Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Regularity and Energy Conservation for the Compressible Euler Equations   We give sufficient conditions on the regularity of solutions to the
inhomogeneous incompressible Euler and the compressible isentropic Euler
systems in order for the energy to be conserved. Our strategy relies on
commutator estimates similar to those employed by P. Constantin et al. for the
homogeneous incompressible Euler equations.

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The categories of this paper are: ao-sci
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The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
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The categories of this paper are: acc-phys
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The categories of this paper are: cond-mat
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The categories of this paper are: q-fin
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The categories of this paper are: nucl-th
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The categories of this paper are: patt-sol
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The categories of this paper are: solv-int
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The categories of this paper are: gr-qc
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The categories of this paper are: atom-ph
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The categories of this paper are: supr-con
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The categories of this paper are: eess
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The categories of this paper are: astro-ph
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The categories of this paper are: nlin