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Archived threads in /sci/ - Science & Math - 316. page
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>some arrangements of atoms are illegal
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>>8040889
build well!
>>
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>Certain 1's and 0's are illegal
>>
yes they are

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Hey /sci/,

Wut color is:
>> electron?
>> proton?
>> top quark?
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>>8040843
They're smaller than the wavelength of visible light so they have no colour
>>
>>8040861
In biology class we used microscopes to zoom in on the protons and shti but the sampls we were given were dyes and that is bullshit. I want to see their real color, even if it is harder to see! Are they like 1940 color?
>>
>>8040882
microscopes can't zoom in on protons.

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Mr. /sci/, what does DNA stand for?
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Deez nuts, ayy
>>
deoxyribonucleic acid
>>
Divine Naturel Apotheosis

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>mfw american ''exams'' are 90%+ multiple choice questions

What sort of joke is that? Why don't you do proper exams like the rest of us?
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>>8040681
Not at my school. Questions are proof based and if you fuck up you get 0 credit. Some exams are 4 questions so missing one question is an automatic 75
>>
There is a lot of tests and there is a easy way to grade
Bubble sheets
>>
>>8040687
>teacher: should I make a 5 question or 10 question exam?
>dumbfucks: umm i think 5 is less than 10 so easier. 5 plz lol :B
>exam is twice as hard as it would have been

I swear, this happened in every 100 level math class. At least by the 200 level those jackasses had flunked out and the ones who were left knew better.

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what does sci think of someone who exists outside of mainstream academia?

does the fact that he doesnt have what could be called a standard education detract from his potential?

just think this guy is profoundly more intelligent than the vast majority of nobel laureates yet he doesnt have a single degree.

why didnt he receive any support from the mainstream academic community?
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>>8040609
he's a brainlet that probably faked his IQ test lol

you are one as well because you fell for his trick
>>
>>8040609
There's nothing wrong with existing outside of mainstream academia. Not everybody wants to be a researcher.

However, not only is teaching yourself harder than having help to learn things, if someone is so passionate about research, why wouldn't they choose to get paid to do research all day instead of doing it for a couple hours after they get home from a job? There's very few autodidacts with frontier-levels of skill for those reasons.

Langan gets no support because his writing is nonsense...
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>>8040624
why do you think he faked his IQ test?

just think that there are around 2 standard deviations between a regular person and a full blown drooling retard

and there are about 7 standard deviations between langan and a regular person

there are 3 standard deviations between lagan and a typical nobel-tier genius

he should have people begging at his feet to work on select issues of humankind

this is all very confusing. he has the brainpower to advance humanity leaps and bounds, eg newton...
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I don't know if we've discovered enough about the subject but I got a few questions about the gravitational waves.


Why are gravitational waves work as oscillating waves and not a constant ?

What type of energy source are these waves originating from ?

Why isn't gravity just a static force ?

Whats the speed of gravitational waves ?

Are they a type of EM force ?

Is there a way to visualize these waves ?

Is there a way to cancel out or block these waves ?
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>>8040581
>Why are gravitational waves work as oscillating waves and not a constant ?
Because they were generated by 2 black holes spiraling into each other

>What type of energy source are these waves originating from ?
2 Black holes

>Why isn't gravity just a static force ?
It is limited by the speed of causality like everything else, and the points of origin were moving

>Whats the...
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>>8040587
my questions we not about the picture, it was more about the nature of Gwaves. can you answer again without relating to the black holes ?
>>
>>8040587
if gravitational waves move at C then the solar system wouldnt work

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WHAT THE FUCK IS THIS SHIT AND HOW THE FUCK DO I AVOID IT?

WHAT IF SOMEONE SHOOTS IT IN THE AIR OR SOMETHING?

https://www.youtube.com/watch?v=Ousn2QWySiw
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I think you need to be hooked up on this shit to become such a wreck. Also it should be easily detectable
>>
>>8040483
>blerg?
As I understand it, Krokodil is a contaminated opiate. The poorly executed isolation leads to necrosis when the drug is injected.

