serious-discussion

[ocean harbor]

take care

[split pawn]

Lol

I meant gradually

I got a real life yk I gotta care about iy

It

Gotta enter medschool

[ocean harbor]

sounds tough

[pulsar pagoda]

is this gitlab?

[ocean harbor]

overleaf

[pulsar pagoda]

lol

[ocean harbor]

it worked unbelievable

these plots looks so good just like how ice cream tastes

[sudden oar]

i have something to discuss about

[ocean harbor]

go for it

[sudden oar]

so, this is about algebra, why do we learn a bunch of easier ways to solve quadratics when the quadratic equation can literally be used in every quadratic formula

not every one i guess

but quadratic form

i think

idk what it's called

[ocean harbor]

you're allowed to use quadratic formula if your equation doesn't not factor or some people use it if they forgor how to factor

[sudden oar]

but i feel like i should be given a choice on whether or not i want to learn stuff like factoring and what ever else it is that i forgot to make some stuff easier, or i could just learn the quadratic formula and use it for everything

i know

[ocean harbor]

@split pawn why did you react sully

this is literally a 3d plots

[split pawn]

Why would I not

[ocean harbor]

but why

[split pawn]

Another sully!

[ocean harbor]

D:

[split pawn]

Well it wasn't what I expected

[sudden oar]

the only problem is that actual assignments where u have to do ur math a specific way suck

but tests would be easy for me

[ocean harbor]

factor is the most important skill

[sudden oar]

mannnnn

but why

i know it makes it faster to solve

like way faster

[ocean harbor]

if your number is prime I think it cannot be factor

[sudden oar]

yeah

[ocean harbor]

I used to struggle with factoring before but now im good

[split pawn]

Wut

[sudden oar]

if u had 3 and 5 u can't get factors that make 3 out of 5

[split pawn]

Why can't it be a factor

[ocean harbor]

you say prime if doesn't factor

[sudden oar]

so u would use quadratic formula

[ocean harbor]

ye

[split pawn]

Or rather you mean it can't be factorised

[ocean harbor]

or no solution

lol

[sudden oar]

but like, why not teach us that it's more of a step by step process to see what you would do

like can u factor it, no, so then don't tell me all this other stuff to do it a faster way if the rest of it works in the quadratic formula

ok that didn't explain my point well

but u get it

[ocean harbor]

if you can see it's factorable you just factor

doesn't take too much time

[sudden oar]

yeah i'm just mad that it was such a struggle

[ocean harbor]

wanna do some problems?

[sudden oar]

no

i understand it

[ocean harbor]

okay

[sudden oar]

i'm still mad tho

so i'm complaining

[ocean harbor]

[elder iron]

1+1=11??

[quasi jetty]

memes go in #chill

[ocean harbor]

Why you hate monkeys

Monkeys are literally the best

https://tenor.com/view/monkey-funny-eating-gif-21204736

Monke

[brittle aurora]

Is it not a good idea to move on to Pre-Calc 2 if I get by with a C in Pre-Calc 1 in uni? I will need to take up to Calc 3 at the end

[ocean harbor]

There's only pre-calc, where did you get 2 from?

Or do you mean multivariable calc?

[neat lintel]

UUUUUUUH grade doesn't matter. What matters is how well you know what you were supposed to learn

If you don't know what you learnt, then yeah. Probably review

[neat lintel]

Weird fact
The time complexity of this algorithm is the golden ratio raised to n

fn fib(n: usize) -> usize {
  if n < 3 { return 1; }
  fib(n-1) + fib(n-2)
}

[final fable]

How to prove

Also that's legit cool .. if true

[neat lintel]

https://www.geeksforgeeks.org/time-complexity-recursive-fibonacci-program/#

Can you have Diophantine equations with zero coefficients?

[surreal sapphire]

sure, why not

[teal lion]

Coefficients that are zero, or no coefficients?

[static loom]

easy

[coarse radish]

are mit lectures enuf to learn maths and cs

[static loom]

nx^k is just x^k + ... +x^k (written n times) no more coefficients 😌

[static loom]

this sounds too much like a 'bare-minimum' attitude to really matter either way

[forest karma]

Testo

[coarse radish]

didn't get wut u mean .
i asked for like suggestions about other free sources/channels
or mit lectured cover all theory for undergrad level

[static loom]

yeah I'm being harsh, sorry

[coarse radish]

np, i really din get it lol

[teal lion]

You need to do problems too

problems are actually enough in many cases

[forest sierra]

when you spend half an hour on 1 question and finally understand it. the feeling can be equated to true loves first kiss

[frail lagoon]

relatable, except make that half hour 3 hours

😭

[quaint kayak]

HOW!

[gusty sinew]

How what

[teal lion]

This feels the most common to me

for a statement to become really intuitive

if it’s nontrivial

[rough topaz]

hi

[hidden isle]

how about a couple dayz

[ocean harbor]

https://tenor.com/view/ok-cat-i-dont-care-idc-gif-23191447

@solar hawk

[gusty bough]

Hello hello, I am studying scientific mathematics (basically pure maths) at UCLouvain and am wondering how high do my grades need to get a scholarship for a master in Cambridge ?

The level here is a bit lower than in Cambridge which is the best maths univeristy

(I mean i'll be happy if it's not cambrige but maybe Oxford or Imperial College London or even Bristol)

Though I like my university

[ocean harbor]

isn't london located in canada?

[gusty bough]

of course

🧌

[ocean harbor]

I mean studying math degree at canada is lame here

probably Waterloo is good for math

but sometimes it's hard to get in

oh wait you said cambridge I think thats a good one idk

[gusty bough]

man london is the capital city of the uk

[ocean harbor]

I got a canada server and it has a lot canadian people here ill ask them if cambridge good uni or smth

[gusty bough]

💀

i thought you were joking

[ocean harbor]

☠️

you made me confused now

[gusty bough]

london -> Uk

[ocean harbor]

but im pretty sure london is something located in canada

[gusty bough]

BRUV

💀

you're kidding right ?

