Blow-ups and Fano manifolds of large pseudoindex


  • Carla Novelli



We describe the Kleiman-Mori cones of Fano manifolds of large pseudoindex that admit a structure of smooth blow-up.


Andreatta, M., Chierici, E., and Occhetta, G., Generalized Mukai conjecture for special Fano varieties, Cent. Eur. J. Math. 2 (2004), no. 2, 272–293.

Andreatta, M. and Occhetta, G., Special rays in the Mori cone of a projective variety, Nagoya Math. J. 168 (2002), 127–137.

Andreatta, M. and Occhetta, G., Fano manifolds with long extremal rays, Asian J. Math. 9 (2005), no. 4, 523–543.

Beltrametti, M. C., Sommese, A. J., and Wiśniewski, J. A., Results on varieties with many lines and their applications to adjunction theory, in “Complex algebraic varieties (Bayreuth, 1990)'', Lecture Notes in Math., vol. 1507, Springer, Berlin, 1992, pp. 16--38.

Bonavero, L., Casagrande, C., Debarre, O., and Druel, S., Sur une conjecture de Mukai, Comment. Math. Helv. 78 (2003), no. 3, 601–626.

Campana, F., Coréduction algébrique d'un espace analytique faiblement Kählérien compact, Invent. Math. 63 (1981), no. 2, 187–223.

Chierici, E. and Occhetta, G., The cone of curves of Fano varieties of coindex four, Internat. J. Math. 17 (2006), no. 10, 1195–1221.

Chierici, E. and Occhetta, G., Fano manifolds and blow-ups of low-dimensional subvarieties, J. Korean Math. Soc. 47 (2010), no. 1, 189–213.

Cho, K., Miyaoka, Y., and Shepherd-Barron, N. I., Characterizations of projective space and applications to complex symplectic manifolds, in “Higher dimensional birational geometry (Kyoto, 1997)'', Adv. Stud. Pure Math., vol. 35, Math. Soc. Japan, Tokyo, 2002, pp. 1--88.

Kobayashi, S. and Ochiai, T., Characterizations of complex projective spaces and hyperquadrics, J. Math. Kyoto Univ. 13 (1973), 31–47.

Kollár, J., Rational curves on algebraic varieties, Ergebnisse der Mathematik und ihrer Grenzgebiete. 3. Folge., vol. 32, Springer-Verlag, Berlin, 1996.

Kollár, J., Miyaoka, Y., and Mori, S., Rational connectedness and boundedness of Fano manifolds, J. Differential Geom. 36 (1992), no. 3, 765–779.

Mori, S., Projective manifolds with ample tangent bundles, Ann. of Math. (2) 110 (1979), no. 3, 593–606.

Mukai, S., Problems on characterization of the complex projective space, in “Birational geometry of algebraic varieties: open problems” (Mori, S., Kollár, J., Mukai, S., and Miyaoka, Y., eds.), The 23rd International Symposium, August 22-27, 1988, Katata, Division of Mathematics, The Taniguichi Foundation, 1988, pp. 57--60.

Novelli, C., On Fano manifolds with an unsplit dominating family of rational curves, Kodai Math. J. 35 (2012), no. 3, 425–438.

Novelli, C., On Fano manifolds of large pseudoindex, J. Algebra 449 (2016), 138–162.

Novelli, C. and Occhetta, G., Ruled Fano fivefolds of index two, Indiana Univ. Math. J. 56 (2007), no. 1, 207–241.

Novelli, C. and Occhetta, G., Rational curves and bounds on the Picard number of Fano manifolds, Geom. Dedicata 147 (2010), 207–217.

Novelli, C. and Occhetta, G., Manifolds covered by lines and extremal rays, Canad. Math. Bull. 55 (2012), no. 4, 799–814.

Occhetta, G., A characterization of products of projective spaces, Canad. Math. Bull. 49 (2006), no. 2, 270–280.

Wiśniewski, J. A., On a conjecture of Mukai, Manuscripta Math. 68 (1990), no. 2, 135–141.

Wiśniewski, J. A., On contractions of extremal rays of Fano manifolds, J. Reine Angew. Math. 417 (1991), 141–157.



How to Cite

Novelli, C. (2019). Blow-ups and Fano manifolds of large pseudoindex. MATHEMATICA SCANDINAVICA, 124(1), 34–50.