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The new /sci/ wiki
https://4chan-science.fandom.com/wiki//sci/_Wiki

(More resources in replies)
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>>
Reminder: /sci/ is for discussing topics pertaining to science and mathematics, not for helping you with your homework or helping you figure out your career path.

If you want advice regarding college/university or your career path, go to /adv/ - Advice.

If you want help with your homework, go to /wsr/ - Worksafe Requests

Science is nothing more than voodoo religion trying to justify the current regime.

Fuck science. KILL science.
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Kill scientists. Behead scientists. Roundhouse kick a scientist into the concrete. Slam dunk a scientist baby into the trashcan. Crucify filthy blacks. Defecate in a scientists food. Launch scientists into the sun. Stir fry scientists in a wok. Toss scientists into active volcanoes. Urinate into a scientists gas tank. Judo throw scientists into a wood chipper. Twist scientists heads off. Report scientists to the IRS. Karate chop scientists in half. Curb stomp pregnant black scientists. Trap scientists in quicksand. Crush scientists in the trash compactor. Liquefy scientists in a vat of acid. Eat scientists. Dissect scientists. Exterminate scientists in the gas chamber. Stomp scientist skulls with steel toed boots. Cremate scientists in the oven. Lobotomize scientists. Mandatory abortions for scientists. Grind scientist fetuses in the garbage disposal. Drown scientists in fried chicken grease. Vaporize scientists with a ray gun. Kick old scientists down the stairs. Feed scientists to alligators. Slice scientists with a katana.
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>>16085755
Suplex a scientist off a 5 story building directly onto the head of another scientist?
>>
>>16085546
>Science is
... not just some random LaTeX document. The lack of context or reference where this even is from makes me wonder if it would sound far less outrageous in the proper context.
>>
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>>16085546
That is academia infested with woke parasites, not science, you imbecile moron.
>>
>>16085546
It's better for us if the scientists omit some or all of the result of a study because then we don't take on the mental burden of having to understand or be informed by the result.

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Fresh news directly from the press, how does it make you feel that dark matter doesn't exist?
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>>16082896
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>>16086106
>For God's sake, forget about relativity for a some time.
Even without GR there would still be time dilation. There is a classical Doppler effect.
>Dark matter in topic is introduced exactly because GR does not work on cosmological scale so well.
Oh great, so lets just replace it with... Nothing. And you shouldn't be so quick to assume there is no dark matter.

>Also I don't see how exactly I'm supposed to detect 'other quasars' if they are rare and their emission cone is missing the observer.
Because each quasar would have a nearly random orientation. And it's not up for debate, quasars are detected. If your logic says they shouldn't then your argument is flawed.

>Arp's correlation is just a positive phenomenological observation
This is complete doublethink. You claim correlation cannot be detected, but magically you say Arp's correlation is real. Complete contradiction.
If what you said was true there is no correlation and what he detected was just random chance. But you are wrong anyway.

>Not exactly the right word, *some* experimental errors are corrected and hypothesis is still hanging on.
He concludes his previous conclusion was entirely spurious and says this dataset cannot be used for this. I'd say that's a admission of failure on his part.
He's wrong about SDSS being useless btw, you just have to correct for the selection. Then you find no periodicity.
https://arxiv.org/abs/0704.0806
>>
>>16082970
>There is no mechanism that can cause redshift without scattering the light or having wavelength dependence.
Tired light.
>>
>>16086188
Tired light is just the hypothesis, there is no known physical mechanism that could actually do it. e.g. Compton scattering requires a change in angle.
Tired light was hypotheses a century ago and there is still nothing.
>>
>>16086188
How about we just don't know? It's not like you have to stuff everything you see onto your pet hypothesis.

