this post was submitted on 25 Sep 2024
616 points (99.0% liked)
Science Memes
10885 readers
2356 users here now
Welcome to c/science_memes @ Mander.xyz!
A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.
Rules
- Don't throw mud. Behave like an intellectual and remember the human.
- Keep it rooted (on topic).
- No spam.
- Infographics welcome, get schooled.
This is a science community. We use the Dawkins definition of meme.
Research Committee
Other Mander Communities
Science and Research
Biology and Life Sciences
- !abiogenesis@mander.xyz
- !animal-behavior@mander.xyz
- !anthropology@mander.xyz
- !arachnology@mander.xyz
- !balconygardening@slrpnk.net
- !biodiversity@mander.xyz
- !biology@mander.xyz
- !biophysics@mander.xyz
- !botany@mander.xyz
- !ecology@mander.xyz
- !entomology@mander.xyz
- !fermentation@mander.xyz
- !herpetology@mander.xyz
- !houseplants@mander.xyz
- !medicine@mander.xyz
- !microscopy@mander.xyz
- !mycology@mander.xyz
- !nudibranchs@mander.xyz
- !nutrition@mander.xyz
- !palaeoecology@mander.xyz
- !palaeontology@mander.xyz
- !photosynthesis@mander.xyz
- !plantid@mander.xyz
- !plants@mander.xyz
- !reptiles and amphibians@mander.xyz
Physical Sciences
- !astronomy@mander.xyz
- !chemistry@mander.xyz
- !earthscience@mander.xyz
- !geography@mander.xyz
- !geospatial@mander.xyz
- !nuclear@mander.xyz
- !physics@mander.xyz
- !quantum-computing@mander.xyz
- !spectroscopy@mander.xyz
Humanities and Social Sciences
Practical and Applied Sciences
- !exercise-and sports-science@mander.xyz
- !gardening@mander.xyz
- !self sufficiency@mander.xyz
- !soilscience@slrpnk.net
- !terrariums@mander.xyz
- !timelapse@mander.xyz
Memes
Miscellaneous
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Lower Bound on the Length of the Shortest Superpermutation aka "The Haruhi Problem" by Anonymous
Video explaining the problem and solution
tl;dr if you have the numbers 1 and 2 you can make two permutations with them: 12 and 21. You can also make a "Superpermutation" with something like 1221 which is a sequence that contains all permutations of 1 and 2. A shorter sequence would be 121 or 212. Finding the shortest sequence that contains all permutations of any given set of numbers was an unsolved math problem. Someone posted on 4chan's anime board asking for the most efficient way to watch every permutation of "the endless 8", which are 8 nearly identical epsiodes of The Melancholy of Haruhi Suzumiya. Anime nerds pride themselves on watching these episodes over and over. Someone posted a sequence with a math proof for why it is the shortest. In essence, they posted the shortest superpermutation for a set of 8. The method can be used on any sized set and doesn't just apply to sets of 8.