Noun
Hauptvermutung (plural not attested)
(topology) The conjecture, now proven false, that any two triangulations of a triangulable space have a common refinement, a single triangulation that is a subdivision of both of them.
Hauptvermutung main The Hauptvermutung (German for main conjecture) of geometric topology is the conjecture that any two triangulations of a triangulable space have a common refinement, a single triangulation that is a subdivision of both of them. Source: Internet