/sci/ - Science & Math

>>11828230
I literally opened the thread and responded to the pic. Fucking damned if I give a shit about what other people said.

>>11803366
Oh trust me i do, but my education is almost free here in europe so i don't mind.

>tfw you finally understand math and see how everything is related after watching wildberger videos

>>11457310
Because that's what we want b b b bitch!

/sci/ can't disprove the fine tuned theory.

all the alternatives are equally non falsifiable pseudoscience.

*proves your theorem is equivalent to the axiom of choice*
what are you gonna do about it?

In a plane there are [math]100[/math] points, no three of which are collinear. Consider all possible triangles having these points as vertices. Prove that no more than [math]70\%[/math] of these triangles are acute-angled.

>>11156023
Let [math]V[/math] be an [math]n[/math]-dimensional vector space, [math]B : V\times V \to \mathbb{R}[/math] an inner product and [math]e_{1},\dots e_{n}[/math] a basis of [math]V[/math] which is positively oriented and orthonormal. Show that the "volume element" [math]\text{vol} = e_{1}^{*}\land \dots \land e_{n}^{*} \in \Lambda^{n}(V^{*})[/math] is intrinsically defined, independent of the choice of basis.

*flips to random page*

Let [math]p:\mathbb{R}\to S^{1}[/math] be the standard covering map; consider the covering map [math]p\times p : \mathbb{R}\times \mathbb{R} \to S^{1}\times S^{1}[/math]. Let [math]b_{0}=(1,0)\in S^{1}[/math]; set [math]X=(b_{0}\times S^{1})\cup (S^{1}\times b_{0})[/math]; let [math]E=(p\times p)^{-1}(X)[/math]; and let [math]q:E\to X[/math] be the covering map obtained by restricting [math]p\times p[/math]. The fundamental group of [math]X[/math] has free generators [math]\alpha[/math] and [math]\beta[/math], where [math]\alpha[/math] is represented by a loop in [math]b_{0}\times S^{1}[/math] and [math]\beta[/math] by a loop in [math]S^{1}\times b_{0}[/math]. Find a system of free generators for the subgroup [math]q_{*}(\pi_{1}(E,e_{0}))[/math], where [math]e_{0}[/math] is the origin in [math]\mathbb{R}^{2}[/math].

Since there's no actual math being discussed...
*opens book to random page*

(a) Given two conics in different planes of the affine space [math]\mathbb{R}^{3}[/math], with two common points, and given a point not contained in these planes, prove that there is a unique quadric containing the conics and the point.
(b) Find the quadric containing the point [math](1,1,1)[/math] and the circles [math]x_{1}^{2}+x_{3}^{2}=1[/math], [math]x_{2}=0[/math] and [math]x_{2}^{2}+x_{3}^{2}=1[/math], [math]x_{1}=0[/math]. Find a quadric containing the circle [math](x_{1}-1)^{2}+x_{3}^{2}=1[/math], [math]x_{2}=0[/math], the parabola [math]x_{2}=x_{3}^{2}[/math], [math]x_{1}=0[/math] and the point [math](1,1,1)[/math] (see pic.) .

Fuck all this dumb logic and category talk.
*smacks book down on desk, flips to random page*
Let [math]\Delta[/math] be the maximal ideal space of a commutative Banach algebra [math]A[/math]. Call a closed set [math]\beta\subset \Delta[/math] an [math]A-boundary[/math] if the maximum of [math]|\hat{x}|[/math] on [math]\Delta[/math] equals its maximum on [math]\beta[/math], for every [math]x\in A[/math]. Prove that the intersection [math]\partial_{A}[/math] of all [math]A[/math]-boundaries is an [math]A[/math]-boundary.
You have 20 minutes.

>most undoubtedly

>>10854316
Proof: By definition, this is so. QED

>be OP
>need to get 4 packets of tendies
>”MA GET THIS FOR ME PLEASE”
>100 packs it is

>>10836080
God didn't give them souls.

>>10762791
agreed friend

>>10728362
based

>>10643859
Private companies are a meme but so is NASA.
Early NASA, now that wasn't a meme.

We can't have space exploration if the number 1 goal is the money pit known as the ISS. Face it, it's juts to send the 'first [x] of [y] into space'. PR bullshit. Man, I wish I could send a satellite up and take that heap of space junk out of orbit myself.

Hundreds of billions of marks we've wasted to date on it. We could have had a moon base. Been to mars. A trip to venus and have had money to spare. Instead, NASA chose to blow it sending some biggers into orbit because le progressive, le we needed to outdo the piece of shit soviet MIR, muh international corporation.

Here's my based plan. We get rid of NASA. Abolish it. Nationalize SpaceX and BO. Combine all this shit and start a new space organization and allow nuclear propulsion experiments while we're at it. I have an IQ of 200. I know what I'm talking about. Put me in charge of the world and I'll straighten it out.

111100111111 1101101010011 10001110101111 101100001011

>>10488730
Get fucked, nigger. Reducing childhood mortality rate is a useless policy goal and only encourages the survival of those with shit immune systems.
I hope your weak kids die from an allergy or something simple. People like you impede nature, resent it and cannot accept death. Go play on a highway with your kids.

>>10478641
As a white man this post embarasses me

>>10457784
>y-yeah heck those poltards!
>h-ha pol i-is for idiots am I right guys?

>>10455836

Let me tell you an industry secret that this board won't tell you, sure CS is easy, trivial, whatever you call it, but from my experience, people coming from a non-CS background can't code for SHIT, and this is well known among software developers and employers.
Physicists, mathematicians and even some engineers write pajeet-tier code that is unmaintainable, ugly and horribly slow, having to work with one of you suckers is absolute hell, sure you can prove some meme-tier useless algebraic-topology theorems, but when it comes to building real things and implementing solutions, you SUCK BALLS.
An employer will always prefer a CS graduate over a math / physics / engineer graduate and will always pay them more and promote them faster. This is why CS is THE best paid major by far and this is why this board RAGES so hard when CS is mentioned, because it is easier and rewards you MORE.
All those precious hours working hard and proving meme theorems to flip burgers, no wonder you guys are seething so hard seeing CS-chads making 6 figures while you're broke and burnt out, all that time living in your abstract world might have given you brain damage, I feel deeply sorry for you.