[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 / qst / r / r9k / s / s4s / sci / soc / sp / t / tg / toy / trash / trv / tv / u / v / vg / vip /vp / vr / w / wg / wsg / wsr / x / y] [Home]
Archived threads in /sci/ - Science & Math - 134. page
Images are sometimes not shown due to bandwidth/network issues. Refreshing the page usually helps.

File: 1457709196418.jpg (84 KB, 632x800) Image search: [iqdb] [SauceNao] [Google]
84 KB,
Has anyone here made a algorithmic trading software? It seems like Python & MATLAB are the best languages to use over C++.
Are there any good textbooks on this subject?
>>
File: py1.jpg (109 KB, 1000x1422) Image search: [iqdb] [SauceNao] [Google]
109 KB, 1000x1422
>>
>>8381906
MATLAB is slow as fuck, use Python or other real programming languages
>>
when will the python meme die

python is the myspace of programming languages

File: 1473965862333.png (72 KB, 900x900) Image search: [iqdb] [SauceNao] [Google]
72 KB,
>Musk was severely bullied throughout his childhood, and was once hospitalized when a group of boys threw him down a flight of stairs and then beat him until he blacked out.

>>
Well if he still knows the bullies' names he can crash their cars now.
>>
>>8381896
Kek
>>
>>8381896
Alternatively, he can "land" his rocket on them.

Hello,
I have a bachelor degree in Computer Science and recently switched my master to medical informatics, as that university has a decent artificial intelligence group, which is my main research interest. I already worked on a few research projects. I now have to choose between bio- and neuroinformatics but do not know which of the two offers more for artificial intelligence research. Are any specialists from either of the two here on this board to help me with this decision?pic unrelated
>>
>>8381666
self bump :(
>>
>>8381666
Try /g/, those guys are autistic enough to tell you exactly what the best way to fail at life is.
>>
>>8381666
Id say neuro satan, bioinformatics focuses more on sequencing, alignments and protein 3d modeling i think.

File: wew.jpg (84 KB, 620x775) Image search: [iqdb] [SauceNao] [Google]
84 KB,
You guys seeing these pictures?

I could look at these for days.
>>
Nah, space is stupid.
>>
Kinda looks like muh dik
>>
>>8381613
sauce faggot

152 KB,
what are the scientific reasons why africans have bigger penises than other races?
>>
>>8381594
They use it to pant.

When humans migrated to colder climates, they experienced shrinkage. To compensate, they started to use pants.
>>
File: trudeau2.jpg (122 KB, 940x724) Image search: [iqdb] [SauceNao] [Google]
122 KB, 940x724

USA btfo
>>
>>8381594
Bipedalism, primate dicks are small because if they were long they would get in the way of movement, since walkin primates or hominid started primate dicks have started to get longer and thicker, but because dicks are the fastest evolving organ in vertebrates it also means they can shrink like what happened to Caucasoids and Asians due to cold temperatures to preserve heat, but for blacks they can become longer due to hot temperatures, its weird how the top 3 countries with big dicks are in tropical regions.

File: 1456333682374.jpg (945 KB, 2293x997) Image search: [iqdb] [SauceNao] [Google]
945 KB,
creepy
>>
why
>>
>>8381363
It's interesting to see how different and surreal the landscape looks because of the lacking atmosphere.
>>
>>8381363
The nevada desert sure looks pretty

File: philosophyy.jpg (6 KB, 301x167) Image search: [iqdb] [SauceNao] [Google]
6 KB,
to Immanuel Kant?
>>
why do you say this?
>>
>>8381324
Please leave this board and never return.
>>
>>8381324
Fuck you. Leave.

File: athene.jpg (15 KB, 480x360) Image search: [iqdb] [SauceNao] [Google]
15 KB,
Why do you nerds keep studying science when this guy already finished it?

>>
>>8381224
I wonder if this video was part of his persona or if he's an airhead in real life.
>>
>>8381233

depressing how millions of people fall for this genius
>>
>>8381224
I FUCKING HATE PSEUDOSCIENCE. I FUCKING WANT TO KILL FUCKING EVERYBODY.

File: 83.gif (5 KB, 326x176) Image search: [iqdb] [SauceNao] [Google]
5 KB,
How can I prove that I can put the differentiation operation inside an infinite sum? Like Fourier Series.

Pic related.
>>
>>8381200
>sen
is this the retarded version of sine?
>>
>>8381211
It is the spanish version of sine.
>>
>>8381215
so yes?

File: metaphoricalart.jpg (182 KB, 822x719) Image search: [iqdb] [SauceNao] [Google]
182 KB,
Has a pull ever been observed as opposed to a push? When an object moves, is it being pulled or pushed.

Examples:
>Gas pressure equalizes due to more pushing in greater concentration.
>The sun pushes out photons.

I ask the question in regards to gravity. If a pull has never been otherwise observed, why is the scientific consensus that it is an attractive force? Isn't it more logical and empirical to conclude that mass creates a vacuum toward which some unseen force pushes other mass?

How...
>>
>>8381132

Newton and others before him struggled with the idea.

What it actually is doesn't matter, only that we can predict the motion.
>>
>>8381175
Can you tl;dr what Feynman said about it? What was his conclusion? "I don't know"?
>>
>>8381175
Feynman is over-idolized.
He was really smart, but people accept too readily that everything he said was 100% true/right.

File: 1452639355708.jpg (1007 KB, 4400x2475) Image search: [iqdb] [SauceNao] [Google]
1007 KB,
Are black holes white?
>>
>>8381033
I don't know is your mom white ?
>>
>>8381033
sheeeeeeeeeitttt nigga, i dun no nuffin bout dis BLAK wheole sheiit,, liek y's its gotta be blak?! fukin racis nigga craka
>>
>>8381049
>>8381044
i didn't mean race....

File: 1475034737756.png (51 KB, 657x527) Image search: [iqdb] [SauceNao] [Google]
51 KB,

>Eeew, real analysis! It's not even categorical.
>Grothendieck is easily the greatest mathematician of the 20th century.
>I'm interested in mathematical logic.
>>
>>
>I'm so hungry

incidentally it's the same thing they'll say even after receiving their pure math degree
>>
>>8381024
>>Eeew, real analysis! It's not even categorical.
>>Grothendieck is easily the greatest mathematician of the 20th century.
>>I'm interested in mathematical logic.

File: highlander.jpg (211 KB, 1200x791) Image search: [iqdb] [SauceNao] [Google]
211 KB,
If its possible through science.
>>

By the Many Worlds Law, when you die in this one, there is another one you're still alive in. You are therefore immortal

xD

physics 1
biology 0
>>
>>8380955
Real close
>>
>>8380971
Elaborate.

Is there anything I can do using hydrogen peroxide to cause an explosion/cool reaction?
>>
>>8380901
yeh it becomes super acidic if you mix it with vinegar

its even stronger than stomach acid so make sure to mix it in a metal bowl or pot. it'll eat right through a plastic bowl. also wear rubber dish washing gloves and safety glasses for obvious reasons

if you go to a party store you can get those super balloons, which can inflate super big. those use a different rubber than regular balloons and are resistant to acidic corrosion.

if you fill it into one of those balloons you can make a acid...
>>
>>8380909
Thanks bro, I'll have some fun with that
>>
>>8380909
>put it in a balloon
...won't it burn through it?

