Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Two Plus One Dimensional Continuous Wavelet Transform   The group $G_2$ of invertible affine transformations of $\mathbb{R}^2$ has,
up to equivalence, one square--integrable representation. Two new realizations
of this representation are presented and novel continuous wavelet transforms,
acting on functions of two plus one variables, are derived.

19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
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The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys