Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On Fenchel-Nielsen Coordinates of Surface Group Representations into
  SU(3,1)   Let $\Sigma_g$ be a compact, connected, orientable surface of genus $g \geq
2$. We ask for a parametrization of the discrete, faithful, totally loxodromic
representations in the deformation space ${\rm Hom}(\pi_1(\Sigma_g), {\rm
SU}(3,1))/{\rm SU}(3,1)$. We show that such a representation, under some
hypothesis, can be determined by $30g-30$ real parameters.

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The categories of this paper are: eess
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The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
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The categories of this paper are: q-fin
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The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
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The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
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The categories of this paper are: acc-phys
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The categories of this paper are: ao-sci
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The categories of this paper are: econ
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The categories of this paper are: alg-geom