Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The solution of complex problems on calculation of the electrostatic
  fields on lessons on computer modeling   In article the following tasks on computer modeling of electric fields are
analyzed: 1) calculation of distribution of potential for the field created by
two parallel plates and charged bodies in the non-uniform environment; 2)
calculation of distribution of potential and force lines of electric field in
which are brought the cylinder, a pipe, a plate, a rectangular parallelepiped
from dielectric, and also the metal cylinder; 3) calculation of distribution of
potential in the one-dimensional nonuniform environment; 4) the solution of the
equation of Poisson in spherical coordinates; 5) calculation of distribution of
potential in cylindrical coordinates with the subsequent creation of
equipotential surfaces and force lines.

4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex