Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Formal punctured ribbons and two-dimensional local fields   We investigate formal ribbons on curves. Roughly speaking, formal ribbon is a
family of locally linearly compact vector spaces on a curve. We establish a
one-to-one correspondence between formal ribbons on curves plus some geometric
data and some subspaces of two-dimensional local field.

20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an