Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Attainability of Time-Periodic flow of a Viscous Liquid Past an
  Oscillating Body   A body $\mathscr B$ is started from rest by translational motion in an
otherwise quiescent Navier-Stokes liquid filling the whole space. We show, for
small data, that if after some time $\mathscr B$ reaches a spinless oscillatory
motion of period $\cal T$, the liquid will eventually execute also a time
periodic motion with same period $\cal T$. This problem is a suitable
generalization of the famous Finn's starting problem for steady-states, to the
case of time-periodic motions

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The categories of this paper are: patt-sol
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The categories of this paper are: nucl-th
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The categories of this paper are: q-bio
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The categories of this paper are: dg-ga
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The categories of this paper are: stat
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
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The categories of this paper are: bayes-an
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The categories of this paper are: eess
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The categories of this paper are: alg-geom
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The categories of this paper are: atom-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: supr-con
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The categories of this paper are: chao-dyn