I want to work through category theory for the working mathematician by Mac Lane and the followup book Sheaves in Geometry and Logic by Mac Lane. I have a PhD in pure math but I'm somewhat slow and not the brightest. I was looking for someone who would be interested in working through these books with me or someone who already knows the subjects and would be able to check my answers to the solutions. I intend to try to solve every exercise.About me: I'm very friendly and silly and like anime
>>16914575I might not even recommend it, but outdated seem a bit overboard.There's nothing in there that's superflous now, is there?Maybe it doesn't go with type theory trends etc., but like learning about ring theory, or number theory, a 70's book is fine for algebra.
>>16904996What was the topic for your doctoral dissertation?
>>16916540this
>>16907531>muh aikys>>16905199>ai da foochur>muh aikys>t. arithmetic geometer 140 IQ
>>16918891Unironically, how are you writing papers in arithmetic geometry with such a low IQ?
What is the scientific explanation for the gap of photographs showing stars taken from above the mesosphere?
>>16917403
>>16917405
>>16912660Looks exactly like an ESL scary game Aris plays on twitch.
>>16906962Ask Grok you retard.
>>16918883>muh ai!kys
Posting on 4chan now actually raises your iq
>>16918468I have fun on here fellow 4channer wassup!
Hello scientists, is it scientifically feasible to store your burps inside a jar or a bottle?
>>16918811lool
can anyone decode what this image means. i think it was supposed to be a hypothetical extra terrestrial message. pretty sure the first part is depicting a numerical system. also anyone know where this image came from?
Bottom right would be a size ratio yard stick of some type. A tree on their world, or their lifeforms body maybe for scale to use as the tape measure in ratio against some measurement system scale. Atomic structure in comparison perhaps.
>>16918687It's from this, which is the result if you reverse search your image.http://necrobones.com/seti/arcturus/
Why is abstract algebra more coherent and intuitive than linear algebra?
the trick is to learn it in your spare time
"Well, er, yes Mr. Anchovy, but you see your report here says that you are an extremely dull person. You see, our experts describe you as an appallingly dull fellow, unimaginative, timid, lacking in initiative, spineless, easily dominated, no sense of humor, tedious company and irrepressibly drab and awful. And whereas in most professions these would be considerable drawbacks, in linear algebra they are a positive boon."
>>16910908>more coherent as if there were degrees of being coherent.
>>16918371there are if you're not autistic
>>16918571yes, yes, great comeback. now show me a definition of coherence that admits gradations.
What is the most Reddit branch of mathematics?
All of "pure" mathematics.I mean in the sense of function and use of the math in question."Pure" category theory is fine if you intend to apply it using functional programming.Infinite categories, and abstraction for the sake of abstraction and "how far can we go with the rules of our language game" in general, is pure Reddit.
>>16917418>the one field that gets less interesting the more you learn about itYou put it perfectly. At least other useless areas remain interesting as you delve into them. Fractal geometry fucking sucks.
>>16917418You have to remember that >>16917552 is just another fractal expression of the filter that mogged you.
>>16917339I agree.
bump
What, you need more?
>>16914250why are category theorists not taken seriously?
>>16912945A pencil and an eraser. Eraser is optional when you never make mistakes but the blood is just annoying
>>16912945a trisected angle would be nice
>>16915377Or even a square with the same area as a circle
>>16912945yep
How come this very bright shade of green never existed in the world before we discovered it via RGB light? There's something almost unnatural about it.
>>16916873>mentally ill retard gets filtered by the fact that there is a difference between how things look in real life vs. how they look in a photo displayed on a screen
>>16914563This is indigo retarded retard
>>16914474>never existed[citation fucking needed]also, color is a continuum. you could say this about any color, unless you think (which you seem to), that colors are discrete.
>>16914474>>16914501assuming you're talking about monochromatic green light, people have known since isaac newton's time how to make that (with a prism and a thin slit).
>>16915531Btfo
What's the /sci/ opinion on SSA metallurgy? The idea that blacks basically leaped from the late stone to the iron age with some high level of independence is almost unbelievable, but there's some actual evidence for it. Such a potential past is so interesting that I'd be greatly dissapointed if anything else were true...
>>169175841) the point is that technology flowed from west africa to the rest of subsaharan africa, so if they already had bronze, they couldn't as well have transitioned from stone to iron, the bantu got their iron from west africa and transmitted it to the nilotes, khoisan, the pygmies and the hunters and gatherers of east africa, the dorobo, ogiek, hadza, etc, the only other places that maybe had it were the horn and north africa, but it likely had already been transmitted from the middle east, the same case goes for domestication, africa already had camels, donkeys and even cows--the zebu kind that is different from the auroch ancestor of europe and central asia--already domesticated, so africa was not some stone age hunter gatherer back water where europeans brought everything like poltards would have you believe, we need to get rid of this kind of retarded thinking, same case goes for subsaharans mating with a ghost species--it might be true but is completely retarded hill to die on since any two random humans regardless of race have less genetic diversity btn them compared to chimps--our closest species, wolves, dogs, etc, yes that is crazy when you are looking at phenotypes but is an actual fact, on average, the largest genetic differences are largely due to in-population differences rather than btn two populations--the genetic variation btn two people in the same population, a village, or a tribe is greater than that of two people from different populations, an example is your neighbour or friend might be taller or have autism compared to you, that difference is observed in another population in another corner of the world, so in this sense, you are less genetically diverse from a person who isn't taller or who doesn't have autism but is considered a different race,
>>169175892) and this is all due to the fact that there was a genetic bottleneck that happened 75k years ago that left maybe 2 to 10k humans alive, and those humans interbred with each other and led to what we currently have today
>>16917589>the genetic variation btn two people in the same population, a village, or a tribe is greater than that of two people from different populationsI've heard this claim before and it's still bizarre people try to claim it.Small local populations will all share a significant number of recent common ancestors, yet apparently they didn't inherit the same DNA from those ancestors?Can someone convincingly explain how this is true? I don't mean schizophrenically explain it, or ideologically and aggressively explain it, I mean explain it in a way a well-adjusted person would respond to.
