Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A symmetrization of the relativistic Euler equations in several spatial
  variables   We consider the Euler equations governing relativistic compressible fluids
evolving in the Minkowski spacetime with several spatial variables. We propose
a new symmetrization which makes sense for solutions containing vacuum states
and, for instance, applies to the case of compactly supported solutions, which
are important to model star dynamics. Then, relying on these symmetrization and
assuming that the velocity does not exceed some threshold and remains bounded
away from the light speed, we deduce a local-in-time existence result for
solutions containing vacuum states. We also observe that the support of
compactly supported solutions does not expand as time evolves.

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The categories of this paper are: astro-ph
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The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
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The categories of this paper are: econ
9
The categories of this paper are: nlin
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con