Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Capacitance between Two Points in an Infinite Grid   The capacitance between two adjacent nodes on an infinite square grid of
identical capacitors can easily be found by superposition, and the solution is
found by explotting the symmetry of the grid. The mathematical problem
presented in this work involves the solution of an infinite set of linear,
inhomogenous difference equations which are solved by the method of separation
of variables.

35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
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The categories of this paper are: atom-ph
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The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