Curvature and Gauss-Bonnet defect of global affine hypersurfaces

Dirk Siersma , Mihai Tibar (1)

1 LPP - Laboratoire Paul Painlevé - UMR 8524

The total curvature of complex hypersurfaces in $\bC^{n+1}$ and its variation in families appear to depend not only on singularities but also on the behaviour in the neighbourhood of infinity. We find the asymptotic loss of total curvature towards infinity and we express the total curvature and the Gauss-Bonnet defect in terms of singularities and tangencies at infinity.

Domaines: Géométrie différentielle [math.DG]; Géométrie algébrique [math.AG]; Variables complexes [math.CV]

Dirk Siersma, Mihai Tibar. Curvature and Gauss-Bonnet defect of global affine hypersurfaces. Bulletin des Sciences Mathématiques, 2006, 130, pp.110-122. ⟨hal-00117676⟩