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# /edu/ - Education

'The weapon of criticism cannot, of course, replace criticism of the weapon, material force must be overthrown by material force; but theory also becomes a material force as soon as it has gripped the masses.' - Karl Marx
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No.338[View All]

All good communists study math.

What are you studying right now? What is your favorite field of mathematics and why?

Personally, I really like the book "Linear Algebra Done Right" by Sheldon Axler. It is on Libgen if you are interested and I attached a pdf.
145 posts and 25 image replies omitted. Click reply to view.

No.6980

>>338
How do you anons stop making basic blunders in exams? I fuck up the basic math and make stupid mistakes, and then I end up ruining the whole question. My grades are suffering because of it, even though I have a good grasp of the advanced stuff.

No.6981

File: 1630780649895.jpg (26.36 KB, 609x751, 1627970118659.jpg)

No.7466

Does anyone here have maths as a "hobby"? If so, what do you do, just solve textbook problems for fun? Or is there something like Github for mathematics where amateurs can contribute to open problems?

No.7838

File: 1633369020267.png (3.07 MB, 776x5164, 1558576007091-0.png)

No.7840

>>7838
math is so overwhelming

No.7841

Reminder that Marx developed calculous independently from other mathematicians
https://www.marxists.org/archive/marx/works/1881/mathematical-manuscripts/

No.8050

>>7841
That's not what the link actually says.

No.8052

>>8050
yeah I screwed up. he didnt develop calculous but differential calculous.
I was thinking about Leibniz, mb

No.8057

>>6632
Late on this but there are none. Quantum computers are computationally equivalent to Turing machines

No.8058

>>6980
>I fuck up the basic math and make stupid mistakes, and then I end up ruining the whole question
Iktfb
And to be honest I never really figured out how to deal with it, I just lucked out and managed to not make enough blunders to pass. But something that kind of helped was really slowing down and doing nearly every calculation by hand, writing down all the steps for the question instead of just diving in, etc.

No.8115

File: 1634294994481.pdf (527.84 KB, 232x300, short-math-guide.pdf)

No.8120

Do any of you know a good collection of geometry problems? Something that I can think about when I have nothing better to do. I want to train my visual thinking.

No.8121

>>8120
NTA but can anyone drop me some Geometric Trig please? I did Calculus in college but I've basically forgotten it at this point.

No.8122

>>8121
http://www.mecmath.net/trig/index.html
> This is a text on elementary trigonometry, designed for students who have completed courses in high-school algebra and geometry. Though designed for college students, it could also be used in high schools. The traditional topics are covered, but a more geometrical approach is taken than usual. Also, some numerical methods (e.g. the secant method for solving trigonometric equations) are discussed. A brief tutorial on using Gnuplot to graph trigonometric functions is included.
> There are 495 exercises in the book, with answers and hints to selected exercises.

No.8450

>>748
i doubt theres any mathematical value besides proof verification. contrary to popular belief, mathematical thinking is precisly what cannot be formally reduced to modus tollens. the likes of agda or lean may be of interest to logicians or TCSists, but can hardly assist mathematicians with their work

No.8452

>>8450
also im happy to find a math general on leftypol. though i think marx's math manuscripts showed his poor understanding of the state of mathematics then

No.8506

Number theory, counting, comparisons, ratios, addition subtraction multiplication division, exponentiation, negative exponents, rooting, factoring, GCF, LCF, primes, prime factoring, distributive property, adding like terms, fractions, order of operations, variables, isolating variables, polynomial equations, graphs, discrete and continuous values, difference, rise over run, y = mx + b, quadrants, points, lines, polygons, circles, higher dimensional topology, angles, soh cah toa, algebra with sohcahtoa, trig functions-1, perimeter, area, surface area, volume, units, unit conversion, si notation, significant digits, measurements, estimation, rounding, patterns, circumference, diameter, radius, y = x^2, y = a(x - p)2 + q, y = ax^2 + bx + c, x = 0, x int, y int, x = (-b +- sqr(b^2 - 4ac)) / 2a, a^2 + b^2 + c, itg(x -> 1/0)*dif(x), transformation, translation/reflection, rotation, radians, unit circle sin = y val & cos = x val, Pi * rad = 180deg, analysis, sets, coordinates, groups, mapping, matrix operations are about the operations on coordinates from vectors

No.8550

File: 1635980982019.jpg (152.57 KB, 914x960, 1635941534428-3.jpg)

Can anyone of you guys link any torrents or megafiles that can give me a comprehensive reading list of books pertaining to self teaching math?

