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/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.Use TeX with $tags for inline and [eqn] tags for block equations.Right-click equations to view the source.  08/21/20 New boards added: /vrpg/, /vmg/, /vst/ and /vm/ 05/04/17 New trial board added: /bant/ - International/Random 10/04/16 New board for 4chan Pass users: /vip/ - Very Important Posts [Hide] [Show All] ### Self-serve ads are available again! Check out our new advertising page here. [Catalog] [Archive] File: Knot_table.png (32 KB, 350x261) 32 KB PNG Given the apparent lack of supersymmetry is there any grand unified theory or theory of everything that's actually looking promising at this point? 10 replies and 1 image omitted. Click here to view. >> >>12397178 It was 99 for around 6 months to pay off the time spent developing it. Those who helped support the project during that time know who they are. It's free now. The goal was to create the deepest "mental model" of reality possible, one supported by the most based scientific principles possible, essentially a new more optimum cognitive framework that can easily accessed mentally. I.e. a more optimal model of base understanding. And yes, we really did unify physics and you would be surprised how any people working in tech are adopting optimum principles. Why do we do it? Idk, why do people spend ours working on Wikipedia? The basic idea is that optimizing human understanding helps all of us. >> >>12397290 >surprised how many people working in tech are adopting optimum principles. >> >>12397290 Allow me to shed a tear >> >>12397306 For what? >> >>12397353 For the heroism of you people. File: 371-3710674_pepe-brain.jpg (282 KB, 820x652) 282 KB JPG Apparently it's hard for many people to focus on things, learn, or complete tasks/projects. Why can't you just fucking sit down and do it? What is brain fog and why does everyone have it? I can sit down, open a book, and learn stuff. Apparently others have hard time with simple stuff like this. It's in the fucking book, just read it and digest it. Why can't you just learn things? My mind is very clear and I always thought that was normal... How can I avoid becoming brain dead/fog like so many other people? >> >>12397207 Dude I’d love to link a psych paper or something with good research on it but I just got out of the thread where they were talking about how there’s a reproducibility crisis in that field so idk man we may have to wait like a decade or two for them to clean up their studies first Always read the fine print. >> >>12397087 >charging for healthcare >it isn't even tested Do Americans really? >> >>12397087 have you not been paying attention? Trump has been bragging about operation warpspeed for like 6 months. >> >>12397087 Hey we dodged a bullet, at least Elon Musk isn't getting a dime of that government money File: 1598407812746.jpg (36 KB, 720x765) 36 KB JPG What is it about psychology that attracts to many females to it? Most psychology majors are female (about 72% depending on the source) and every other girl i know either wants to or is majoring in psychology. 15 replies omitted. Click here to view. >> >>12395513 med school is filled with women tho. Women tend to go for "romantic" degrees while men go for practical ones imo. >> >>12395513 med schools usually have even gender ratio >> >>12392991 Remember when you were a kid and you read about geniuses and were like "wow that's awesome that people are that smart and accomplished such things"? Well guess what. Women think in terms of people and therefore they think knowing everything about human behavior is just like being Einstein. From a woman's perspective, the smartest human ever was whoever knew the most about how people's brains work and nothing else. >> >>12395400 This >>12392991 Slightly lower iq. *relative* to offer college goers (not the pop at large). The male psychologist majors also often have reatlive lower iq. >>12392997 Also this, see the chimp toy study. >>12393007 >>12393342 I would never send a male to a female psych. Females will never understand male sexual drive. If you told them you jerked off 5 times in one night at 19 years old they would freak out. They are also usually not the best for even child psychology. I am sure there are exceptions. Actually just in general 70% of psychologists p, male or female, are useless, they have also almost all have taken the blue pill on psych drugs, despite the fact that shit makes most young people worse outcome over 10 years and exercise and diet and getting away from thier parents has proven to work much better for most cases. >> >>12397297 >the smartest human ever was whoever knew the most about how people's brains work and nothing else. That’s right though File: 1605718357307.jpg (52 KB, 874x665) 52 KB JPG Last time I grabbed a math book was back in 2011. I need to recap and improve my math knowledge on vector analysis so I can make proper scripts for 3D software, therefore I want to ask you: >what's the best PDF out there to re-learn trigonometry and analytic geometry? >what's the best pdf out there to re-learn calculus? >same about statistics >same about coding in general I need your help bros 1 reply omitted. Click here to view. >> >>12397169 I missed that you wanted to write programs. You will also need theory of non-deterministic state machines, operating systems, programming languages, and graph theory. >> >>12397189 You simply don't suggest Rudin to someone who hasn't grabbed a math book in almost 10 years >> >>12397194 >You will also need theory of non-deterministic state machines, operating systems, programming languages, and graph theory. Each one has a book of its own right? >>12397189 Bruh, my IQ is 106, be nice with me >> >>12397197 >>12397211 ngmi >> >>12397220 I... I-I will make it File: 9783540047582.jpg (41 KB, 153x232) 41 KB JPG Say if I have a strong foundation in measure theory and can pick up probability theory quickly. Do you guys think that is sufficient background for a course in stochastic calculus or do you think functional analysis and pde theory would also be needed to understand it? Pic related is the text we will be using. >> SDE involve very little amount of measure. It's mainly analysis and probas. Functionnal analysis is useless. Sure you will study operators but because you are on a probability space, the usual theorem like Hahn Banach or Banach Starsky or Baire will be useless, same for the distributions (i'am talking about the Schwarz ones). >> >>12396350 Oksendal goes hard on measure theory when doing proofs. It is definitely a good idea to know measure theory if you want to understand the text fully. >> >>12396350 >>12397137 It is not necessary to know functional analysis and PDEs to do intro stochastic calculus. However when you will derive the Kolmogorov equations, PDEs will pop up, and to solve them you have to know some PDEs techniques. >> >>12397140 Do the pde techniques involve functional analysis? What's the quickest way to pick up those techniques? File: 1.png (558 KB, 1106x1012) 558 KB PNG Is it possible to represent [math]\sin\left(\sqrt{2}\right)$ in closed form using only elementary functions, without using the imaginary constant or other trig functions?
>>
>>12397264
It shows correctly in preview when I do it
>>
>>12397267
The.
Entire.
Meme.
Image.
>>12397249
>>
$\sin \left( \sqrt{2} \right)$
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>>12397268
Thanks based anon. I get it now.
>>
[eqn]\sin\left(\sqrt{2}\right)[/eqn]

