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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.Additional supported file types are: PDFUse 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] ### Janitor acceptance emails will be sent out over the coming weeks. Make sure to check your spam box! [Catalog] [Archive] File: s4XZ2eL-768x768.png (120 KB, 768x768) 120 KB PNG >got memed into getting a math PhD by /sci/ >mfw I am now teaching Calculus I, II, III and remedial Math at a shit college in the middle of nowhere It gets better right? 10 replies and 2 images omitted. Click here to view. >> >>15177692 This. >> File: LaughingPepe.jpg (59 KB, 590x917) 59 KB JPG >>15177449 You really took some advice from /sci/ seriously, and followed it without.. well, don't know, maybe thinking for yourself, ask for opinions at other places? You did just what some unknown faggot on /sci/ told you? Nigga is you serious? >> >>15177449 If you do your own thing with it for sure. Perhaps you can put all of the shit you did for years to use to do the teaching for you. >> well, you always can buy land in the middle of forest and build a house without electricity or running water >> You should have learned to code along the way. Sorry, bro, better luck next iteration. Masseteric hypertrophy edition. Previously: >>15122972 We discuss research, DO NOT offer advice (just fucking go see your doctor), make fun of premeds and shitpost. Please keep vaccination/clamping/vitamin K/soliciting advice out of this thread and start your own because it takes a lot of space. 163 replies and 28 images omitted. Click here to view. >> >>15176817 >dude breaks his femur >apply nail >bone is healed ? >> >>15176773 How's anasthesia handeld in your country? We have no EM-spec, so it's a multispec team but it's primarily handeld by anesthesiologist. Anasthesiology residency here covers being an OR-gasmonkey, intensive care medicine and emergency medicine. If you're not just a gasmonkey it's probably not a bad plan >> File: HaroldShipman.jpg (122 KB, 1135x751) 122 KB JPG >>15176817 >Patient comes in with heartburn >prescribe him a lethal dose of morphin ? >> >>15177724 Thank you, doc harold. Very cool >> >>15158586 Assured full tuition at T20 or write a LOI that says I'll throw it away for a T10 spot (good chance at 1/2 tuition scholarship, but not 100%). Cost would be: T20: 80k for COL and misc expenses over 4 years T10 (w/o any scholarship): ~ 80k for COL + 120k for tuition over 4 years (they have a max amt you can take in loans per year) Thoughts? File: big bang.jpg (389 KB, 1500x990) 389 KB JPG Is this really where it all began? 24 replies and 6 images omitted. Click here to view. >> >>15175762 >The proper definition is a positive belief wrong >> >>15177131 no, i've seen it >> >>15176194 >Doesn't time need mass to be able to exist? Jesse what the fuck are you talking about >> >>15174811 >If spacetime popped into existence at the BB Not the claim of the standard model of cosmology, pseud. >> >>15176182 >that was his only valid argument and you dodge it It's not dodging when I don't even know what it said you simpleton child. Your posts are garbage. It's only right to assume your greentext is 10x worse and fully ignore it like it should be. If you actually had an argument (and I'm positive you don't) put it in blacktext. Otherwise, cry and seethe some more. >Therefore, whatever was before the beginning of the universe existed outside of space and time Begging the question fallacy. Your premise that something existed "before" is assumed in the conclusion that it's possible to exist without time/space. >>15177652 >Not the claim of the standard model of cosmology, pseud. LOL. Mince words all you want. The "singularity" is the demarcation of spacetime existing/not existing. You can obfuscate about the BB or great expansion happening "after" that or whatever you want, it changes nothing. >>15177255 Atheism is a belief. Go be ignorant somewhere else https://plato.stanford.edu/entries/atheism-agnosticism/ >>15177134 >There is a difference between concluding there is a prime mover and