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Additional information
Tom Wolff wrote this paper in 1983 but never plublished it With the permission of Tom’s family, I have edited the paper for publication here. The mathematics is exactly as it was in Tom’s 1983 manuscript; only stylistic changes have been made. Preparation of the manuscript was supported by NSF Grant DMS-0070782.
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Wolff, T.H. Counterexamples to two variants of the Helson-Szegö theorem. J. Anal. Math. 88, 41–62 (2002). https://doi.org/10.1007/BF02786574
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DOI: https://doi.org/10.1007/BF02786574