Timeline for When does a hypersurface have contact-type?
Current License: CC BY-SA 3.0
6 events
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| Aug 26, 2012 at 20:34 | vote | accept | Chris Gerig | ||
| Aug 24, 2012 at 10:08 | history | edited | Thomas Rot | CC BY-SA 3.0 |
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| Aug 24, 2012 at 9:26 | comment | added | Sam Lisi | Also, to emphasize something implicit in the examples of Weinstein and Hofer-Zehnder is that a small perturbation won't allow you to make them contact. (This is discussed somewhat in Hofer-Zehnder, if I am not mistaken.) This tells you that being of contact-type is not generic for a hypersurface in $\mathbb{R}^4$. | |
| Aug 24, 2012 at 9:09 | comment | added | Sam Lisi | I haven't read Weinstein's paper, so this example may be essentially the same, but Hofer and Zehnder give an example of a wine bottle $S^3$ in $\mathbb{R}^4$ in their book (at the end of section 4.3). | |
| Aug 24, 2012 at 9:01 | history | edited | Thomas Rot | CC BY-SA 3.0 |
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| Aug 24, 2012 at 8:56 | history | answered | Thomas Rot | CC BY-SA 3.0 |