>WHAT IF SOMEONE SHOOTS IT IN THE AIR OR SOMETHING?
Nothing.
Someone sprays you in the face with a mixture of codeine/hydrocodeine/hydromorphone, etc and
organic solvents and nothing fucking happens.

Can you aerosol a lethal dose of opiates?
Yes. Fentanyl or something like could be given in...
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>>8040495
But it still gets into your bloodstream. Cummulative effects of a long term exposure would surely result in a necrosis wouldn't it ?

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Magnitude of the resultant force?
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>>8040374
sqrt(sumx^2 + sumy^2)
>>
>>8040387
Nothing to do with u or v axis right?
>>
>>8040374
>Force expressed in pounds
Americans are fucking cancer.

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Multiple sources cite spinach and quinoa as either alkaline or acid forming. There's no consensus online for those two foods.

Where can I find real research and results on this that are more trustworthy.
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altavista.com
>>
>>8040348

As I said. Lots of different websites claim spinach and quinoa are acid forming and alkaline forming. So who is correct?
>>
>>8040346
Spinach I saw to be rather acidic, this could be due to the presence of oxalic acid. But the camps really seem to be divided on wether quinoa is alkalinic.
Then again I imagine that for both cases it heavily depends on where it was grown (soil conditions), method of preservation, transportation, humitidy etc.
Interesting question though!

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So /sci/, how does one take notes effectively for class?
I find myself never reading my notes and just memorizing everything, only to dump it all after exams.
This of course only works in the short term and I find myself struggling more and more with courses
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>>8040234
I take notes to get rid of the unnecessary bullshit around a topic so that all the things I actually need to remember are in one place. I then focus on rereading the notes/doing problems until I have it all remembered.

1: understand the material
2: distil the parts that need to be memorised and note them down
3: do problems/review notes

simple really
>>
>>8040234
>just memorizing everything
If you have that kind of memory capacity, you don't need to take notes at all. Welcome to the non-brainlet master race.
>>
>>8040234
Why take notes, its redundant. Pay attention and make sure you understand the topic. And just copy notes of someone else....

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Advice for overcoming social anxiety would be great.

One bit of advice I've been given is to show up early and talk to students in the class on day one. Even if the hallway is completely silent, just say hello to a couple people around you and ask something that think about today relative to the class. The more people you talk to, the more comfortable you are in the setting,
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Stop caring what people you don't know think.about you.
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>>8040199
its not that easy for some people.
>>
>>8040196
in my experience, it doesn't get better. Rehearsing hypothetical conversations is a waste of time. The best way I've found is to weigh the best-case versus worst-case realistic scenarios I can think of. In particular, in a classroom setting, either I make an ass of myself by answering a question wrong as hell (or I embarrass someone else by answering a question correctly). That's survivable. Best case? I don't have to talk to anyone I don't already know.

I know this only really works...
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How are you getting ready for the megaquake that gonna hit us soon?
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lerning calculus.
>>
>>8040193
fapping to chinese cartoon girls
>>
>>8040193
Isn't it just gonna hit California?

The author was fired for writing this slander piece
I thought this article was incredibly stupid. the author talks about masturbating to feynman as a kid, and then hating feynman for being sexist once he learned more and became "more cultured"
science is the study of reality.
and reality is sexist, among other things.
get over it...
http://blogs.scientificamerican.com/the-curious-wavefunction/richard-feynman-sexism-and-changing-perceptions-of-a-scientific-icon/
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>science is the study of reality.
>and reality is sexist, among other things.
you've got a little bit of the is-ought problem there, m88

the problem with that column wasn't that it attacked Feynman's character, but rather that it was just one long shitpost, with little to no actual point. quality standards indeed.
>>
Feynman was a biological realist.
Only SJW social pseudo-science types think biological realism and statistical realities are "sexist"; he never stated he thought women were inferior to men, he thought they were less into science, math, etc.
And that is factually true.
The sexes evolved different interests.
This is backed by statistical analysis.
>>
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>>8040289
>Why yes I am a sex-realist
>Why yes I am a race-realist

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>>8040034
physical chemistry
>>
>>8040034

just off the top of my head:
chemical kinetics
modelling various chemical systems
reaction mechanisms
>>
>>8040125
>chemical kinetics
explosives, then?

