Actions de groupes de Schottky sur les variétés homogènes-rationnelles

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Date(s) - 16/05/2017
11 h 00 min - 12 h 00 min

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We systematically study Schottky group actions on homogeneous rational manifolds and find two new families besides those given by Nori’s well-known construction. This yields new examples of non-Kähler compact complex manifolds having free fundamental groups. We then investigate their analytic and geometric invariants such as the Kodaira and algebraic dimension, the Picard group and the deformation theory, thus extending results due to Lárusson and to Seade and Verjovsky. As a byproduct, we see that the Schottky construction allows to recover examples of equivariant compactifications of SL(2, C)/Γ for Γ a discrete free loxodromic subgroup of SL(2, C), previously obtained by A. Guillot. (Travail commun avec CHRISTIAN MIEBACH, Calais)

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