Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonexistence of extremals for the adjoint restriction inequality on the
  hyperboloid   We study the problem of existence of extremizers for the $L^2$ to $L^p$
adjoint Fourier restriction inequalities on the hyperboloid in dimensions 3 and
4, in which cases $p$ is an even integer. We will use the method developed by
Foschi to show that extremizers do not exist.

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The categories of this paper are: math-ph
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The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
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The categories of this paper are: comp-gas
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The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
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The categories of this paper are: eess
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
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The categories of this paper are: quant-ph
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The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
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The categories of this paper are: plasm-ph
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The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
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The categories of this paper are: solv-int