For example if I invert both sides of
$$ \sum_{\sigma} \frac{x(x+2)}{2x^2 + 1} \geq 0$$
So that it becomes
$$\sum_{\sigma}\frac{2x^2+1}{x(x+2)} \leq 0$$
Will the inequality hold?
For example if I invert both sides of
$$ \sum_{\sigma} \frac{x(x+2)}{2x^2 + 1} \geq 0$$
So that it becomes
$$\sum_{\sigma}\frac{2x^2+1}{x(x+2)} \leq 0$$
Will the inequality hold?
Hint:
Does $x\geq 0$ imply $\dfrac{1}{x}\leq 0$?