New answers tagged

2 votes
Accepted

Handling degenerate planes in pseudo-Riemannian geometry: impact on sectional curvature and comparison theorems

How should this situation be interpreted? Why should there be any interpretation? The geometric intuition behind sectional curvature in the Riemannian setting is this: given a plane $\Pi$ in $T_pM$, ...
Willie Wong's user avatar
  • 37.4k

Top 50 recent answers are included