Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Some Notes on the Solutions of non Homogeneous Differential Equations   We solve some forms of non homogeneous differential equations in one and two
dimensions. By expanding the solution into whell-posed closed form-Eisenstein
series the solution itself is quite simple and elementary. Also we consider
Fourier series solutions of linear differential operator equations. In the
third section we study operators which are functions of the Leibnitz
derivative. The last result is the complete solution of a non homogenus
2-degree ODE with linear coeficients. The non homogenous part is an arbirtary
function of $L_2(\bf R\rm)$

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The categories of this paper are: cond-mat
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The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
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The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
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The categories of this paper are: hep-ph
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The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
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The categories of this paper are: astro-ph