Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Discrete Fractional Solutions of a Physical Differential Equation via $
  \nabla $-DFC Operator   Discrete mathematics, the study of finite structures, is one of the fastest
growing areas in mathematics and optimization. Discrete fractional calculus
(DFC) theory that is an important subject of the fractional calculus includes
the difference of fractional order. In present paper, we mention the radial
Schr{\"o}dinger equation which is a physical and singular differential
equation. And, we can obtain the particular solutions of this equation by
applying nabla ($ \nabla $) discrete fractional operator. This operator gives
successful results for the singular equations, and solutions have fractional
forms including discrete shift operator $ E $.

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The categories of this paper are: econ
10
The categories of this paper are: q-bio
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The categories of this paper are: atom-ph
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The categories of this paper are: solv-int
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The categories of this paper are: hep-th
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The categories of this paper are: adap-org
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The categories of this paper are: hep-lat
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The categories of this paper are: gr-qc
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The categories of this paper are: funct-an
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The categories of this paper are: cmp-lg
1
The categories of this paper are: cs
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The categories of this paper are: q-alg
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The categories of this paper are: dg-ga
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The categories of this paper are: acc-phys
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The categories of this paper are: comp-gas
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The categories of this paper are: nucl-th