ON FANO MANIFOLDS OF PICARD NUMBER ONE

Laurent Manivel (1)

1 I2M - Institut de Mathématiques de Marseille

Küchle classified the Fano fourfolds that can be obtained as zero loci of global sections of homogeneous vector bundles on Grassmannians. Sur-prisingly, his classification exhibits two families of fourfolds with the same discrete invariants. Kuznetsov asked whether these two types of fourfolds are deformation equivalent. We show that the answer is positive in a very strong sense, since the two families are in fact the same! This phenomenon happens in higher dimension as well.

Domaines: Géométrie algébrique [math.AG]

Laurent Manivel. ON FANO MANIFOLDS OF PICARD NUMBER ONE. Mathematische Zeitschrift, 2015, 281 (3), pp.1129-1135. ⟨hal-01112220⟩