e/Hopf conjecture

Information
has gloss	eng: In mathematics there are two Hopf conjectures. They belong to the field of differential geometry, and are named for Heinz Hopf.
lexicalization	eng: Hopf conjecture
instance of	(noun) a hypothesis that has been formed by speculating or conjecturing (usually with little hard evidence); "speculations about the outcome of the election"; "he dismissed it as mere conjecture" conjecture, speculation