Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Beyond Complex Langevin Equations: positive representation of a class of
  complex measures   A positive representation for a set of complex densities is constructed. In
particular, complex measures on a direct product of U(1) groups are studied.
After identifying general conditions which such representations should satisfy,
several explicit realizations are proposed. Their utility is illustrated in few
concrete examples representing problems in abelian lattice gauge theories.

12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
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The categories of this paper are: patt-sol
2
The categories of this paper are: math
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
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The categories of this paper are: quant-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin