(Astro/Theoretical) Physics and Mathematics

[amber nimbus]

lmfao

linear algebra

[amber nimbus]

STOP

STOP IT RIGHT THERE

TRAUMAS ENOUGH

[honest crypt]

B I G B R A I N

[amber nimbus]

😎

lovely equation with 4 vectors

very

[amber nimbus]

@uneven pawn list is done by ur faculty lol

well ur uni's experimental phys one at least

[uneven pawn]

oh yea CU's pretty big on research stuff

also help the people on space twitter are fighting again

,,, about the ethics of asteroid mining

[amber nimbus]

uh oh

tbh asteroid mining is just not feasable anyway

just calculate how long it takes lmfao

years

to get even a gram

[uneven pawn]

if i had to give a personal rough estimate i'd guess we'd have the cabability to make asteroid mining economical in 3-5 decades

maybe less

[fluid fable]

wth does that morse code say

[amber nimbus]

that is tensor notation actually not morse

[fluid fable]

oh

[amber nimbus]

on the left it shows the expansion of spacetime

and how energy and the presence of matter causes it to deform

the right side is all the energy in the universe

[oblique sand]

GR tensor algebra can be very confusing if you're new lol
Einstein's summation convention is very readable 💀

like tell me the shape of this tensor at first glance

[uneven pawn]

p sure they were asking about the border between the equation and the graphic

[amber nimbus]

Thats just a dotted line

Usual physics convention

[rotund trout]

https://youtube.com/@mathantics?feature=shared

[devout talon]

Isn't it phi

Oop 5 days ago rip

[devout talon]

I actually saw the proof last week in class lol

[uneven pawn]

my condolences

[devout talon]

A lil bit of Korean but yea

[uneven pawn]

ah woe, i am afflicted by the common diaspora status of being able to read korean yet unable to understand it

[devout talon]

Oh. Really? Interesting. That mostly means 'by the (mathematical) induction' there tho

[uneven pawn]

it happens when the overwhelming majority of korean one picks up from one's ma is food-related, buuuuut i digress

[devout talon]

Lol interesting

[regal kernel]

Help

[amber nimbus]

Oh that

Thats not hard

Just a sum of e powers by k factors

Looks like I can define it with curl a first order derivative and a simple div

Yeah thats easy

Multiple cos and i sin

Mayhaps a csc or cot somewhere when I simplify it

[amber nimbus]

We are fine

[uneven pawn]

good ta hear

[low shell]

Start from ZF axioms!

[devout talon]

Yet to study them (I can look Wiki or etc, but I'm still too busy

[dense hemlock]

So i tried to look this up but no one can seem to agree on this

So uh

Is Acceleration absolute or relative?

[amber nimbus]

k

so

acceleration is relative

just like anything related to velocity

[devout talon]

indeed

[honest crypt]

We call them “one” and “two”, and when we have “two” “one”s, it is said that we have “two”.

[unique dragon]

Ooh hi

[fluid fable]

sigh alex is gone

[frozen path]

hi

does anyone have any good articles on limits? i'm in 8th grade and i know the basics, but not the complex parts

[flint cedar]

what subject about limits

this stuff is like 11th-12th grade level so idk

[honest crypt]

What is the very detailed mathematical definition of a landfall

[frozen path]

Anyone doing AMC 10/12?

[devout talon]

👍

[sudden basin]

(-inf)+(+inf)=lim(x->+inf)x+lim(x->+inf)-x=lim(x->+inf)(x+(-x))=0

right?

i'd wonder:
lim(x->a)g(f(x)))=g(lim(x->a)f(x)))
x∈R∩(the domain of f(x) ∩ the domain of g(x))
f(x) & g(x) are both continuous
true or false

[flint cedar]

isnt (-INF) + (+INF) undefined?

[sudden basin]

uh i forgot lim(x->+inf)(2x^2) + lim(x->+inf)(-3x)=+inf
a different case