In this paper, we propose a numerical approach for the derivation of a stable approximation in L \(^\infty\)-norm of a solution to div(Y) = f for \(f\in L^2\) in two dimensions. The derivation of this result is based on preliminary stability results in Fourier approximationtheory that are interesting by themselves. Numerical simulation sustain the proof of the theorem.
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Bourgain J., Brezis H. (2002). On the equation div(Y) =f and application to control of phases. J. A.M.S. 16(2): 393–426
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Maday, Y. L∞-Stable Approximation of a Solution to Div(Y) = f for \(f\in L^2\) in Two Dimensions. J Sci Comput 28, 451–458 (2006). https://doi.org/10.1007/s10915-006-9073-0
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DOI: https://doi.org/10.1007/s10915-006-9073-0