Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Critical curves of plane Poiseuille flow with slip boundary conditions   We investigate the linear stability of plane Poiseuille flow in 2D under slip
boundary conditions. The slip s is defined by the tangential velocity at the
wall in units of the maximal flow velocity. As it turns out, the critical
Reynolds number depends smoothly on s but increases quite rapidly.

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The categories of this paper are: astro-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: econ
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The categories of this paper are: mtrl-th
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The categories of this paper are: funct-an
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The categories of this paper are: cond-mat
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The categories of this paper are: cmp-lg
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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: q-bio
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The categories of this paper are: cs
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The categories of this paper are: hep-th
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The categories of this paper are: supr-con
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The categories of this paper are: eess
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The categories of this paper are: solv-int
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The categories of this paper are: acc-phys