Timeline for How Many 4-Manifolds are Symplectic?
Current License: CC BY-SA 3.0
7 events
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| Jan 21, 2015 at 23:43 | history | edited | Dmitri Panov | CC BY-SA 3.0 |
I was claiming that it is known that all symplectic 4-manifolds with negative Euler characteristics are blow ups of ruled surfaces. This is in fact an open question by Gompf.
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| Nov 8, 2012 at 0:56 | vote | accept | Chris Gerig | ||
| Oct 28, 2012 at 15:46 | history | edited | Dmitri Panov | CC BY-SA 3.0 |
added 981 characters in body
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| Oct 28, 2012 at 15:08 | comment | added | Dmitri Panov | Mariano, it seems to me that this depends on weather you consider connected or disconnected surfaces :) ... For connected ones you are right of course. There might indeed be some probabilistic models... | |
| Oct 28, 2012 at 5:23 | comment | added | Mariano Suárez-Álvarez | (Your argument for Q1 probably breaks when applied to «is the probability of a compact surface having positive Euler characteristic positive?») | |
| Oct 28, 2012 at 4:19 | comment | added | Mariano Suárez-Álvarez | It would be interesting to (make sense of the question and) figure out what the probability distribution of Euler characteristics is... | |
| Oct 27, 2012 at 11:29 | history | answered | Dmitri Panov | CC BY-SA 3.0 |