Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Graphical representation of marginal and underlying probabilities in
  quantum mechanics   Wigner's marginal probability theory is revisited, and systematically applied
to n-particle correlation measurements. A set of Bell inequalities whose
corollaries are Hardy contradiction and its generalisation are derived with
intuitive graphical analysis.

3
The categories of this paper are: physics
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom