Abstract
LetU be the subalgegra ofl ∞(Z) generated by the minimal functions. The collection ofU-interpolation sets is identified as the ideal of small subsets ofZ. General theorems about the relation between invariant ideals and collections ofA-interpolation sets, for subalgebrasA ofl ∞, are proven.
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Glasner, S., Weiss, B. Interpolation sets for subalgebras ofl ∞(Z). Israel J. Math. 44, 345–360 (1983). https://doi.org/10.1007/BF02761993
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DOI: https://doi.org/10.1007/BF02761993