KTH/SU Mathematics Colloquium
06-11-08
Edoardo Sernesi, University of Rome 3
Focal loci of a family
I will introduce the notion of focal point of a family of projective
varieties, used in classical projective differential geometry and I
will give some applications of it. In particular I will show how it
can be applied to the study of the theta divisor of the jacobian
variety of a Riemann surface.