[ocean harbor]

nvm it's uk you're right

[gusty bough]

yeah

[ocean harbor]

I suck at geography

[gusty bough]

i know my geography

[ocean harbor]

[gusty bough]

$\mathrm{London} \in {\mathrm{city} \mid \mathrm{city} \in \text{United Kingdom}}$

kek

[ocean harbor]

epic fail

[gusty bough]

no

nahhh

[ocean harbor]

uhhhh

cool

[fathom swallow]

ταυταυ

[gusty bough]

yes

xD

useless latex

in this case

[ocean harbor]

fr

[gusty bough]

latex is overpowered though

[ocean harbor]

latex is hard on tikzpicture

[gusty bough]

you mean the inverse right ?

tikzpicture is hard on latex ?

[ocean harbor]

yeah

like drawing things

[gusty bough]

yeah yeah

[ocean harbor]

I want to try draw this

[gusty bough]

TikZ ist kein Zeichenprogramm

[ocean harbor]

[gusty bough]

You don't :)

Just don't

[ocean harbor]

nah someone named leothelion told me you can

[gusty bough]

yes but

at what cost

(hint : your sanity)

[ocean harbor]

I don't get it

[gusty bough]

try

you'll get what i mean

[ocean harbor]

#latex-help message

im trash sorry

but I like drawing tikzpictures in like graphics

[gusty bough]

nah you definitely can do it

but

your brain will die

[ocean harbor]

lmfao

[gusty bough]

that's why

don't

xD

[ocean harbor]

I do java at school and it's harder than latex

also cpp and python

[gusty bough]

latex is easy i hope it's harder

[ocean harbor]

what do you mean ☠️

[gusty bough]

LaTeX just makes sense

[ocean harbor]

latex is fire

[gusty bough]

yeah

easy to learn

unlike java

[ocean harbor]

but this isn't a coding language right?

[gusty bough]

noê

nope*

text editor

[ocean harbor]

I see

[gusty bough]

like html kinda

[ocean harbor]

cries in java lmao

[gusty bough]

i only learn python and won't take java course next year lol

[ocean harbor]

im doing it for my future uni i wanna go to

[gusty bough]

F

good luck

[ocean harbor]

im doing java at my school

it's a grade 12 course

[gusty bough]

lucky

never had anything like this

[ocean harbor]

oh fr? woah

[gusty bough]

yeah

[ocean harbor]

I like when latex does that lol

[gusty bough]

my option was the best one and it was science7 maths8

[ocean harbor]

whenever creating a 3d plots it always happens

[gusty bough]

rip

too much informatio

n

[ocean harbor]

it worked!!!

[gusty bough]

ja of course it takes time 💀

[ocean harbor]

☠️

[gusty bough]

i can't send images lol

[ocean harbor]

you need to get active role

[gusty bough]

yeah but i'm nto active lol

and won't be

[ocean harbor]

you can still get it

[gusty bough]

i've gotta study more

[ocean harbor]

yeah same here

but im only active when i have free time

[gusty bough]

nah you're in grade 12, you don't need to study xdd

[ocean harbor]

such weekends or holidays

[gusty bough]

unless it's very hard

[ocean harbor]

I mean I need to because next year im gonna do undergraduate

midterms are coming on November 10th for me

[solar hawk]

LOOOOOL

LOOOOOOOL

[ocean harbor]

lmfao

[solar hawk]

Coding is fire

I need to make some pointers now

[gusty bough]

me who's undergrat and never learnt how to study (i'm in the mud)

[ocean harbor]

pain

[ocean harbor]

i need to make a simple game in java and it has 40 marks 💀

[gusty bough]

me who actually uses python besides class/homeworks

[ocean harbor]

python is amazing

[gusty bough]

yeah

[ocean harbor]

you could use python in julia

[topaz surge]

Python is rubbish, C# forever

[gusty bough]

i used it to bruteforce my answer

[solar hawk]

Damf

[gusty bough]

lad, i don't need c#

i need to code things fast

[solar hawk]

Today my Java teacher said simple string manipulation was hard

Yesterday*

I’m gonna cry

[ocean harbor]

;-;

[topaz surge]

Eh, fair enough - at least it can be debugged easily, but I'll admit it isn't quick ;-;

[gusty bough]

yeah it isn't

but it's quick enough for what i need

[topaz surge]

Quick once you've made it though - gotta love that speedy processing

Had to do some stuff in FORTRAN once though - you know nothing of pain ;-;

[gusty bough]

SHIT

it didn't compress

well

that was going to be an example

on how i used python

[topaz surge]

Aw ;-; looked interesting but now gone ;-;

[gusty bough]

yeah

[topaz surge]

Sed ;-;

[gusty bough]

not gonna flood the chat

[solar hawk]

The only thing worse than a segfsult is when your ide thinks there is an error but there is not and you can’t fix the error since it isn’t fucking there

[topaz surge]

Fair

[solar hawk]

Why

Why does this happen to me

[gusty bough]

can send it to you if you want to

[solar hawk]

It isn’t going away

[topaz surge]

Why not :D sounds fun

[gusty bough]

I sent a friend request

[ocean harbor]

https://tenor.com/view/ok-cat-i-dont-care-idc-gif-23191447

💀

[gusty bough]

cat

ok

[ocean harbor]

it has knees like a human

** **

[topaz surge]

:0 cat

This channel is much better

Opinion on cats in general?

