| A Pivoting Algorithm for Convex Hulls and Vertex Enumeration of Arrangements and Polyhedra Recent countries visiting this post |  |
 | 6 | United States |
 | 4 | China |
 | 1 |
| A Pivoting Algorithm for Convex Hulls and Vertex Enumeration of Arrangements and Polyhedra Recent countries visiting this post | |
| 6 | United States |
| 4 | China |
| 1 |