Rationality of secondary classes

Details Rationality of secondary classes Rationality of secondary classes

1994-07-19

arxiv.org/abs/dg-ga/9407007v1

Mathematics

Differential Geometry

Scientific paper

We prove the Bloch conjecture : $ c_2(E) \in H^4_\cald (X,\bbz(2))$ is torsion for holomorphic rank two vector bundles $E$ with an integrable connection over a complex projective variety $X$. We prove also the rationality of the Chern-Simons invariant of compact arithmetic hyperbolic three-manifolds. We give a sharp higher-dimensional Milnor inequality for the volume regulator of all representations to $PSO(1,n)$ of fundamental groups of compact $n$-dimensional hyperbolic manifolds, announced in our earlier paper.

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