Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Harmonic polylogarithms for massive Bhabha scattering   One- and two-dimensional harmonic polylogarithms, HPLs and GPLs, appear in
calculations of multi-loop integrals. We discuss them in the context of
analytical solutions for two-loop master integrals in the case of massive
Bhabha scattering in QED. For the GPLs we discuss analytical representations,
conformal transformations, and also their transformations corresponding to
relations between master integrals in the s- and t-channel.

12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph