Timeline for How to correctly enumerate all the schemes of this cube coloring problem?
Current License: CC BY-SA 4.0
43 events
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| Feb 24, 2021 at 7:43 | history | edited | J. M.'s missing motivation♦ |
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| S Feb 24, 2021 at 5:17 | history | bounty ended | A little mouse on the pampas | ||
| S Feb 24, 2021 at 5:17 | history | notice removed | A little mouse on the pampas | ||
| Feb 23, 2021 at 9:41 | history | edited | A little mouse on the pampas | CC BY-SA 4.0 |
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| Feb 23, 2021 at 8:32 | history | edited | A little mouse on the pampas | CC BY-SA 4.0 |
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| Feb 23, 2021 at 4:57 | vote | accept | A little mouse on the pampas | ||
| S Feb 23, 2021 at 4:57 | history | bounty started | A little mouse on the pampas | ||
| S Feb 23, 2021 at 4:57 | history | notice added | A little mouse on the pampas | Canonical answer required | |
| Feb 23, 2021 at 4:19 | vote | accept | A little mouse on the pampas | ||
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| Feb 23, 2021 at 1:31 | answer | added | A little mouse on the pampas | timeline score: 1 | |
| Feb 22, 2021 at 23:11 | vote | accept | A little mouse on the pampas | ||
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| Feb 22, 2021 at 10:35 | history | edited | A little mouse on the pampas | CC BY-SA 4.0 |
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| Feb 22, 2021 at 8:53 | history | edited | A little mouse on the pampas | CC BY-SA 4.0 |
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| Feb 22, 2021 at 8:29 | vote | accept | A little mouse on the pampas | ||
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| Feb 22, 2021 at 6:53 | history | edited | A little mouse on the pampas | CC BY-SA 4.0 |
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| Feb 22, 2021 at 6:00 | history | tweeted | twitter.com/StackMma/status/1363730256952258560 | ||
| Feb 22, 2021 at 3:54 | comment | added | thorimur |
Ok, I figured it out! Either the competition is incorrect, or there's been a translation error. Assuming the latter and guessing at the "right" translation, I modified my code and recovered 230, and updated my answer to explain it.
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| Feb 22, 2021 at 2:25 | history | edited | A little mouse on the pampas | CC BY-SA 4.0 |
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| Feb 22, 2021 at 1:45 | history | edited | A little mouse on the pampas | CC BY-SA 4.0 |
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| Feb 22, 2021 at 1:16 | history | edited | A little mouse on the pampas | CC BY-SA 4.0 |
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| Feb 22, 2021 at 0:43 | history | edited | A little mouse on the pampas | CC BY-SA 4.0 |
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| Feb 22, 2021 at 0:35 | comment | added | A little mouse on the pampas | @thorimur I've added the standard answer, but it's in Chinese, you need to spend some time to understand it. | |
| Feb 22, 2021 at 0:33 | history | edited | A little mouse on the pampas | CC BY-SA 4.0 |
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| Feb 22, 2021 at 0:26 | history | edited | A little mouse on the pampas | CC BY-SA 4.0 |
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| Feb 22, 2021 at 0:13 | comment | added | thorimur |
Thinking about your code, Sort[Sort /@ (g /. #)] & is a really cool invariant. What was your reasoning behind it? I think it could be interesting to consider it in its general mathematical context.
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| Feb 21, 2021 at 23:44 | comment | added | thorimur |
Ah, yes, but I'm looking for a derivation of 230. As of now, I'm convinced 215 is correct, but i might have made a mistake.
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| Feb 21, 2021 at 23:43 | comment | added | A little mouse on the pampas | @thorimur This is an extension of this problem - adding the restriction that the colors of adjacent faces can not be the same. You can also think that this is the 3D globe version of the map coloring problem. | |
| Feb 21, 2021 at 23:43 | answer | added | thorimur | timeline score: 12 | |
| Feb 21, 2021 at 23:33 | comment | added | thorimur | Yes, I can. Is the relevant question there somehow? | |
| Feb 21, 2021 at 23:31 | comment | added | A little mouse on the pampas | @thorimur Can you open this website? | |
| Feb 21, 2021 at 23:28 | history | edited | A little mouse on the pampas | CC BY-SA 4.0 |
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| Feb 21, 2021 at 23:17 | comment | added | thorimur |
I got the third answer—215—so I'm wondering if there's some peculiarity in the question statement or the notion of proper flipping that I'm missing. Unfortunately, the webpage you linked isn't loading for me. Do they explain how they got it?
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| Feb 21, 2021 at 22:57 | history | edited | A little mouse on the pampas | CC BY-SA 4.0 |
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| Feb 21, 2021 at 21:43 | history | edited | A little mouse on the pampas | CC BY-SA 4.0 |
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| Feb 21, 2021 at 20:39 | history | edited | A little mouse on the pampas | CC BY-SA 4.0 |
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| Feb 21, 2021 at 20:16 | comment | added | A little mouse on the pampas | @JimB Yes, but it's an exercise problem that I can't solve. It's different from the conventional problem without different color restrictions. I don't know how to solve this problem effectively at present. | |
| Feb 21, 2021 at 18:28 | comment | added | JimB | Are you working through all of the combinatorial exercises in a textbook? | |
| Feb 21, 2021 at 18:17 | history | edited | A little mouse on the pampas | CC BY-SA 4.0 |
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| Feb 21, 2021 at 8:27 | history | edited | A little mouse on the pampas | CC BY-SA 4.0 |
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| Feb 21, 2021 at 8:15 | history | edited | A little mouse on the pampas | CC BY-SA 4.0 |
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| Feb 21, 2021 at 7:00 | history | edited | A little mouse on the pampas | CC BY-SA 4.0 |
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| Feb 21, 2021 at 4:49 | history | edited | A little mouse on the pampas | CC BY-SA 4.0 |
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| Feb 21, 2021 at 4:41 | history | asked | A little mouse on the pampas | CC BY-SA 4.0 |