Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Simple Model for Faraday Waves   We show that the linear-stability analysis of the birth of Faraday waves on
the surface of a fluid is simplified considerably when the fluid container is
driven by a triangle waveform rather than by a sine wave. The calculation is
simple enough to use in an undergraduate course on fluid dynamics or nonlinear
dynamics. It is also an attractive starting point for a nonlinear analysis.

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The categories of this paper are: astro-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
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The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
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The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
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The categories of this paper are: stat
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The categories of this paper are: math
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The categories of this paper are: supr-con
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The categories of this paper are: q-fin
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-lat
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The categories of this paper are: gr-qc