TY - CHAP AU - Arrondo Esteban, Enrique AU - Paoletti, Raffaella A4 - Ciliberto, C. A4 - Geramita, A.V. A4 - Harbourne, B. A4 - M. Miró-Roig, R.M. A4 - Ranestad, K. PY - 2005 SN - 978-3-11-018160-9 UR - https://hdl.handle.net/20.500.14352/53229 AB - Let G(r,m) denote the Grassmann variety of r-dimensional linear subspaces of Pm. To any linear projection Pm⇢Pm′, m′