Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the influence of uniform singularity distributions   Exact expressions for three-dimensional potential and force yield due to
uniform singularity distributed on a finite at rectangular surface have been
presented. The expressions, valid throughout the physical domain, have been
found to be consistent with other expressions available as special cases of the
same problem. Very accurate estimates of the capacitance of a unit square plate
and a unit cube have been made using them.

23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess