serious-discussion

[ocean harbor]

[eternal crow]

Yea

Wait this is different from the default one

[ocean harbor]

yea ik

that's why it is funny

ngl I kinda felt like it was like this

[eternal crow]

Anyway, I've grown out of gd now

Too busy to play it again

[ocean harbor]

just try the 2.2 version

and dash

and you can quit

this is some 2.2 stuff made by lazerbiltz and manix #1207417401205981265 message

[fallow bluff]

can anyone explain calculus for me, I only know how calculus works but not how and when its applied

[eternal crow]

Damn

[eternal crow]

Calculus applications

Related rates

Linear approximation

[eternal crow]

I think this is included in calc books

[quaint cipher]

what's this notation ?

[eternal crow]

Maxima and minima

[fallow bluff]

like the absolute basics on how to do it

[eternal crow]

Idk but looks interesting

[eternal crow]

Not sure what u mean

[eternal crow]

It hyped me tbh, but nope. No distractions

[ocean harbor]

I can't play that level anymore because it is so damn laggy

so I play it on the phone

[eternal crow]

I googled it for you

But cant upload it

[eternal crow]

Basically it's an old symbol for approximately equal to

So it's the same as $\approx$

[fathom swallow]

רי-ית

[quaint cipher]

wow interesting

[ocean harbor]

approximately symbols are tricky

kinda

[ocean harbor]

I thought you had active or emeritus

[eternal crow]

I collect symbols

,,\fallingdotseq

[fathom swallow]

רי-ית

[hardy iron]

Try Khan academy

[ocean harbor]

waw

latex pro

[eternal crow]

New LaTeX command unlocked

[ocean harbor]

I still don't know most of the symbols

[eternal crow]

I crashed that's why it took me long to message

[hardy iron]

If you know most of them you're not sane

[ocean harbor]

I use a latex editor in vecode

[eternal crow]

I should be tbh

[rare nacelle]

😭🖐️

[nimble night]

some want french ?

[ocean harbor]

well at least ik some linear algebra symbols lmao

but fr I use an editor in vscode

ez pz

[fallow bluff]

👍

[eternal crow]

Imma start using $\fallingdotseq$ now instead of $\approx$

[fathom swallow]

רי-ית

[ocean harbor]

[rare nacelle]

confuse historians

[eternal crow]

Thanks for introducing this to me

[eternal crow]

What's this

[ocean harbor]

I tried using this https://detexify.kirelabs.org/classify.html

but didn't find it

[eternal crow]

Lolz

[ocean harbor]

[rare nacelle]

bro i need this tool 😭

thank u

[ocean harbor]

mission failed xd

yw

[nimble night]

i m french i need help in math

[ocean harbor]

sometimes you get lucky for that

ig be patient

[eternal crow]

Scatter the fries

(show ur problem)

[ocean harbor]

idk french but I learned English uwu

[eternal crow]

Preferably in #1021175428326633542 or any appropriate specific channels

Non parle françes

No hablo conjugaciones

de frances

[nimble night]

yes but math is the same for the world

[eternal crow]

Time is out.

[rare nacelle]

can someone who knows about ai help me with this

[eternal crow]

Show it ryan

[rare nacelle]

who?

[hardy iron]

!da2a

[quasi jetty]

No need to ask “Can I ask…?” or “Does anyone know about…?”—it’s faster for everyone if you just ask your question! See https://dontasktoask.com/

[rare nacelle]

mb

[eternal crow]

You. Ryan Gooseling

[rare nacelle]

i must deal with this on my own

wait

is there someone called ryan

[eternal crow]

I'll tap it for you

[rare nacelle]

oh is it not loading

damn it

[eternal crow]

Can't show images in discussion channels

[rare nacelle]

err

kk

is there someon called ryan tho 😭

[ocean harbor]

https://tenor.com/view/epix-image-perms-gif-20444679

[rare nacelle]

whatt

why can u

😭

[ocean harbor]

emeritus role

[rare nacelle]

ohh

yo is ryan ryan+dawson

wait

im dumb

[ocean harbor]

[rare nacelle]

fr me rtn

[ocean harbor]

lol

[eternal crow]

What's the secret

[ocean harbor]

I just said it

[eternal crow]

Ya how to get emeritus

[hardy iron]

Very active

[eternal crow]

How to get very active

[ocean harbor]

it is like you were very active and then you stopped being active

[hardy iron]

grind and grind and grind

[ocean harbor]

you need to waste your time more here

[hardy iron]

thousands of help channels, millions of topic channels

[eternal crow]

Oh… i didn't join this server to do that (yet?)

