Elliptope

\( \text{The set of } (x,y,z) \in \mathbb{R}^3 \text{ for which all eigenvalues of } \begin{bmatrix} 1 & x & y \\ x & 1 & z \\ y & z & 1 \end{bmatrix} \text{ are nonnegative.} \)

Click here to see a version with holes.
Click here to see a few of Amir Ali Ahmadi's Generalized Ellipsoids.

\(\text{Click on “Render" to regenerate the elliptope.}\)

\(\text{Click on “Toggle Stereo" to show a splay-eyed stereoscopic view}\).

Resolution: Render Toggle Stereo