Assertion: curvature's geometry | /r/HasProperty | open
Facets:
value: for over fifty years
type: TEMPORAL
Source sentences:
text: Simon Brendle and Richard Schoen later extended Hamilton's sphere theorem to higher dimensions, proving as a particular case the differentiable sphere conjecture from Riemannian geometry, which had been open for over fifty years (Brendle & Schoen 2009).