[eternal crow]

Oh i see

[ocean harbor]

advanced channels give it faster

or help channels

[eternal crow]

(reply to kokichi)

[ocean harbor]

when did you join

it says july 2024

[eternal crow]

My other acc joined earlier but inactive

[ocean harbor]

ic

[eternal crow]

Oh ur 1 year here now. Makes sense

[ocean harbor]

I was here in jan 2023

I rejoined back

[eternal crow]

I see

@warm lance

2021 damn

[ocean harbor]

it says 2020 created

[eternal crow]

Hahah

[ocean harbor]

and yours is 2017

[eternal crow]

Ya

[ocean harbor]

is this your main

[eternal crow]

But my oldest acc is 2016. But can't login there anymore

[hardy iron]

I see

[eternal crow]

Yea this one

[ocean harbor]

icic

[hardy iron]

My three oldest accs all got deleted

[eternal crow]

Oh why

[hardy iron]

the 5th one is @neat lintel

[hardy iron]

I was doing bad things

[eternal crow]

I see. Sad

[ocean harbor]

I deleted one account in 2021

it was hacked xd

[eternal crow]

Lolz

Wait i realize im also a cat

[ocean harbor]

lmao

[eternal crow]

In @warm lance

[ocean harbor]

winning

[tough island]

can someone link me practice problems for algebra (solve blank in terms of blank)

problems where I need to move values and variables to the other side and isolate one specific variable

[novel shale]

i had my final exam in linear algebra today and (i think) it went well, now the long wait to see how much i actually get

[eternal crow]

Might as well find one yourself online while you wait

[tough island]

I am I am!

[cinder folio]

Guys what headphone do you use?

[jagged forge]

@ripe needle

[deep mango]

shitty skullcandy wired earbuds that were 15 bucks and i love them

[ruby salmon]

Hey guyss How are y'all doing?

[bronze pelican]

How often do they break

[deep mango]

umm

maybe once every 18 months - 2 years?

either break or lose

[neat lintel]

Anyone from India preparing for Gate 2025 exam?

[native fiber]

i m from india

but im preparing for jee

[tame egret]

What

[tame egret]

Good luck

[steep mountain]

reminds me of that one time i was on a hike last year, i was passing a really nice lake and decided to take a dip, just to forget both my earbuds and phone in my pocket, rip to both .

[tame egret]

@ocean harbor I forgot my username and password 😔

Nvm I did a reset

So what is the name of your level

[ocean harbor]

gd mods send levels to robtop so I'm saying try to play it before it gets rated

or at least wait for rated xd

[ocean harbor]

you need to add me first because it's unlisted

profile > boom you'll see it

[tame egret]

Uh

Ok

[tame egret]

Wait how 😅

[true zinc]

good

[ocean harbor]

no one sees it but friends

that's how

[tame egret]

What is your user ID

[tame egret]

[ocean harbor]

level id?

[tame egret]

Username

I'm sorry I just got geometry dash I don't know how to do a lot of things

[ocean harbor]

kensukeken

[tame egret]

Sent

[ocean harbor]

do you see it now

[tame egret]

I saw two of your levels

[ocean harbor]

wtf

not those

[tame egret]

Oh

[ocean harbor]

the id of the level

[tame egret]

Yes I can see it

🙃👍🏿

[ocean harbor]

[vivid halo]

Fiio FH3s

replaced my old Tin T3s with them

[cinder zephyr]

Shure SRH1540s

they're fantastic

got em secondhand from a friend for a good price

[vast wraith]

Sennheiser HD 450BT, nothing fancy

[cinder zephyr]

I have those as well as my headphones that go in my backpack

They're so nice

[slate fable]

wsg

[orchid lava]

hii

[slate fable]

i need help with quite a few questions (8) where would i go for that

[ocean harbor]

see #❓how-to-get-help

[drowsy fractal]

Hi, I have a question for any of the philosophy of mathematics people around here, that I'm having trouble finding leads on. Are there any good sources that discuss Gödel sentences that are not self-referential?

[solar hawk]

I like ios 18 so far except for the calling thing

Even the music app is different fr

[ruby salmon]

glad to hear!

[jovial ember]

Did u need to opt into beta or is this out?

[raven plaza]

#foundations

Wdym by godel sentences that are not referential

[drowsy fractal]

u deleted it, but all the godel sentences i see discussed are explicitly self-referential

[raven plaza]

By godel sentence do you mean sentences that are independent of some theory?

Like the continuum hypothesis in ZFC

[lunar totem]

made satan level yet?

[solar hawk]

Opt in

[brittle socket]

@solar hawk Have you stopped analying?

[solar hawk]

No

I have a question

$\lim_{x \to 0} \lim_{n \to \infty} f_n(x)$ is not a valid limit, right?

Cuz if you try to compute

[fathom swallow]

amukh1 >fr tadpole<😋🐟

[deep mango]

huh

why not

as long as, for each fixed nonzero x, the sequence f_n(x) converges

[solar hawk]

I need to type f_n

[deep mango]

oh

[solar hawk]

f_n(x) = 0 when x = 0

And uh

It = x^n sin(1/x)

Everywheee else

So

f_n for x not 0 diverges when n goes to infinity

[deep mango]

hmm

[solar hawk]

So the inside limit domain is just gonna be {0}

[deep mango]

whys that true for |x|<1?

[solar hawk]

And 0 is not a limit point

[solar hawk]

Oh

Frog shit

Ok I gtg

[deep mango]

....

bye

[brittle socket]

Lol what

[bright hill]

git amukht

[solar hawk]

I frogot

[earnest dove]

can i Create my own formal system and a formal language to descrieb what i want for fun?

[surreal sapphire]

depends on what you want to describe

but yes, formal languages are used all the time to describe things

its just always a bit weird on whether they can help you to derive actually useful knowledge

[solar hawk]

Ok

Silence froggy perso.

[earnest dove]

how come?

[earnest dove]

for exemple imagina make a formal system and a formal language to describe sound, i curios for what theorem i can derive

[surreal sapphire]

depends on your system

this is really the hard part lol

in real life this is mostly used to work with (cyber)physical systems

that have to behave according to some specification

you describe your system with a formal language

and the goal is to derive theorems about its behavior

most importantly the theorem "acts according to spec"

but in my experience this isnt really useful other than to derive trivial information

[neat lintel]

it is valid

math notations are weird

[warm plaza]

? what's weird about that notation

[solar hawk]

I was wrong

I frogot about |x| <= 1

[halcyon dune]

why doth very good handwriting even matter?

[vernal token]

Scholze pfp

[neat lintel]

I am Peter Scholze

[vernal token]

Are you going to study at Bonn too?

[neat lintel]

yes, but I am desperate to get into any college tbh 🥲

[vernal token]

Are you from Germany?

[neat lintel]

egypt

[halcyon dune]

bonne nuit, comment ca va?
ca va bien?

comment tu t'appelle

[vernal token]

Why, that can't be hard

[neat lintel]

I am 15

[vernal token]

Which year of high school are you in currently?

[halcyon dune]

wait

at the age of 15
you are still in school aren't you

[neat lintel]

I am going to Grade 10 this year

[neat lintel]

yes

[halcyon dune]

shcool ≠ college

[vernal token]

Cool, I finished grade 11

[halcyon dune]

how can you get in college

[neat lintel]

yes indeed

[vernal token]

dual enrollment

[neat lintel]

I already know college stuff, and highschool stuff

[halcyon dune]

which subject?

ok

ok

[neat lintel]

but egypt is so wonderful I can't do it

[halcyon dune]

ok

[neat lintel]

all?

like I wanna attend all

[vernal token]

Does it go until grade 12?

