## Brazilian Journal of Probability and Statistics

### Hausdorff dimension of visible sets for well-behaved continuum percolation in the hyperbolic plane

Christoph Thäle

#### Abstract

Let ${\mathcal{Z}}$ be a so-called well-behaved percolation, that is, a certain random closed set in the hyperbolic plane, whose law is invariant under all isometries; for example, the covered region in a Poisson Boolean model. In terms of the $\alpha$-value of ${\mathcal{Z}}$, the Hausdorff-dimension of the set of directions is determined in which visibility from a fixed point to the ideal boundary of the hyperbolic plane is possible within ${\mathcal{Z}}$. Moreover, the Hausdorff-dimension of the set of (hyperbolic) lines through a fixed point contained in ${\mathcal{Z}}$ is calculated. Thereby several conjectures raised by Benjamini, Jonasson, Schramm and Tykesson are confirmed.

#### Article information

Source
Braz. J. Probab. Stat. Volume 28, Number 1 (2014), 73-82.

Dates
First available in Project Euclid: 5 February 2014

https://projecteuclid.org/euclid.bjps/1391611338

Digital Object Identifier
doi:10.1214/12-BJPS194

Mathematical Reviews number (MathSciNet)
MR3165429

Zentralblatt MATH identifier
1293.60094

#### Citation

Thäle, Christoph. Hausdorff dimension of visible sets for well-behaved continuum percolation in the hyperbolic plane. Braz. J. Probab. Stat. 28 (2014), no. 1, 73--82. doi:10.1214/12-BJPS194. https://projecteuclid.org/euclid.bjps/1391611338.

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