Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Remark on an elastic plate interacting with a gas in a semi-infinite
  tube: periodic solutions   We consider a conservative system consisting of an elastic plate interacting
with a gas filling a semi-infinite tube. The plate is placed on the bottom of
the tube. The dynamics of the gas velocity potential is governed by the linear
wave equation. The plate displacement satisfies the linear Kirchhoff equation.
We show that this system possesses an infinite number of periodic solutions
with the frequencies tending to infinity. This means that the well-known
property of decaying of local wave energy in tube domains does not hold for the
system considered.

9
The categories of this paper are: nlin
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The categories of this paper are: eess
12
The categories of this paper are: nucl-th
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
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The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex