Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Exposition of the Connection between Limit-Periodic Potentials and
  Profinite Groups   We classify the hulls of different limit-periodic potentials and show that
the hull of a limit-periodic potential is a procyclic group. We describe how
limit-periodic potentials can be generated from a procyclic group and answer
arising questions. As an expository paper, we discuss the connection between
limit-periodic potentials and profinite groups as completely as possible and
review some recent results on Schroedinger operators obtained in this context.

12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics