[Boards: 3 / a / aco / adv / an / asp / b / biz / c / cgl / ck / cm / co / d / diy / e / fa / fit / g / gd / gif / h / hc / his / hm / hr / i / ic / int / jp / k / lgbt / lit / m / mlp / mu / n / news / o / out / p / po / pol / qa / r / r9k / s / s4s / sci / soc / sp / t / tg / toy / trash / trv / tv / u / v / vg / vp / vr / w / wg / wsg / wsr / x / y] [Home]
Archived threads in /sci/ - Science & Math - 83. page
Images are sometimes not shown due to bandwidth/network issues. Refreshing the page usually helps.

File: 2016-01-18 15.07.48.jpg (187 KB, 949x343) Image search: [iqdb] [SauceNao] [Google]
187 KB,
Any suggestion? Should be easy, but i cant do it
>>
File: image.jpg (2 MB, 2592x1936) Image search: [iqdb] [SauceNao] [Google]
2 MB, 2592x1936
Greetings from Milan
>>
Mi prendi in giro?
>>
Ah no scusa era al contrario

File: fruit killing skills.png (200 KB, 367x448) Image search: [iqdb] [SauceNao] [Google]
200 KB,
How do I begin learning functional analysis?
>>
(s)kill yourself
>>
>>7793092
>>
>>7793092
study set theory then group theory then abstract algebra then real analysis then complex analysis and then you can begin studying functional analysis

File: 1448609821899.jpg (237 KB, 1920x1080) Image search: [iqdb] [SauceNao] [Google]
237 KB,
Recommend me the best book on babbys first quantum physics
>>
>>7793074
Griffiths is the diaper changer.
>>
Griffiths / Shankar
>>
>>7793074
Sakurai

File: mochizuki conjecture.png (9 KB, 150x108) Image search: [iqdb] [SauceNao] [Google]
9 KB,
If you could choose a single problem/conjecture to be solved in mathematics, which one would you choose?
>>
RH
>>
$\mathsf P \stackrel{?}{=} \mathsf{NP}$
>>
>>7793063
If P = NP, then obviously N = 1

SOLVED

File: KIC 8462 explanation.png (62 KB, 651x653) Image search: [iqdb] [SauceNao] [Google]
62 KB,
Is he right /sci/?

>tfw no aliens after all
>>
>>7793054
lrn2catalog
>>7785791
>>
All the sensible people already knew there were no ayylmaos in KIC. its just the /x/tards around posted pop-sci links that try so hard to make it look like aliens with zero scientific reasoning.
>>
>>7793054
>Oct.2015

There are new discoveries now m8.

File: nwq1j3e9wd47jxsqp8ah.jpg (63 KB, 640x480) Image search: [iqdb] [SauceNao] [Google]
63 KB,
>SpaceX
>Planetary Resources
>Deep Space Industries
>Blue Origin
>D-Wave
>Tesla Motors
>>
you wish little man :^)
>>
>>7793045

Well lets see...

>decline of wages and middle class = decline in sales for Amazon and Tesla
>SpaceX and Blue Origin get BTFO due to low investor confidence unless the gubmint steps in and gives them subsidies
>Tesla Motors only attract a niche market of rich normies. Also because electric batteries are still too fucking shit, Tesla stock declines, and in order to survive, gets eventually acquired by a larger company

>>
BUY OIL/TOBACCO/WEAPON STOCKS THESE WILL STILL BE AROUND IN 500 YEARS

File: 20160118_083527.jpg (2 MB, 3984x2988) Image search: [iqdb] [SauceNao] [Google]
2 MB,
Question I have always wondered

Why is the light that is on my ceiling blue?

Wondered this since I was a boy
>>
>>7793012
lightray scattering or somethig like that I think
>>
because the bouncing skylight is blue you nipple cuck
>>
>>7793022
wow rude
baka senpai

File: Pierre_de_Fermat.jpg (37 KB, 299x400) Image search: [iqdb] [SauceNao] [Google]
37 KB,
Hello /sci/,

I think I have found a direct proof of fermat's last theorem. It is only one page long but took me 3 days of thinking. After looking at it in retrospect, the solution seems very trivial - but I guess it's always so with NP-complete problems: Verifying is trivial.

There are two possibilities now: Either I am a complete retard or I was very lucky. In any case I have a couple questions for the case that I was lucky:

Is there a possibility to use it as a PhD thesis?
- If the theorem wasn't already proven then I know the answer...
>>
>>7792985
a) you're a retard, your proof is probably wrong
b) this won't give you a phd unless you used some really novel technique for it which generalizes well
If you are really sure, hand it in as an article for a peer-reviewed article
>>
>>7792985
>PhD thesis
No. You would need to show that you've put in an extensive amount of effort into research and have obtained a high degree of understanding. It's not enough to find a trivial solution to a problem.
You should publish it on Arxiv. Though, more than likely it's probably wrong. Many people have discovered "simple" solutions to the problem that have been later on proven incorrect.
>>
>>7792985
did the "scribbled in the margin proof" bit inspire you to optimize a solution the problem ?

