[a / b / c / d / e / f / g / gif / h / hr / k / m / o / p / s / t / u / v / vg / vm / vmg / vr / vrpg / vst / w / wg] [i / ic] [r9k / s4s / vip] [cm / hm / lgbt / y] [3 / aco / adv / an / bant / biz / cgl / ck / co / diy / fa / fit / gd / hc / his / int / jp / lit / mlp / mu / n / news / out / po / pol / pw / qst / sci / soc / sp / tg / toy / trv / tv / vp / vt / wsg / wsr / x / xs] [Settings] [Search] [Mobile] [Home]
Board
Settings Mobile Home
/sci/ - Science & Math

Name
Options
Subject
Comment
Verification
4chan Pass users can bypass this verification. [Learn More] [Login]
File
  • Please read the Rules and FAQ before posting.
  • Additional supported file types are: PDF
  • Use with [math] tags for inline and [eqn] tags for block equations.
  • Right-click equations to view the source.

08/21/20New boards added: /vrpg/, /vmg/, /vst/ and /vm/
05/04/17New trial board added: /bant/ - International/Random
10/04/16New board for 4chan Pass users: /vip/ - Very Important Posts
[Hide] [Show All]


Janitor applications are now closed. Thanks to all who applied!


[Advertise on 4chan]

[Catalog] [Archive]

File: iopenmouth.gif (40 KB, 425x306)
40 KB GIF
>all of the sciences got started because magicians studied a bunch of weird shit trying to predict next planting seasons weather
>science can put men on the moon, turn lead into gold, make men fly, cure men of most ills, make images move
>science STILL cant reliably tell me what the weather will be two weeks from now 7000 years later

Embarrassing STEMfags, you've failed desu desu.
22 replies and 1 image omitted. Click here to view.
>>
>>16988202
>*James gleick bursts through the wall like the the kool aid man coming to like harvest the dead souls of peasants like in the novel dead souls* >

‘The stochastic mechanism of statistical mechanics were or are ergodic theretofore heretofore the mechanism of the statistical is the stochastic idea of mechanism which is also statistical dividend to the stochastic in addition to that’
Boltzmann: {\displaystyle {\frac {df}{dt}}=\left({\frac {\partial f}{\partial t}}\right)_{\text{force}}+\left({\frac {\partial f}{\partial t}}\right)_{\text{diff}}+\left({\frac {\partial f}{\partial t}}\right)_{\text{coll}},}
Hertz- Bild-conception
Wittgenstein- Wherefore the individual can inscribe theretofore the individual can inscribe
Descartes- Cogito ego ergo sum
Berkeley- Esse est {percipe}
>>
>>16988417
>philosophy begins with thales.
a true wizard, though like the rest of the greeks, ultimately schooled in parts of the mysteries in heliopolis

https://youtu.be/KMAtkjy_YK4?t=11815

(at the timestamp)
>>
magic is real
>>
If you don’t consider nature or science to be magical then you don’t exactly appreciate nature or science do you?
>>
>>16988202
Good post. Really triggered the faggots.

File: 1779595541794109.jpg (23 KB, 588x513)
23 KB JPG
Why should I work on advancing science if a lot of people are doing that already?
13 replies omitted. Click here to view.
>>
>>16996625
But the current billionaires are literally trying to advance science and technology at full speed.
>>
>>16996609
manufactured shortage by a broken education system
everything has been Goodharted
>>
>Why should i fuck women if niggers are already doing it?
>>
>>16996713
Please respond to this
>>
>>16996720
you already did

File: 7wk013.jpg (14 KB, 193x250)
14 KB JPG
>If we have an unstable atom we don't know when it will decay because we just don't ok.

What causes this?
5 replies omitted. Click here to view.
>>
>>16996507
that's only due to the limitation of our measuring stick
>>
They tried to measure gravity from two small balls, but even if they had a minuscule difference in atoms, gravity is off. To make anything the same for a measurement would still make an error of space being in a different place.
>>
>>16996473
You don't know when an unstable human will have a mental breakdown. Only that they will. Same applies to an atom.
>>
>>16996473
Pi is repeating. There you go. All of nature is curves that never repeat. Meh so shit goes through time and space at curves and to figure out trajectories perfectly you’d need a perfect pi which doesn’t exist
>>
>>16996473
Nuclear physics is hard.

File: IMG_0790.png (8 KB, 330x339)
8 KB PNG
With advances in the set theoretic classification of infinities, we will soon be able to assign values to singularities.
1 reply omitted. Click here to view.
>>
Ni
>>
>>16995968
>singularities
Such as an "absolute unit"?
>The number 1 (one) represents the fundamental unit of counting and measurement, signifying a single item or the integer that represents "unity" (a whole thing).
>soon be able to assign values to singularities
I dont understand, I did have breakfast this morning.

https://youtu.be/9XwEiFIpjEQ
>>
File: 1774603194579062.jpg (80 KB, 1125x857)
80 KB JPG
>>16995968
>>
File: 1776707417478011.png (173 KB, 900x468)
173 KB PNG
ANGHOOEEY
>>
>>16995968
and? any singularity is bad in science

File: original.jpg (48 KB, 789x789)
48 KB JPG
>The point where the wavefunction collapses is random. We don't know what a wavefunction actually or how it works but we know the point of collapse is random because of muh interferencepattern.

This doesn't sit right with me.
>>
>>16996473
>>
From my superposition it never collapses, I sample them all and go down the path which doesn't lead to my non existence. I'm a quantum chungus, mf.

File: 1761152008855-0.jpg (1.15 MB, 1543x2048)
1.15 MB JPG
What is the scientific explanation for 99% of humanity acting like retarded NPCs?
10 replies and 1 image omitted. Click here to view.
>>
>>16996195
Your Main Character Syndrome and Dunning-Kruger clouding your judgment of others, I bet you don't believe animals have their own personalities and can think for themselves either.
>>
>>16996195
rhesus factor incompatibility
modern humans have 15% smaller skulls than ancient Cro-Magnons
chromosome 2 fusion

This means, real humans were kept in cages during pre-flood times and genetically altered into pseudo-monkeys.
>>
>>16996610
Why would it mean that?
What flood, the biblical myth? How could ancient Cro-Magnons be compatible with the time scale of the bible, you mean nephilim?
>>
>>16996195
The friend/enemy distinction.
People are your friends or enemies. This leads to two sides forming. Always two sides. All nuance gets brushes aside.
>>
>>16996195
They live a life sit on their intellectual hands and ask for explanations.

Most would agree that Humans are a very violent species, and some think that aliens are aware of us and our violence and avoid contacting us for this reason. A lot of people naively assume that aliens are going to be far more peaceful than we are. I think this assumption is flawed, because by the very nature of being a civilization and the master of its home planet a species had to by necessity become the most dominant species of that planet. Its hard to conceive how this level of dominance could have been achieved in the first place without violence. If you're a peaceful herbivore species like a deer, you're probably not going to evolve into an advanced civilization on your world. Predators are inherently more intelligent than Prey, because they have to be. Being a predator is a prerequisite for becoming sentient and developing a civilization in the first place.

That being said, it might be possible for a civilized species to shed its violent tendencies after it managed to reach that threshold, but I think being violent is necessary to get there in first place. Maybe an alien civilization shed its violent past, but I think in studying their evolutionary history there will always be a lot of hunting and warfare before it got to that point. Even if they do manage to eventually shed that, it is naive to take it as a given and just assume that they would. That's why I think it is a terrible mistake to try to speed-rush our way towards making contact with some alien species. We don't know what is out there, but whatever is out there that has risen to the top of the foodchain of its planet has managed to do so for a reason and that reason is probably NOT because they are benevolent pacifist hippies. Don't be naive.
49 replies and 7 images omitted. Click here to view.
>>
>>16996454
>100 years from now
>technological society still operating
The competency crisis will have caused the collapse of our modern society, which will take at least five hundred years to reboot.
>>
File: images (22).jpg (16 KB, 300x300)
16 KB JPG
>>16996576
>competency crisis
maybe in the w*st
>>
>>16985427
anything resembling human intellligence emerged a single time in history. and even of all the homo sapien subspecie only one was capable of technological civilization. it is not crazy to think that we are alone for such a vast distance that we imply dont overlap with other sentient beings. the fact that the fermi paradox exists is at least moderately strong proof that we are alone in the galaxy.
>>
File: 1718703772718256.jpg (113 KB, 634x714)
113 KB JPG
>>16996619
t. Chang et AI
>>
>>16981035
Its not that humans are very violent. The universe itself is violence. Chemical reactions are violent. Bacterias are violent. Cells are violent. Organic life is violence. Humans are just the tail end of it.

