Balogh, ZoltanZoltanBaloghIseli, AnninaAnninaIseli2024-10-082024-10-082018-09https://boris-portal.unibe.ch/handle/20.500.12422/63504We establish Marstrand-type projection theorems for orthogonal projections along geodesics onto m-dimensional subspaces of the hyperbolic n-space by a geometric argument. Moreover, we obtain a Besicovitch-Federer type characterization of purely unrectifiable sets in terms of these hyperbolic orthogonal projections.en500 - Science::510 - Mathematicsarticle10.7892/boris.12548710.1007/s00013-018-1252-3