Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Second order conservative languages with a Maltsev polymorphism also
  have a majority polymorphism   The paper proves that for any second order conservative constraint language
with a Maltsev polymorphism there is a majority polymorphism. Moreover, the
majority polymorphism can be defined by the Maltsev polymorphism.

30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci