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4:05 AM
It seems that JOCG changed their website, the link in the post no longer works - this seems to be the new location: jocg.org/index.php/jocg/article/view/2969. (Of course, since full details are given in the answer, the paper can be easily found in many various places.) — Martin Sleziak 21 hours ago
Thanks, I have updated the link in the answer (interestingly, they only changed the number in the end). — Jan Kyncl 4 hours ago
 
 
11 hours later…
3:02 PM
9
Q: Equations for an algebraic gömböc

Roland BacherA gömböc is a $3$-dimensional convex body (having uniform density) which has exactly one stable and one instable equilbrium position (see https://en.wikipedia.org/wiki/G%C3%B6mb%C3%B6c). Such a convex body keeps its properties under tiny perturbations. There exists thus a gömböc given by algebrai...

 

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