2 research outputs found
Morse coding for a Fuchsian group of a finite covolume
We consider the Morse coding of the geodesic flow on the hyperbolic plane
with respect to a Dirichlet fundamental domain of a Fuchsian group
. The main theorem states that the codes of all the generic geodesics
constitute a -step topological Markov chain, if and only if the fundamental
domain is an ideal polygon (i.e. has all of its vertices on the absolute).Comment: 11 pages, 4 figure
Biological Earth observation with animal sensors
Space-based tracking technology using low-cost miniature tags is now delivering data on fine-scale animal movement at near-global scale. Linked with remotely sensed environmental data, this offers a biological lens on habitat integrity and connectivity for conservation and human health; a global network of animal sentinels of environmen-tal change