This docment contains the notes handed out at a tutorial given at Siggraph in 2002. (It is a revision of the notes for a simiar tutorial in 2001). Several chapters are reprints of earlier papers and other chapters are rough drafts of new material. The document represents a checkpoint of my understanding of the topic at that time, but is a bit dated given more recent work on the subject. It is, however, the only documentation on some of these results. I am in actively engaged in updating and revising it.
Particular errata:
The chapter on the Theorem of Pappus actually refers to Pascal's Theorem (I always get those names confused)
