Extension of Privaloff’s theorem to ultraspherical expansions

Fryant, Allan J.

doi:10.1090/S0002-9939-1978-0481900-1

Extension of Privaloff’s theorem to ultraspherical expansions
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by Allan J. Fryant PDF

Proc. Amer. Math. Soc. 71 (1978), 49-53 Request permission

Abstract:

Privaloff’s theorem which relates the boundary continuity of $\operatorname {Re} (f)$ to that of f, f analytic on a disk, is extended to ultraspherical expansions.

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