Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $n$-pure submodules of modules   Let R be a commutative ring, M an R-module. In this paper, we will introduce
the concept of n-pure submodules of M as a generalization of pure submodules
and obtain some related results.

6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
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The categories of this paper are: cmp-lg
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The categories of this paper are: patt-sol
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
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The categories of this paper are: eess
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph