Open moueza opened 2 years ago
https://en.wikipedia.org/w/index.php?title=Convex_hull&action=edit
the closed set
:\left { (x,y) \mathop{\bigg|} y\ge \frac{1}{1+x^2}\right}
https://en.wikipedia.org/w/index.php?title=Convex_hull&action=edit