Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Discrete $\Omega$-nets and Guichard nets   We provide a convincing discretisation of Demoulin's $\Omega$-surfaces along
with their specialisations to Guichard and isothermic surfaces with no loss of
integrable structure.

27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin