Published online by Cambridge University Press: 24 October 2008
In the geometry of the cubic curve Γ in space, we have to study the quadrics Q which stand in certain special relations to the curve. We shall find it convenient to refer to these relations as A, B, B′, C, C′; these are defined below.
* Associated complex-lines were mentioned in a footnote in my paper ‘On Simplexea doubly incident with a quadric,’ Proc. Camb. Phil. Soc. Vol. 22 (1925), p. 662Google Scholar. I stated there, however, that they are conjugate lines in respect of all circumscribed and inscribed quadrics of the cubic carve. This is easily shewn to be incorrect.