TY - JOUR
T1 - Covered by lines and Conic connected varieties
JF - Le Matematiche 66 (2011) 137-151
Y1 - 2011
A1 - Simone Marchesi
A1 - Alex Massarenti
A1 - Saeed Tafazolian
AB - We study some properties of an embedded variety covered by lines and give a\\r\\nnumerical criterion ensuring the existence of a singular conic through two of\\r\\nits general points. We show that our criterion is sharp. Conic-connected,\\r\\ncovered by lines, QEL, LQEL, prime Fano, defective, and dual defective\\r\\nvarieties are closely related. We study some relations between the above\\r\\nmentioned classes of objects using celebrated results by Ein and Zak.
PB - Universita\\\' di Catania, Dipartimento di Matematica e Informatica
UR - http://hdl.handle.net/1963/5788
U1 - 5641
U2 - Mathematics
U3 - Mathematical Physics
U4 - -1
ER -