[ocean harbor]

cat has knees

https://cdn.discordapp.com/emojis/1048660781123780749.gif?v=1&size=48&quality=lossless

[icy locust]

turn off and on yor computer

also clear cache

cargo clean if you use rust

otherwise make clean or whatever

[topaz surge]

I'm not sure if this is a channel in which I can send a picture of my cat - is there a proper place for it or is here fine?

[solar hawk]

I just decided to not implement the feature LOLL

fuck pointers Ty no pointer for them

[ocean harbor]

#cats

[solar hawk]

Kneeees 💀

[ocean harbor]

💀

[topaz surge]

Huh. Yeah that'd make sense ;-; I am blind

[ocean harbor]

;-;

it's a cool thing that you have a cat

I wish I have one rn

[ocean harbor]

like this one

☠️

[split pawn]

Lol

[topaz surge]

Cats are very good, I agree

[ocean harbor]

I want to draw something

dani gave me hopf fibration which is awesome

https://cdn.discordapp.com/emojis/1048660781123780749.gif?v=1&size=48&quality=lossless

[split pawn]

Draw

...

Hmmmm

🤔

[ocean harbor]

hmm?

ill draw kokichi ouma

[split pawn]

This is me trying on mobile

Idk why the د got weird

[ocean harbor]

woah

woahhhh

[split pawn]

...mhm

[latent glacier]

Hamid

nice

[split pawn]

But ig if it fits it sits

I'm not following any calligraphy styles

I've tried Thuluth but I need a teach

[latent glacier]

i mean u write very well

the way you wrote Hamid 10/10

[split pawn]

Um thankyouuu

[misty aurora]

https://cdn.discordapp.com/attachments/1048362433221251102/1130643601265807502/attachment-4.gif

[split pawn]

Hi Akira

Every discussy starts with a starting convo

[misty aurora]

you guys are siblings?

[ocean harbor]

no?

[ocean harbor]

https://tenor.com/view/monkey-funny-eating-gif-21204736

[split pawn]

Not a gif*

[ocean harbor]

monke

[ocean harbor]

okay fine

what are you gonna talk about

[split pawn]

Mhmhm

I don't know...

You choose

[ocean harbor]

java

ill talk about how hard is for me ugh

[split pawn]

Haha

Sure

Vent it all out

[ocean harbor]

@misty aurora
https://tenor.com/view/too-late-jotaro-pucci-jotaro-kujo-i-saw-what-you-deleted-gif-27592943

[split pawn]

(also how you failed the test)

[ocean harbor]

oops

here

[ocean harbor]

I think i failed one test

for java

i got 8/20 💀

so it's a 40

hbu?

no way discussy is dead again

@split pawn

[split pawn]

I mean

You didn't ping me

Sowwie Akira

Okay I'm here

@ocean harbor

[ocean harbor]

java sucks

just trying to finish this shit

[split pawn]

Mhm it does

I hated Java the day I saw it

[ocean harbor]

i was wondering if JavaScript and java look same

but they're not

[split pawn]

Nope

[ocean harbor]

javascript more stupid

[split pawn]

I mean it's funny how their names are same

[ocean harbor]

yeah

[split pawn]

But I do a lot of javascript

Like my totally not friend amukh

[ocean harbor]

like what?

[split pawn]

I do more Desmos than JS

[ocean harbor]

can you do 3d stuff in desmos?

[split pawn]

Um yeah

Since there's Desmos 3d

Otherwise there's things

Like you can make a 3d engine basically

Like a thingie with perspective and stuff yk

[ocean harbor]

I suck at doing such cool things in desmos lol

[misty aurora]

why use demos when you have cas

geogebra

[ocean harbor]

like ive seen a lot people draw things

[split pawn]

Yuck

[ocean harbor]

desmos > geogebra

[misty aurora]

no

[split pawn]

How on earth did you let him say the g word Akira

[misty aurora]

cas > desmos

geogbra > all

[ocean harbor]

your opinion is mid

[misty aurora]

your opinion is not valid

[ocean harbor]

https://tenor.com/view/ok-cat-i-dont-care-idc-gif-23191447

[misty aurora]

https://tenor.com/view/team-teamwork-cats-team-cats-friends-best-friends-cat-gif-17675216

bry

[split pawn]

Bruh

[misty aurora]

😔

[split pawn]

Yay

We win

Haha

[ocean harbor]

lmao

[split pawn]

You can't make Flappy Bird in geogebra

Well Akira

I got to have dinner Akira

[ocean harbor]

okay enjoy

[split pawn]

Imma share some

Haha

[ocean harbor]

im gonna cook marina soon mmm

for lunch

[split pawn]

Okay

[solar hawk]

😭💀😭💀💀😭💀😭😭💀😭😭

[ocean harbor]

☠️

[latent edge]

yes

I do my knot theory stuff there

[ocean harbor]

rare deltoid

[latent edge]

@ocean harbor

[neat lintel]

Coefficients that are zero

Why are so many books 1,500 pages long

[ocean harbor]

chad

[magic moat]

Damn what is that?

