Abstract
In this paper the author writes a simple characterization for the best copositive approximation in c; the space of convergent sequences, by elements of finite dimensional Chebyshev subspaces and shows that it is unique.
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Kamal, A. On copositive approximation in some classical spaces of sequences. Anal. Theory Appl. 19, 136–144 (2003). https://doi.org/10.1007/BF02835238
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DOI: https://doi.org/10.1007/BF02835238