Old and New Topics in Geometry: Volume I: Projective, Neutral and Basic Euclidea
61,93 €
In this context, the classification of Hilbert planes into three types, ---as semi-euclidean, semi-elliptic or semi-hyperbolic, known as the uniformity theorem is a important step beyond Euclid. A further step is the introduction of the axiom of the unbounded opening of an angle.
Jetzt bei Ebay: