Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of gamma-gamma and gamma-electron luminosities at photon
  colliders   Methods of gamma-gamma, gamma-electron luminosities measurement at photon
colliders based on Compton scattering of laser photons on high energy electrons
at linear colliders are considered.

13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph