Making Non-Negative Polynomials into Sums of Squares

Philipp J. di Dio

We study linear operators $T:\mathbb{R}[x_1,\dots ,x_n]\to \mathbb{R}[x_1,\dots ,x_n]$, especially for the purpose to move sets $S\subseteq \mathbb{R}[x_1,\dots ,x_n]$ into cones $C\sub…