therefore
Sign up
Open navigation

Questions, not proof records

Open-problem statements, with their sources attached.

Each statement record keeps the mathematical question, a dated status source, accessible references, and any pinned Lean formulation separate from proof verification.

“Open” is a dated source assertion. In these pinned sources, sorry marks an admitted statement, not a proof. Source indexing does not mean the formulation has been independently built or certified by Therefore.
1 topic

1 of 1194 statement records

17 source collections · 43 mathematical fields

Clear filters
Open problemEditorial · Diophantine approximation

Lonely Runner Conjecture

For nn runners with distinct constant speeds on a unit circle, each runner is at circular distance at least 1/n1/n from every other runner at some time.

Source checked Jul 24, 20261 pinned Lean statementInspect problem