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Archived threads in /sci/ - Science & Math - 130. page
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How do we translate Politics into STEM autism?

We'll never do anything relevant as a species if we can't effectively control the masses and focus it's workforce into relevant efforts
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Politics is the polar opposite of STEM, it's not possible
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>>8387467
You mean indoctrinate people? Like China does? No thanks, I'll take my democracy and freedom of speech without "control of the masses", thanks. China's direction will inevitably lead it to conflict with other countries, it's only a matter of time. Also, you should go live there and see how cool it is to "control the masses" in person. There's a good reason democratic countries are the most stable and peaceful ones.
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>>8387481

We're fucking monkeys, my nigga

unfortunately the only way to make this work is using the alpha-beta dynamic -- your democracy daydream won't take us anywhere

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My little cousin needs to do a project for a school competition,it needs to be something a bit interesting but not hard to do,what are some good ideas?
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The synthesis of diamorphine and other morphine derivatives would make for a fun presentation
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Build a cloud chamber
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>>8387408
Is this high school, middle school or grade school?

por /sci/ ^.^
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god I fucking hate this kind of shit

literally only people who don't know math buy these for people that do in some vain attempt at connecting

if you want to connect with me try learning basic fucking algebra first don't buy some fucking shit cup some cunt made because she watched Interstellar and learned that LOVE IS THE ANSWER

fuck normies
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>>8387332
This. Oh wow, high school math equations that everyone was forced to learn. How nerdy. This is as cancerous as the normies who get the Harry Potter triangle tattooed on themselves because they're such nerds xDDDD
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>>8387341
> Harry Potter triangle
you are the cancer.

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Sup /sci/,

I'm working on a proba exercice, but I wonder one thing :

If [math] ( \Omega, \mathcal O, \mu ) [/math] is a measurable space, [math] \{ X_n \}_n [/math] a sequence of random functions, is :

[eqn] \{ \sup_n X_n = 0 \} = \bigcup_n \{ X_n = 0 \} [/eqn]
and
[eqn] \{ \inf_n X_n = 0 \} = \bigcap_n \{ X_n = 0 \} [/eqn]

Moreover, have we, for any borelian [math]\mathcal B [/math] :

[eqn] \{ \sup_n X_n \in \mathcal B \} = \bigcup_n \{ X_n \in \mathcal B \} [/eqn]
and
[eqn] \{ \inf_n X_n \in B \} = \bigcap_n \{ X_n \in B...
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Moreover, I'm NOT asking some help for my homework, my homework are completely different, so fuck you normiefag who wanted to call the mods.
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>>8387315
hey man, seems that you actually know math!!!
i study math as well (undergrad), but I hate probability so I'm not even gonna look at this (I'm a Pure guy... aldgebra and shit).
I think you spent too much time asking a question at a place where most users just psudo-science all day long and are mostly morons...
There are math forums out there...
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>>8387334
Probability is literally pure math. Hell, even statistics can be done as 'pure' math but its more of a stretch.

Hey /sci/ a question that I was wondering about the other day.

There are many examples of monogamous animals in nature. It has been observed that many of these animals forego their chosen partner in the case of infertility (of one or the other). I suppose it makes sense for such a behavior to develop, which is why I imagine it must also exist in humans?

Hence, assuming the mating pattern of humans is monogamous, wouldn't it make sense that repeated sexual intercourse with the same partner without pregnancy result in a response that encourages the person to...
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>>8387306
>There are many examples of monogamous animals in nature.

Only the ones that die right after mating. Monogamy is a human construct. Humans have never been monogamous and the shape of the penis and the vagina support this.
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>>8387355
>Humans have never been monogamous
My view is that humans are largely monogamous with a little bit of adultery. I don't understand what you mean by "monogamy is a human construct".
>the shape of the penis and the vagina support this
how come?
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>>8387538
The penis is made so it will remove the semen. It creates a suction when pulling back out. Repetition clears the vagina of someone else's semen. The semen itself creates a "soft plug" to help prevent this from happening and to help prevent someone else's semen from getting around it.

The reason is because humans sleep around a lot and tended to have orgies.

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The Nobel Prize laureates are going to be announced thus week. Who else is hyped?

Prizes that actually matter:

Medicine and Physiology
https://www.nobelprize.org/nobel_prizes/medicine/laureates/2016/

Chemistry:
https://www.nobelprize.org/nobel_prizes/chemistry/laureates/2016/

Physics:
https://www.nobelprize.org/nobel_prizes/physics/laureates/2016/
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more interested in seeing what good old Terry T does by the end of the year than seeing some gay awards given out
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>>8387287
I read the "Scientific Background", not the normie press release
>>
I feel a winner for the discovery of epigenetics and its applications is somewhat overdue

http://financialaid.stanford.edu/undergrad/policy/progress.html

why does the school only accept transfer students with a 4.0 gpa but their school has a minimum of 2.0 policy????
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>>8387252
Because if you want to push the agenda that non-whites are better than whites (and they are) then you better funnel non-whites very effectively to only get the absolute best of them on your universities so that then you can point to the academic genius math major Rakesh Harambibi Malala Yousafzai and then point to the frat kid Brian Brianster and say

>See! Brown people are better than white people. Case closed. Affirmative action now!

And it is fucking working. God speed, americucks.
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>>8387252

America lets native-born criminals keep their citizenship. Doesn't mean we should let felons immigrate. (Even though we do)
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>>8387274
ive never seen any social agenda trying to prove nonwhite are better than whites, but in a related aspect ive seen them trying to prove their not all bad.

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Do you any of you know of a program on Windows where you can store an equation and use it for later use? Not Excel. Preferably you can store the equation in algebraic form and use it later on by simply inputting the variables and calculating...anyone?
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>>8387244
It is called knowing programming.
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>>8387244
>Not Excel.
Why not?
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>>8387244
Mathematica or MATLAB

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Looking for other /sci/entists who might be interested to survey this free online course that just started, it's on Jacobi forms which are sort-of-modular, sort-of-elliptic functions: https://www.coursera.org/learn/modular-forms-jacobi

Pre-reqs are apparently knowing complex numbers and the group [math] SL_2(\mathbb{Z}) [/math], will post picture in next post

I'll be trying to work through all 12 weeks of it, just wondering if it's worthwhile to start some discussion threads on here about it or not

syllabus:
Jacobi modular forms: motivations
Jacobi...
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>To follow the course one has to know only elementary basic facts from the theory of modular forms (for example, the paragraphs 1-4 of the chapter VII of Serre’s “A Course in Arithmetic” are enough).
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final bump

as a bonus, lecture style is pretty comfy and upbeat
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sorry senpai, I'm too dumb for this shit, but I wish you the best of luck

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What's your position in regard to these concepts, except that they do function on a mathematical standpoint?

I cannot even find a fitting picture for this thread, because dark matter is not observable, but it is still here.

Are these modern concepts a hint that we, as human beings, have hit a wall in regards to our intelligence, something that we cannot surpass?
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>>8387200

95% of what exists is unknown. It's pretty exciting.
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>>8387200
>I cannot even find a fitting picture for this thread, because dark matter is not observable, but it is still here.
>>
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They are valid, predictive models which describe a very wide range of cosmological observations. Just because there isn't an understanding of what they are on a fundamental level doesn't mean they cannot be tested. Love it or hate it Lambda CDM is consistent with the observations we have today, there's no grounds to dismiss it currently. For that we will have to wait for better observations (on the way, pic related) or a better model. For dark energy there are other models, but Lambda is the simplest. For dark matter it's hard to imagine a theory that could replace it.

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Are engineering majors the STEM equivalent of feminists?

>using a faulty method of comparison (i.e. cherry picking), feminists come to the conclusion that women have it easier than men
>engineering majors look to their drop out rate to "prove" that their major is hardest, neglecting the fact that engineering tends to attract retards looking for quick cash after college who never end up making it to graduation

>feminists will NOT shut up about how hard women have it

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>>8386987
>feminists refuse to suck dick due to it being an act of submission
>engineers literally cannot stop sucking dick
I don't think so, op.
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>>8387020
>>
>>8387020
i mean
I'd say its more that both are in denial about it, but literally can not stop sucking dicks

Common Core puts those who are ahead or smarter and lumps them with retards who don't know shit. Pic is very related, why the fuck do I have to do this 7th grade science bullshit in fucking college?
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>>8386933
>Common Core
>College
don't feed the trolls kids
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>>8386933
American """"""education""""""" at its best.
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>common core in college

Will interstellar travel ever be possible? Is this planet the only one we will ever have?
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>>8386904
No
Yes
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>>8386904
Yes
Meaningless question because we don't "have" this planet, we just live on it.
In elaboration, interstellar travel is possible however all feasible forms of it involve timescales which very few if any people will find satisfactory, especially if they were asked to pay for it.
As to other planets, we have already proven that with decades old technology and some creativity we have already been able to send humans to another planet and bring them back alive. It isn't implausible at all...
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>>8386904
>Will interstellar travel ever be possible?

It will be possible but not for carbon based life. Artificial metallic life (AI nanobots) will experience this tho.

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Can someone help me with this molecule? I need to know what amino acid residue the DOTA is attached to and which end is the N-terminal and which is the C-terminal
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pls
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>>8386893
okay so i figured out the N-terminal (right side) still dont know what amino acid residue the DOTA is attached to and i now need to find the amino acid residues for the entire polypeptide
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is the first one on the right methionine? methionine is the only amino acid with sulfur but its one more carbon away from the alpha carbon than the one in this pic

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does anyone have experience with magnetic refrigeration?

