Points lie on lines, lines include points, and points and lines have Cartesan point and line products {incidence structure} {incidence relation}. Projective geometry preserves incidence structure. Incidence structure is independent of intermediacy.
Mathematical Sciences>Geometry>Kinds>Projective Geometry
3-Geometry-Kinds-Projective Geometry
Outline of Knowledge Database Home Page
Description of Outline of Knowledge Database
Date Modified: 2022.0224