Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Time-frequency analysis on groups   Phase-space analysis or time-frequency analysis can be thought as Fourier
analysis simultaneously both in time and in frequency, originating from signal
processing and quantum mechanics. On groups having unitary Fourier transform,
we introduce and study a natural family of time-frequency transforms, and
investigate the related pseudo-differential operators.

18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
1
The categories of this paper are: cs