Timeline for Can one "hear" the shape of a polygon via external reflections?
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
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| Apr 20, 2018 at 6:49 | comment | added | N. Virgo | I like the suggestion that the infrastructure at the heart of government is some sort of mysterious unilluminable object. | |
| Apr 19, 2018 at 15:02 | comment | added | Joseph O'Rourke | Beautiful! ${}$ | |
| Apr 19, 2018 at 13:36 | comment | added | j.c. | Thanks! That clears everything up. (I took the liberty of fixing the orientation) | |
| Apr 19, 2018 at 13:36 | history | edited | j.c. | CC BY-SA 3.0 |
edit image
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| Apr 19, 2018 at 13:34 | comment | added | Adam P. Goucher | The latter, from Cambridge to London, lacking electricity sockets for my laptop. | |
| Apr 19, 2018 at 13:34 | comment | added | Joel David Hamkins | Are you on an airplane? Perhaps a train...and evidently in some kind of mirror universe. | |
| Apr 19, 2018 at 13:31 | comment | added | Adam P. Goucher | Edited to include an image (I had to use the selfie camera to make it low-res enough to fit in MO's 2 MiB limit; sorry about the orientation). | |
| Apr 19, 2018 at 13:30 | history | edited | Adam P. Goucher | CC BY-SA 3.0 |
added 106 characters in body
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| Apr 19, 2018 at 13:27 | comment | added | j.c. | I'm probably not thinking enough, but could you describe the excavation in a little more detail (or draw a sketch)? What's confusing me is that the Penrose unilluminable room is usually described as a room which has unilluminable regions when lit with a point source that is inside... | |
| Apr 19, 2018 at 13:15 | history | answered | Adam P. Goucher | CC BY-SA 3.0 |