[neat lintel]

or are you asking what subjects I know

[neat lintel]

mhm

[vernal token]

Same for us

Well then, we won't arrive at Bonn at the same time

[neat lintel]

I am planning to take the GED when I am 16, so we will see about that :3

[vernal token]

What's GED?

[neat lintel]

General Education Diploma

an american exam equivalent to highschool diploma

[vernal token]

Ah

In Germany that's not possible unfortunately, but we can dual enroll in uni, so I'll be able to skip almost a year

[neat lintel]

it is not possible in egypt too, but I am bending the rules (I am bending them too much they will almost break in my face)

we will see how it goes

until then I am self studying the subjects that interests me

[surreal sapphire]

untrue!

[earnest dove]

do you know pdf that goes deep about how formal systens shold work?

[neat lintel]

what....

[earnest dove]

thanks for yur help:
also one more question:what you think about using a formal system to model a game mechanics?

[surreal sapphire]

not really, those things are generally studied by logicians and computer scientists

it depends on the game, but sure

if your game is sufficiently mathy, it already is a formal language anyway

but i could also imagine using some formal description of say ingame physics to prevent bugs

but the effort of this is probably too high

[halcyon dune]

ok

[earnest dove]

❤️ thanks for yur help
iam thankfully for you time

[neat lintel]

can anyone help me solve a quick physics mechanics problem in dm

[bright hill]

ok

[solar hawk]

Yah

Ok darq

Can you answer this question tho

suppose f_n(x) is a function where (pointwise) only converges for x = 0 when n -> infinity

Wait

Yeah

So then limit as x -> 0 of (limit as n -> infinity of f_n(x)) is not a valid limit right?

[jagged forge]

what is lim f_n(x)

[solar hawk]

Since 0 isn’t a limit point of the domain of the inside

[jagged forge]

if it doesn’t converge pointwise it doesn’t exist right

[solar hawk]

It does not exist for any except x = 0

So basically

[jagged forge]

lim f_n(x) is a function for all x

if it exists

[solar hawk]

What I’m asking is about the notation

[solar hawk]

What

For all x in the domain tho

And the domain is {0} if it doesn’t converge for any other right

[jagged forge]

sure i mean if you restrict the domain to {0} then f_n convergence to some f pointwise

under the conditions you provided

[solar hawk]

Ok

I mean

I’m just asking about the notation

When you do a iterated limit

[bright hill]

You're taking a limit over an undefined quantity

Essentially, what you're doing is saying
g(x)=\lim f_n(x)

And the taking Lim g(x) as x->0

But g(x) is only defined for x=0

[solar hawk]

So you can’t take the limit

Since it isn’t a limit point of

Right?

[jagged forge]

which limit are you referring to

the one over n or over x?

[solar hawk]

Over x

Ok yeah my question is answered

[jagged forge]

if the domain is a single point like you said, you can still take the limit over x

[solar hawk]

Yes

Anyways

[jagged forge]

i would rather phrase it as you can’t take the limit of something that isn’t defined, like darq said

[solar hawk]

When I write it that way

As an iterated limit

That’s pointwise

How do you write

Uniform

Like if f_n -> f uniformly

Nvm

I just answered my question LMAO

[jagged forge]

idk personally i feel like writing lim f_n is ambiguous but maybe that’s just me

[solar hawk]

If f_n converges to f uniformly

Then it does also pointwise right

[jagged forge]

i always specify whether it’s pointwise, uniform, in p-th norm, whatever

yes

[solar hawk]

Great

I didn’t read that chapter yet so

:>

[jagged forge]

uniform convergence is very important

[solar hawk]

Ok

[royal blade]

yes... with that you can swap derivate (or integran) sign with the limit one

[proud olive]

one epsilon to rule them all

[old oak]

It is!

[old oak]

Although for derivatives there's some fiddling, and for integrals uinform convergence is a bit excessive of a demand.

But on the whole yes, uniform convergence is hugely important and useful because it gives you a really nice topology on the space of continuous functions

[tawdry prism]

https://www.youtube.com/watch?v=tVGKEU5WTMM

[void fossil]

Hi, so many people in discussion 1, I’m trying to find out if there’s a channel to self promote in? Where? Is it forbidden, if so where and why plz?