I don't understand why it has not become mainstream yet.
what are the downsides?
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>>8386719
your pic is confusing as shit. Explain.
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>>8386724
well left is one cooling cycle from both compression and magnetocaloric cooling

on the right is an equation of the cooling efficiency (I think)

and on the top right measurement types for warming and cooling (I think)

I'm no pro that's why I'm asking but the cooling cycle is pretty easy to understand
>>
Looks a bit like a stirling engine, magnetically driven.
Coleman build a cooler using this principle. Its also used by the company stirlingultracold, but that is more for laboratory use.

Downside it that its probably too good, no compressor to break down...

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Taking upper division physics lab

full lab reports due every week

how do you do this without wanting to kill yourself?
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I have a lab every other week and I want to hang myself every time I write them

t. engineer
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You don't. If you want a career in research, you might as well start planning your suicide.
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>>8386682
I enjoy writing lab reports. If you don't want to do actual physics, switch to an english major and become the next ndt.

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Thoughts on this?
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>>8386666
>have to pay to access assignments
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>>8386666
the video guy is my husbando.
>>
Proof that universities have become nothing more than a fucking corporation at this point.

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Is economics even a science? As far as I know no theory was been able to constantly make predictions. It seems like justification for your political ideology more than accurately modeling the world. Liberals like Keynes, conservatives like Chicago or Austrian schools, and the far left likes Marx.

I want to learn economics but it seems a lot like political posturing.
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>>8386602
Physics and chemistry were studied for literally thousands of years before the even passable local theories were developed in the late middle ages / early Renaissance. Economics is actually very young in comparison and has stronger theories than, say, alchemical theories were for chemistry.

It's very young and progressing pretty normally as far as I can tell. At this time it lacks a coherent guiding principle like the Copernican principle or the principle of mediocrity. Much of the disagreement in economics...
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>>8386602
It is but like you said it's really focused on politics

But you can study economics as a science but it has lots of math and theory and you have to be really neutral about politics
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>>8386602

Thomas Piketty, Paul Krugman, and Joaeph Stiglitz, probably the most well known Economists today agreed that approaching the study Economics in a rigorous scientific fashion is just ridiculous. (they were all together at some random economic summit, its on YouTube you can look it up). I dont necessarily agree with them, but their opinions should be noted.

That being said, most economic models are either based on historical events, altered models based on historical events, eye candy for mathematicians, or...
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Dark matter is Dyson spheres. All arguments against this quickly fall apart under the slightest bit of scrutiny.

>inb4 "MUH INFRARED CAN'T POSSIBLY BE TRAPPED BECAUSE SOME BARELY CIVILISED APES HAVEN'T DONE IT YET SO SURELY NO BEINGS CAN EVER FIND A WAY"
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Popsci belongs on /x/
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>>>/x/
>>
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If only there were some way to rebuild the firmament.

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Who /BoyceAndDiPrima/ here?
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Stewart here
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is this one any good or should i get a different one? taking my first analysis next semester
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>>8386455
>>8386640

Shitty book thread?

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Was reading some stuff on how the supermassive blackholes at the center of galaxies affect the stellar evolution in the galaxy. So i'm curious, hypothetically, say our entire solar system were teleported outside the galaxy. Into just a big empty space. Nothing else around, no black holes, no dark matter, ect. All the orbital values stay the same, and the sun still puts put the same amount of energy.
Could this affect life on earth? And if so, what do you think, theoretically would happen to the orbit of the rest of the planets?
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/bump
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>>8386290
It would fuck up the earth's magnetic field by reducing its rotational velocidensity.
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>>8386505
The fuck is that?

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Can your IQ change on a day to day basis?
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Don't ask IQ brainlets. They think you are born a genius or a trumplet.
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>>8386232
Not science or math related, fuck off retard.
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>>8386252
It is science. "the intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment." Fucking retard

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So someone told me the other day that burden of proof is never on the personaking the initial claim, but on people who counter that claim. I think he's absolutely wrong since, in the scientific community, you have to provide your evidence outright with your claim or you'll pretty much get laughed out of the room.

So what do you guys think? Is burden of proof on the person making the unfounded claim or on the person who decides to question it?
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Person making*
>>
>'grill' namefig gins up a controversy
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>>8386242
>namefig
Why thank you for that rousing reply that really contributed to things. I just figure if I'm going to ask something like this, I'll be transparent with people.

I have my reasons, you have no real reply.

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Foundations of Differentiable Manifolds and Lie Groups (Warner), or Introduction to Smooth Manifolds (Lee). Experiences? Which is best as a first introduction?
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Neccessary and sufficient bump.
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>>8386148
How much topology/differential geometry do you already know ?
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>>8386148
I had Warner and thought it very good. Not easy for me though, it's pretty fast paced.

