Skip to main content
5 events
when toggle format what by license comment
Feb 15, 2012 at 15:46 vote accept Klaus Kröncke
Feb 15, 2012 at 15:20 answer added Renato G. Bettiol timeline score: 8
Feb 15, 2012 at 14:29 comment added Anton Petrunin $$\mu=2\cdot n+3$$ ($\mathbb C\mathrm P^n$ is isometric to the factor $\mathbb S^{2n+1}/\mathbb S^1$. You can use O'Nail's formula to calculate sectional curvature, it is $=4$ in complex directions and $=1$ in real directions.)
Feb 15, 2012 at 11:58 comment added Deane Yang Isn't this available in many different places, including Griffiths-Harris and wikipedia?
Feb 15, 2012 at 11:42 history asked Klaus Kröncke CC BY-SA 3.0