Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Restriction estimates for the free two step nilpotent group on three
  generators   Let $G$ be the free two step nilpotent Lie group on three generators and let
$L$ be a sub-Laplacian on it. We compute the spectral resolution of $L$ and
prove that the operators arising from this decomposition enjoy a Tomas-Stein
type estimate.

25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat