Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Isogeometric finite element analysis of time-harmonic exterior acoustic
  scattering problems   We present an isogeometric analysis of time-harmonic exterior acoustic
problems. The infinite space is truncated by a fictitious boundary and (simple)
absorbing boundary conditions are applied. The truncation error is included in
the exact solution so that the reported error is an indicator of the
performance of the isogeometric analysis, in particular of the related
pollution error. Numerical results performed with high-order basis functions
(third or fourth orders) showed no visible pollution error even for very high
frequencies. This property combined with exact geometrical representation makes
isogeometric analysis a very promising platform to solve high-frequency
acoustic problems.

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The categories of this paper are: nucl-th
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The categories of this paper are: hep-ex
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The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
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The categories of this paper are: stat
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The categories of this paper are: supr-con
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The categories of this paper are: dg-ga
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The categories of this paper are: eess
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The categories of this paper are: hep-th
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The categories of this paper are: chem-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: chao-dyn
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The categories of this paper are: funct-an
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The categories of this paper are: solv-int
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The categories of this paper are: quant-ph
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The categories of this paper are: nucl-ex