A note on Helson’s existence theorem
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- by Jun-ichi Tanaka
- Proc. Amer. Math. Soc. 69 (1978), 87-90
- DOI: https://doi.org/10.1090/S0002-9939-1978-0482594-1
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Abstract:
In the almost periodic context, Helson showed that there exists a unitary function in every simply invariant subspace. We provide a short proof of this result in more general setting and give some applications.References
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Bibliographic Information
- © Copyright 1978 American Mathematical Society
- Journal: Proc. Amer. Math. Soc. 69 (1978), 87-90
- MSC: Primary 46J10; Secondary 30H05
- DOI: https://doi.org/10.1090/S0002-9939-1978-0482594-1
- MathSciNet review: 482594