Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Steady Prandtl Boundary Layer Expansions   In this paper, we consider the zero-viscosity limit of the 2D steady
Navier-Stokes equations in $(0,L)\times\mathbb{R}^+$ with non-slip boundary
conditions. By estimating the stream-function of the remainder, we justify the
validity of the Prandtl boundary layer expansions.

35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
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The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin