| Clue | Source | Date |
|---|---|---|
| Degree in theoretical mathematics? | ||
| Utmost extent | Newsday | 08 Jan 2023 |
| Ultimate degree | LA Times Daily | 27 Oct 2018 |
| Ultimate degree | The Washington Post | 27 Oct 2018 |
| Ultimate degree | USA Today | 20 Jan 2018 |
| Ultimate degree | ||
| Ultimate degree | ||
| High degree of proof? | New York Times | 05 Aug 2017 |
| High degree of proof? | ||
| Highest degree | Wall Street Journal | 10 Dec 2016 |
| Exponential unknown | ||
| Ultimate degree | ||
| Ultimate degree | ||
| Utmost extent | ||
| Utmost extent | ||
| High degree | ||
| High degree | ||
| Ultimate degree | ||
| Ultimate degree |