Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On Fell bundles over inverse semigroups and their left regular
  representations   We prove a version of Wordingham's theorem for left regular representations
in the setting of Fell bundles of inverse semigroups and use this result to
discuss the various associated cross sectional C*-algebras.

3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
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The categories of this paper are: acc-phys
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
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The categories of this paper are: ao-sci
18
The categories of this paper are: econ