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Previous thread: >>16056951

>what is /sqt/ for?
Questions regarding maths and science. Also homework.
>where do I go for advice?
>>>/sci/scg or >>>/adv/
>where do I go for other questions and requests?
>>>/wsr/ >>>/g/sqt >>>/diy/sqt etc.
>how do I post math symbols (Latex)?
rentry.org/sci-latex-v1
>a plain google search didn't return anything, is there anything else I should try before asking the question here?
scholar.google.com
>where can I search for proofs?
proofwiki.org
>where can I look up if the question has already been asked here?
warosu.org/sci
eientei.xyz/sci
>how do I optimize an image losslessly?
trimage.org
pnggauntlet.com

Comment too long. Click here to view the full text.
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>>
Following up from >>16060345

I have tried learning the mnemonics that a handful of Anons suggested and showed to me. I am still struggling to understand. I repeatedly get questions wrong during class and on my homework. I literally cannot articulate what I do not know that I do not know. Memorization has not been working, because like I predicted, something, specific to trigonometry, is compromising this ability and my memory does not seem to have been significantly impaired in any other area of my life.

Since my last post, I have tried:
>Creating flash cards of each of the trigonometric functions
>Several hundred problems' worth of trivial trigonometric function problems (i.e., given Sinθ = 3/2, find [all other trig functions])
>Consulting two professors and a half-dozen tutors on all of the above
>Borrowing 45mg of Adderall from a family member for studying (I will not be doing this again, regardless of the dose)

To seemingly no avail.

I want to learn this subject. I believe in its value, and I understand that it is an essential branch of mathematics, but I am at a complete loss as to how I can go about identifying my misunderstandings and shortcomings. I am truly beginning to believe that I have a legitimate learning disorder of this subject, artificially induced or otherwise. I hope maybe one of you might be able to intuit something.
>>
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>>16085973
I'm replying to myself but I think it is the case. Let [math]H(U)[/math] denote the collection of holomorphic functions on our region [math]U[/math]. Not really worth proving fully but you can embed [math]\mathbb{C}[/math] as a closed subset of [math]H(U)[/math] w.r.t. the topology I specified, and you can imagine how the one-point compactification of [math]H(U)[/math] restricted to this embedding would look a lot like [math]\hat{\mathbb{C}}[/math]. Pointwise projections from the compactification should force our one-point to take the value of infinity on all of [math]U[/math]... or something...
For those of you not in the know, when I say the topology of compact convergence I mean the one where a sequence of functions converges to whatever when it converges uniformly (w.r.t. the metric of whatever space these functions are mapping into) on all compact subsets of the region you're working on. Also generated by sets of the form [math]B(f,K,\varepsilon ):=\{ g:X\to Y \, | \, \sup_{x\in K} d_Y (f(x),g(x))<\varepsilon \} [/math] over all functions [math]f:X\to Y[/math], compact [math]K[/math], and all [math]\varepsilon >0[/math].
...But whatever, this is turbo-autism. Riddle me this /sqt/: should I bother attending my diffy geo class in the morning?
>>
>>16085973
Nope. ax as a->infinity converges to infinity everywhere except at 0, where it converges to 0. So it can't converge uniformly to infinity on any compact set containing 0.
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>>16086159
Lol, I see. I think the issue might be that the function space is not locally compact to begin with, hence no one-point compactification.
>>
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>>16085923
I'm getting into chemistry and I'm trying to grasp the basics. There's plenty of material out there, but it usually ommits some crucial details that would explain why things are the way they are and because of this I can't really 'understand the thing' instead of just memorizing random rules. And I can't grasp the prediction of reactions.

There's few things I wanted to ask about;
>Fe + CuCl2 -> FeCl2 + Cu
Why does iron bond with chlorine instead of copper? Is it because both Fe and Cu are metals and they replace themselves in the bond? Is this because Fe-Cl electronegativity difference is lower than Fe-Cl?
Same deal goes with
>Cl2 + NaBr -> NaCl + Br
Here halogens replace each other. I often find these rules about things 'usually replacing each other' but it's never explained why. Electronegativity? Valence similiarity? Or something else?

