Some Facts about Trigonometry and Euclidean Geometry
Coghetto, Roland
Group of Homography in Real Projective Plane
Coghetto, Roland
Circumcenter, Circumcircle and Centroid of a Triangle
Coghetto, Roland
Non-Trivial Universes and Sequences of Universes
Coghetto, Roland
Tarski Geometry Axioms. Part IV – Right Angle
Coghetto, Roland, Grabowski, Adam
Klein-Beltrami model. Part IV
Coghetto, Roland
A Case Study of Transporting Urysohn’s Lemma from Topology via Open Sets into Topology via Neighborhoods
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Duality Notions in Real Projective Plane
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Tarski Geometry Axioms – Part II
Coghetto, Roland, Grabowski, Adam
Klein-Beltrami model. Part III
Coghetto, Roland
Altitude, Orthocenter of a Triangle and Triangulation
Coghetto, Roland