IJPAM: Volume 52, No. 2 (2009)
LINEAR SERIES ON RIGID STABLE CURVES
E. Ballico
Department of Mathematics
University of Trento
380 50 Povo (Trento) - Via Sommarive, 14, ITALY
e-mail: ballico@science.unitn.it
Department of Mathematics
University of Trento
380 50 Povo (Trento) - Via Sommarive, 14, ITALY
e-mail: ballico@science.unitn.it
Abstract.There is a stratification of
by the topological type of the stable curves. The zero-dimensional strata are essentially given by the union of a graph curve with tails which are rational curves with one node. Here we study their gonality (admissible coverings and (but only in degree
) Caporaso's semibalanced line bundles).
Received: February 21, 2009
AMS Subject Classification: 14H51, 14H20
Key Words and Phrases: stable curve, admissible covering, semibalanced line bundle
Source: International Journal of Pure and Applied Mathematics
ISSN: 1311-8080
Year: 2009
Volume: 52
Issue: 2