Chennai Mathematical Institute


12 noon, Lecture Hall B
Torelli-Tate type theorem for elliptic surfaces

C.S. Rajan
TIFR, Mumbai.


Given two stable elliptic surfaces over a base curve $C$, we show that any compatible family of effective isometries of the Neron-Severi lattices of the base changed elliptic surfaces for all finite maps $B\to C$ arises from an isomorphism of the elliptic surfaces upto a finite base change.