File: ramanajuan.jpg (64 KB, 620x380) Image search: [iqdb] [SauceNao] [Google]
64 KB,
than Grothendieck?
>>
the poo goes in the loo
>>
Ramanujan is one of the most overrated mathematicians to be honest

yes he was a genius on the level of Gauss, Euler

but in terms of acocmplishments alot of the stuff he just rediscovered

Grothendieck was a much more groundbreaking mathematician, people just like to romanticize Ramanujan's story
>>
Ramanjuan legacy isn't very impressive. He was a brilliant mathematician and could have easily been one of the biggest names had been given the opportunity. Wasted potential

File: image.jpg (148 KB, 1068x1112) Image search: [iqdb] [SauceNao] [Google]
148 KB,
How does /sci/ write $\mathbb{N}$ by hand?
>>
>>8380660
I put the line down the diagonal like you would with Z for the integers; everyone hates me.
>>
File: Untitled.png (14 KB, 875x265) Image search: [iqdb] [SauceNao] [Google]
14 KB, 875x265
>>8380699
>>
>>8380660
l l \ \ l l

Just squish that together.

File: chemistry_logo.png (242 KB, 600x340) Image search: [iqdb] [SauceNao] [Google]
242 KB,
we always talk ask these questions about who the greatest physicist of the 20th century (consensus is Einstein of course)

>>
>>8380643
me
>>
>>8380643
Alberto Einsteneo.
>>
Probably Linus Pauling

I need some advice from a M.D or med school student or something along those lines.

I live in Canada and have a long time history 10+ years of having a pretty serious case of general anxiety as well as chronic depression. I have been on a multitude of anti depressants and anti psychotic medications, most of which have failed and then they try something else.

I have a history of drug abuse (cocaine, alcohol, nicotine, cannabis) but have never been charged with a crime nor have I ever been checked into a mental hospital.

I can't sleep, feel absolutely...
>>
>>8380595
Kill yourself faggot
>>
>>8380595
>Benzo to slow you down
>Amphetamine to kick you up

Docbro here, careful with this combo. You can easily get caught in a cycle of taking uppers and downers.

In all honesty, I seriously doubt that you will find a doctor willing to prescribe this combination of drugs. On the face of it, it looks like you either want to sell them or get fucked up on them. Whilst I accept your intentions fully, there is a major risk that you will unintentionally...
>>
>>8380641

MAOI's , SSRI's. And SNRIs.

I can give you specific names of medications, off the top, Prozac, Zoloft, cipralex, celexa.

What should I ask for man I don't know what to do, and I can't keep doing this guessing game of trying a drug for 2 months and then trying another one.

What do I need more? An upper or downer? I was also brefily prescribed a low dosage of a benzo but they never worked.

How much energy would it take to deform the strongest metals? Like high-tensile steel or carbon nanotubes?
>>
>>8380517
17
>>
>>8380517
42
>>
>>8380517
145 energies.

File: 1453323691932.jpg (54 KB, 845x450) Image search: [iqdb] [SauceNao] [Google]
54 KB,
Do animals ask each other questions?
>>
There's strong empirical evidence that primates ask each other relatively sophisticated questions,, yes.
>>
>>8380470
Provide us with citations
>>
>>8380463
>humans are animals
>we are humans
>you just asked us a question
>thus animals ask each other questions
QED

Classiscal mechanics: solve a diffn eqn for the trajectory of a particle

Quantum mechanics: solve a diffn eqn for a description of the trajectory of a particle

"It's the theory that determines what you can measure." Is there really any merit to the so-called, "measurement problem?"
>>
File: 1475120035898.jpg (10 KB, 205x249) Image search: [iqdb] [SauceNao] [Google]
10 KB, 205x249
>>8380456
pic unrelated
>>
File: 1475179892227.gif (986 KB, 300x196) Image search: [iqdb] [SauceNao] [Google]
986 KB, 300x196
>>8380508
>>
>>8380456

Heisenburg was a fraud. Quantum mechanics was a mistake.

I remember when I was in Calculus 1, I started associating noises to my differentiation formulas.

Exemple: d/dx[x^r]=rx^r-1 was the simplest noise (just my mouth swallowing some air slowly and faster toward the end). d/dx[sinx]=cosx was a sort of metallic sound made with my teeth and my tongue (all trigo. functions were metallic sounds btw).
I started using them at first with numerators/denominators in exponents (Idk I was dumb) and then I used them for the calculus.

People kind...
>>
>>8380448
>faggotized nonsense
>/sci/ is muh blog
ok
>>
I find that the more odd or funny a mnemonic is, the more effective it is. For example, when my friend and I were studying for the SATs way back in high school, he came up with this mnemonic for the word 'aspersion.'
"If someone started spreading rumors that I was an ass-person, I would be very mad." His mnemonic for remembering that 'singe' is French for monkey was "that goddamned monkey singed my eyebrows off."

What I'm trying to say is don't be afraid to get creative, even silly.
>>
>>8380454
Can I speak for everyone that ever learned Latin that we have come up with the most embarrassing mnemonics no-one should know about?

File: image.png (53 KB, 256x256) Image search: [iqdb] [SauceNao] [Google]
53 KB,
Can cancer bacteria get cancer?
>>
File: 1475029819909.jpg (263 KB, 615x1012) Image search: [iqdb] [SauceNao] [Google]
263 KB, 615x1012
>>8380346
>image.png

Every time. Ban mobile posters.
>>
File: 1473133963257.png (73 KB, 283x337) Image search: [iqdb] [SauceNao] [Google]
73 KB, 283x337
Cancer can get cancer and the cancer's cancer can get cancer too just as your cancerous post is a creation of a cancer poster.
>>
>>8380346
Isnt a bacteria made of only one cell? How could it get cancer?

File: Horses.png (169 KB, 534x391) Image search: [iqdb] [SauceNao] [Google]
169 KB,
Why are people repelled by math? Ask a normal person anything more complicated than division and his mind shuts off. Even the most basic of algebra is beyond most grown-ups.
>>
>>8380332
because they're brainlets
also pdf related
http://www.maa.org/sites/default/files/pdf/devlin/LockhartsLament.pdf
>>
>>8380332
>rectangle

Shit shape for a fucking corral what the fuck is wrong with he person that made that image? It should be a circle 763.944 feet in diameter.
>>
>>8380332
I used to tutor high schoolers, and literally every single one of them hated math because they had had poor teachers in the past. They would fall behind, and because of the way math is taught, because they missed a key concept everything built upon that in the future would make no sense to them.

Most of them were responsive to that idea though, and because I had the time to go through and find where their comfortability with math ended we could always progress from there and improve their understanding.

I...

File: 1475021733107.jpg (36 KB, 407x441) Image search: [iqdb] [SauceNao] [Google]
36 KB,
I read about the Carbon Tipping point and how Earths climate will never be as good as it once was.

How fucked are we?

Are we still at a point where if we act soon humans can live comfortably?

Will this lead to human extinction in the foreseeable future? possible extinction of most complex life?
>>
Jeez dude. We'll probably be okay, just more unpredictable weather and coastal flooding. It will also affect the food supply, but the major victims will be 3rd world countries. Also you should just give up beef right now.
>>
>>8380335
Won't in vitro meat fix the beef stuff?
>>
who funds this climate imbecile

File: Portal_Infinity.jpg (115 KB, 800x640) Image search: [iqdb] [SauceNao] [Google]
115 KB,
Is infinity real or a construct of our perception?
>>
>>8380160
Literally what? Is it real, we wouldn't know if it real or not, your question is pointless. Not to mention, everything we can 'confirm' is formed out of our perception of the 'physical world'.
>>
>>8380160
Remember
Two portals can not collide.ever.
Portals can not be placed on moving surfaces.
Exploiting bugs in the engine does not make your statements true.
>>
>>8380160
>>8380165
everything is as finite as the energy that is provided, e.g. OP pic is pixel finite and the cpu has it's limits as to how many of those extra portals it can calculate. Just like how a human can only keep counting until he has to rest or dies.

File: HopfFibration.jpg (72 KB, 915x815) Image search: [iqdb] [SauceNao] [Google]
72 KB,
Looking to share a new insight in particular with Animenon-kun regarding spectral sequences from the nPOV.

