2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/64250We prove a formula of Dale Peterson comparing genus zero Gromov-Witten invariants of $G/P$ to those of $G/B$ using results of Atiyah-Bott and Ramanathan on canonical reductions of principal bundles.9 pages. This version has sign and typo corrections, and a small gap in the proof filledAlgebraic GeometrySymplectic Geometrytext