>AgNO3 + MgCl2 -> AgCl + Mg(NO3)2
Why exactly NO3 doesn't break here? Is it because it's bond is stronger than potentially anything else in this equation?

There's a lot of specific affinities like that of various compounds to act in a certain way. I've seen special remarks concerning acids, salts, oxides and metals in reactions. I'm sure they're valid, but I'd like to know where they come from instead of trying to memorize what compound is a salt and how it reacts with other compounds because at this stage I don't even know the reason for this classification, so it has virtually no meaning to me. Could you point to some good resources on learning reactions?

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If the climate is so much hotter now than it was in the past how come trees used to grow on the coast of the arctic ocean, but now its too cold for them to grow there?
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>>16045819
Humph before polshits
>>
>>16045819
Because global warming is a false narrative
>>
>>16078200
Because global warming isn't real
>>
>>16078200
If CO2 were really as strong a greenhouse gas as they say it is then it would be impossible for 1998 to have been warmer than 2011
>>
>>16085585
If 2011 can be colder than 1998 even though 2011 had 10% more CO2 in the atmosphere then CO2 couldn't possibly be worth worrying about in terms of it's potency as a greenhouse gas.

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Dysregulation of Hypothalamic Gene Expression and the Oxytocinergic System by S•ybean Oil Diets in Male Mice
https://academic.oup.com/endo/article/161/2/bqz044/5698148
>S•ybean Oil Might Be Altering Our Genetic Material And Leading To Diabetes And Obesity

A lot of people out there are trying to eat right, to give their body the fuel it needs, and to be as healthy as we can while we’re doing it.

That said, the advice and ramifications of what we put in our bodies seems to change all of the time – and now, something you probably eat has been proven to alter our actual genes.

The oils we use in foods and for frying, among other things, have changed quickly over the past couple of decades. Where canola or vegetable oil might once have reigned supreme, now peanut and s•ybean oil have taken the lead as “healthier” options.

When it comes to s•ybean oil, though, researchers are sounding the alarm.

Studies are starting to show that the rise in its use has coincided with a rise in metabolic conditions like diabetes, insulin resistance, and obesity.

This latest study shows that it even causes genetic changes in the brain.

Studies with mice have shown mice who consume s•ybean oil are more likely to develop metabolic conditions than those fed something else, like coconut oil.

Researchers posited that the linoleic acid is to blame.
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>>16082956
>Giant chickens are harmless they can't hurt y...ACK!
https://youtube.com/watch?v=PDCz3Zl14qQ
>>
>>16084623
You'd not allowed to name the east asian legume here, that word is censored as a means of hampering discussion of the topic
>>
>>16085542
Something they will pay dearly for.
>>
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>>16084628
>Giant chickens
>>
>>16084541
it actually a lot worse than what the meme suggests

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Welcome to NASA edition

Previous: >>16082724
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>>16086073
different camera lens obv
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>>16085987
>>16086061
>>16085428
I did my Masters at an African university. The university is just over a century old and the very worst student in the history of our department got a NASA internship. He failed every engineering subject he ever took, with the lowest average scores ever. He still graduated because he called all the professors racist (mind you, we mostly graduate black bantu students plus some Nigerian expats) and then through a combination of suing or using his political connections to the local mayor: the combined pressure on the department eventually allowed him to graduate. More than once his exams had to be sent all over Africa for remarking (if there is even a single drop of non-Bantu blood in the Prof he demanded this), the results were always failing him again, but sometimes it comes back 18% instead of say 16% and then he uses this as evidence of discrimination.

He then had the gal to ask the Profs he accused of racism for letters of recommendation for his NASA internship. The Profs then said they cannot recommend or not recommend him and explained the whole situation. We heard was immediately hired and NASA sent a snotty letter to the Profs.

