Czasopismo
2001
|
Vol. 34, nr 1
|
43-50
Tytuł artykułu
Autorzy
Wybrane pełne teksty z tego czasopisma
Warianty tytułu
Języki publikacji
Abstrakty
Let Y be an integral projective curve with g := pa(Y) > 4. What is the minimal integer d such that there is a degree d non-degenerate morphism f Y - Pr? What happens if we look oniy for separable morphisms ? Assume that Y is either not Gorenstein or with oniy planar singularities. Here we give a rough classification of the cases in which d > g + r and several related examples.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
43-50
Opis fizyczny
Bibliogr. 13 poz.
Twórcy
autor
- Deparment of Mathematics University of Trento 38050 (TN), Italy, ballico@science.initn.it
Bibliografia
- [1] A. Altman and S. Kleiman , Introduction to Grothendieck duality theory, Lect. Notes in Math. 146, Springer-Verlag, 1970.
- [2] E. Ballico , On singular curves in positive characteristic, Math. Nachr. 141 (1989), 267-273.
- [3] R.-O. Buchweitz and G.-M. Greuel , The Milnor number and deformations of complex curve singularities, Invent. Math. 58 (1980), 241-281.
- [4] F. Catanese , M. Franciosi , K. Hulek and M. Reid , Embeddings of curves and surfaces, Nagoya Math. J. 154 (1999), 185-220.
- [5] E. D. Davis , On the geometric interpretation of seminormality, Proc. Amer. Math. Soc. 68 (1978), 1-5.
- [6] D. Eisenbud , J. Koh and M. Stillman , Determinantal equations for curves of high degree, Amer. J. Math. 110 (1988), 513-539.
- [7] M. Homma , Singular hyperelliptic curves, Manuscripta Math. 98 (1999), 21-36.
- [8] M. Homma , Separable gonality of a Gorenstein curve, Matematica Contempôranea 14 (1998), 71-74.
- [9] J. Rathmann , The uniform position principle for curves in characteristic p, Math. Ann. 276 (1987), 565-579.
- [10] M. Rosenlicht , Equivalence relations on algebraic curves, Ann. of Math. 56 (1952), 169-191.
- [11] J.-P. Serre , Groupes algébriques et corps des classes, Paris, Hermann, 1959.
- [12] K. O. Stöhr , On the poles of regular differentials on singular curves, Bol. Soc. Bras. Mat. 24 (1993), 105-136.
- [13] C. Traverso , Seminormality and Picard groups, Ann. Sc. Norm. Sup. 25 (1970), 287-304.
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.baztech-article-PWA1-0037-0012