Timeline for Pinball on the infinite plane
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
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| Feb 23, 2012 at 18:58 | history | edited | Liviu Nicolaescu | CC BY-SA 3.0 |
added 872 characters in body; added 2 characters in body
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| Feb 23, 2012 at 18:26 | comment | added | Simon Rose | Yeah, there's no way that $T_r$ is injective. If you look at a ball of... "small" radius moving straight up, and then look what happens as you let $\theta$ vary, you can see that you span most of the circle with that. If you then consider the same setup except with the ball heading straight down, right, and left, you see that this map can not be injective for small values of $r$. | |
| Feb 23, 2012 at 17:44 | comment | added | Sean Eberhard | Why do you have that ergodic belief? | |
| Feb 23, 2012 at 17:20 | comment | added | Peter Sarkoci | Why is $T_{r}$ injective? | |
| Feb 23, 2012 at 16:19 | history | answered | Liviu Nicolaescu | CC BY-SA 3.0 |