Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Note on Maximal Averages in the Plane   Using variants of the TT* method we give a self-contained proof of the result
of Alfonseca, Soria and Vargas on maximal operators on arbitrary directions in
$\rr^2$. We also give a sharp $L^2$ estimate for a maximal function extending a
Theorem of Cordoba.

24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics