Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hardy-Littlewood, Bessel-Riesz, and fractional integral operators in
  anisotropic Morrey and Campanato spaces   We analyse Morrey spaces, generalised Morrey spaces and Campanato spaces on
homogeneous groups. The boundedness of the Hardy-Littlewood maximal operator,
Bessel-Riesz operators, generalised Bessel-Riesz operators and generalised
fractional integral operators in generalised Morrey spaces on homogeneous
groups is shown. Moreover, we prove the boundedness of the modified version of
the generalised fractional integral operator and Olsen type inequalities in
Campanato spaces and generalised Morrey spaces on homogeneous groups,
respectively. Our results extend results known in the isotropic Euclidean
settings, however, some of them are new already in the standard Euclidean
cases.

9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
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The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas