Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Macroscopic Simulation of Isotropic Permanent Magnets   Accurate simulations of isotropic permanent magnets require to take the
magnetization process into account and consider the anisotropic, nonlinear, and
hysteretic material behaviour near the saturation configuration. An efficient
method for the solution of the magnetostatic Maxwell equations including the
description of isotropic permanent magnets is presented. The algorithm can
easily be implemented on top of existing finite element methods and does not
require a full characterization of the hysteresis of the magnetic material.
Strayfield measurements of an isotropic permanent magnet and simulation results
are in good agreement and highlight the importance of a proper description of
the isotropic material.

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The categories of this paper are: math
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The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
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The categories of this paper are: stat
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The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
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The categories of this paper are: adap-org
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The categories of this paper are: chao-dyn
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The categories of this paper are: solv-int
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The categories of this paper are: q-bio
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The categories of this paper are: bayes-an
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The categories of this paper are: funct-an
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The categories of this paper are: q-fin