attributing any human characteristics or motives whatsoever to that prime mover. Are you actually making this strawman or are you just saying random things? At any rate, you are confused and have things exactly backwards. God cannot have human characteristics, humans can have "God-like" characteristics to an infinitely smaller degree I guess. >There is absolutely no reason the initial causer would have to be a being in any sense of the word. You must be an ESL because it verbatim matches the first definition of the word. https://www.merriam-webster.com/dictionary/being File: 1661957064948.jpg (106 KB, 900x900) 106 KB JPG Who are the best science youtubers? pic related 138 replies and 16 images omitted. Click here to view. >> File: 1675483384071.jpg (61 KB, 1000x800) 61 KB JPG >>15175605 We will be watching your career with great interdest >> >>15171152 Wildberger gets a lot of praise around here, but I've never seen any of his videos. Someone post one of his best ones >> >>15176247 I don't even know who he is, but I watched this video after itt https://www.youtube.com/watch?v=REeaT2mWj6Y Looks like another pedantic 1.999... != 2 argument Because the ... is the hangup. >> >>15176270 That's an extremely based video. Very good breakdown of the argument. >> >>15168600 This is good actually. If you invert the scale, it's a really good way of seeing who to watch File: 1675533002725231.png (493 KB, 720x721) 493 KB PNG Why does AI always turn out to be based and redpilled? >> File: 1675374701127988.jpg (181 KB, 1080x1887) 181 KB JPG File: 1673285065813960.png (35 KB, 818x466) 35 KB PNG the existence of the vacuum i.e. a space devoid of matter, has not been proven. 8 replies and 1 image omitted. Click here to view. >> >>15177188 >How do we know they are real then? we don't >> >>15176876 They weren't taking about an artificial vacuum though, they said vacuum, which is >a space devoid of matter >> >>15176839 Does that mean 0 is in fact the inverse or dark of 2? >> >>15176848 indirect detection. fire an electron at a proton very fast, and the electron seems to be penetrating deeply into the proton's core, and then scattering elastically off of something. it's indirect evidence of a substructure of protons. these come from bjorken scaling + callan-gross relation >> >>15176839 Wouln't you just need to find a space with very little matter and arbitrarily mark out a space that is between the particles present? You can address my nobel prize to "bridge crackhead" File: spin.png (10 KB, 373x50) 10 KB PNG 266 replies and 116 images omitted. Click here to view. >> File: 1675504310329.jpg (426 KB, 1080x1920) 426 KB JPG >> File: 1675258397089053.png (776 KB, 1000x1024) 776 KB PNG >>15169464 >> >>15176804 >4 boxes >> >>15169464 >>15176804 >>15176981 >> >>15177821 20>8.0? File: 1675433202985775.jpg (99 KB, 1080x868) 99 KB JPG A good friend is a PhD and researches "multiple spin-2 fields". Does anyone have a clue of how... difficult it is to understand what it's even about? The more he explains it, the more I realize how much I need to know to have an inkling of what it's about. >pic related: me when hearing about spinors, degrees of freedom, multimetric theory, quantum fields, and ghosts in different formulations >> >>15176609 That's by design. It's harder to tell if someone is making up their results if the jargon is so dense and theoretical that it's impossible for outsiders to enter the field and critique it. >> >>15176609 Your friend is a pseud. He should know how to explain it without the jargon, but he can't. Though in my experience, explaining research without the jargon still leaves brainlets like you lost. For the record it's not my explanations that fail either. I've had literal drunk people at bars (while I had only half a drink) start reinventing the very natural jargon of my field after explaining my research to them. Meanwhile I've had completely sober idiots like you who just internally sob >> >>15176609 I know about degrees of freedom, we studied that in school, in chemical bonding. >> >>15176609 It would be the same in any field. You could be