Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Hopf algebra structure of multiple harmonic sums   Multiple harmonic sums appear in the perturbative computation of various
quantities of interest in quantum field theory. In this article we introduce a
class of Hopf algebras that describe the structure of such sums, and develop
some of their properties that can be exploited in calculations.

35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex