2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/96623Let a=(p_1^{q_1}, ..., p_r^{q_r}) be a partition and a'=({p_1'}^{q_1'}, >..., {p_r'}^{q_r'}) be its conjugate. We will prove that if q_i, q_i > 1 for all i, then any irreducible subvariety X of Gr(m,n) whose homology class is an integral multiple of the Schubert class [σ_a] of type a is a Schubert variety of type a.21 pagesDifferential Geometry14C25 (Primary} 14M15 (secondary)text