Gemetry Seminar - 6 March 2020 ,
from 15:15 to 16:15 in room D'Antoni

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Andreas Knutsen
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University of Bergen
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Moduli of polarized Enriques surfaces
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Moduli spaces of polarized Enriques surfaces have several  irreducible components, even if one fixes the degree of the polarization. I will present some results concerning these spaces. In particular I will answer a question of Gritsenko and Hulek concerning connectedness of the étale double covers from the moduli spaces of polarized Enriques surfaces to the moduli spaces of numerically polarized such surfaces, and  I will give a way to determine all irreducible components of these moduli spaces.