Ceva’s and Menelaus’ theorems in projective-metric spaces
@article{Kurusa2019CevasAM, title={Ceva’s and Menelaus’ theorems in projective-metric spaces}, author={{\'A}rp{\'a}d Kurusa}, journal={Journal of Geometry}, year={2019}, volume={110}, pages={1-12} }
AbstractWe prove that Ceva’s and Menelaus’ theorems are valid in a projective-metric space if and only if the space is any of the elliptic geometry, the hyperbolic geometry, or the Minkowski geometries.
3 Citations
On Menelaus' and Ceva's theorems in Nil geometry
- Mathematics
- 2021
In this paper we deal with Nil geometry, which is one of the homogeneous Thurston 3-geometries. We define the “surface of a geodesic triangle” using generalized Apollonius surfaces. Moreover, we show…
Classical Notions and Problems in Thurston Geometries
- Mathematics
- 2022
Of the Thurston geometries, those with constant curvature geometries (Euclidean E3, hyperbolic H3, spherical S3) have been extensively studied, but the other five geometries, H2×R, S2×R, Nil, S̃L2R,…
Apollonius Surfaces, Circumscribed Spheres of Tetrahedra, Menelaus’s and Ceva’s Theorems in S2 × R and H2 × R Geometries
- MathematicsThe Quarterly Journal of Mathematics
- 2021
In the present paper we study $\mathbf{S}^2\!\times\!\mathbf{R}$ and $\mathbf{H}^2\!\times\!\mathbf{R}$ geometries, which are homogeneous Thurston 3-geometries. We define and determine the…
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