Timeline for Name for class of flattening permutations
Current License: CC BY-SA 3.0
14 events
| when toggle format | what | by | license | comment | |
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| Dec 23, 2014 at 14:07 | history | undeleted |
darij grinberg Benjamin Steinberg Yemon Choi |
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| Nov 24, 2014 at 21:12 | history | deleted | Alex R. | via Vote | |
| Nov 24, 2014 at 20:58 | history | edited | Alex R. | CC BY-SA 3.0 |
deleted 9 characters in body; edited title
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| Nov 24, 2014 at 19:10 | comment | added | Alex R. | @SamHopkins: I'll have to think about it. The OEIS for $(2n-1)!!$ lists a lot of different objects. | |
| Nov 24, 2014 at 18:55 | history | edited | Alex R. | CC BY-SA 3.0 |
added 142 characters in body
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| Nov 24, 2014 at 18:21 | comment | added | user35313 | @darij grinberg: I had standardization in my dictionary, not packing. Are they the same thing? | |
| Nov 24, 2014 at 17:46 | comment | added | Sam Hopkins | Do you have a bijection between $X_{2n}$ and perfect matchings on $[2n]$? | |
| Nov 24, 2014 at 16:54 | history | edited | Alex R. | CC BY-SA 3.0 |
added 40 characters in body
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| Nov 24, 2014 at 16:25 | history | edited | Alex R. | CC BY-SA 3.0 |
edited title
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| Nov 24, 2014 at 16:14 | comment | added | Alex R. | @IlyaBogdanov: must be dyslexia or something. Changed, thanks! | |
| Nov 24, 2014 at 16:13 | history | edited | Alex R. | CC BY-SA 3.0 |
edited body
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| Nov 24, 2014 at 14:12 | comment | added | Ilya Bogdanov | Isn't $\mathop{\rm flat}_3([4,2,5])=[2,1,3]$? Otherwise I do not understand what is `relabeling'... | |
| Nov 23, 2014 at 4:52 | comment | added | darij grinberg | FYI: What you call "flattening" is known as "packing" in the combinatorial Hopf algebras community. | |
| Nov 23, 2014 at 1:32 | history | asked | Alex R. | CC BY-SA 3.0 |