Geometry of the Complex Pojective Line

J.C. Álvarez Paiva

In this chapter we study the action of the group $PGL(2,{\Bbb C})$ on the complex projective line.

Notes

• Anything preceded by a * may be left for a second reading.

• Next to the exercises there is a two-digit number in parentheses which describes its degree of difficulty. The simplest exercises are identified by a (00), while the hardest -- those that could take you a week of intensive brain work -- are identified by a (50).