Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: NLO parton showers and subtractive techniques   Motivated by asking how to combine parton showers with nonleading QCD matrix
elements, we discuss a subtractive technique based on gauge-invariant
Wilson-line operators and how this can be used to treat the soft region.

10
The categories of this paper are: q-bio
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The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
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The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
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The categories of this paper are: hep-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: eess
37
The categories of this paper are: supr-con
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The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th