Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Definite integrals by the method of brackets. Part 1   A new heuristic method for the evaluation of definite integrals is presented.
This method of brackets has its origin in methods developed for theevaluation
of Feynman diagrams. We describe the operational rules and illustrate the
method with several examples. The method of brackets reduces the evaluation of
a large class of definite integrals to the solution of a linear system of
equations.

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The categories of this paper are: cs
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
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The categories of this paper are: hep-ph
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The categories of this paper are: adap-org
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The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
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The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
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The categories of this paper are: bayes-an
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The categories of this paper are: mtrl-th
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The categories of this paper are: alg-geom
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The categories of this paper are: ao-sci
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The categories of this paper are: nucl-ex
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The categories of this paper are: plasm-ph