Looks super cool

[ocean harbor]

thats desmos

[magic moat]

Well I knew that much

[ocean harbor]

I think he made knot theory or smth

👀

[magic moat]

😄

[magic moat]

Aaah I heard about that

[ocean harbor]

nice nice

https://youtu.be/8DBhTXM_Br4?si=uZXcaK3WDsO0wws2

ive seen this :D

[magic moat]

Lol same

[magic moat]

That's all I know about it but I only watched a little bit a long time ago

[ocean harbor]

I... just watched it today

so cool

[magic moat]

I guess I'll have to watch it

[ocean harbor]

oke oke

[magic moat]

https://youtu.be/rSKMYc1CQHE?si=Yr3fzdYvWoeiNzJ6

[ocean harbor]

woah thats cool

[magic moat]

I watched that today and loved it

[ocean harbor]

im gonna watch it rn

[magic moat]

Watch 40:05 for a quick dopamine shot

[ocean harbor]

also what language is this

okay

[magic moat]

English I thinj

[magic moat]

Just kidding idk

[ocean harbor]

nono

I mean which code language is this

[magic moat]

C#

[ocean harbor]

ah

I was thinking of this

[pulsar pagoda]

mono is a C# runtime

[ocean harbor]

I did watch this part and it's pretty cool

[magic moat]

Also with the music I could watch that for hours

Really made me want to study fluid mechanics

[ocean harbor]

thats nice

[magic moat]

But I don't know any physics at all

Im thinking about doing a ME minor with my math major

But I'm kinda scared

[ocean harbor]

@shrewd loom

he still wants to rematch

should I go for it?

forgot to reply since yesterday ugh

whats the matter anyway

i didn't know this was discussy 1

oh my god

okay

thanks

he's easy tbh

you have seen the game review right?

[oblique kayak]

the fact that people found knots interesting enough to categorzie 352M 😭

[ocean harbor]

fr

[oblique kayak]

WHYYYY

AHH

[ocean harbor]

see told you he's easy

im like 1046 in chess but still getting clapped with someone that is around 900 💀

I suck sometimes

[oblique kayak]

ngl its actually interesting now that im watching the video lol

[ocean harbor]

lmfao have fun

[worldly lance]

Is it possible for an indefinite integral to not have a final solution even when using the method of integration by parts?

[neat lintel]

No elementary solution maybe

[soft idol]

Hi everyone, I’m looking for some tips on how to lecture better, I’m a highscool student currently teaching general relativity and am trying to get better and better at teaching, any help is appreciated!

Ive been making lecture notes and been trying out different strategies like student involvement and other things like breaks. Any ideas for things that I could try would be appreciated too

[fierce fox]

highschool student and teaching general relativity generally are two words that do not go together.

[neat lintel]

why not

[fierce fox]

well its not that they cant but its extremely extremely uncommon

[solid snow]

who are you lecturing to

what is the background of your audience

[soft idol]

There are online things/lecture series’, I’m currently doing Leonard susskinds lectures on Einstein a general relativity and then each week I go over and learn and then teach it

[soft idol]

Other highscool students

[solid snow]

do they know any of the relevant math required for this

do you?

[soft idol]

I’m explaining it to them inthitevly, for example, an integral I say adds up all the values

[neat lintel]

So you're watching someone's elses lectures, then taking what you learnt from that lecture and lectureing other people in the same week?

[soft idol]

And use diagrams and proofs too

[solid snow]

Ok, I'm going to sound harsh, but you should probably stop. You don't have the qualifications to be teaching others about this topic and they don't have the background to properly learn it

[soft idol]

Like tomorrow I will be doing gauss’ theorem

[fierce fox]

good grief

[neat lintel]

If you want to be a better lecturer just tell them to watch Leonard susskinds

[soft idol]

Watching them a couple times through and doing some on the side research/work to develop a seller understanding

[solid snow]

What is the point though they don't know any of the math to actually do anything with it

[soft idol]

It’s all for fun, not an actual job

[solid snow]

This is akin to just watching PBS spacetime

[fierce fox]

not dissing on the intention but I really dont think your audience has the backround to understand exactly what your teaching.

[neat lintel]

Sounds like you're doing more harm than good

how are you teaching general relativity to people who don't even know what an integral is

[rapid briar]

[solid snow]

general relativity is a couple notches even beyond just that

[neat lintel]

ain't no way

[pastel spruce]

I think you're about to get flamed... it's nice to see you're interested in the subject but slow down a bit maybe.

[rapid briar]

the road to hell is paved with good intentions or something like that

[soft idol]

Does anyone have helpful feedback

[fierce fox]

eh except if you have at least a decent understanding of algebra and foundational concepts of calculus you can pretty well understand pbs spacetime

[solid snow]

this is helpful feedback

[soft idol]

Of how to lecture well

[solid snow]

the helpful feedback is to stop before you muck up people's first exposure to the topic

[fierce fox]

mmm teach them trigonometry and algebra 2 first

[neat lintel]

Know your content for longer than a few days

[solid snow]

you're potentially making it harder for a professor down the line to undo whatever bad intuition you may build up here unintentionally

[fierce fox]

oh and hyperbolic geometry

[soft idol]

I think since I’m approaching it from an intuitive and understanding perspective, they will have a better foundation

[rapid briar]

Do You understand everything behind it?

[fierce fox]

oh and any of that in 4 variables minimum

[rapid briar]

Before you try to explain it at a lower level

[solid snow]

you do not have the qualifications to determine this

you yourself do not even know the topic fully

[neat lintel]

You get an intuition understanding by being exposed to the rigorous definition first

[soft idol]

😂

I appreciate the worry and understand it comes from a justifiable place

[solid snow]

you don't seem to be taking any heed to it though...

poor classmates

[fierce fox]

well I mean do you have a good understanding of the topic. just an example but how would you go about calculating the six elements of an orbit using the principles of general relativity?

[soft idol]

Because these are thinngs I’ve thought about, I only came here to ask for tips on how to lecture Breyer

[neat lintel]

solve this bucko $\int \frac{1}{1-u^2} du$

[fathom swallow]

Several people

[solid snow]

step 1: know the subject inside out

[soft idol]

I know what I have done so far, I don’t know all of general relativity

Only up to the lectures that I have finished reviewing

[solid snow]

so is what we're saying just going in one ear and out the other?

[neat lintel]

yes

[solid snow]

we're telling you you should stop point blank period

[neat lintel]

They're not gonna stop tho!

