Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ordinary differential equations with only entire solutions   We prove necessary and sufficient conditions for a system $\dot
z_i=z_ip_i(z)$ ($p_i$ a polynomial) to have only entire analytic functions as
solutions.

19
The categories of this paper are: eess
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio