Abstract
The main purpose of this paper is to show that OADP varieties stand at an important crossroad of various main streets in different disciplines like projective geometry, birational geometry and algebra. This is a good reason for studying and classifying them. Main specific results are: (a) the classification of all OADP surfaces (regardless to their smoothness); (b) the classification of a relevant class of normal OADP varieties of any dimension, which includes interesting examples like lagrangian grassmannians. Following Pirio and Russo (Comm Math Helv, to appear), the equivalence of the classification in (b) with the one of quadro-quadric Cremona transformations and of complex, unitary, cubic Jordan algebras are explained.
Similar content being viewed by others
References
Bronowski J. The sum of powers as canonical expressions. Proc Cam Phil Soc, 1932, 29: 69–82
Bruno A, Verra A. On quadro-quadric Cremona transformations of ℙ4. Preprint 2009
Chiantini L, Ciliberto C. Weakly defective varieties. Trans Amer Math Soc, 2002, 354: 151–178
Ciliberto C, Lopez A, Miranda R. Some remarks on the obstructedness of cones over curves of low genus. In: Higher dimensional complex varieties, Proceedings Trento 1994. Berlin: De Gruyter, 1996, 167–182
Ciliberto C, Mella M, Russo F. Varieties with one apparent double point, J Algebraic Geom, 2004, 13: 475–512
Ciliberto C, Russo F. Varieties with minimal secant degree and linear systems of maximal dimension on surfaces. Adv Math, 2006, 200: 1–50
Ciliberto C, Russo F, Simis A. Homaloidal hypersurfaces and hypersurfaces with vanishing Hessian. Adv Math, 2008, 218: 1759–1805
Ciliberto C, Sernesi E. Singularities of the theta divisor and congruences of planes. J Algebraic Geom, 1992, 1: 231–250
del Pezzo P. Sugli spazi tangenti a una superficie o a una varietà immersa in uno spazio a pi’ u dimensioni. Rend Acc Napoli, 1886, 25: 176–180
Ein L. Varieties with small dual variety, I. Invent Math, 1986, 86: 63–74
Ein L, Shepherd-Barron N. Some special Cremona transformations. Amer J Math, 1989, 111: 783–800
Fujita T. Classification of projective varieties of Δ-genus one. Proc Japan Acad Ser A Math Sci, 1982, 58: 113–116
Fujita T. Projective varieties of Δ-genus one. In: Algebraic and topological theories. Tokyo: Kinokunia, 1986, 149–175
Griffiths P, Harris J. Algebraic geometry and local differential geometry. Ann Scient Ec Norm Sup, 1979, 12: 355–432
Harris J. Algebraic geometry. Graduate Texts in Math, 133. New York: Springer-Verlag, 1992
Ionescu P, Russo F. Varieties with quadratic entry locus II. Compos Math, 2008, 144: 949–962
Lazarsfeld R, van de Ven A. Topics in the geometry of projective space. DMV Seminar 4. Boston: Birkhäuser, 1984
Mc Crimmon K. A Taste of Jordan Algebras. Universitext. Berlin: Springer-Verlag, 2004
Mukai S. Simple Lie algebra and Legendre variety. preprint, 1998, http://www.math.nagoya-u.ac.jp/~mukai
Pan I, Ronga F, Vust T. Transformations birationelles quadratiques de l’espace projectif complexe à trois dimensions. Ann Inst Fourier Grenoble, 2001, 51: 1153–1187
Pirio L, Russo F. On projective varieties n-covered by curves of degree δ. Comm Math Helv, in press
Pirio L, Russo F. Extremal varieties 3-rationally connected by cubics, quadro-quadric Cremona transformations and cubic Jordan algebras. In preparation, 2010
Rogora E. Varieties with many lines. Manuscripta Math, 1994, 82: 207–226
Russo F. On a theorem of Severi. Math Ann, 2000, 316: 1–17
Semple J G. Cremona Transformations of Space of Four Dimensions by means of Quadrics, and the Reverse Transformations. Philosophical Transactions of the Royal Society of London, Ser A, 1929, 228: 331–376
Severi F. Intorno ai punti doppi impropri di una superficie generale dello spazio a quattro dimensioni e ai suoi punti tripli apparenti. Rend Circ Mat Palermo, 1901, 15: 33–51
Violo M G. Varietà con un punto doppio apparente. Tesi di Dottorato, Torino, 1997
Zak F L. Varieties of small codimension arising from group actions. Addendum to: [17]
Author information
Authors and Affiliations
Corresponding author
Additional information
To Professor F. Catanese on the Occasion of his 60th Birthday
Rights and permissions
About this article
Cite this article
Ciliberto, C., Russo, F. On the classification of OADP varieties. Sci. China Math. 54, 1561–1575 (2011). https://doi.org/10.1007/s11425-010-4164-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11425-010-4164-7