[fierce fox]

how good is your memory?

[solid snow]

general relativity without differential geometry

[neat lintel]

answer my question

[soft idol]

What question

[neat lintel]

$\int \frac{1}{1-u^2} du = ?$

[fathom swallow]

Several people

[soft idol]

I don’t know how to do that

I could make a guess

[neat lintel]

ain't no way

what about this one

[soft idol]

I’m self studying bc right now and am in derivatives

[neat lintel]

$\int \frac{1}{1+u^2} du = ?$

[fathom swallow]

Several people

[neat lintel]

ain't no way bro studying GR without knowing calc

[solid snow]

if you're deadset on having a group of people doing physics with you, start a study group instead.

[neat lintel]

and teaching other people about integrals when they don't know integrals themselves

[soft idol]

I can explain what I need to for what I’m trying to teach

[fierce fox]

mm no you cant

[solid snow]

explain geodesics right now

[tribal slate]

im tripping, i got u

[soft idol]

I haven’t done geodesics one the lecture series

[rapid briar]

It’s literally

[solid snow]

are you starting to see my point?

[rapid briar]

The blind leading the blind

[soft idol]

I’ve never heard that

[fierce fox]

good fucking lord

[solid snow]

that is certainly a very significant concept for general relativity and requires a non trivial amount of math

[soft idol]

This conversation doesn’t feel constructive to me

[fierce fox]

[solid snow]

because you're just ignoring what we say

[neat lintel]

it's not

[solid snow]

we're not just going to tell you what you want to hear

[soft idol]

I’m looking at everything you are saying

[fierce fox]

wait guys what if he isnt teaching the details of gr so much as its implications?

[tribal slate]

i tried watching lectures on GR but they brought up tensors and TpM and whatnot so i stopped

[soft idol]

How about I send a picture of my lecture notes so far

Remember these r notes just for me while talking, so they won’t be ultra readable

But maybe u can understand what I’m trying to do

[jagged forge]

tensors are cool

[soft idol]

Is there some way I can send pictures

[jagged forge]

no you need active for that

or another special role

[solid snow]

you can in #chill

[jagged forge]

what is TpM

[tribal slate]

i dont remember

[jagged forge]

tangent bundle?

[tribal slate]

oh i remember

tangent space of M at p

[jagged forge]

yeah

maybe i should start intro to smooth manifolds

[soft idol]

I out my notes in chill

If anyone wants to look

[tribal slate]

they brought up coordinates and it was disgusting because it looked disgusting

[jagged forge]

i got through the first 4 chapters of lee’s intro to topological manifolds, and my study group was planning to do ism next

[solid snow]

turns out they aren't

[jagged forge]

these notes look like a compilation of results from multivariable calculus, undergrad physics, and pop cosmology

[soft idol]

They r only notes covering the first half of the second lecture

So I would assume not at all into the meat of GR, merely laying foundations right now

[jagged forge]

well this is more like foundations for the foundations for the foundations of GR

[soft idol]

Ok

Here’s the link to the lecture series

[solid snow]

by the time students get to GR at unis they've done mechanics, em, linear algebra, and vector calc

why is this being taught without any of this background

[jagged forge]

einstein literally had to call up the mathematicians of his day for help cuz he didn’t know enough math to invent GR

[soft idol]

https://m.youtube.com/watch?v=hbmf0bB38h0&pp=ygUcRWluc3RlaW5zIGdlbmVyYWwgcmVsYXRpdml0eQ%3D%3D

This is the first lecture

[solid snow]

Why don't you just play these instead

[soft idol]

Because people won’t get it

At least I didn’t get everything

[solid snow]

i feel bad for whatever prof gets this batch of kids

[soft idol]

Showing why things work is something I like, I think it’s beautiful

[zealous garden]

GR is trivial though

[soft idol]

So I dive a bit more deeply into why things are happening and I connect examples

[zealous garden]

You just have to know the math

[soft idol]

Lol

[solid snow]

how are you diving more deeply

[jagged forge]

alright then, solve the einstein field equations mister

[soft idol]

By explaining/deriving theorems rather than taking them for granted

[zealous garden]

Also Clifford figured it out first

Asterisk

[soft idol]

and stuff like that, also using geometrical examples I think works well because people aren’t used to just symbols

Geometric*

[zealous garden]

I can't even read them

[jagged forge]

right, well i am sure someone has formulated it in terms of geometric algebra lol

[zealous garden]

Yeah there's a GA version of the Ricci Curvature tensor/scalar/what have you, and the christoffle symbols IIRC

I just don't know that stuff

[zealous garden]

The biggest thing I remember is that we don't have indices on our different Ricci Rs

Because you can tell which one it's supposed to be

[shrewd trellis]

Is this chat 2?

[split pawn]

Mhm

[uneven ibex]

1+1

is 11

[deep canopy]

https://media.discordapp.net/attachments/1109770301262278666/1109806163857510460/makesweet-st0ted.gif

I dont think thats how it works sir

[proud olive]

In a base 1 number system yeah

[acoustic granite]

Guys where is audio and video discussion like we used to see some professor and some people talking

[topaz surge]

🪟

[ocean harbor]

Go troll somewhere else

[ocean harbor]

It works if you have the active role

[versed jay]

Knowing F{x(t)}, how to get F{x(t)/t}

[ocean harbor]

#❓how-to-get-help

[split pawn]

Troll in Ken's DM

(She doesn't like it)

[ocean harbor]

No way

That's a never thing gonna happen

[split pawn]

Ken hates DMs

Not to say trolling in DMs

That's two strikes at once.