Given some cohesive infinity topos of spaces, we have in particular Cartesian closed structure given by the product-hom adjunction. Also, assume we have a healthy notion of spectral sequences for our spaces. Then, given a nice fibre sequence $F\hookrightarrow E\rightarrow B$ upstairs, we have a spectral sequence $\pi_{0}(A^{F})^{B} \Rightarrow \pi_{0}(A^{E})$ for a coefficient object $A$. Now, reducing to the first K-theory, this ends up being the isomorphism $([A]^{[F]})^{[B]} \simeq [A]^{[F]\times [B]} \simeq [A]^{[E]}$, natural in $[A]$, where the second equivalence comes from the K-theory identity $[E] \simeq [F] \times [B]$. (I have used multiplicative language for this K-group since I feel that it is more "correct;" typically one uses additive language, but that clearly does not fit. The choice is technically arbitrary, but it ought to remind us of the higher stuff going on.)

So, from the nPOV, spectral sequences are a homotopy-coherentized consequence of higher Cartesian closedness. This will be a remarkable fact once I flesh it out more, since it means that we can use spectral sequences in any infinity topos! In particular, it shows why spectral sequences are able to be lifted to stable- and equivariant-homotopic settings, as these both inherit cohesive structure from their base topos. I would like to formulate this in terms of differential cohomology theory!
>>
Right, let's see. I must start with an apologetic comment that I know next to nothing about K-theory and differential cohomology or topoi/toposes/whatever, but I'll bump to keep the thread alive.

This sure looks interesting, and I need to read a bit more about this stuff to comment properly, but I somewhat see your point. If it really is the case that we can have spectral sequences in an $\infty$-topos, does this help you reach your goals regarding the stuff you mentioned yesterday?
>>
what the shit is this? is this math? how can it be math if there are no integrals? checkmate, philosophers.
>>
File: 1546485.jpg (80 KB, 1280x720) Image search: [iqdb] [SauceNao] [Google]
80 KB, 1280x720
>>8380401
This is math at its best. Abstract nonsense!

File: DUv8tx3.jpg (35 KB, 613x556) Image search: [iqdb] [SauceNao] [Google]
35 KB,
biology vs physics vs chemistry

discuss
>>
Phys>Chem>Bio
>>
without Engineers they'd all still be stuck in the Stone Age so engineering> all
>>
>>8379785
math > all
>>8379855
I know you probably never learned this in engineering class, but the > symbol means "greater than", not "less than".

File: diffuse.jpg (10 KB, 480x360) Image search: [iqdb] [SauceNao] [Google]
10 KB,
Why is it that light from a laser, when subject to diffuse reflection, appears as a cloud of countless shimmering points rather than a solid patch of light?
>>
Due to the way in witch the laser light is generated
>>
File: smells_fishy.gif (3 MB, 470x285) Image search: [iqdb] [SauceNao] [Google]
3 MB, 470x285
>>8379754
this is not even close to an answer you turd
F minus, now sit down.
>>
>>8379744
Its a result of interference between the photons of the laser. Think about constructive/destructive interference

File: great_khali.jpg (25 KB, 620x349) Image search: [iqdb] [SauceNao] [Google]
25 KB,
I there a reason why only humans have them?

Do they serve a purpose?
>>
>>8379691
They're like a penis except it's socially accepted to show it in public. Whoever has the biggest chin is the manliest. Don't let those sjws saying it's how you use your chin that matters, that's a meme.
>>
>>8379691
No, they serve no purpose. They are dumb and useless. Chins don't make you better, they probably make you worse!

t. Leafyishere
>>
File: file.png (490 KB, 600x600) Image search: [iqdb] [SauceNao] [Google]
490 KB, 600x600
>>8379691
Not all humans have chins.

[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 / qst / r / r9k / s / s4s / sci / soc / sp / t / tg / toy / trash / trv / tv / u / v / vg / vip /vp / vr / w / wg / wsg / wsr / x / y] [Home]
[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 / qst / r / r9k / s / s4s / sci / soc / sp / t / tg / toy / trash / trv / tv / u / v / vg / vip /vp / vr / w / wg / wsg / wsr / x / y] [Home]