Full paper in PDF:
$%J. Huisman, On the geometry of algebraic curves having many real
components,
Rev. Mat. Complut. 14 (2001), no. 1, 83–92.%$
ABSTRACT
We show that there is a large class of nonspecial effective divisors of relatively small degree on real algebraic curves having many real components, i.e., on M-curves. We apply this to
complete linear systems on M-curves containing divisors with entirely real support, and
morphisms of M-curves into 1.
2000 Mathematics Subject Classification: 14P99, 14H45, 14C20.