Any life form based in this universe will likely be violent, unless, the key here, is that the aliens are slow movers or slow reactionaries. Chemically speaking. Thus relative to our own, they will be less violent. But no matter what, their timeline may stretch thousands of years or millions, their plan is still in the same evolutionary path. Survival, through competition against others.

Is there any solid evidence that SSRIs are a net positive for the average person hooked on them?
Even if they are effective at reducing negative symptoms, is it worth the sexual dysfunction that otherwise has very real detriments on a person's well-being?

Riccati Edition

Previous: >>16940654
46 replies and 5 images omitted. Click here to view.
>>
I am mathematical laity who only barely passes highschool math. I wish to attain a solid graduate level apprehension of semigroups and group theory at large of course
>>
>>16995871
Thanks anon, I actually have a different solution to this problem, I just forgot to post it last thread
You'll have to excuse my laziness with the lack of formatting
If M~ is singular, we're done, so assume M~ is not, we need to show det M~ =1
It's sufficient to prove that M~^-1 is an integer matrix, since M is an integer matrix, and skew symmetry of M implies Det M~ >= 0
Then, let x be the unique vector such that M~x=ej, so if x is an integer for all j, M~^-1 is an integer matrix
Let u(k) = sum i>k x(i), v(k) = sum π(i)<k x(i), v(1)=u(n)=0,v(n+1)=u(0) (note this implies the map v->x is an injection)
x(k) = u(k-1) - u(k) = v(π(k)+1) - v(π(k)) (1)
It can be shown (Mid x)_k = u(0) - u(k-1) - u(k), (Mπ x)_k = v(π(k)) - v(n+1) + v(π(k)+1)
By our definition of x, ((Mid+Mπ)x)_k = 2δ(k,j)
So, v(π(k)) + v(π(k)+1) - u(k-1) - u(k) = 2δ(k,j) (2)
and, v(π(k-1)) + v(π(k-1)+1) - u(k-1) - u(k-2) = 2δ(k-1,j)
The difference is v(π(k))+ v(π(k)+1)-v(π(k-1))-v(π(k-1)+1) + u(k-2) - u(k-1) + u(k-1) - u(k) (3)
From (1) u(k-2) - u(k-1) + u(k-1) - u(k) = v(π(k)+1) - v(π(k)) + v(π(k-1)+1) - v(π(k-1)) (4)
So subbing (4) into (3) and halving: v(π(k)+1) - v(π(k-1)) = δ(k,j) - δ(k-1,j) (k=2..n) (5)
Let k=n, u(k)=0, u(k-1)=u(k) + v(π(k)+1) - v(π(k)) from (1), subbing into (2) and halving simplifies to v(π(n)) = δ(n,j) (6)
Collectively, v(1)=0, (5) and (6) are a system of n+1 equations in n+1 variables that can be written as Dv=a
D has at most one 1 and one -1 in each row, so is totally unimodular by a known result of Poincaré
D is invertible, since otherwise we'd have distinct solution v, implying distinct x, contradicting uniqueness
a is an integer vector, so then v is too, because D^-1 is integer, and x is too for any j

Comment too long. Click here to view the full text.
>>
>>16995995
Interesting. I spent a while looking for a "direct" proof like this but couldn't find one before I found the quadratic form business. I wonder whether your proof is just a computational distillation of mine or more fundamentally different, since my proof isn't much more than dressed-up elementary linear algebra anyway.
>>
Got accepted to the masters of my dreams.
LETS FUCKING GOOOOOO!!!!!11!!!!111
>>
>>16995995
>>16996057
What are you two geniuses doing here?

File: 1779349595719772.webm (3.18 MB, 480x848)
3.18 MB
3.18 MB WEBM
Where do orphan genes come from? Why do interdependent systems exist? Time and mutation cannot create anything, they can only destroy. And the timelines don't make any sense.
https://xenosarc.substack.com/p/from-a-mathematical-and-logical-standpoint
52 replies and 3 images omitted. Click here to view.
>>
>>16996590
>the initial design
That isn't how evolution works, though, the initial design would be more like the alphabet than the books.
>>
>>16996053
bro is so filtered and assblasted by biological evolution he'll argue chemical evolution doesn't exist lmfao. btw biological evolution is a direct corollary of chemical evolution.
https://en.wikipedia.org/wiki/Molecular_evolution
>>
>>16996590
Which is why the book analogy shouldn't be taken too far, since a book has a clearly defined purpose.
You might disagree that random mutation and natural selection lead to life as we know it today, but you seem to be disputing that the process, in principle, could work at all, which is just stupid. (the former is stupid too, but less so)
It really isn't hard to wrap your head around it. A random change to the gene that has no effect on an organism's ability to reproduce will proliferate. Eventually enough changes will accumulate that they will have a statistically significant impact on the organisms reproduction. If it's a positive effect it will be selected for, if it's negative it will be selected against.
>>
>>16996532
>we meet in the middle and say that God
that's not meeting in the middle. how about your fuck off and leave religion out of scientific discourse entirely?
>>
>>16996641
Read the rest of his post. It's snarky redditor shit.

