Exercises and list of topics for compulsory presentation

The exercise V.1.4 in Hartshornes book (lines on a surface in P3) will be discussed next week.

In stead of a compulsory problem set to be handed in, I ask each student to give a 20 min presentation of a topic during a lecture.

Here is a start on a list of topics for compulsory presentation:

-The sheaf of differentials on a variety, and on a subvariety.

-Serre duality on a smooth curve

-Curves on P1xP1

-Linear systems of conics in the plane, and the maps that they define (describe fibers and image)

to be extended..

Kristian R