2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/62857We prove that the Leray spectral sequence in rational cohomology for the quotient map $U_{n,d} \to U_{n,d}/G$ where $U_{n,d}$ is the affine variety of equations for smooth hypersurfaces of degree $d$ in $\PP^n(\C)$ and $G$ is the general linear group, degenerates at $E_2$.14 pages revised some typosAlgebraic Geometry14D20, 14J70text