Singularities of orbit closures in module varieties and cones over rational normal curves

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/75928Let $N$ be a point of an orbit closure $\bar{O_M}$ in a module variety such that its orbit $O_N$ has codimension two in $\bar{O_M}$. We show that under some additional conditions the pointed variety $(\bar{O_M},N)$ is smoothly equivalent to a cone over a rational normal curve.19 pagesAlgebraic GeometryRepresentation Theory14L30 (Primary) 14B05, 16G10, 16G20 (Secondary)Singularities of orbit closures in module varieties and cones over rational normal curvestext