Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Combinatorial Aspects of the Distribution of Rough Objects   The inverse problem of general rough sets, considered by the present author
in some of her earlier papers, in one of its manifestations is essentially the
question of when an agent's view about crisp and non crisp objects over a set
of objects has a rough evolution. In this research the nature of the problem is
examined from number-theoretic and combinatorial perspectives under very few
assumptions about the nature of data and some necessary conditions are proved.

4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
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