Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quasineutral limit of the Euler-Poisson system for ions in a domain with
  boundaries   We study the quasineutral limit of the isothermal Euler-Poisson system
describing a plasma made of ions and massless electrons. The analysis is
achieved in a domain of $\R^3$ and thus extends former results by Cordier and
Grenier [Comm. Partial Differential Equations, 25 (2000), pp.~1099--1113], who
dealt with the same problem in a one-dimensional domain without boundary.

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The categories of this paper are: nucl-th
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The categories of this paper are: hep-lat
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The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
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The categories of this paper are: eess
30
The categories of this paper are: q-alg