Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Lifting Bell inequalities   A Bell inequality defined for a specific experimental configuration can
always be extended to a situation involving more observers, measurement
settings or measurement outcomes. In this article, such "liftings" of Bell
inequalities are studied. It is shown that if the original inequality defines a
facet of the polytope of local joint outcome probabilities then the lifted one
also defines a facet of the more complex polytope.

37
The categories of this paper are: supr-con
2
The categories of this paper are: math
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga