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Results tagged with oc.optimization-and-control
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user 82179
Operations research, linear programming, control theory, systems theory, optimal control, game theory
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SOS polynomials with integer coefficients
There is the following result of Davenport, Lewis, and Schinzel [DLS64, Cor to Thm 2]:
Theorem. Let $p \in \mathbf Z[x]$. Then the following are equivalent:
$p$ is a sum of two squares in $\mathbf Z …
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