La caractéristiqe d'Euler du complexe de Gauss-Manin.
Le problème de Schottky et la conjecture de Novikov
Line bundles on toroidal groups.
Lyapunov Exponents of Rank -Variations of Hodge Structures and Modular Embeddings
If the monodromy representation of a VHS over a hyperbolic curve stabilizes a rank two subspace, there is a single non-negative Lyapunov exponent associated with it. We derive an explicit formula using only the representation in the case when the monodromy is discrete.