/sci/ - Science & Math

>>15828599
Whatever is in the new sticky, the OP image needs to include Kurisu
Practically the face of the board at this point

Why hasn't /sci/ been able to shit out any worthwhile threads since 2011?
Pic very related

Of course, there are bazillions of open problems not on that list.

>>12527323
The real answer is the Ultimate Haruhi Marathon.

>>12395001
the endless eight math problem

Well, /sci/?

>>11530261
>Can you characterize this board in one image?
Pic Related
>What is the original content that you as a board are most proud of?
0.999... = 1.0 meme
>Are there any tripfriends worth talking to?
I'm sure you know already know the answer to that.
We do have Tooker, though.

>>11113156
change it to 25 years and use the problem in pic related

https://www.iflscience.com/editors-blog/an-anonymous-online-anime-fan-just-solved-a-problem-thats-been-eluding-mathematicians-for-decades/

https://www.theverge.com/2018/10/24/18019464/4chan-anon-anime-haruhi-math-mystery

>>10560776
*blocks your path*

Should I take real analysis or abstract algebra first? The only proof based classes that I've taken are number theory and a normie CS-level discrete math class.

https://www.youtube.com/watch?v=OZzIvl1tbPo
>it took this long for mathematicians to pick up the Haruhi Problem

The “Haruhi problem” –better known to mathematicians as the minimal superpermutation problem – was discussed here in 2011. https://mathsci.wikia.com/wiki/The_Haruhi_Problem

Recently Greg Egan (yes the sf writer) made a major breakthrough with a new improved upper bound.

http://www.gregegan.net/SCIENCE/Superpermutations/Superpermutations.html

So the good news for Haruhi fans is that you now only need to watch 93,924,230,411 episodes to see them in every possible order.

But we're in the interesting situation where more mathematicians are becoming interested in this problem, and the best-known lower bound was proved by an anon here, which is kind of awkward to cite. Plus for some reason not everyone thinks /sci/ is a reputable source. The proof is on the wikia page linked above.

I don’t suppose the anon in question would be interested in writing a paper on it? If not then I guess someone else will, but it seems a shame for the person who came up with the idea not to get the credit (if they want it).

It seems some progress has been made on this.
It's *not* <span class="math">\sum_{i=1}^{14} i![/spoiler]

http://arxiv.org/abs/1408.5108
https://bosker.wordpress.com/2014/08/22/tackling-the-minimal-superpermutation-problem/

Clarification of the image: Every permutation of the episodes must be a contiguous substring of the list you watch, and the permutations may overlap. An optimal solution for three episodes is 123121321 (contains 123, 231, 312, 213, 132, and 321).

Summary of some old /sci/ threads on the problem:
http://mathsci.wikia.com/wiki/The_Haruhi_Problem