Abstract Based on data from the European banking stress tests of 2014, 2016 and transparency exercise 2018 we construct networks banks demonstrate that latent geometry these financial can be well-represented by negative curvature, i.e., hyperbolic geometry. Using two different embedding methods, hydra+ Mercator, this allows us to connect network structure popularity-vs-similarity model Papdopou...

This paper introduces several cellular automata in hyperbolic spaces which are able to simulate any computational device, as they are universal. We sketchily present five universal cellular automata, four of them on two grids of the hyperbolic plane and one in a grid of the hyperbolic 3D space. Key–Words: Theory of Computation, Cellular Automata, universality, hyperbolic geometry.