Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Morphology of Urban Agglomerations for Developing Countries: A Case
  Study with China   In this article, the relationship between two well-accepted empirical
propositions regarding the distribution of population in cities, namely,
Gibrat's law and Zipf's law, are rigorously examined using the Chinese census
data. Our findings are quite in contrast with the most of the previous studies
performed exclusively for developed countries. This motivates us to build a
general environment to explain the morphology of urban agglomerations both in
developed and developing countries. A dynamic process of job creation generates
a particular distribution for the urban agglomerations and introduction of
Special Economic Zones (SEZ) in this abstract environment shows that the
empirical observations are in good agreement with the proposed model.

4
The categories of this paper are: cond-mat
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys