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4chan user solves 25y.o. mathematics problem while discussing anime

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Fantasy-prone theater organic girlfriend
  11/18/18
I read that article. 180 duder. 140ish anime. https://ww...
Fear-inspiring corn cake
  11/18/18
...
Vivacious Slippery Trump Supporter Site
  11/18/18
180 anime
unholy twinkling fanboi
  11/18/18
https://warosu.org/sci/thread/S3751105#p3751197
haunting people who are hurt
  11/18/18
lol at this having a link
cream library tank
  11/18/18
...
Drunken yarmulke nursing home
  11/18/18
how many different ways can you arrange 14 items/numbers? t...
avocado office deer antler
  11/18/18
it's not about finding all arrangements of 14 items (there a...
low-t dilemma
  11/18/18
oh i see what they're saying... "Over lapping is all...
avocado office deer antler
  11/18/18
Shortest and longest list
Tan pea-brained space gaming laptop
  11/18/18
you can easily make arbitrarily long ones (e.g. for n=2 do 1...
low-t dilemma
  11/18/18
Now imagine you're an architect and it's 14 front doors.
cream library tank
  11/18/18
180
180 talking juggernaut
  11/18/18
https://www.quantamagazine.org/sci-fi-writer-greg-egan-and-a...
haunting people who are hurt
  11/18/18
this is why the male group compact of 'patriarchy'/monogamou...
avocado office deer antler
  11/18/18


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Date: November 18th, 2018 8:56 AM
Author: Fantasy-prone theater organic girlfriend



(http://www.autoadmit.com/thread.php?thread_id=4136180&forum_id=2#37255951)



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Date: November 18th, 2018 8:58 AM
Author: Fear-inspiring corn cake

I read that article. 180 duder. 140ish anime.

https://www.rt.com/news/442388-4chan-solution-math-problem/

(http://www.autoadmit.com/thread.php?thread_id=4136180&forum_id=2#37255961)



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Date: November 18th, 2018 9:04 AM
Author: Vivacious Slippery Trump Supporter Site



(http://www.autoadmit.com/thread.php?thread_id=4136180&forum_id=2#37255983)



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Date: November 18th, 2018 10:26 AM
Author: unholy twinkling fanboi

180 anime

(http://www.autoadmit.com/thread.php?thread_id=4136180&forum_id=2#37256281)



Reply Favorite

Date: November 18th, 2018 10:23 AM
Author: haunting people who are hurt

https://warosu.org/sci/thread/S3751105#p3751197



(http://www.autoadmit.com/thread.php?thread_id=4136180&forum_id=2#37256268)



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Date: November 18th, 2018 10:28 AM
Author: cream library tank

lol at this having a link

(http://www.autoadmit.com/thread.php?thread_id=4136180&forum_id=2#37256298)



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Date: November 18th, 2018 10:43 AM
Author: Drunken yarmulke nursing home



(http://www.autoadmit.com/thread.php?thread_id=4136180&forum_id=2#37256383)



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Date: November 18th, 2018 10:29 AM
Author: avocado office deer antler

how many different ways can you arrange 14 items/numbers?

that doesn't sound like a very complex problem?

(http://www.autoadmit.com/thread.php?thread_id=4136180&forum_id=2#37256308)



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Date: November 18th, 2018 10:33 AM
Author: low-t dilemma

it's not about finding all arrangements of 14 items (there are 14! of those), it's about finding the shortest list (each element of which is one of the 14 possibilities) which contains all 14! permutations within it as sub-lists of contiguous elements

(http://www.autoadmit.com/thread.php?thread_id=4136180&forum_id=2#37256327)



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Date: November 18th, 2018 10:39 AM
Author: avocado office deer antler

oh i see what they're saying...

"Over lapping is allowed. For example, in the case of n=2, watching episode 1, then 2, then 1 again, would fit the criteria.

The orders must be continuous. For example, (1,2,1,3) does NOT contain the sequence (1,2,3)"

(http://www.autoadmit.com/thread.php?thread_id=4136180&forum_id=2#37256354)



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Date: November 18th, 2018 10:40 AM
Author: Tan pea-brained space gaming laptop

Shortest and longest list

(http://www.autoadmit.com/thread.php?thread_id=4136180&forum_id=2#37256361)



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Date: November 18th, 2018 10:43 AM
Author: low-t dilemma

you can easily make arbitrarily long ones (e.g. for n=2 do 11111111...1111121 with arbitrarily many 1s at the start), the exact length of the minimal string for any n is unknown but they give lower and upper bounds on it for n=14 in the article. the 4chan guy found a lower bound for all n and Greg Egan found an upper bound for all n

(http://www.autoadmit.com/thread.php?thread_id=4136180&forum_id=2#37256387)



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Date: November 18th, 2018 10:38 AM
Author: cream library tank

Now imagine you're an architect and it's 14 front doors.

(http://www.autoadmit.com/thread.php?thread_id=4136180&forum_id=2#37256350)



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Date: November 18th, 2018 10:36 AM
Author: 180 talking juggernaut

180

(http://www.autoadmit.com/thread.php?thread_id=4136180&forum_id=2#37256339)



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Date: November 18th, 2018 10:46 AM
Author: haunting people who are hurt

https://www.quantamagazine.org/sci-fi-writer-greg-egan-and-anonymous-math-whiz-advance-permutation-problem-20181105/

Contains a link to the actual paper. The first author credit is given to "Anonymous 4chan Poster".



(http://www.autoadmit.com/thread.php?thread_id=4136180&forum_id=2#37256406)



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Date: November 18th, 2018 2:02 PM
Author: avocado office deer antler

this is why the male group compact of 'patriarchy'/monogamous marriage is inevitable.

'beta males' serve a useful function and advance human civilization. while women are just birdbrained walking baby incubators who get suckered into voting for open-borders by seditious jews.

(http://www.autoadmit.com/thread.php?thread_id=4136180&forum_id=2#37257583)