Nontangential and probabilistic boundary behavior of pluriharmonic functions

Details Nontangential and probabilistic boundary behavior of pluriharmonic functions Nontangential and probabilistic boundary behavior of pluriharmonic functions

2005-11-15

arxiv.org/abs/math/0511368v2

Annals of Probability 2006, Vol. 34, No. 4, 1623-1634

Mathematics

Probability

Published at http://dx.doi.org/10.1214/009117906000000188 in the Annals of Probability (http://www.imstat.org/aop/) by the Ins

Scientific paper

10.1214/009117906000000188

Let $u$ be a pluriharmonic function on the unit ball in $\mathbb{C}^n$. I consider the relationship between the set of points $L_u$ on the boundary of the ball at which $u$ converges nontangentially and the set of points $\mathcal{L}_u$ at which $u$ converges along conditioned Brownian paths. For harmonic functions $u$ of two variables, the result $L_u\stackrel{\mathrm{a.e.}}{=}\mathcal{L}_u$ has been known for some time, as has a counterexample to the same equality for three variable harmonic functions. I extend the $L_u\stackrel{\mathrm{a.e.}}{=}\mathcal{L}_u$ result to pluriharmonic functions in arbitrary dimensions.

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