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51-XX - Geometry [MSC 2020] |
51B20 - Minkowski geometries in nonlinear incidence geometry [MSC 2020] |
51F15 - Reflection groups, reflection geometries [MSC 2020] |
51M05 - Euclidean geometries (general) and generalizations [MSC 2020] |
51M10 - Hyperbolic and elliptic geometries (general) and generalizations [MSC 2020] |
51Pxx - Classical or axiomatic geometry and physics [MSC 2020] |
53B30 - Local differential geometry of Lorentz metrics, indefinite metrics [MSC 2020] |
83Axx - Special relativity [MSC 2020] |