[ocean harbor]

I hate dms if I'm getting like scam bots or someone being weird at my dm

[split pawn]

Then you get blocked

[ocean harbor]

Sometimes for math help too

[ocean harbor]

For what

[split pawn]

I wonder how my DM doesn't match any of the criteria

But still somehow filters out

[ocean harbor]

[icy locust]

>>> A = numpy.ones((3, 3))
>>> A
array([[1., 1., 1.],
       [1., 1., 1.],
       [1., 1., 1.]])
>>> numpy.linalg.eigvals(A)
array([ 3.00000000e+00,  6.16297582e-33, -7.50963641e-17])

numpy moment

[topaz surge]

Gotta love them floating points

[icy locust]

>>> numpy.linalg.det(A)
0.0
>>> 0 in numpy.linalg.eigvals(A)
False

??????

[topaz surge]

Gotta introduce an epsilon tolerance - a small value below which numbers are considered 0

[icy locust]

epsilon this, epsilon that

why don't you just epsilon every finite number

[topaz surge]

Usually libraries use 2.2*10^(-16)*max(svd(A))*max(size(A))

[icy locust]

don't use floating points, the only sane choice

[topaz surge]

Mood

Problem is that it's kinda hard to do without them when you get into surds and stuff

[icy locust]

well if you deal with real world continuous data you're unlikely to hit such "ones" matrices anyway

[topaz surge]

True that

Although you're also unlikely to run into any infinite precision decimal - you'll always represent it as a fraction at some level

Even 0.000000001627 can be 1627/10^(n)

[icy locust]

rationals are fields, and i suppose sage or sympy could handle them with 100% accuracy

floating point numbers are not even associative

hence the "numerical instability" memes

[topaz surge]

Yup! In fact, I'm messing around in C# right now to make a toolbox for geometric control operations on fractions

[icy locust]

in fractions
rip perf

[topaz surge]

Darn autocorrect changing my fractions to fractionals

[icy locust]

factional

[topaz surge]

:0

Fictional 🧐

Functional?

[icy locust]

protip: utter the word "functional" and you can tell which field the listener is in by how they understand it

[topaz surge]

Huh. That is a very accurate test and I shall be using it

:D

Do you require citations for your work?

[icy locust]

wdym

[topaz surge]

Imma steal your "functional" test and call it my own >:D plagiarism

Mwahahaha 🧐

[icy locust]

well

i couldn't claim it was original research

[topaz surge]

:0 then we shall steal it together

[icy locust]

100% sure people come up with silly tests all the time

[topaz surge]

Partners in crime 🤜 🤛

[icy locust]

:O

[umbral lion]

theres not enough mathematical study into sigma algebras like the floats

theyre pretty interesting even if theyre not nice

[icy locust]

they are cool for sure, but what's not cool is treating them like R

[icy locust]

yea

[umbral lion]

dont tell the machine learning people

they might cry

perhaps even piss themselves

[icy locust]

well, they have their own tools to deal with quantization

Reminds me of that SIGBOVIK paper "GradIEEEnt half decent"

[umbral lion]

tom7 is exactly the man in the mirror computer scientists need

[icy locust]

:O

[ocean harbor]

https://tenor.com/view/ok-cat-i-dont-care-idc-gif-23191447

[pulsar pagoda]

my man, why do u think I exist. Thats my job

[bronze pelican]

Cat sitting like chmonkey

[ocean harbor]

[tame egret]

thanks😃

[ocean harbor]

no problem

oh my gosh

<@&268886789983436800>

[ocean harbor]

okay?

https://tenor.com/view/epic-embed-fail-ryan-gosling-cereal-embed-failure-laugh-at-this-user-gif-20627924

boi what the hell

[final fable]

Quantizing things to 4 bits... that's some deepass discretization

This floating point number here with 7 decimals of precision... would be a pity...

If it happened to be presented with these numbers 0..15

Like literally

Nevrrmind they are still floats

https://huggingface.co/blog/4bit-transformers-bitsandbytes

[ocean harbor]

[pulsar pagoda]

did someone say quantization?

[loud snow]

e cthats a cool name

[hasty leaf]

I have done this

In a grounds up pure python image processing library I wrote for fun

[neat lintel]

Interesting

[hasty leaf]

With the proper pallette adjustments you may not be able to see much difference

It depends on the image thou

[final fable]

I did that when running an LLM on my PC.

Or well the binary for the model was readily 4-bitted. Didn't have to do that by hand.

[hasty leaf]

More fun by hand

Even did the math library lmao

So no Numpy

Really pure

[pulsar pagoda]

u mean no c bindings?

[hasty leaf]

Ye

I wrote a render engine from scratch

Output to bitmap

With even 3D

Shading and hidden surface removal

And own bit fonts and linear algebra lib

[pulsar pagoda]

yesh

[hasty leaf]

Check chill

[pulsar pagoda]

just go learn x

c

[hasty leaf]

I know c

Many have done that

[pulsar pagoda]

why would u do that in pure python then?

[hasty leaf]

Fun

[pulsar pagoda]

sure whatever

[hasty leaf]

And the challenge

[final fable]

Wait what... binary stuff in Python

[hasty leaf]

It still runs fast

Yes

[final fable]

That's tedious

[hasty leaf]

Check chill

[pulsar pagoda]

nahh

[hasty leaf]

No really

[pulsar pagoda]

going to do analysis

[hasty leaf]

Python is turning complete

[pulsar pagoda]

idc

[hasty leaf]

It can do binary stuff

That's you it has stars on github lmao

[neat lintel]

why would u say that without knowing how to do it ?

i do in typescript, and read some in python. it's fine.

[final fable]

Thanks captain logic. So because you do this in Typescript, and this CAN be done in Python, the logical thing is that I don't KNOW how to do this?

I'd like to know more.

