Classification of general absolute geometries with Lambert-Saccheri quadrangles
oleh: Helmut Karzel, Mario Marchi
| Format: | Article |
|---|---|
| Diterbitkan: | Università degli Studi di Catania 2006-10-01 |
Deskripsi
Without claiming any kind of continuity we show that an absolute geometry has either a singular, a hyperbolic or an elliptic congruence,