ABSTRACT
In the previous chapter, we characterized a derivable net combinatorially within a three-dimensional projective geometry. However, this representa tion does not provide algebraic or geometric information in the sense that it still does not answer the question of whether or not a derivable net is connected to a regulus net. In this chapter, we use the projective space chacterization combined with the induced collineation group of the deriv able net to more fully understand the nature of the net.