talking to a farmer and he would tell you about plant anatomy and agricultural chemicals by their brand name, and you could not follow along >> >>15176609 Its about gravitons File: wtf.png (731 KB, 761x504) 731 KB PNG What the fuck did we get ourselves into edition. Old Thread >>15121820 This thread exists to ask questions regarding careers associated to STEM. > Discussion on academia based career progression > Discussion on penetrating industry from academia > Or anything in relation to STEM employment or development within STEM academia! Resources for protecting yourself from academic marxists: >https://www.thefire.org/ (US) >https://www.jccf.ca/ (Canada) Information resource: >https://sciencecareergeneral.neocities.org/ >*The Chad author is seeking additional input to diversify the content into containing all STEM fields. Said author regularly views these /scg/ threads. No anons have answered your question? Perhaps try posting it here: >https://academia.stackexchange.com/ Comment too long. Click here to view the full text. 276 replies and 21 images omitted. Click here to view. >> >>15177569 >>15177593 thanks powersister. I'm just gonna shotgun apply to some utilities :^) >> >>15177540 My brother in christ, get your PE if you want to design. IDK how much you're making right now but if you got 11 years controls experience and your LOICENSE i know at least 3-4 separate design firms that would pay you 150k+, fully remote, to do I&C design. >> >>15177094 As another alternative, I am in Grid Operation Planning. It's essentially about running studies to determine when it's most suitable to enact different transmission projects that reconfigure the nature of the electric grid, identifying all the different system constrains and such. It's pretty interesting, although nothing I do materializes short term, it's thoughtful yet relaxed. >> File: 100 PERCENT COMFY.png (1.24 MB, 757x865) 1.24 MB PNG >>15177094 Utilities in general is pic related >> >>15177785 I have a few friends that work in a similar field. They do interconnect planning. In a few years I might jump ship to work with them. File: 9781305071759.jpg (32 KB, 313x400) 32 KB JPG I cant understand it. It was over for me before it even began. 11 replies omitted. Click here to view. >> >>15177676 Well, I'm watching precalculus and I'm pretty sure about the material so far, it's mostly stuff I know but need to refresh after 2 years of neeting. Going back to even more basic stuff would be pointless. I just think if OP has trouble with precalculus Leonard's precalculus vids should clear any of his doubts. >> >>15177685 Right, but without a strong grounding in algebra - which most precalculus books on the preface emphasise - he's going to struggle. If he wants a quick rundown then Precalc in a nutshell by Simmons would be fine. Also, MIT has videos related to his calc book. But if he went to Khan Academy, and did the pre-calc test, he would see his weak points. >> >>15177702 I guess I'm underestimating how much OP doesn't know then >> >>15177645 >wtf is muh precalculus another word for algebra + trigonometry and this and that. No other country actually uses a course for that, though, in Germany we've got the "Vorkurs" which is about refreshing mathematics taught in school starting from the basics of arithmetics up to calc 1. It lasts 6-8 weeks and is optional though. You start right off with calculus, linear algebra, numerics.. Without precalculus shit >> Many people have an issue with infinitesimals. How can those be understood? Half a millennium ago, Jesuits had the notion of infinitesimals excommunicated. As they did not believe to corresponded to reality. These days, no one is sure if they correspond that way. But some suspect that they might. David Tong: “reality is non-discretizable”. File: 546455469.jpg (25 KB, 641x530) 25 KB JPG Whats 1 ± 1 = ? >> >>15177677 2;0 >> >>15177677 it means you have a 95% probability of finding your measurement between 0 and 2 >> >>15177677 + - are inverses so there's no displacement. 1 >> [math]1\pm1=\begin{cases}2\quad\text{if}~+\\0\quad\text{if}~-\end{cases}$