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Could it work?
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>>12397158
Nope. This was disproved by Barnett's paper on barnett-integrable spaces.
>>
theoretically yes, but there is no known material or construction that could put up with the stresses and be light enough

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I think I have a rough understanding of how we can create a "UFO"

Of course, we should all know what superconductors are and what they do, now from my understanding, the earth has its own magnetic field. What if we can utilize a large superconductor that can quantum lock onto the earth's magnetic field? Would this work?

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What are some new physics discoveries that are borderline esoteric?
>>
>>12396919
are you looking at you?
>>
>>12394725

That private sector has already unified physics, that the basic principles of unifies physics can be proven simply using a Von Neurmann data matrix such as Microsoft Excel, and that a chip company called Cerebras has leveraged these principles into a new chip architecture that can already render photoreal macroscale graphics (physics) faster than reality using a machine that fits on your desktop.
>>
>>12396780
Anon I’m curious, what’s the difference between normal photons and gauge bosons? Not that high up in physics yet.
>>
Are room-temperature superconductors esoteric?
>>
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>>12394725
I discovered that you shouldn't save thumbnails like a dildo licker

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How do you go the alternative answer and how do you simplify it?
I know that (x+2/2sqrt(x))/(x+2)^2 can be written as x+2(x+2)^2 / 2sqrt(x) but from here i'm lost.
>>
>>12396091
The first term is of the form (a/b)/c=(a/b)(1/c)=a/(bc).
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>>12396108
Thanks dude, that actually helped.
>>
$sqrt(2)$
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>>12396074
for the very first expression, split the fraction into two via the minus sign, then cancel the (x+2) on the left and multiply by 2sqrt(x) on the top of bottom for the same part of the expression.
>>
>>12396074
$/sqrt{x}$

