411 REFERENCE · Wiktionary
Poincaré conjecture
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
Originally conjectured by Henri Poincaré.
Proper noun
1
en maths historical The theorem that the only simply connected, closed 3-dimensional manifold is a sphere.
Usage notes
This is now a theorem rather than a conjecture, proved by Grigori Perelman.
en eponyms