Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Counting master integrals: Integration by parts vs. functional equations   We illustrate the usefulness of functional equations in establishing
relationships between master integrals under the integration-by-parts reduction
procedure by considering a certain two-loop propagator-type diagram as an
example.

31
The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
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The categories of this paper are: q-alg
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The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