Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On many-sorted $\omega$-categorical theories   We prove that every many-sorted $\omega$-categorical theory is completely
interpretable in a one-sorted
  $\omega$-categorical theory. As an application, we give a short proof of the
existence of non $G$--compact $\omega$-categorical theories.

11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn