On the behavior of harmonic functions near a boundary point

Ramey, Wade; Ullrich, David

doi:10.1090/S0002-9947-1988-0920155-9

On the behavior of harmonic functions near a boundary point
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Trans. Amer. Math. Soc. 305 (1988), 207-220 Request permission

Abstract:

Several results on the behavior of harmonic functions at an individual boundary point are obtained. The results apply to positive harmonic functions as well as to Poisson integrals of functions in BMO.

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