| Graph Theory with Applications Recent countries visiting this post |  |
 | 28 | United States |
 | 4 | China |
 | 4 | |
 | 3 | New Zealand |
 | 1 | Russian Federation |
 | 1 | Japan |
 | 1 | Israel |
 | 1 | Philippines |
| Graph Theory with Applications Recent countries visiting this post | |
| 28 | United States |
| 4 | China |
| 4 | |
| 3 | New Zealand |
| 1 | Russian Federation |
| 1 | Japan |
| 1 | Israel |
| 1 | Philippines |