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Is "heat" actually just a cloud of photons around an electron, or are photons some constituent part of the electron itself? It would seem that it must be the latter, as collision with a muon(?) will emit xrays, it seems to be more than a simple conversion. And yet, when a photon is absorbed and re-emitted, some of its energy is lost and turned to a higher state of excitation. Therefore, they do not seem to be so granular of a unit.

What are these things? What is it for a particle to be "excited"? I'm apt to try to take a reductionist approach...
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>>8039955
>it's a "layman tries to get an intuitive understanding of quantum mechanics" episode
oh
>>
>>8039968
>Layman who doesn't know makes fun of a layman who wants to know.
A behavior as old as mankind itself.
>>
>>8039971
I have no interest in QM but if I did I'd go and read a book on it instead of making shit up after reading the wikipedia page.

But that would be too illogical for you.

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Do you support Boaty McBoatface?
Can the high ranked egghead in science take jokes?
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>>8039938
Who the fuck cares about the name?

They never should have had the survey in the first place, whoever came up with that idea wasn't considering what would happen.

If they wanted to gain public support or whatever they should have given the survey to local elementary schools or something like that, have kids write an essay on what they think the name should be, the kids then tell their parents and it'll be good, some nice name

they should just name it whatever they want, nobody will remember...
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>>8039938

Social media is the downfall of humanity.
>>
>>8040028
Yes, thank you.

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Lately, I have heard from friends that they know people who have been "brainwashed" by people just blowing this shit in their faces. It's hard for me to imagine how that exactly works since people say you'll get completely docile but I wish there was some video in which someone tried to experiment to either prove or disprove it entirely. But if we're going by the notion that it works completely, how do you counter against it? What do you do if that powder shit gets blown in your face?
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>>8039857
Ingest some nerve gas
>>
>>8039857
>Scopolamine

what in the fucking fuck are you talking about? get the shit out and do some research you don't know anything. Get your fucking tabloid bullshit out of here.
>>
>>8039857
From what I understand if someone gets that stuff on you you're pretty much fucked. Advice is to not get too close to strangers if they're asking for directions or something like that. I don't know how effective that advice is, though.

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If someone could survive slamming into concrete at mach 1 relatively unharmed, could they survive a free fall from any height?
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Could they? Yes.
Will they? The odds are against them.
There are skydivers who have survived failing chutes, but that's considered a goddamn miracle when it happens.
>>
>>8039683
Is your terminal velocity superior to mach 1 ? You've got yourself an answer.
>>
>>8039691
Well, were talking about a theoretical human being whose body is durable enough to survive being slammed into concrete at mach 1 from about 10 feet with almost no damage. A human can't reach that kind of terminal velocity. So does this mean you could drop them from 10 miles and they'd be ok?

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I'm wrapping up my mechanical engineering undergraduate degree and all of my professors are pushing me to go to grad school even though I didn't originally plan to. Would it make sense to combine a graduate degree of some sort in condensed matter physics with my undergraduate ME degree? I have a lot of really wide ranging interests from machine learning to manufacturing, but I feel like I might be able to do some interesting stuff with training in CMP.

What do you guys think? I literally had no plans whatsoever for grad school and now everybody wants me to do it.
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>>8039667
oh indecision...

why can't youu work yourself out?

I'm sleepy now, time for bed.
>>
>>8039678
Partly because all of this has blown up over the last couple weeks, faster than I can comprehend it all. Also partly because the research I'm doing goes waayy beyond the scope of mechanical engineering and I'm curious what else is out there.

