Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optical integration of a real-valued function by measurement of a Stokes
  Parameter   We experimentally implement an optical algorithm for integration of a
real-valued bivariate func- tion. A user-defined function is encoded in the
position-dependent phase of one of the polarization components of an optical
beam. The integral of this function is retrieved by measuring a Stokes
parameter of the polarization. We analyze the performance of the system as an
integration device.

10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con