Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: New models of income distribution, graduation as the explanation of Gini
  coefficient   The paper covers the new model of wage distribution in typical group of
people. The model provides the opportunity to reparameterize applicable income
distribution model: Pareto, logarithmically normal, logarithmically logistic,
Dagum etc. The model ensures the graduation of Gini index values by polynomial
degree of wage distribution as well as different types of income distribution.
The given approach clarifies the nature of income inequality.

26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga