Timeline for Proofs without words
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 24, 2017 at 6:54 | comment | added | Jonah | @Turbo, When you tile with dominoes, each domino covers two adjacent squares. Because every two adjacent squares contain 1 black and 1 white, the original question is equivalent to the question: Can you tile with black-and-white dominoes where each domino's colors match the colors of the two squares it covers. (So we have replaced the original question with a more constrained question, but know that the answers must be identical). Yet when tiling with black-and-white dominos that match what they cover, it's clear you can only cover boards with an equal number of black and white squares. | |
| Jun 17, 2014 at 3:03 | history | edited | senshin | CC BY-SA 3.0 |
rehost to imgur to prevent linkrot
|
| Aug 27, 2012 at 3:42 | comment | added | Todd Trimble | It's easier if you do use words. If you take away opposite squares, you have more of one color than another... | |
| Feb 15, 2012 at 6:51 | comment | added | Turbo | can someone explain this in words? | |
| Dec 19, 2009 at 22:16 | comment | added | Jason Dyer | I have edited and put in my modification of the image. | |
| Dec 19, 2009 at 22:15 | history | edited | Jason Dyer | CC BY-SA 2.5 |
Changed image
|
| Dec 19, 2009 at 18:30 | comment | added | Jason Dyer | I don't think this is clear enough to be self-contained, although I have something in mind to fix it. Do you mind if I try? | |
| Dec 19, 2009 at 17:45 | history | answered | Gil Kalai | CC BY-SA 2.5 |