Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Beurling's Theorem and $L^p-L^q$ Morgan's Theorem for Step Two Nilpotent
  Lie Groups   We prove Beurling's theorem and $L^p-L^q$ Morgan's theorem for step two
nilpotent Lie groups

30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex