Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Efficient Nonlinear Beamformer Based on P^{th} Root of Detected
  Signals for Linear-Array Photoacoustic Tomography: Application to Sentinel
  Lymph Node Imaging
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs