Archived threads in /sci/ - Science & Math - 495. page

Not possible

>>8940521
not possible
1 bucket
2 bird legs
3 castles
but no 4 things to circle in the fish picture
you can circle 5 fins on the 2 dolphins
you can circle 6 legs on the starfish

>>8940521
where did you find this proof

Somebody just read an Egan novel

>>8939813
what do you think consciousness is?

>>8939807
>we are such special snowflakes that we collapse wave function by just looking!

fuck off

File: numberphile.jpg (15KB, 320x180px) Image search: [Google]

15KB, 320x180px

Stop recommending numberphile. it's objectively bad compared to a good class and under-prepares students for anything number theory.

>>8939696
It's a supplement you dipshit. You go to class and then if you still don't get it you watch three 6-minute videos on your shit. It's used for brainlets struggling in school.

That said, he makes some interesting insights and connections that my instructors never mentioned

>>8939734
>It's a supplement

Then stop recommending it as anything but that. People glorify khan academy as if it surpasses any textbook ever and somehow magically makes everyone understand

18
Portland
Racial Femenism: A guide to the most evil thing known to mankind, The white male

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19
NJ
pic related

>>8939629
>13
>Fourier Analysis on Groups - Rudin

pick one

No, not everyone is as depressed and directionless as you

>>8939458
Where are you going?

>>8939451
The escape one

>>8939234
>If a world is thousands or millions of times wider than earth
it's automatically not a planet anymore but a star and pretty fucking big one at that

>>8939234
The rotation would be very slow, the wider it is the slower it can be to maintain 1g.. The atmosphere would block most of the surrounding scenery in the distance. Looking up, you'd be able to see the rest of the ring though. Like a far away arch over you disappearing into the distance somewhere through thick atmosphere. Dusk and dawn would look like a flat eclipse when they start.

I think if you read the Ringworld series of books you may get most of your answers.

>>8939259
Sorry I tried to say:
A ring world could have enough surface area, but will not have normal sunrise/sunset because of it's form, so not feasible
A giant planet which have 100 times diameter than earth could have enough surface area, but to maintain 24hours day/night circle it's surface rotation speed will be very fast

make up a vector field with rotation 0.
make up a different one, also with rotation 0.
done.

there's nothing like a quick savvy reply to make you think "well that was stupidly simple" about your question

For the same reason
[math] f(x_0) = 4 [/math]
doesn't determine [math]x_0[/math] for
[math] f(x) := x^2 [/math]

>>8938730
a dog

Just go and bang Pamela instead of losing your time on this nerd shit

Jerk off and you'll be able to think more clearly

>>8937486
I think porn addiction had more influence on your psyche than the act itself of masturbation.

>>8937486
like sleep, diet, etc, its all about a rational level where you control your behavior rather than relinquishing that control to your animal instincts

nice bait post though, had lots of mana

>>8937486
No way this isn't bait

yup

get out of my board you brainet rreeeeeeee

>>8936522
she could sell burlap potato sacks with that body, but that's one fucked up style

>>8936532
she is in poland. not too much money for gucci

>>8932319
I thought we already had machines that can google for directions.

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>>8932319
just a small bump

>>8932319
Probably not in our lifetime.

Surgeons won't be replaced by robots, they'll be replaced by regenerative medicine. Stem cells are key to this but they still have huge problems with heterogeneity, tumorigenicity, controlled differentiation, etc. They still can't even deliver them properly to target locations, they go all over the body.

Radiologists are being replaced...by doctors in India who read film for you, but hopefully President Trump will fix that. In terms of machine learning / computer detection, it's pretty far away. Some radiology tests produce a ton of data, and it's very difficult to do it for a general population.

GPs will probably be replaced by NPs or PAs. They cost less and less doctors want to become a GP for that low of a salary. (why make 160k a year after 12 years training and work crazy hours when you can be a PA or NP in two years and make 100 - 120k a year and work basically 9 to 5. )

>>8940378
try more degrees of freedom with the first fraction like [math] \frac{at+b}{(1+t)^2} [/math]

if that doesn't work just look up method of partial fractions

>>8940382
ok what I did is to type : [math](1+t)^2(1+t^2)[/math] as

[math]t^4+2t^3+2t^2+1[/math]

and then I divided it by : [math]t^2+2t[/math] in order to find another way of writing it.

So in the end I found :

[math](1+t)^2(1+t^2)[/math] = [math](t^2+2t)(t^2+2)+1[/math]

and now I replace [math]t^2[/math] with [math]X[/math]

>>8940389
am I going the right way?

>>8940232
>despite the common claim that there are none
[citation needed]

>>8940232
>despite the common claim that there are none
By whom?

>>8940240
>>8940246
Fermat, after whom this equation was named, or Wiles, who got Fields medal for supposedly having proven that this equation has no solutions, even though I've just shown you two

learn topology in a night? good fucking luck.

>>8939836
you are fucked hahahaah

>>8939840
>>8939842
I have a 93% in the class it's 100% tests and I've gotten decent grades doing this
I just need to see a good book so I can skim it and hit all the key topics over again.

>>8939579

if true, then we know that a whole class of problems become more easily solvable, we just don't know how to solve them yet

>>8939594
But why? Can you explain in layman please?

>>8939600

you can ignore the mystical non-determinism stuff and think about it like this. a problem in P can be solved in polynomial time. a problem in NP can be checked in polynomial time, i.e. if i give you an already computed answer, you can check in polynomial time whether this answer is in fact correct.

so why does anyone think these classes are related? well basically computing is a young field so there was a ton of low hanging fruit, problems that seemed hard were solvable efficiently (in P) with simple strategies like greedy algorithms and memoization. for example dijkstra's shortest path algorithm, it's like the most obvious approach, an undergrad can prove it correct... you too could have an algorithm named after you if you had the foresight to be a computer science professor in the 1960s!

but there were still some problems where no known technique worked better in general than the brute-force strategy of enumerating all possible answers and checking each one. at first these problems were discovered independently, but researchers came to realize that they were all hard in the same fundamental way, and that any general polynomial time solution to one of them would work for all of them, so all of NP would be in P. that's what the NP-complete stuff is about

so there's a bunch of problems that a bunch of different smart people all thought they could solve efficiently, but none of them could do it, so it seems obvious that P != NP right? except nobody has been able to prove it, and they don't even really know how to go about attempting to prove it. math is hard