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Moscow Mathematical Journal

Volume 18, Issue 3, July–September 2018  pp. 473–489.

On the Connectedness of the Singular Locus of the Moduli Space of Principally Polarized Abelian Varieties

Authors:  Sebastián Reyes-Carocca (1) and Rubí E. Rodríguez (1)
Author institution:(1) Departamento de Matemática y Estadística, Universidad de La Frontera, Avenida Francisco Salazar 01145, Casilla 54-D, Temuco, Chile


Let 𝒜g denote the moduli space of principally polarized abelian varieties of dimension g≥3. In this paper we prove the connectedness of the singular sublocus of 𝒜g consisting of those abelian varieties which possess an involution different from −id.

2010 Math. Subj. Class. 14K10, 14L30.

Keywords: Abelian varieties, Jacobian varieties, Group actions.

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