My goal in life is to work on as much awesome technology as possible, and I'm trying to figure out the most effective way to do that.
>>
>>8039682
I was trying to be clever but I guess it didn't work.

Big decisions involving a lot of outside influence and future plans often can leave you at a standstill wondering what could happen. Fortunately, life isn't exactly like ME and you can't live it the most efficient way. If you take your degree now and get a job, who knows where that will take you. If you keep going to school, you could end up teaching or with another job which will take you to who knows what. Take it with a grain of salt, which...
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Seems like we're safe.
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>>8039567

Vegetation increased in Europe because people decided it maybe wasn't the best idea to cut down all their forests and not plant any more trees. I don't know what other point you're trying to make.
>>
>>8039582
http://www.nature.com/nclimate/journal/vaop/ncurrent/full/nclimate3004.html
>Factorial simulations with multiple global ecosystem models suggest that CO2 fertilization effects explain 70% of the observed greening trend, followed by nitrogen deposition (9%), climate change (8%) and land cover change (LCC) (4%).
>>
95% of a tree's bulk is just comes from CO2 absorbed from the air. They're like crystals in a way; its fascinating

The best solution for curbing CO2 content in the atmosphere is to start farming genetically engineered super-algae en-masse and then pulverizing/harvesting it to make fresh, clean crude oil (that has far less pollutants) for our gas energy needs.
Too bad regular crude oil got so cheap and killed all interest in the idea

Can we discuss alcohol and how binge drinking effects the brain.

What are some good studies or articles on the subject?
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>Abstract

>Acute and chronic alcohol exposure significantly affect behavior but the underlying neurobiological mechanisms are still poorly understood. Here, we used functional connectivity density (FCD) mapping to study alcohol-related changes in resting brain activity and their association with behavior. Heavy drinkers (HD, N=16, 16 males) and normal controls (NM, N=24, 14 males) were tested after placebo and after acute alcohol administration. Group comparisons showed that NM had higher FCD in visual and prefrontal...
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If I black out 1-3 times a week in college is that gonna make me dumb eventually?
>>
>>8039621
Yikes lol. It can't be good for you. As a general rule of thumb when you start to get really really drunk stop drinking. I personally always know when I'm on the edge of a blackout, sometimes though I like falling off the edge.

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Nice animation os Daphnis taken from Cassini spacecraft:

https://www.youtube.com/watch?v=QKAm5NrcbXU
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http://saturnraw.jpl.nasa.gov/multimedia/raw/

She is still churning pictures out.
>>
Cassini / Huygens has to be one of the greatest robotic exploration missions ever. The amount of stuff we've learned about Saturn from just one launch is completely insane.
>>
>>8040225
You'd think they could have sprung for a color camera at least. My iPhone takes better pictures than that.

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What's more valuable to you /sci/? Intelligence or Strength?
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>>8039480

what the fuck do you think
>>
wrong place to ask this question, go to /fit/ where some gormless drongos would genuinely consider strength more significant than intelligence.
>>
They're on the same level

He thinks Biofags (which we all know are totally retarded) should know manifold theory, group theory and differential geometry KEK.

Does he overestimate the IQs of biologist?

>I agree to some extent with you, but not totally. Complex numbers clarify trig, Fourier series and oscillations a great deal and it's a shame not to use this. This is the same as the fact that linear algebra and stat are clarified (for some people anyway) by the abstract idea of vector spaces. The basic techniques of PDE theory are being used more and more and...
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As someone who was already well versed in Differential Geometry&Topology and Algebra at the undergraduate level. I still had study through somewhere between 30-50 pages of statements and proofs of important results in commutative algebra before I could even understand the definition of a Scheme.

Grothendieck's work will never be understood by the public. Just don't even try.
>>
>>8039458
>Differential Geometry&Topology and Algebra at the undergraduate level
Just to clarify, only the Algebra part was at the undergraduate level.
>>
>>8039458
The definition of a scheme shouldn't surprise you anymore if you studied how varieties work, brainlet.

