TY - JOUR AU - Gallego Rodrigo, Francisco Javier AU - Giraldo Suárez, Luis AU - Sols, Ignacio PY - 1996 DO - 10.1090/S0002-9939-96-03701-X SN - 1088-6826 UR - https://hdl.handle.net/20.500.14352/57049 T2 - Proceedings of the American Mathematical Society AB - In this paper we provide a sharp bound for the dimension of a family of ruled surfaces of degree d in P3 K. We also _nd the families with maximal dimension: the family of ruled surfaces containing two unisecant skew lines, when d _ 9 and the family of... LA - eng M2 - 2943 PB - America Mathematical Society KW - Castelnuovo bound KW - Dimension of a family of ruled surfaces KW - Irregularity KW - Ruled surfaces KW - Curve in the grassmannian TI - Bounding families of ruled surfaces TY - journal article VL - 124 ER -