Solution to system of quadratic equations, graphical polytop ? Reference?

I am looking for image that represents the undetermonistic nature of the solution to system of quadratic equation , a polytop.

This talk at https://vimeo.com/135256368 at minute 20

Better quality of this image basically

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Please explain. What do you mean by “undetermonistic”? What does a polytope have to do with a system of quadratic equations?
– Robert Israel
Oct 20 at 21:27

  

 

A real valued quadratic equation have two solutions that can lie on two planes (basically +/-) a system of quadratic equations have solution on one of the vertices of polytop but we dont know which one it is. So in general it is considered NP hard problem to solve a system of quadratic equations. The polytop above is supposed to represent that
– Anonymous
Oct 20 at 21:31

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