter

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