No.8555

>>8550
Well not a torrent or megafile, but you can search all these books on libgen I reckon >>2922

No.8717

>>8555
Thanks

No.8985

File: 1639926858435.png (6.05 KB, 740x380, proof.png)

>>390
pink = all - 4 green = red + blue

>>404
The rocket pigs version: https://bartoszmilewski.com/2014/10/28/category-theory-for-programmers-the-preface/

>>493
>differs from sets to avoid Russel's paradox?
The standard solution is based on von Neumann's work and predates category theory. Cantor's naive sets are renamed to classes. Classes are partitioned into sets and proper classes. Sets are those classes that can be built up using ZFC, which removes unrestricted comprehensions. You can no longer take "all X [with P]", you have to take "all X from S [with P]" where S is already a set. The question becomes whether the class of all sets is a set. The resolution to Russell's paradox is to provide the negative answer by becoming the proof that the class of all sets is a proper class rather than a set.

No.9033

File: 1640036083879.jpg (34.34 KB, 655x527, 02f.jpg)

How to keep myself fit when it comes to mathematics? I had analysis, linear algebra and probability theory and I'd like to keep myself fit so my knowledge and capabilities don't atrophy. Do you know any websites with plenty of exercises?

No.9042

File: 1640174261184.gif (940.02 KB, 498x280, crying yoko.gif)

Why is math so hard?

No.9060

File: 1640267707310.jpg (4.4 KB, 225x225, images.jpg)

>>9042
Not as hard as this dick haha, am I right fellas

No.9061

>>9033
I would be interested in this too, as I have already forgotten much of what I studied in university. Would Anki help?

No.9138

Anyone here reading more "historical" mathematical texts? I've started reading through Bourbaki's theory of sets, just to kill some time until I go to university. Its a little incomprehensible to a brainlet like me, but its very nice to read about mathematical concepts that don't get much or any use these days.
>>7466
Amateur mathematicians aren't taken very seriously by academics, because a lot of quacks come up with "solutions" that are blatantly incorrect. All of the open problems require a lot of study to even understand, or exist in highly specific fields. If you want to study math for the hell of it, just pick up some books on the fields that interest you and read through them.
>>9033
Not sure if any website with exercises beyond high school level math exists. Getting a textbook in the topic you'd like to brush up on, and looking at the exercises in there should work. Skimming through the chapters might also be a good way to see if you've forgotten anything too.

No.9139

>>9138
What about stuff like this? Does it no longer happen?

No.9141

>>9138
>a lot of quacks come up with "solutions" that are blatantly incorrect. All of the open problems require a lot of study to even understand
Counter-example to your second claim: Collatz conjecture (also a great example for your first claim).

No.9154

>>9141
Do you mean to insinuate that the Collatz conjecture is misleading?

No.9155

>>9154
How do you solve word problems with a reading comprehension like that?

No.9168

>>9155
?
First claim in the quote you've addressed is 'a lot of quacks come up with solutions that are blatantly incorrect'
Second claim is 'all of the open problems require a lot of study to understand'

No.9169

>>9168
I'm not that anon lol. The Collatz conjuncture is easy to understand, which contradicts the claim that
> All of the open problems require a lot of study to even understand

No.9475

File: 1642884362013.png (19.9 KB, 640x480, plot.png)

Why is the maximum of $$\sqrt[x]{x}$$ at e?

No.9478

>>9475
f(x)=x**(1/x) => f(x)=e**((1/x)*ln(x))

f'(x)=x**(1/x)*(1-ln(x))/x**2

f'(x)=0 => 1-ln(x)=0 => x=e

x<e => f'(x)>0 \
=> max
x>e => f'(x)<0 /

No.9480

>>9155
cute and aesthetically pleasing reaction image
i am monke

No.9481

>>9478
Yeah that's how I found it but why is that the case?? It's very suspicious.

No.9483

>>9481
>pose problem involving exponentials
>wtf why does e suddenly appear?

No.9731

does this video have to do with mathematics
is maths the way to solve wordle the best?

No.9747

>>9731
I don't have time to watch the whole thing, but at the beginning it looks like they just tried out every combination ever? That doesn't sound very mathy.

No.9749

>>338
Math is the biggest waste of time

No.9750

>>338
someone here redpill me on the concept of infinity

No.9773

>>9750
iz big

No.10112

are you here {}anon?

No.10113

can we continue with you responding to
>>>/leftypol/873853 here?

No.10114

File: 1648014604783.png (5.45 KB, 832x114, ClipboardImage.png)

>>10113

Wolfram is interpreting it as the absolute value and not cardinality of sets. (See pic 1)
>you can't have a set without an empty set, no?
Can you clarify this question? Are you referring to the construction of natural numbers starting with the empty set?

No.10115

>>10113
NTA but reposting a link (archived version is available).
https://math.stackexchange.com/questions/283/is-0-a-natural-number

No.10237

Another day I didn't study. Why do I do this, the exam session is about to start aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

No.10404

>search page 0 results for optimization or operations research.
You're not being good central planners with this attitude.

No.10405

>>338
Math seems like such a massive field that It would be impossible to master in a lifetime unless you have a specific interest or use it for practical purposes.

No.11679

>>10404
we're all in the /cybersoc/ thread

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