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Ever have a professor like this?

>during lecture, really stresses that a handful of topics/concepts is really important and difficult and that we need to know them
>goes out of his way to make sure everyone really understands these few core topics
>a few things are covered rather quickly, not much emphasis placed on them, ehh, not too terribly important, whatever, who cares
>these extra, "trivial" little things are never mentioned or used...
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>>8039428
You showed that you have understood the important stuff by solving the homework, of course the other ones are in the exam, or are you a high schooler?
>>
well its okay if your are in high school. Right now, Im thinking about trigonometry. No one really explains what it is but you get the idea how it works.
>>
Oh, also,

>after the test
>"I'm surprised so many of you guys failed. I hope this was a wakeup call and that you start studying the things I tell you to really focus on. :^)"
>ohhhh I know your tricks now, you fucking gypsy sick hole
>prepare for the next test by scouring the book for every obscure little detail he didn't cover in class, getting pro at them, expecting him to pull another fast one on us
>next...
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Hey /sci/ I got an easy question for you.
No, it's not my homework, I've already solved it. I'll post the answer 41 minutes after this is posted.

Again, I'm not saying this question is hard, it's just simple but fun.
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>>
16
>>
when the side of the small corner square is equal to 1/4 the side of the big square.
>>
>>8039461
How did you figure that out?

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Why are humans obsessed with archetypes/tropes? Think of MBTI or zodiac signs. Especially females.
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>>8039380
>Why are humans obsessed with archetypes
It's easier to label something with a single word than with detailed stats.
>>
>>8039380
Race and gender are other examples. Humans seem to be obsessed with creating artificial social constructs.
>>
We like categorizing things for simplicity.

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Do you have a pet theory for consciousness? I'm really interested in how the sense of "self" arises in the mind. I feel like most of the other stuff going on in the mind is rather mechanistic - it gathers information from the senses and encodes it as concepts and memories. But the self is a mystery.

From what I've noticed, true consciousness and self-reflection only rises intermittently, when we aren't dealing with more pressing problems. Sort of like an idle state for the mind, or a focused daydream. And the "self" itself seems little...
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>>8039327

The self is just the external layer of many, many more primal layers, that extends till the reptile brain. I don't recall on any pattern from my own experience, but I know this:

-This "self" layer is very irrelevant, survival wise.
-This "self" layer actually affects the performance of other brain capabilities. For example, the less it takes control in physical activities, the better.

I always thought it could be even de-attached, for example, to pure logic processing....
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>>
consciousness is only the combination of all the senses mixed with an analytical mind, that's what gives the illusion of the self.
>>
>>8039327
First you must understand quantum physics. Consciousness is closely related to the collapse of the wave function.

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This statement was said by some guy in my school:

Out of 1 000 000 randomly selected people at least one is smarter than you, and he said that is 100% true. I know the whole argument is stupid, but just for the verification.

He also said on average there is at least 1 doctor per 1000, he then said: Think about how many thousands there are in 2 000 000 (as we were talking about leafy's fan base, and I was arguing that it was cancerous and most of them were stupid).

so is he right or am I right?

non pic related
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What he meant is that you are in the bottom 999 999 of the population when it comes to intelligence. He sounds like a clever guy with a good sense of humour that can offend you without you even realising.
>>
>>8039278
Holy shit BTFO
>>
>>8039278
lol fgt, i was not offended, I was simply saying it is likely but not 100% certain (btw i wasnt the one being called stupid, it was my friend)

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Bravo Euler
Bravo Gauss
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>not understanding complex analysis
Wow OP.
>>
>>8039142
have you ever heard of modulo 2pi ?
>>
>>8039142
[math](e^{\pi i})^2 = (-1)^2[/math]
does not follow from
[math]e^{\pi i} = -1[/math]


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