/mg/ mathematics general -- think edition

Because the other thread is retarded.

Other urls found in this thread:

en.wikipedia.org/wiki/Multinomial_theorem
math.mit.edu/conferences/talbot/2013/19-Lawson-thefuture.pdf
web.math.rochester.edu/people/faculty/jnei/loopssam.pdf
journals.aps.org/rmp/abstract/10.1103/RevModPhys.51.591
www-users.math.umn.edu/~webb/Publications/CategoryAlgebras.pdf
math.sustc.edu.cn/event/10808.html
math.sustc.edu.cn/event/10809.html
math.sustc.edu.cn/event/10810.html
twitter.com/NSFWRedditImage

Isn’t pi like 22/7? Let’s just define pi to be exactly 22/7 and fix the test of math

>implying /mg/ isn't inherently retarded

Mathematical notation is fucking dizzying

Diagram chasing is the shit though.

Is set theory like in the pic related actually hard? I've never gone into much detail into it.

>πn(S)≅H−n(SpecZ,OSpecZ)
What have you tried?

How can I create a general rule (possibly using linear algebra) for distributing the polynomial
[math]
(x_{1}+x_{2}+x_{3}+...x_{n})^y
[/math]?

>How can I create a general rule (possibly using linear algebra) for distributing the polynomial
>(x1+x2+x3+...xn)y?
en.wikipedia.org/wiki/Multinomial_theorem

I'd tell you to fuck off, but that animefag will probably come prove it for you anyway.

sweet, thanks dude

Why was Devilman Crybaby so disappointing /mg/ ?

Judging by your pic, yeah.

i meant op's pic

hello
i graduated HS 14 years ago and i've been a neet for 8 years, and i just enrolled in a mechanical engineering course at a community college. i studied math with khan academy for a month before taking my placement test, and i placed into pre-calc.

i had three options for tech courses: chemical, mechanical and electrical. i chose mechanical because i have a bit of experience with CAD, but my advisor said electrical engineers are the most sought after but that electrical is also the most difficult.

i have three weeks to change my major. should i stick with mech or switch to electrical?

For an aspherical topological space [math]X[/math] with a fundamental group [math]G[/math], [math][\pi_1(X)]_\text{Ab}
= H_1(G,\mathbb{Z})[/math]. Try tensoring this with the sheaf [math]\mathcal{O}_(\text{Spec}\mathbb{Z})[/math].

if you just tested into algebra you might want to stick with mechanical, although there probably isn't that much difference. It depends on what you want to do. Look into what the average mechanical engineer does. However, mechanical engineering is objectively worse because it's less interesting and it's less theoretical. Thermodynamics is mostly pseudo-science and plug-n-chug. Mechanical engineers are usually people who wanted engineering money but didn't really have any particular interests. I'll allow that transistors and amplifiers are pretty fucking boring, but every other area is cool.

Then the answer is no. Obviously.

No.

Who is this nazi qt?

Yes.

...

...

Fuck you. Math is even older than Euclid.

"Fuck you."
That's just cruel.
How could math exist before Euclid if it didn't exist when he was alive?

Is it too late for me ? I'm 22 and I've recently taken an interest in mathematics and astronomy, but the most advanced maths I've done is algebra. Should I just bin this as a hobby or would I be able to dive deep into subjects after a year or two of freshing up my math knowledge?

i''m 32 and i had the math skills of a 5 year old a month ago. i studied with khan academy for a month and i placed into pre-calc. i'm a total retard. if i can do it, you can do it.

why am i such a brainlet? i get stuck on problems so easily and have no clue how to continue with them.

wtf do i do?

keep working and after a while the fog will clear

Keep trying for atleast 30 minutes, if that doesn't work you can either:
A: Go take a walk (downside is that you get nothing done and only do it for this problem, this method is good more for concept understanding or one huge problem you have to solve)
B: Go to the next problem and hope to solve previous one later.

You're wrong and I hate you. Die in a fire.

Egyptians were doing Trigonometry and other types of math as long before Euclid as Euclid is from us. Actually, even further.

Why would you say that? Merely because I'm stating the truth? It's mean and disrespectful to mathematics.

>Trigonometry
But that's not a type of math.

Then how come it's a part of math class???

Something bearing the name "math class" doesn't make it a math class.

Looks like you're too dumb to take a hint and stop spreading lies about mathematics. Now you die bitch.

And to continue from this, zhô is saying physicists and engineers etc. APPLY this math, for example analysis, in their work, but it is still math. And so we come to the conclusion that, say, calculus of variations is equal in worth to category theory, as all math is born equal.

this
fiddling randomly with variables is not math

>APPLY this math
Using math OUTSIDE of mathematics is not itself a field of mathematics, that's blatantly obvious.
>all math is born "equal"
Not invariant under equivalence.

> category theory
Not math.

It's certainly more math than the analysis physishits use.

>Using math OUTSIDE of mathematics is not itself a field of mathematics, that's blatantly obvious.
Why are you repeating this? It should be obvious already. I'm just clarifying things for our engineer friends.
>Not invariant under equivalence.
[citation needed], please refrain from replying to me ever again.

It is, but not as useful as calc of variations.

I am merely stating some trivial facts about mathematics. You need to take a step back and calm down if you think I am lying.

I've never seen a category in real life, hence it isn't math.

>[citation needed]
The paper I'm currently writing.

Go to any online store, and you will encounter categories naturally.

Please make sure you share it with me when it's done.

>online store
What makes you think these are real?