File: 1771697159509694.jpg (1.27 MB, 3200x4000)
1.27 MB JPG
He is the hottest astronaut
5 replies and 1 image omitted. Click here to view.
>>
>>16993137
>Slow clap
>>
>>16993137
idgi
>>
>>16996137
A fire started in the capsule and killed the astronauts
>>
>>16996292
ah that's hot
>>
Not to me. They are planning all female crews so we might even get a sexy NASA calendar now they are getting involved in fashion and merch so hard.

Its Important?
NeuroRights Might Surpass to Solve
>>
'The mongrel culture tears apart the Culture, the Special Circumstances Protects the Uplifted mongrel Culture'
'Kulture attemted beatdown Culture'
'Culture scanned as Kulture'
Im Out, its shit, Stop Parasitising Auspiciousness and Goodlucks From Me, Particularly, Scumplex

File: 1780565442732108.jpg (18 KB, 275x183)
18 KB JPG
>it's a coincidence
>it's a hallucination
Bro they can't say that. Literally. It's a metaphysical stance and I thought scientists abhor philosophy and metaphysics in particular. Basically, that's scientism.

File: 0.jpg (31 KB, 512x512)
31 KB JPG
The nature of reallity scares me. I try to understand it, but the more i figure out the more it confuses and freaks me out. And it frustrates me how much we actually do not know. How do i cope?
7 replies omitted. Click here to view.
>>
>>16996481
And it's still true today
>>
>>16996415
stop trying to pin it down. you can't.
https://m.youtube.com/watch?v=lr2K71gtZk4&ra=m
>>
>>16996421
I personally find Tegmarks Mathematical Universe Hypothesis compelling. See: https://en.wikipedia.org/wiki/Mathematical_universe_hypothesis

I arrived at this independently through some thought experiments. Basically: our universe is either mathematical in nature, or our mathematics is insufficient to describe it and needs to be extended to cover the "non mathematical" parts. In my opinion the only thing that can exist in existence is the possibility of math, which is enough to encode every possible universe state and transition. Nothing apart from math exists, although some math structures may be upset to learn this fact.
>>
>>16996535
>muh
>>
>>16996481
Google search didn't try to rewrite everything, editorialized the base information, and contextual it all just to make you feel good about yourself, though, it just provided the information as is, often directly to a library reference or something like the library of congress if you specify.

File: IMG_1376.jpg (1.31 MB, 1756x2665)
1.31 MB JPG
>amyloid plaque hypothesis for Alzheimers is false
>we're back to square one after all this wasted time
Modern science is a farce
9 replies omitted. Click here to view.
>>
>>16994193
It's the science of turning sick and ill people into money.
>>
It comes from the use of highly processed vegetable oils like those in crisco, margarine, potatoes chips, mayonnaise, some tomatoes sauces, they put it in basically everything they can

your brain is mostly fat and this stuff replaces the stores in your cells
in a way that is detrimental compared to more complex animal fats, basically it degrades faster
>>
>>16994232
Humans are 100% animal.
>>
>>16996520
I would say that humanity is splitting into subspecies. Homo vulgaris, and homo domesticus. Vulgaris are the chads and jocks, they use violence to solve problems, don't like thinking too much, and are very effective at riding society to spread their genes. Domesticus, or the domesticated man, are the nerds. They prefer using logic and words to solve problems instead of violence, they like learning and thinking and being depressed, and they generally don't spread their genes very well, despite providing a lot of value for society itself.
>>
>>16996510
hmmm sounds kinda retarded desu


[Advertise on 4chan]

Delete Post: [File Only] Style:
[1] [2] [3] [4] [5] [6] [7] [8] [9] [10]
[1] [2] [3] [4] [5] [6] [7] [8] [9] [10]
[Disable Mobile View / Use Desktop Site]

[Enable Mobile View / Use Mobile Site]

All trademarks and copyrights on this page are owned by their respective parties. Images uploaded are the responsibility of the Poster. Comments are owned by the Poster.