Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Positive Polynomials on closed boxes   We present two different proofs that positive polynomials on closed boxes of
$\mathbb{R}^2$ can be written as bivariate Bernstein polynomials with strictly
positive coefficients. Both strategies can be extended to prove the analogous
result for polynomials that are positive on closed boxes of $\mathbb{R}^n$,
$n>2$.

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The categories of this paper are: hep-th
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The categories of this paper are: math-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: acc-phys
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The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
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The categories of this paper are: econ
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The categories of this paper are: chem-ph
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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: physics
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The categories of this paper are: dg-ga
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The categories of this paper are: alg-geom
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The categories of this paper are: stat
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-ex