>>16918072>Small local populations will all share a significant number of recent common ancestorsif those common ancestors were common enough, they would be inbred, but this doesn't happen on average so its not true
Yuck.
140 IQ is peak midwit tierOfficially tested at 140IQ and I am a midwit. If I had 10 more IQ points I could be a Quant at Jane Street making 500k, and if I had 10 less IQ points I would have had the same outcome (albeit with slightly more studying) and been significantly less autistic.Instead I am stuck doing electrical engineering at a barely T100 uni here in the US. I will probably land a mid tier electrical engineering job after I graduate making 90k, and will struggle to afford a house and kids. Meanwhile the 120iq finance fratbro will land a wallstreet job at his daddys firm making 250k a year and the 160iq asian nerd will land a 500k quant job. The 80iq stacy will make 1m a year from her onlyfans or sugar daddy.I know multiple people who are 150-160IQ, and they are on a different level. It took me several months to reach Expert on codeforces but these niggas got to that level almost immediately, and ended up at CM/Master within a similar timeframe. You can't compete against them.For anyone in an actual STEM field (No biology or other women tier 'STEM'), 140IQ is midwit tier. You need 150+IQ to truly make it. It is a sad world.
iq astrology is dumb
120 is the minimum I.Q. for a surgeon in the U.S. Baseline minimum entry level It starts at 120 and goes upThey do not screen for it per se, but it naturally filters into that screening from the rigorous testing protocols that weed out the lesser intellects with less information memorization and retrieval abilities. Its a real statistic.
>>16918572i don't think a single number you score at a one time test that doesn't even analyze your brain function on a biological level can summarize how good all of your brain parts with all their different functions work as a single unit and even if that was the case, there'd be still differences in how developed each part of your brain is resulting in unique ways of thinking meaning that how fast you learn smth will always depend on what exactly you're trying to learn and how that works with the proportions of your brain...but even if that was irrelevant, your past experiences and the knowledge you already accumulated would change your perspective on any topic beyond just learning at a faster/slower pace anywayt.ired ass mfer, don't quote me on anythingps:>if I had 10 less IQ pointsaka if i had missed my cup of coffee on test day or some shit liek that
>>16918572you can be a le janestreet quant with 120 IQyou need sufficient intelligence but it's a lot more about consistency, qualifications, interview/people skills, and of course nepotism helmsbut yeah you aint gettin into jane with your T100 EE degree lolit's fucking gay there anyway trust me bro
circular arguments arent invalid tho...
>why the fuck would i know how to spell things hurrrrrrr>formal logic is not math because math can't be heckin' reduced to formal logic>look up heckin' goodelSome real mouth-breathing, tar-black gorilla niggers on this board today.
>>16918554no I didn't say I didn't know how to type it I said why the fuck would I? fucking kill yourself faggotAnd keep being a fucking idiot taking every scrap of bait you stupid nigger, I'm sure people wasting their time reading this stupid thread will think you're the smart one right?
Tar-black and stupidThe gorilla nigger postsPlease help me, moonman
>>16918353My axiom is that i'm always wrong, including this axiom.
>>16918583liar's paradox moment
/sqt/ - simple questions thread (aka /qtddtot/)Previous thread: >>16856845>what is /sqt/ for?Basic 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/scieientei.xyz/sci>how do I optimize an image losslessly?Comment too long. Click here to view the full text.
>>16918347This is not a console bro. How about more precise.>>16918348And you are the goddang professor. Archaic literal fossil of its Einstein, duh. Actually no, you can't even make a four letter linear math of it.
>>16918464Why are you mentioning the weak force? The nucleus us bound by the strong force, the electrons by the electromagnetic force.
>>16893204Is she the girl who solved that old harmonic analysis problem?
I suck so much at solving equations and factoring. I hate myself so much, how can I get better at it, anon?
>Yoda bird nasal noiseIf object has predefined actions, how would it's distance per frame be"There.
Are mammals really nothing more than complex automatons? If so, how is the alleged real suffering of a talking primate any more meaningful than the artificial suffering of an LLM?
>>16918469>there seems to be a more-than-the-sum-of-its-parts aspect to consciousness.only from inside platonic ontology
>>16918481Imagine a world where you'd have had sex and this seething incel post wouldn't exist. Zero fun in that.
>>16918497Imagine anything at all. You literally can't.
>>16918469>cognitive scaffoldingFaggot tranny child raping mods won't ban this obvious bot.
>Consciousness is fake>NOOO YOU CAN'T JUST SAY FREE WILL IS FAKE
The twink is at it again https://youtu.be/OC7sNfNuTNU
>>16918375Actually, his experiments saved me a lot of time and money.
>>16918375scientifically speaking, he's pathologically high test