[wild lantern]

[hasty leaf]

It's actually not that hard

You can do it in any language

[wild lantern]

Tfw turning but not twisting complete

It's not too bad to do this in C actually.

[hasty leaf]

It is a snek lmao

[wild lantern]

I ended up doing something like that with pixmap files.

[hasty leaf]

Yes

[wild lantern]

You can actually completely avoid any binary and do all text output too.

Since there are ascii variations of the pixmap format.

[hasty leaf]

But I did a full engine

Not just that

[wild lantern]

Yeah yeah

[final fable]

Ascii is too many bits lol

[hasty leaf]

Well there is unicode

Alot moar

[wild lantern]

The point isn't to be small if you are using ascii to represent images.

Technotanuki, have you done much else with computer graphics?

[final fable]

But funny that ASCII is 7/8 bits which is the epitome of compact... going to 4 bits packs less than the characters needed for the English language lol

[hasty leaf]

I have done a icon editor in Pascal but lost the code lmao

[wild lantern]

I see

[hasty leaf]

And similar stuff

[wild lantern]

Foley Van Dam is kind of a classic reference on cg shit

Shirley is also another good book on this stuff.

Idk how much of a pipeline you implemented but there are lots of books on the opengl pipeline that are pretty practical too

[final fable]

Nerding is fun

[wild lantern]

I took a computer graphics course that mucked about with shader programming a fair amount.

It's kind of an odd perspective

[hasty leaf]

Shading up to hidden surface removal

[wild lantern]

Yeah you'd probably get a kick out of shader programming stuff.

It feels clunky as shit at first

[hasty leaf]

Hand computed several solids

For fun

[wild lantern]

But once you implement a few cool tricks that rely on the gpu to do something nontrivial it kinda makes sense why people use that particular workflow

[hasty leaf]

The vertices

Maybe in the future when I retire and hopefully succeed in the startup

Want to get into YCOMBINATOR first lmao

Programming started as a hobby

Will end as a hobby

[wild lantern]

https://learnopengl.com/Getting-started/OpenGL

This website is pretty good actually

[hasty leaf]

I have done direct X

[wild lantern]

Oh yeah then this is probably pretty similar.

[hasty leaf]

Yes

[final fable]

Hmm I'm kinda trying to find some balance on how to spend my time... I might have to at some point take some CUDA stuff to rewrite my ML or data handling pipelines for financial data... this comment touches that. Basically - what would you recommend in terms to have generally solid foundations w.r.t. the GPU dev stuff?

[wild lantern]

Shit idk I'm not an expert at all. General computing with the gpu like cuda is not something I have done

[hasty leaf]

Idk either

[wild lantern]

Closest I've done is compute shaders very briefly which still seems way different from cuda stuff.

The whole idea with shader programming is that the gpu offers a particular pipeline tailored towards gfx tasks. You write and compile code written to be loaded and ran on the gpu to do those tasks.

With general computing tasks I'd probably be more lost than you lol

[final fable]

It seems to be C++

But there are things like numba which can access CUDA

[wild lantern]

Shader code for opengl is glsl

Or something like that

[hasty leaf]

Heard good things about numba

[final fable]

Should be fast

[umbral valley]

why don't you guys try learning vulkan instead? that is more modern than opengl

I think opengl will eventually be retired

[solar hawk]

Doesn’t have a 401k

[reef geode]

Opengl and vulkan are super distinct

It's like comparing apples and oranges

Opengl is slower or w/e but it is way higher level so if you are dinking around at a smaller scale the speed difference really doesn't matter and there is no reason to subject yourself to further suffering than nessecary. I remember messing around vulkano and while the technology was awesome I had an objectivly bad time having no experience with other graphics apis

It's like asking well why don't you program a discord bot in C

As long as performance isnt mission critical there aren't too many reasons not to use opengl

[icy locust]

if you use opengl, just make sure to do all rendering calls in one thread

[next blade]

syntactically yes, but GPU programming (via CUDA) is very different from regular (single threaded) stuff on the CPU. read a CUDA book and write some algorithms relevant to your interests to learn. and Patterson & Hennessy's Computer Architecture, though not like CUDA specific, is a good read for anyone wanting to do HPC no matter what the platform

[pulsar pagoda]

use a hardware and software interface from patterson and hennesy first though

a quantitative approach is not recommended for beginners

[teal cosmos]

yo guys

[woeful locust]

@boreal orbit
dude there are so many bobs here

i guess you are not alone

[boreal orbit]

yay

[woeful locust]

leduit

[split pawn]

There's only one me.

And that's fortunate

[hexed hemlock]

wya

[woeful locust]

@hexed hemlock

ahh yes

you joined

[hard schooner]

https://www.youtube.com/watch?v=2YKm7agoLgE
please watch this video

[raw ginkgo]

why do you want us to watch 30mins of alan walker lol

[ocean harbor]

[granite sentinel]

can I ask if there’s any place that have free math problem solutions to practise on?

[ocean harbor]

yes

depemds on which topic and when you searching it on google or smth else just go to pdf section

[granite sentinel]

I was learning linear algebra and want to find some questions to solves

[ocean harbor]

http://linear.ups.edu/version3/pdf/fcla-draft-solutions.pdf

try this

[undone cedar]

which grade books you need

[granite sentinel]

learning high school/pre-Uni ones

The basics ones

[undone cedar]

methods?

spesh?

further?

or all

[granite sentinel]

idk since I just recently started learning it

rn I’m start with gauss method

[neat lintel]

[granite sentinel]

https://www.youtube.com/watch?v=JnTa9XtvmfI&t=1619s

i was learning linear algebra from this video

not much

that's why i looking for related questions to solved

[long matrix]

that pfp

[granite sentinel]

you know my pfp is?

damn

i didn't see it coming

[noble osprey]

hey guys gangster mathematician here 🤙

[neat lintel]

that's a good pfp wym

[long matrix]

spoiler ||spoiler pfps are shit||

[deep mango]

Implying anyone knows who the fuck that is

[long matrix]

Lots of people havent seen things but plan to see them

Like, I think its just inconsiderate, really.

