I was thrown out of college for cheating on the metaphysics exam;
I looked into the soul of the boy sitting next to me.

Woody Allen

Andrea Petracci

Student of mathematics
Dipartimento di Matematica
Università di Pisa
e-mail: petracci[at]mail[dot]dm[dot]unipi[dot]it

Some photos: Empire, Forcoli, Guggeinheim, Orange bath, Oslo, Urinals, Urban whirl.
Some videos: Klein Four Group - Finite simple group of order two.
Some useful links: Pete L. Clark, Commutative Algebra; Ravi Vakil, Foundations of algebraic geometry.