Covering a polynomial lemniscate by discs
Show that the set where a monic polynomial has modulus at most 1 can be covered by discs whose radii sum to at most 2.
| 1 | { |
| 2 | "domain": "mathematics", |
| 3 | "topics": [ |
| 4 | "analysis" |
| 5 | ], |
| 6 | "type": "proof", |
| 7 | "source": { |
| 8 | "key": "erdos", |
| 9 | "name": "Erdős Problems", |
| 10 | "url": "https://www.erdosproblems.com/509", |
| 11 | "id": "509", |
| 12 | "curator": "Thomas Bloom", |
| 13 | "poser": "Paul Erdős", |
| 14 | "status": "open", |
| 15 | "as_of": "2026-10-20", |
| 16 | "catalog": "0521c19bbd38" |
| 17 | } |
| 18 | } |