Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Signal analysis and quantum formalism: Quantizations with no Planck
  constant   Signal analysis is built upon various resolutions of the identity in signal
vector spaces, e.g. Fourier, Gabor, wavelets, etc. Similar resolutions are used
as quantizers of functions or distributions, paving the way to a time-frequency
or time-scale quantum formalism and revealing interesting or unexpected
features. Extensions to classical electromagnetism viewed as a quantum theory
for waves and not for photons are mentioned.

28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph