Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Wild solutions for 2D incompressible ideal flow with passive tracer   In Ann. Math., 170 (2009), 1417-1436, C. De Lellis and L. Sz\'ekelyhidi Jr.
constructed wild solutions of the incompressible Euler equations using a
reformulation of the Euler equations as a differential inclusion together with
convex integration. In this article we adapt their construction to the system
consisting of adding the transport of a passive scalar to the two-dimensional
incompressible Euler equations.

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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: chem-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: atom-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: astro-ph
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The categories of this paper are: comp-gas
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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: eess
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The categories of this paper are: hep-lat
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The categories of this paper are: supr-con
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The categories of this paper are: mtrl-th
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The categories of this paper are: alg-geom
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The categories of this paper are: dg-ga