I just want you Americans to know you are getting the absolute worst Africans imaginable, there are a few hundred thousand Africans including Bantus who would be qualified, but your companies and institutions are not interested in those, they are purely hiring political race baiters from the oligarch class on purpose. I thought the West was less corrupt than this, it's all very depressing.
>>
>>16086153
>I thought the West was less corrupt than this, it's all very depressing.
So did we. The inertia needed to actually do something about it is still building.
>>
>>16086153
oh fuck off dude
>>>/pol/
>>
>>16086183
stop crying, faggot

When do you think we'll be able to simulate organisms based on DNA information?

I mean, not just making statistical predictions, but simulating at the cellular level, meaningful enough for experimentation
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>>16084792
source?
>>
>>16086079
https://www.youtube.com/watch?v=ldXEuUVkDuw
>>
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>>16083972
>>
>>16086094
and that was 9 years ago.
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>>16086164
you fell for the akashic meme field?

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how is it possible for the carbon footprint of homegrown food to be 500% greater than conventionally produced food when homegrown food doesn't involve any tractors or any trucking the food to the grocery store or any driving to the grocery store to go buy it?
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>>16078222
Ok
>>
>>15992572
It isn't. Take your meds.
>>
>>16078243
>>>/pol/
>>
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>>16078182
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>>15992572

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The average IQ of a college student has fallen by 17 points over the past 85 years

https://www.frontiersin.org/articles/10.3389/fpsyg.2024.1309142/abstract

>Meta-analysis: On average, undergraduate students' intelligence is merely average

According to a widespread belief, the average IQ of university students is 115 to 130 IQ points, that is, substantially higher than the average IQ of the general population (M = 100, SD =15). We traced the origin of this belief to obsolete intelligence data collected in 1940s and 1950s when university education was the privilege of a few. Examination of more recent IQ data indicate that IQ of university students and university graduates dropped to the average of the general population. The decline in students' IQ is a necessary consequence of increasing educational attainment over the last 80 years. Today, graduating from university is more common than completing high school in the 1940s. Method. We conducted a meta-analysis of the mean IQ scores of college and university students samples tested with Wechsler Adult Intelligence Scale between 1939 and 2022. Results. The results show that the average IQ of undergraduate students today is a mere 102 IQ points and declined by approximately 0.2 IQ points per year.
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>>16082762
>worrying about the IQ, test scores and race of your doctors when a country like fucking Cuba with nearly a whole standard deviation below in intelligence than you has roughly the same life expectancy as the US.

For the record the current life expectancy was Cuba 79.9 yrs and US 80.8 yrs as stated by the 2023 CIA Factbook. Maybe just maybe the problem isn't an issue with aptitude or demographics...

https://www.cia.gov/the-world-factbook/countries/cuba/#:~:text=Life%20expectancy%20at%20birth,79.9%20years%20(2023%20est.)

https://www.cia.gov/the-world-factbook/countries/united-states/#:~:text=Life%20expectancy%20at%20birth,80.8%20years%20(2023%20est.)
>>
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>>16084385
usa life expectancy is currently under 76 years, it was never as high as 80
>>
>>16004180
FWIW, I'm tested 100 iq and am only going back to school to get the piece of paper. Worked in mortgage underwriting for years and could never get promoted solely due to not having a degree (previously filled in for the position with no issue). I would not be going back to school if hiring decisions were made solely on competency.

Add on to this that I'm a homeschool kid and had atrocious mathematical education which means that I am having an extremely difficult time with anything involving mathematics. Despite this, I'm still on the Dean's list for my school with only a 3.5 GPA (never had the chance to take the SAT or ACT, actually a miracle that I didn't have to go for a GED).
>>
>>16012277
the map is more important than the territory
>>
>>16085473
>life expectancy peaked a decade and has been on the decline ever since
nice job science, way to go

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Decided I won't do a PhD, which means my former dreams of making significant contributions to science will probably never come true. How do I cope?
>>
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>>16086142
if you can make a lot of money you could always hire scientists to do the science for you

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How does science explain the cooling trend over the past decade? Is this the start of the next ice age?
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>>16084629
thats a fake graph from a political propaganda outlet, the numbers on it are all lies
>>
>>16084608
what's her IQ? I'd say she's at least 120-130.
>>
>>16085609
Probably around that range yeah.

