Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Floquet Operator with Pure Point Spectrum and Energy Instability   An example of Floquet operator with purely point spectrum and energy
instability is presented. In the unperturbed energy eigenbasis its
eigenfunctions are exponentially localized.

15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org