Abstract
By using an appropriate martingale, we compute the joint distribution of the hitting time and place of a sphere by $d$-dimensional Brownian motion, when the process starts outside the sphere.
Citation
C. Betz. H. Gzyl. "Hitting Spheres from the Exterior." Ann. Probab. 22 (1) 177 - 179, January, 1994. https://doi.org/10.1214/aop/1176988854
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