6533b82efe1ef96bd12926d1

RESEARCH PRODUCT

A generalization of Dembowski's theorem on semi-planes

Albrecht Beutelspacher

subject

Pure mathematicsDifferential geometryGeneralizationHyperbolic geometryGeometry and TopologyAlgebraic geometryTopology (chemistry)Projective geometryMathematicshttps://doi.org/10.1007/bf01447411