Timeline for Really rigid varieties
Current License: CC BY-SA 3.0
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Oct 13 at 11:32 | history | made wiki | Post Made Community Wiki by Jason Starr | ||
Aug 3, 2011 at 21:25 | comment | added | Francesco Polizzi | I think the OP is asking more than rigidity in the large in the usual sense (any deformation of $X_0$ over a connected basis is still $X_0$): he really wants that any flat family with central fiber $X_0$ is trivial. $\mathbb{P}^1$ dos not satisfy this condition, think of Hirzebruch surfaces. | |
Aug 3, 2011 at 21:14 | history | answered | Jason Starr | CC BY-SA 3.0 |