Anyway what you have to understand about her is that she is already in hot water with the German press and constantly accused of being "far-right" because she once said women and men should be treated equally instead of always hiring women above men or something like that.

Therefore you will not see her take the "wrong" side on political issues anymore, but she very subtly drops hints of her real beliefs.
>>
>>16086158
>far-right
>far
science is clearly free and there's no political pressure on it.
>>
>>16086166
It's how the "far"-left press tries to shift the Overton window. Of course it actually just massively backfires and pisses people off because most do understand when they're being lied to and also do not identify with that bitter flavour of destructive leftism. This is why young people in Germany are now all voting for those "far"-right parties with leaders that are lesbians who married a MENA women.

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is this good for the environment?
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>>16085432
wrong
>>
>>16062100
>>
>>16085395
so-so
>>
>>16062100
No, but it's good for the wind turbine lobby.
>>
>>16086126
prove the statement that there are virgin forests in western Europe.

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Shrigma male of St Petersburg edition
Talk maths, formerly >>16035182
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>>16083081
Hey, making fun of mentally ill people is a serious offence. I like that you’re trying to help them tho. Maybe just say it with a different tone, jackass.
You wouldn’t want to return to Earth to be mentally ill, would you? Maybe you already are, who knows.
>>
Kind of a dumb LaTeX question from me, but if I want to write "[math]x,y[/math] and [math]z[/math]", then should it be:

$x,y$ and $z$

...or...

$x$, $y$ and $z$

???????
Any strong preference between these two?
>>
>>16085206
Simply a bounded subset of [math]\mathbb{R}[/math]
>>
Which is the better overall analysis textbook? understanding analysis by abbot or analysis by Ross?
>>
>>16077910
imho
1. Navier-Stokes: apparently they're close to showing it's false (singular solutions exist)
2. BSD: we don't know how to extend current methods for special cases. Much of what modern number theory studies helps, so it's more of a collective effort
3. RH: what's sad about this one is that every single analytic number theorist has tried to tackle it to no avail. An analytic proof is decades away, if we're lucky we will have an "algebraic" proof (best possible scenario: condensed mathematics is the right framework for compactifying [math] \mathrm{Spec}\ \mathcal{O}_K [/math], and we follow the steps of the Weil conjectures to prove GRH). But historically analytical proofs come before algebraic proofs, so it's unlikely
4. Hodge: we have a lot of special cases, but nothing substantial; it feels like current GAGA results are in their infancy wrt the Hodge conjecture
5. Yang-Mills: I haven't heard many opinions on this one, but to my understanding we don't have a promising program to attack it
6. P vs NP: experts from the field tend to agree that it's incredibly hard, solving this one would probably require such advancements in theoretical CS as to make almost every other problem solved as well. I'm always baffled by this, because I can imagine someone coming up with a sort of Gödel encoding to separate NP from P; but I'll trust the experts

1 >> 2,3,4 > 5 >> 6
I can't overstate how difficult 2,3,4 are already, I've put them side to side but there's probably a power gap somewhere, it's hard to evaluate them (maybe swap RH and Hodge as well, again it's hard to say)

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she has faulty ovaries and she isnt even 30

nobody knows if this has anything to do with any vaccines

https://youtu.be/uXqnXi52tz8?t=375
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>>16083078
100% the vaccine fault. All the politicians who make it mandatory must be sent to the ukrainian front to remove antipersonnel mines with their legs, or get shot in the head.
>>
>>16083078
its syphilis.
>>
>>16083078
How many did she take?
Howbadismybatch.com
>>
>>16083078
all we can know for certain is that if it's literally any negative health situation, it is 100% definitely not caused by the vax, chud.
>>
>>16083166
>>16083319
Iron poisoning, lack of heavh metals. Have no way to determine this one, sry. But it seems likely.


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