Nombres de Betti des surfaces elliptiques réelles

Abstract : We prove a new bound for the number of connected components of a real regular elliptic surface with a real section and we show the sharpness of this bound. Furthermore, all possible values for the Betti numbers of such a surface are realized.
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Mouadh Akriche, Frédéric Mangolte. Nombres de Betti des surfaces elliptiques réelles. Beitraege Zur Algebra Und Geometrie, 2008, 49, pp.153-164. ⟨hal-00022310v2⟩

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