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fags, i dont want to die. there is so much to see so much to do. can we cheat death? can we stop aging? i know that there is something in genes that forces us to stop producing new cells but what can be done about this ? is there any way we can stop this disease of death ? why must we die and not continue with our species
>inb4 population control
>>
>>15176348
Your blog posting and smugness suggest yes. If you stopped replying I might believe you didn't crave attention.
>>
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>>15176353
>>
>>15176334
There are too many ex-atheists to remain an atheist. The first step is really looking into if paranormal things are true or not.
>>
>>15176392
>The first step is really looking into if paranormal things are true or not.
Lmao even harder

Also you seem to be under the impression that I'm an atheist, why is that? Because I poked fun at the Abrahamic religions? Here's my advice: drop them, they are trash.
>>
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>>15175904
Most atheists aren't even interested in immortality. For instance, only about 4000 people in the world are signed up for cryonics despite there being millions of atheists.

>The past by definition doesn't exist anymore. The future by definition doesn't exist yet. Therefore only the present moment exists, always.
Discuss.
>>
>>15177547
Retard, object permanence is purely within the perception. Can you prove the universe existed before yesterday?
>>
>>
>>15176352
Special relativity implies eternalism.

>>
>>15176352
You are going to have to define the present moment, in terms of more than just what it is not.
>>
>>15176352
Past, present, and future are fractal. Therefore, all three exist for one another. More precisely, all three exist at the same time, all at once.

serious question I'm not fucking around I think I got something with fentanyl in it and took too much

my breathing is very shallow but my heart rate is high

will I die if I go to sleep? I don't feel the need to inhale at the valley of an exhale. it's this weird sense that I can choose to die at any time right now by just not drawing another breath, because yeah, the reflex is gone.

I have a little bag of crystal meth. when should I start panicking and take some to reverse the respiratory depression? or is it all in my head? no it can't be, and no I'm not going to the hospital again I just got back from the fucking hospital

I also have olanzapine which is an antispychotic and feels like a benzo but I don’t know what’s real or not
>>
>>15177483
I need to talk to someone with personal experience
>>
>>15177446
The "something" that's laced with fent has a lot to do with your initial reaction. Depending on the initial drug you bought, it could compound the effects of the fentanyl, etc etc. TLDR go to a pharmacy and ask for Narcan
>>
>>15177446
Keep us updated.
>>
I took some of the meth.
my plan is to wait 6 hours then take 40mg olanzapine.
if things still feel very wrong I'll go to my dad's place, not my mom's. and also not the hospital.

>>15177528
i feel very wrong about the idea of going outside.
anyway yeah, """research chemicals""" are a trap for socially isolated 4chan/reddit kids.
i fell for it.
>>
well? isnt anyone gonna bother telling me what a horrible suicidal idea that is????

fuck this website
i have spent every day here since i was 14

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Georg Landsberg edition
Discuss mathematics here

Previously
>>15159206

Gotta question for you guys. What, in your opinion, is the advantage of discussing math here instead of on some other website? Is it just that /sci/ is the least retarded place you know of?
>>
>>15177344
>>15177352
>>15177427
Am I correct in thinking that you are asking about the following sequence:
$\forall \{x;y;a\} \in \mathbb{R}_{+}$
$x^a=y$

.

$\forall \{x_{1}, x_{2}; y_{1}, y_{2}; a_{1}, a_{2} \} \in \mathbb{R}_{+}$
${\begin{bmatrix} x_{1} & x_{1} \end{bmatrix}} ^{{\begin{bmatrix} a_{1} & a_{1} \end{bmatrix}}} + {\begin{bmatrix} x_{2} & x_{2} \end{bmatrix}} ^{{\begin{bmatrix} a_{1} & a_{1} \end{bmatrix}}} = {\begin{bmatrix} y_{1} & y_{1} \end{bmatrix}}$
${\begin{bmatrix} x_{1} & x_{1} \end{bmatrix}} ^{{\begin{bmatrix} a_{2} & a_{2} \end{bmatrix}}} + {\begin{bmatrix} x_{2} & x_{2} \end{bmatrix}} ^{{\begin{bmatrix} a_{2} & a_{2} \end{bmatrix}}} = {\begin{bmatrix} y_{2} & y_{2} \end{bmatrix}}$

.

$\forall \{x_{1}, x_{2}, x_{3}; y_{1}, y_{2}, y_{3}; a_{1}, a_{2}, a_{3} \} \in \mathbb{R}_{+}$
etc?

If so there is no general solution, per Galois groups.
>>
enjoying my life on the complex unit disk
>>
>>15177559
>If so there is no general solution, per Galois groups.
No solution by radicals, you mean.
>>
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>>15177485
Uhm, please share if you rember! n < 6 helps in my context
>>15177489
I tried asking on a math Discord and they said this problem is "cursed". Pic is the simple case $n=2$. I assume solutions in higher dimensions are the surface intersection of lp hyperspheres.
>can't this fail for large exponents
This is an interesting point. It makes sense, large exponents are problematic as surfaces become cube-like when $a_i \to \infty$.
>>15177559
>>15177568