,Hyperbolic band topology with non-trivial second Chern numbers | Nature Communications,⊕ = ⊕ M. A hyperbolic triangle ∆abc in the Möbius gyrovector plane D = | Download Scientific Diagram,PDF] Non-Euclidean Triangle Centers | Semantic Scholar,Amazon | Hyperbolic Triangle Centers: The Special Relativistic Approach (Fundamental Theories of Physics, 166) | Ungar, A.A. | Mathematical Physics