Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Photon Structure in Photon Proton Interactions   Photoproduction of jets at HERA provides information on the partonic
structure of the photon. We report on the latest dijet photoproduction results,
for real photons and for photons at low virtualities, measured with the ZEUS
detector.

35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
1
The categories of this paper are: cs
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg