On the 0-dimensional irreducible components of the singular locus of $\Cal A

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/71791In this short note we give a characterization of extremal principally polarized abelian varieties determining an isolated point in $Sing \Cal A_g$. The case $g=5$ is treated with detail.Algebraic Geometry14K10, 14K22On the 0-dimensional irreducible components of the singular locus of $\Cal A_g$text