Etymology

Hauptvermutung

H4A1U1P3T1V4E1R1M3U1T1U1N1G2

Today it means: 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. Full definition →

German Hauptvermutung
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The story

  1. German · borrowed fromHauptvermutung
  2. English todayHauptvermutung

From German Hauptvermutung, from haupt- (“main, chief, primary”) + Vermutung (“conjecture”).

Etymology from Wiktionary, CC BY-SA 4.0.