Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electromagnetic source localization with finite set of frequency
  measurements   A phase conjugation algorithm for localizing an extended radiating
electromagnetic source from boundary measurements of the electric field is
presented. Measurements are taken over a finite number of frequencies. The
artifacts related to the finite frequency data are tackled with
$l_1-$regularization blended with the fast iterative shrinkage-thresholding
algorithm with backtracking of Beck & Teboulle.

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The categories of this paper are: cond-mat
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The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
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The categories of this paper are: hep-ex
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
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The categories of this paper are: astro-ph