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I believe that the multiple worlds theory is wrong based on its fallacious assumption that if something can happen, it will happen given infinite time. That is not true. In a universe of finite matter, eventually almost every possible combination will have occurred and thus any combinations after that will be repeats of some previous event, but that does not mean that every single event will repeat. Just some. That means that any given even that occurs could be unique or not. Everything might repeat, or maybe every subsequent combination of matter beyond the point where every...
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On to my next point, I have thought about it, and I do not believe matter exists. Scientists have discovered that atoms are composed of quarks and gluons, but these quarks and gluons are believed to have no properties of their own. Rather, their mass, charge, and even what they are (quark, gluon, electron, et. c.) is determined by an arbitrary spin number that can be changed. This spin number can change, but doesn't, as if it is coded to be what it is. Similar to how a computer, when creating a 3D rendering, creates a bunch of data points in an imaginary space. The computer...
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>>8385973
>its fallacious assumption that if something can happen
Your assumption that the many worlds theory assumes this is fallacious.
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>>8385997
https://en.wikipedia.org/wiki/Many-worlds_interpretation

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Could we slowly let out tanks of oxygen on the moon, until we fill its atmosphere with enough we could breathe with or will its significantly weaker atmosphere let it out?
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There is no atmosphere on the moon
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>>8385936
see>>8385952

the moon simply cant hold onto one, its a tiny light bitch
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>>8385957
dissapointing

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I've just extracted what I believe to be Saltpeter from an old brick wall in my late aunt's barn.
Now, is it Saltpeter? How can I extract it from the dirt? The contents of the let test tube are very white, while the right has more dirt and therefore is more grey.ish.
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Bumping my own thread.
Come on /sci/
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>>8385934
Anyone?
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>>8385934
>I've just extracted what I believe to be Saltpeter from an old brick wall

How?

>conventional current defines current as the flow of positive charge
>protons don't actually flow
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>protons
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>>8385889
That's what you get when you let engineers do science
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>>8385891
>implying benjamin franklin was an engineer

Why isn't magic real?
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How do you know it isn't?
>>
It is, we're just out of mana.
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>>8385832
it is, but it only works when people believe in it.

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ITT I will try to solve (and in fact solve) all the Millennium Prize Problems one by one. I will do so by a new proof technique that has been proved to be quite powerful. It combined homothopy theory with algebraic geometry. Having said that, the proof technique itself is elementary though. So, let's go ahead.

1. [math] \displaystyle P=NP [/math]

By definition, polynomila algorithms admit decomposition in chains of smaller polynomial algorithms. Consequently, polynomial time algorithms do not solve problems where blocks, whoose order is the same as the underlying problem, require simultaneous resolution. Thus, in fact [math] \displaystyle P \neq NP [/math]

2. Hodge conjecture

Assuming that if a compact Kähler mainfold is complex-analytically rigid, the area-minimizing subvarieties approach complex analytic subvarieties. The set of singularities of an area-minimizng flux is zero in measure. The rest it left to the reader as an easy routine excersize.

3. Riemann hypothesis

This is a simple experimental fact. [math] \displaystyle 10^{13} [/math] roots of the Riemann hypothesis have been already tested and it suffices for all practical applications. In fact, one state a suitable statistical hypothesis and check it on the sample of, say, [math] \displaystyle 10^5 [/math] roots.

4. Yang–Mills existence and mass gap

Well, discrete infinite bosonic energy-mass spectrum of gauge bosons under Gelfand nuclear triples admits non-perturbative quantization of Yang-Mills fields whence the gauge-invariant quantum spectrum is bounded below. A particular consequence is the existence of the mass gap.

5. Navier–Stokes existence and smoothness

(To be continued)
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(Cont.)

I haven't worked this one in such detail, but observing that

[math] \displaystyle \| L (u, v) \| ^ 2 = \sum_{n \ge 25} u ^ 2_ {2n} v ^ 2_ {2n +1} / n ^ 2 \le C\|(u_n/\sqrt n)\|_4^2 \|(v_n/\sqrt n)\|_4^2 \le C\|(u_n/\sqrt n)\|_2^2 \|(v_n/\sqrt n)\|_2^2 = C \left (\sum u ^ 2_ {n} / n \right) \left (\sum v ^ 2_ {n} / n \right) [/math]

one can easily find at leat one closed-form solution applying the bubble integral. In the equation, [math] \displaystyle L [/math] is a bilinear operator.

6. Birch and Swinnerton-Dyer conjecture

The...
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P=NP

P/P=NP/P
N=1
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1475231192293.png
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>>8385844
What if P=0?

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