Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The scrollar invariants of k-gonal curves having a nodal model on a
  smooth quadric having its nodes on few lines   We determine the scrollar invariants of the normalization $C$ of a nodal
curve $\Gamma$ of type $(k,a)$ on a smooth quadric $\mathbb{P}^1 \times
\mathbb{P}^1$ associated to the $g^1_k$ defined by the pencil of lines of type
$(0,1)$ in case all nodes are contained in at most $k-1$ lines of type $(1,0)$.
This result is very much related to results obtained by E. Ballico, but in this
paper the proof follows directly from an easy lemma. Also a result of E.
Ballico on the existence of curves with prescribed scrollar invariant is a
consequence of that lemma making the arguments much shorter.

14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio