I need to change my nickname. I think it is not a problem!

anyway: I'm going to study the second part of the paper about rational scroll. you can find it there:

Rational scrolls paper by Miles Reid

it's not so easy at all but I need to do. Tomorrow I'm starting the new classes:
Logic 3: Model Theory and Lambda Calculus
Math. Analisys 8: Dynamical systems
Informatic 2: I don't now what we are going to talk about. Is an easy class...
Algebra 6: An Introduction to Categories and universal algebra.

see you later!