We still haven't determined the exact smallest number of unit distances that must repeat among any large set of points drawn on a plane.
open
Global / Unspecified, Global
This problem, part of a broader family of questions in combinatorial geometry, has known bounds but no exact general formula for every configuration. Solving it would refine our understanding of how simple geometric constraints shape complex arrangements.
Citation ID: WS01266
Title: We still haven't determined the exact smallest number of unit distances that must repeat among any large set of points drawn on a plane.
URL: https://worldsolve.org/index.php?api=problem&id=1266