[deep mango]

Yes, but then how would you know the character...

It's just a generic purple hair anime girl so you wouldn't recognize it later

[neat lintel]

wait

how is that a spoiler if it's just an anime girl

[long matrix]

If you're in this space, you're almost certain to have seen news about this and that, especially the big titles

Whether or not you have read them (yet)

[neat lintel]

I don't understand anything

[long matrix]

Yeah, this discussion wasn't aimed at everyone unfortunately

[deep mango]

Is that doki doki literature club

I know that one

[long matrix]

Yeah, so I think certain images from DDLC would constitute to spoilering, and I'd not be a fan of that

[deep mango]

Oh yeah

That part was pretty entertaining

[long matrix]

[deep mango]

I hated that girl

[long matrix]

whatever floats your boat bro

[deep mango]

I kind of hate all of them

[long matrix]

im surprised and not surprised youve played it.

[deep mango]

I didnt play it

[neat lintel]

I mean

[deep mango]

I watched NL play it, it was really funny

[long matrix]

[neat lintel]

this channel feels like a fever dream

[deep mango]

||https://youtu.be/bw0ibHwEjFg?si=0syfDLYlAGR_MYW2||

Spoilered since the thumbnail is a bit spoilery

So funny

[neat lintel]

what anime is that if one portrait can be a spoiler?

[long matrix]

I refuse to discuss further

if ur interested in finding out, it honestly wont take many searches

[neat lintel]

aight

hope it's not 700 episodes so I can watch

what

its a game

[proper forge]

What if your parents saw you get beat up and just stared at you, did nothing (if you were an adult?) And you got beaten up in front of others too (friends, acquaintances, family.)

[granite sentinel]

have something interesting going on?

||https://www.youtube.com/watch?v=XH33cyNEwR8|| for any who is wondering about my pfp

probably not pretty to look at

[long matrix]

why

Whatever.

[ocean harbor]

embarrassing moment

literally

[neat lintel]

if you're gonna watch the content you will remember it while you are

[neat lintel]

Wish i could give you advice but i'm usually the one doing the beating /j

[proper forge]

What would you do? (Jon Quinones)

[proper forge]

Lolll

[ocean harbor]

LMAO

[ocean harbor]

nothing tbh

[neat lintel]

have you considered stop being beat up?

[proper forge]

It's a genuine question.

[neat lintel]

Maybe rephrase the question idk

Do you mean what would you do during the beating or after?

If you could do anything you wouldn't be getting beat

[proper forge]

Afterwards, of course. How would you handle yourself, and would you forgive the person who did it? And would you speak to them?

[neat lintel]

just fight to death and see what happens then leave the scenery?

if nobody cares to help

[neat lintel]

Hit the gym, get better friends and family

I recommend boxing

maybe you deserved it tho

change your parents

[proper forge]

I didn't. I'm a chill person. I don't think anyone deserves a public beating. With humiliation on the side.

Unless, they did something TERRIBLE

[proper forge]

Good advice.

[neat lintel]

now i need advise

[neat lintel]

What form of transportation should I use if I have to drive downtown for a protest?

[proper forge]

Bat mobile

Definitely not your own car though. Maybe bike there or somethin

What are you going to a protest for ANYWAYYYYSSS?

[neat lintel]

hit the jim yall

[topaz surge]

Person named jim: 😭

[neat lintel]

Jim should hit the jim too

[topaz surge]

Me to Jim:

🤸

   💥 🏌️

[wanton coyote]

Jim Nasium

[slate badge]

Does anybody here study Engineering?

[neat lintel]

no

[ocean harbor]

I know my friends do

why do you ask tho

[south kelp]

ew no

showering is a server requirement

[neat lintel]

You can read the EFFs guide

https://ssd.eff.org/

My point being, mind your car plate, use a facemask, hide any tattoos if you have one, take the phone in airplane mode and download an offline map of the area, etc

[ocean harbor]

https://cdn.discordapp.com/emojis/1048660781123780749.gif?v=1&size=48&quality=lossless

[neat lintel]

I went by bike to the last one. But here we are somewhat quiet.

[neat lintel]

Thanks

You are welcome. Take care

If you have a back up phone, Id also take that instead. In case you lose it.

[arctic coyote]

Anyone trying to go for amc

[torn dome]

Cat

[ocean harbor]

meow

[torn dome]

[ocean harbor]

https://tenor.com/view/ok-cat-i-dont-care-idc-gif-23191447

@solar hawk

[torn dome]

Holy moly

[ocean harbor]

amukh likes this cat

[torn dome]

You have pic perms

[ocean harbor]

it has knees

[ocean harbor]

ye you need to get active role

[torn dome]

A

How

[ocean harbor]

personally it took me with 10k messages

[torn dome]

Thats crazy

[ocean harbor]

but you could easily get it in help channels or in advanced channels

[ocean harbor]

just said "higuys2024" and got it

[torn dome]

Too lazy and i can help like 1out of 20 people

[ocean harbor]

lmao

it's fine

[torn dome]

[ocean harbor]

just keeep sending messages and be active

[torn dome]

Too lazy

[ocean harbor]

lol

[torn dome]

🤣

[ocean harbor]

https://tenor.com/view/orange-cat-smile-cat-smile-orenge-cat-smiling-gif-23133369

[torn dome]

Cat

Cat

[ocean harbor]

meow