Hermitian vector bundles and extension groups
(Un exposé de Klaus Kunnemann au séminaire de
théorie des nombres de Chevaleret le 17 novembre 2003)
Résumé :
We define arithmetic extension groups, compute these groups in
certain cases and introduce heights of extensions over arithmetic
curves.
We investigate classes of natural extensions in arithmetic geometry: The
Hodge and the Atiyah extension.
This is joint work with J. B. Bost.