Timeline for What are fixed points of the Fourier Transform
Current License: CC BY-SA 2.5
6 events
| when toggle format | what | by | license | comment | |
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| Jan 17, 2010 at 7:15 | comment | added | engelbrekt | @Choi: Yes, they crossed. I remember noticing that. | |
| Jan 17, 2010 at 4:21 | comment | added | Yemon Choi | @engelbrekt: did our answers cross? I think we must have commented at about the same time | |
| Jan 17, 2010 at 2:31 | history | edited | Andy Putman | CC BY-SA 2.5 |
added 1 characters in body
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| Jan 17, 2010 at 0:14 | comment | added | engelbrekt | To add a little detail: The four eigenspaces are the closed linear spans of concrete functions, called Hermite functions, that are of the form (Hermite polynomial)e^{-x^2}. So you get a lot of fixpoints of the Fourier transform, namely everything that is the limit in mean square of linear combinations of those of the Hermite functions that belong to the eigenvalue 1. | |
| Jan 17, 2010 at 0:08 | vote | accept | pavpanchekha | ||
| Jan 16, 2010 at 23:58 | history | answered | Andy Putman | CC BY-SA 2.5 |