Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scalar curvature, isoperimetric collapse and General Relativity in the
  Constant Mean Curvature gauge   We discuss a set of relations, set in the form of results, conjectures and
problems, between the L^{2}-norm of the Ricci curvature of a 3-manifold, the
scalar curvature and the volume radius. We illustrate the scope of these
relations with potential applications to the Einstein Constant Mean Curvature
flow (or GR seen as a geometric flow of constant mean curvature), but we
believe the framework has it own geometric interest.

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The categories of this paper are: solv-int
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-th
9
The categories of this paper are: nlin
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The categories of this paper are: q-bio
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The categories of this paper are: q-fin
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The categories of this paper are: q-alg
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The categories of this paper are: bayes-an
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The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
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The categories of this paper are: ao-sci
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The categories of this paper are: econ
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The categories of this paper are: math-ph
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The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
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The categories of this paper are: chao-dyn