Timeline for Smooth functions for which $f(x)$ is rational if and only if $x$ is rational
Current License: CC BY-SA 2.5
3 events
| when toggle format | what | by | license | comment | |
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| Dec 10, 2010 at 14:09 | comment | added | Thierry Zell | Also, the problem is not to prove that such functions exist, it's to find out if there are nonlinear examples. | |
| Dec 10, 2010 at 13:20 | comment | added | Francesco Polizzi | The question asks for a smooth function | |
| Dec 10, 2010 at 13:15 | history | answered | David Cohen | CC BY-SA 2.5 |