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how many of you didn't care about a particular grade for a course because you found out the professor was a dumbass?
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>>12397142
>GE required crap
>take music theory because how hard could it be
>professor is in his late 70s and announces he is is the middle of chemotherapy
>Find out I’m effectively tone deaf in the class, can’t tell the difference between baroque & renaissance & gregorian
>first test was identifying the era of pieces by ear and marking a scantron
>get a 19% everyone in the class has an extremely low grade
>professor ran the tests through the grader using the wrong key
>did the same on the second test
>stop attending as it was too late to drop
I genuinely feel bad for him as he was working through the chemo to keep his healthcare, he died a few months after the semester ended
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>>12397179
not what I'm talking about, sad story. My problem is with a tenured upper division DE professor who lectures on synthetic division and multiplying matrices while heavily marking off small calculation errors as well as grading subjectively. This is at a "competitive" state uni. The brainlets in the class love him because the course is essentially a review of Calc 2 and Precalculus with just the minimal amount of DE material.
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>>12397208
DE?
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>>12397222
Differential Equations.

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What's the most chad subfield of mathematics and why is it set theory?
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>>12396875
Who needs god when you have the empty set?
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>>12396875
oh is that my main man Zarathustra?
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>>12392302
>string of strokes on a whiteboard
You again?
>>
>>12392268
Type theory. Sets need to go.
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>>12397185
You can still do set theory in type theory, and vice-versa.

Is there any truth to this bullshit theory?

I hate it because I was naturally good at art and drawing as a kid, like prodigy level.

So some fucking teachers told me, "Oh anon, you are right-brained, you don't like math!"

My dumb little ass believed them and I built my identity in being a right brained math hater.

Well then I got exposed to calculus senior year and I loved it, which eventually led to my engineering PhD.

I could have been a mathematical prodigy but some dumbass teachers plagued my mind with left/right brain bullshit.

YOU CAN BE BOTH! DONT LIKE DUMB TEACHERS TELL YOU CANT!
>>
>>12395968
There is only big brain / smol brain
Left/Right is astrology for psychologists.
>>
>>12395968
Yes. Only the front left side is connected to the cerebellum in neurotypical people. The right hemisphere only hangs to the left one, while the connections to the cerebellum are lost.
>>
>>12395968
Not a neurologist so I can't comment on the brain theory, but I can comment on the fact that researchers in math are assumed to be some kind of "left-brain" analytic faggots.

There is a meme dichotomy in math between "analysts" on one hand and "algebraists" on the other.

Analysts are allegedly all about sperg-level considerations in proof tinkering. They don't give a shit about the apparent mess of their objects of study and gladly prove grand theorem without really caring for the underlying structure.

Meanwhile, algebraists are favouring language as a way to solve problems. That is, if you find the right way to state a problem the solution will become trivial. The same object can be approached in two very different ways depending on your tendency towards one side or the other.

Funnily enough, the same dichotomy exists in theorical computer science between Track A (~ analysts) and Track B (~ algebraists).

Both approaches have their advantages and their defects. I, being a hardcore algebraist, am pretty upset by some research fields, but it's fair to recognize that they get the work done without getting lost into circlejerk details about the abstract statement that would make their result more appealing. And the extreme variant of algebraist known as category theorist are really obnoxious.

Still, you could perfectly do maths being a "right-brainer", whatever that means. Just stick to fields that are more algebra-friendly.
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>>12395968
It’s a cope by a anyone that can’t handle STEM
>>
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>>12395968
iirc each hemisphere has different set of functions which on can more or less identify with tools for stuff you've never encountered vs tools for stuff that's similar to something you've already encountered? but the part about being right/left-brained or using only one of the hemispheres for certain tasks is false

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how did bufalo evoluve?
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>>12396129
By eat grass
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>>12396129
By not mating with your mom.
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>>12396129
slowly
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>>12396129
> how did bufalo evoluve?
Because of natral seluction.
>>
aigth so boom, they were some cow looking niggas out there chilling proly like half a milli years ago.
They were chilling then everything got cold asfuck becase idk brah, they said siome like
>yoooo, it's cold in this bitch, im finna die son
but one of those cow niggas was born with a mutation in they furs and shit so he got warmer.
cow looking hoes said
>damn, all of these niggas dead; yo look at that nigga, he didn't freeze, he looking all fly and shit, Imma get pregnant by that bull looking ass mofo.
Then his son got inside his genes the mutation that gave him fur, then they hoocked up again and again, niggas that had that jacket on survived and niggas that didn't died.

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