I'm impressed that you understand FTL in the first place.

one day i hope to be able to ponder some high level dank stuff like this.

(doing precalc on khan academy) so i'm retard tier

File: image.jpg (26 KB, 511x288) Image search: [iqdb] [SauceNao] [Google]
26 KB,
Hey /sci/ I honesty have a legit question. It might have a simple answer, but anyhow.

>what space, does the Universe occupy? You could answer with space, but the next question would be.

But that would lead to more questions!
>>
>>7792906
Theres no way of knowing if the universe occupies any space. Your question is based on an unproven assumption
>>
there are no types of space retard. theres just THE space that the universe sits in.
>>
>>7792907
Anon I was just thinking, I wasn't trying to make assumptions. That's why I'm asking you guys.

It's just mind blowing to think that the "universe" or infinity, was somehow contained inside space!

File: 10443_1_.jpg (145 KB, 900x900) Image search: [iqdb] [SauceNao] [Google]
145 KB,
Y'all got any recommendations for a decent telescope I could get for less than \$350? Either reflector or refractor would be fine, I'm hoping to view planets, galaxies, and nebulae.
>>
> I'm hoping to view galaxies, and nebulae
lel
>>
>>7792845
interested; bump
>>
>>7792845
If you want to view fainter objects like galaxies and nebulae then I would recommend a reflector. More optics for the money. I'll find something for you.

File: Oil.jpg (900 KB, 3000x2250) Image search: [iqdb] [SauceNao] [Google]
900 KB,
Why hasn't some chemist come up with a clean burning alternative that would work in existing engines? They'd be set for life
>>
>>7792844
Sure, just combine O2 and H2 in your car and report back.

If it doesn't work, you can take it up with GM, Chrysler, etc. Why oh why haven't they brought this to market?
>>
>>7792844
Why can't we create something that provides vast amounts of energy with no negative ramifications?

Its a conspiracy Op. Jews and shit.
>>
>>7792844
Wasn't there a guy who did just that and then was offered by oil companies a million dollars or so to keep his technology to himself and when he rejected the money he was assasinated and all of his notes and diagrams suddenly went missing?

File: 292079.jpg (19 KB, 318x454) Image search: [iqdb] [SauceNao] [Google]
19 KB,
Best analysis
Pic related
>>
File: dustjacket_f_sm.jpg (395 KB, 640x779) Image search: [iqdb] [SauceNao] [Google]
395 KB, 640x779
>>
>>7792822
is this book good for learning proofs??
>>
File: Cover2Front.jpg (115 KB, 1113x1630) Image search: [iqdb] [SauceNao] [Google]
115 KB, 1113x1630
>>7793027
This one is, and it's free.

File: ss.png (16 KB, 1152x648) Image search: [iqdb] [SauceNao] [Google]
16 KB,
According to newtons second law, force=mass*acceleration. If you could theoretically have a bowling ball fall at a completely constant speed thereby eliminating the acceleration would there be any force when it hit the ground?
>>
>>7792782
no if the ball traverses the ground without slowing down.
yes if it does.

congratualtions, you have discovered neutrinos and dank matter.
>>
>>7792782
if I punch u at a 0acceleration do u get rlly get punched

>>
>>7792782

Yes. Although I'd argue the ball wasn't really "falling" so much as it was traveling toward the ground.

Tie a rope to the bowling ball and lower it at a fixed speed. It will accelerate upwards when it strikes the ground (to a speed of 0, modulo any bouncing). The force of that acceleration will be transferred to the ground.

File: yannbond.png (54 KB, 252x369) Image search: [iqdb] [SauceNao] [Google]
54 KB,
$\frac{6}{12} = \frac{4}{8} = \frac{6-4}{12-8} = \frac{1}{2}[\math] 5 replies and 2 images submitted. Click here to view. >> [math]\frac{6}{12} = \frac{4}{8} = \frac{6-4}{12-8} = \frac{1}{2}$
>>
File: yannick le roi.jpg (16 KB, 247x296) Image search: [iqdb] [SauceNao] [Google]
16 KB, 247x296
$\frac{3}{6} = \frac{5.5}{11} = 2^{-1}$
>>
how to latex?

$\prod\limits_{n=1}^{\infty} n^{2n^{n}}$

File: Analysis2.png (974 KB, 1252x1382) Image search: [iqdb] [SauceNao] [Google]
974 KB,
What would happen if an organization put something into LEO in the ionosphere and keep it in geosynchronous orbit with a receiver to beam a laser to the location for wireless power transmission? Could an optical tether be built between the two that would allow for high-efficiency energy transfer?