Abstract
Let C be a smooth curve of degree \(d_0\) lying on a smooth surface in projective space. Exploiting a criterion due to I. Reider we study when the divisors in a linear series of degree \(d \le d_0\) on C are contained in hyperplanes. For a K3 surface S with Picard group \({\mathbb {Z}}^2\) we succeed if S contains a line.
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References
Accola, R.D.M.: On Castelnuovo’s inequality for algebraic curves. I. Trans. Amer. Math. Soc. 251, 357–373 (1979)
Arbarello, E., Cornalba, M., Griffiths, P.A., Harris, J.: Geometry of Algebraic Curves. I. Springer, Berlin (1985)
Ballico, E., Keem, C., Martens, G., Ohbuchi, A.: On curves of genus eight. Math. Z. 227, 543–554 (1998)
Ciliberto, C., Lazarsfeld, R.: On the uniqueness of certain linear series on some classes of curves. In: Complete Intersections (Acireale, 1983), Lecture Notes in Math., vol. 1092, pp. 198–213. Springer, Berlin (1984)
Eisenbud, D., Lange, H., Martens, G., Schreyer, F.-O.: The Clifford dimension of a projective curve. Comput. Math. 72, 173–204 (1989)
Green, M., Lazarsfeld, R.: Special divisors on curves on a K3 surface. Invent. Math. 89, 357–370 (1987)
Hartshorne, R.: Algebraic Geometry. Graduate Texts in Mathematics, vol. 52. Springer, Berlin (1977)
Hotchkiss, J., Lau, C.C., Ullery, B.: The gonality of complete intersection curves. J. Algebra 560, 579–608 (2020)
Knutsen, A.L.: Smooth curves on projective K3 surfaces. Math. Scand. 90, 215–231 (2002)
Knutsen, A.L.: On two conjectures for curves on K3 surfaces. Int. J. Math. 20, 1547–1560 (2009)
Lange, H., Martens, G.: On the gonality sequence of an algebraic curve. Manuscr. Math. 137, 457–473 (2012)
Martens, G.: On curves on K3 surfaces. In: Algebraic Curves and Projective Geometry (Trento 1988). Lecture Notes in Mathematics 1389, pp. 174–182 (1989)
Martens, G.: Linear series computing the Clifford index of a projective curve. Abh. Math. Sem. Univ. Hamburg 76, 115–130 (2006)
Martens, G.: On curves on rational surface scrolls. Arch. Math. (Basel) 112, 489–495 (2019)
Reid, M.: Special linear systems on curves lying on a K3 surface. J. Lond. Math. Soc. 2(13), 454–458 (1976)
Reider, I.: Some applications of Bogomolov’s theorem. In: Catanese, F. (ed.) Problems in the Theory of Surfaces and their Classification. Symposia Mathematics, vol. 32, pp. 376–410. Academic Press, Cambridge (1991)
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Martens, G. On curves on K3 surfaces: III. Arch. Math. 115, 401–412 (2020). https://doi.org/10.1007/s00013-020-01496-7
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DOI: https://doi.org/10.1007/s00013-020-01496-7