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International conference "Birational and affine geometry"
April 26, 2012 14:00, Moscow, Steklov Mathematical Institute of RAS


Fundamental group of some genus-$2$ fibrations and applications

R. V. Gurjar

Tata Institute of Fundamental Research, Mumbai



Abstract: We will prove that given a genus-$2$ fibration $f\colon X \to C$ on a smooth projective surface $X$ such that $b_1(X)=b_1(C)+2$, the fundamental group of $X$ is almost isomorphic to $\pi_1(C) \times \pi_1(E)$, where $E$ is an elliptic curve. We will also verify the Shafarevich Conjecture on holomorphic convexity of the universal cover of surfaces $X$ with genus-$2$ fibration $X\to C$ such that $b_1(X)>b_1(C)$. This is joint work with Sagar Kolte.

Language: English


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