ABSTRACT

We have seen that any derivable net may be embedded into a projective geometry in the sense that the set of points of the net become lines of the geometry and the lines of the net become points. In this chapter, we determine the nets which can be embedded into projective geometries in this fashion: the points and lines of the net become lines and points of the geometry. In point of fact, part of the net is embedded into an affine geometry so we will be concerned with nets which can be embedded into either affine or projective geometries.