Saccheri’s Rectilinear Quadrilaterals
Por Camilo Arcaya • 19 ago, 2013 • Sección: OpinionProdromos Filippidis
Abstract: We study Saccheri’s three hypotheses on a two right-angled isosceles quadrilateral, with a rectilinear summit side. We claim that in the Hilbert`s foundation of geometry the euclidean parallelism is a theorem and as that it can be used, in the hyperbolic geometry
arXiv:1308.2419v1 [math.HO]
