2 ms·
Is the Poincaré disk, a compact hyperbolic 2-d manifold. A space with negative curvature and maximal symmetry, the equivalent of a sphere but with negative curv
by pa7x1 3y ago
Is the Poincaré disk, a compact hyperbolic 2-d manifold. A space with negative curvature and maximal symmetry, the equivalent of a sphere but with negative curvature if you will.
You may have seen something similar in holography and AdS/CFT context. Or in an Escher painting.