On Thu, Apr 19, 2012 at 1:08 PM, Michael Kleber <michael.kleber@gmail.com>wrote:
What a great problem! I was still working through the first few minutes of "but... how... isn't..." when Jessica said "Okay, how about this?..." and solved it.
But is there more than one solution? I know about the answer depicted in http://i.imgur.com/iOfRI.png, but is that unique?
Ah: it's not unique, in that there are solutions like http://i.imgur.com/bxtbB.png as well. Are there any solutions that aren't a refinement of the basic dissection you get by gluing together pairs of pieces from either of the images above, though? That seems like it might be provable. --Michael
On Wed, Apr 18, 2012 at 10:50 PM, Bill Gosper <billgosper@gmail.com>wrote:
Colin Wright (e.g., *Colin Wright*: The Mathematics of *Juggling* on Vimeo<http://vimeo.com/27998521> )
posed this at G4GX (and G9?): Dissect a disk into congruent parts
at least one of which avoids the center by a positive distance. Neil
just beat me to a solution. Grr.
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