I have indirect but physical evidence they exist. You can use order theory here. Buy something and receive it. It is then a consequence of the Nye-Dawkins principle that the system in between must be non-vacuous.

how much math do I need to learn before i can post ahegao anime girls?

None. All you need is a smug sense of superiority.

>using induction
The anal beads I ordered last year still hasn't come, hence Amazon doesn't exist.

Just get a good idea of the basics of anything that has something "homo" in it.

Did you order them from China, perhaps? It took 3 weeks to get a few socks from that place.

Or a crushing sense of inferiority you mask as superiority in order to be one of the cool guys.

Fuck meant to quote >China
Ill-defined. And so are their sex toys.

The quotation was trivial. Chinese people sell cheap stuff, but I wouldn't embed any of their plastic constructions inside myself. Not even with a good covering.

The quotation was trivial up to post equivalence.
Also I shall immerse the toys, not embeds them. This should be fine with the proper water-based immersion diffeomorphism.

>all these filenames
It's all just one guy samefagging isn't it?

That is a good way to do it. Now, excuse me, as I will go wander in the cold darkness. It was fun.

[math]\neg[/math]yes.

You're not fooling me samefag.

Good night, slut.

>It's certainly more math than the analysis physishits use.
Wrong.

[math] \mathcal{FAAAAAAAAAAAGGGGGGGSSSSS} [/math]

>FAAAAAAAAAAAGGGGGGGSSSSS
Why the homophobia?

[math] \mathbb{B}_e^c \mathcal{a}^u s_e [/math] fuck([math] y\ \ \ \ ,o\ \ \ \ ,u [/math]).

MODS ARE BULLYING ME AGAIN!!! But anyway, what is a hot (not HoTT) topic in algebraic topology nowadays, and how does one get into it?

>But anyway, what is a hot (not HoTT) topic in algebraic topology nowadays, and how does one get into it?
math.mit.edu/conferences/talbot/2013/19-Lawson-thefuture.pdf

Loop multiplication: web.math.rochester.edu/people/faculty/jnei/loopssam.pdf

chromatic homotopy

Given an elementary function [math] f(x) [/math] , can there exist another elementary function [math] g(x) [/math] such that [math] g(x)=f(x) [/math] for some intervall, but not the entire domain ? Pic related.

For argument's sake, let's pretend piecewise functions don't exist.

Yes x and |x|

Obviously. One of the most trivial examples is the absolute value function and the identity.

I'll
check
these.
Thanks.

>|x|
>elementary

Yes. If you don't like the answer, maybe you should define your terms. I don't know of anyone who would consider the absolute value function to not be elementary.

Is there any non-trivial example ?

Sure. Think about interpolation.

Are you lost?

Sorry, wrong tab.

np

Would be nice if you did not post child porn here thanks

pls explain HOMOgenous coordinates

why the pedophobia?

pls get out

>zhô

If we leave the 'm' in /mg/ will really be superfluous. When was the last time a non-animefag posted something math related that wasn't a stupid question or his homework anyway? Thought so.

they're coordinates that are homogenous

Not worth it

This. Unironically.
Animefags are the glue that's keeping it together in these threads while poor engineerfags want help with their calculus homework and think linear algebra is hard.

But it is a piecewise function

Maybe other people who do know things just don't want interact with these faggots.

>Maybe other people who do know things just don't want interact with these faggots.
Why the homophobia?

I somehow doubt that.

does anyone here know anything about applications of homotopy theory

>applications of homotopy theory
To what?

journals.aps.org/rmp/abstract/10.1103/RevModPhys.51.591

Look, it's not that hard, just talk about math. If you're going off topic too much then you're asking for it and have nobody to blame but yourself.

How does one define and compute the cohomology of categories?

To applied sewing.

>How does one define and compute the cohomology of categories?
www-users.math.umn.edu/~webb/Publications/CategoryAlgebras.pdf

Three upcoming lectures:
math.sustc.edu.cn/event/10808.html 2018-01-26
math.sustc.edu.cn/event/10809.html 2018-01-26
math.sustc.edu.cn/event/10810.html 2018-01-29

Introduction to Inter-universal Teichmuller theory I/II/III

In this series of talks, we will explain the main result and some crucial technical points of the Inter-universal Teichmuller (aka IUT) theory of Shinichi Mochizuki. In the end, we also give a sketched proof of the ABC/Vojta conjecture (for hyperbolic curves), as an application of IUT theory.

In IUT, one starts with a suitable elliptic curve E over a number field F and a prime number l (among other technical data), and studies such a collection of data via certain hyperbolic curves, which are used in the theory of etale theta function. In particular, anabelian geometry (for hyperbolic curves) and etale theta function form the foundation of IUT.

A variety of geometric and arithmetic information about the elliptic curve and theta function is recorded in the so-called Hodge theater. More concretely, a Hodge theater is designed to carry two kinds of symmetries associated to a fixed quotient of l-torsions of the elliptic curve, which are represented by the cusps of certain hyperbolic curves. One of them is called the multiplicative symmetry, which is of arithmetic nature as the corresponding set of cusps is naturally a subquotient of the absolute Galois group of the field of moduli of E. The other is called the additive symmetry, which is of geometric nature since the corresponding set of cusps is naturally a subquotient of the geometric fundamental group of a hyperbolic curve determined by E and l. The multiplicative symmetry will be applied to copies of (Frobenioids associated to) the the field of moduli of E, while the additive symmetry assures that the conjugacies of local Galois groups on various values of theta function (at these cusps) are synchronized. These theta values and the number field will determine the...