Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Lines on Calabi Yau complete intersections, mirror symmetry, and Picard
  Fuchs equations   A relation between the number of rational curves of fixed degree on Calabi
Yau threefolds and the Picard Fuchs equations, which was suggested as part of
the study of mirror symmetry, is verified in the case of complete intersection
of two cubics and lines.

9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int