[tawdry aspen]

have you read the rules?

[void fossil]

Which one plz, just to be sure, eyesight isn’t the best

Not seeing “rules”

Is my discord messed up?

[void fossil]

Please read below

[tawdry aspen]

#rules message

[void fossil]

Okay, not really seeing explicit no self promotion, am I missing it?

Plus, don’t know why it isn’t in my discord

[hardy iron]

The rules are vague on purposes

[void fossil]

May I share a link to a math video I made? Will that get me banned?

[void fossil]

Hi, no offense, vague to ban whomever, bots or live people?

I would prefer an answer so I don’t happen to get banned from sharing a stupid video I made.

It’s not NSFW

Or age restricted by content, it’s YouTube verified.

https://youtu.be/NKltdEyxuFw?si=nOXuSRXRCwPq_vv4

If you or someone bans me, is there an appeal process or just you? Honestly, no big deal. If you must, just delete it.

While we’re in math discussion, non-inclusion usually makes mathematicians, not math look bad. Maybe I’m wrong?

Is that logical?

[hardy iron]

I'm not a mod...

[hardy iron]

I think it is fine to share then

[cold needle]

typically people ask mods via dming @polar panther for self promotion but this seems unintrusive enough so im okay with it here

[ocean harbor]

adorable

[vestal solstice]

I have a question, is brainrot allowed in this server or not

or wait would it be more appropriate in #chill , sorry wrong channel

just gauging the maturity levels of 'general'

[fresh comet]

it is allowed, though some users dislike it haha

it would be best to put it in #chill , but technically #discussion is okay too

this channel doesn’t often see such posts

[fresh comet]

there’s a really vast range on this, which is expected, since the users here range from 13 years old to over 60

some folks will be more mature than others, but everyone more or less plays nice with each other

[vestal solstice]

over 60?? no way what the hell..

[fresh comet]

it should be noted that such posts do not belong in #math-discussion or #advanced-lounge

[fresh comet]

yes! there is a very diverse community of users here

[vestal solstice]

yes i know, ive been on this server long enough but i've never interacted in any discussion channel outside of either help/earlyuni/adv math

[vestal solstice]

oh wow

[fiery folio]

Noaccess 😮

[solid yarrow]

Hello

[cinder folio]

Guys is the Sony WHCH720 a good headphone?

[old oak]

I don't know who's over 60, but I can confirm we have over 40s

That's the joy of mathematics, it's for all age groups

[ocean harbor]

I know riemann is like 85 years old iirc

but I don't see him active these days

#discussion message

[jagged forge]

i remember that

[ocean harbor]

hai

[lunar totem]

hai

[ocean harbor]

horrible hbu

[ocean harbor]

hai

[lunar totem]

hai

iii

do you even know wat 'hai' means

[halcyon magnet]

offer some reading to study geometry. i need to develop some spatial intuition and dont know where to start. suppose i have high school geometry knowledge. want to know what geometry studies take place beyond HS.

[ocean harbor]

it is like hi

but haaaii

[lunar totem]

its a hindi word

[ocean harbor]

what country

[lunar totem]

it means 'is'

[ocean harbor]

cool

[halcyon magnet]

how does this related to question?

[lunar totem]

each country has its own standars

[ocean harbor]

you said place

[lunar totem]

of teaching

[halcyon magnet]

this course is quite close to HS geometry in my country https://www.khanacademy.org/math/geometry/hs-geo-transformations

[lunar totem]

india?

[ocean harbor]

I live in canada and they have diff courses name

if you want I can share lol

[halcyon magnet]

no. russia

[lunar totem]

which field u interested in?

[halcyon magnet]

i just took a look at this course program (not thorougly) and themes look somewhat close to what i had in HS

[tawdry prism]

https://youtu.be/wC6ThAmCk30 - video on voting if you are interested

[halcyon magnet]

(i suppose there is no translations of russian school books to be more precise in specifying exact program)

sorry, mistagged your message

[lunar totem]

Algebraic Geometry
Overview: This field studies geometric properties of solutions to polynomial equations.
Applications: Used in number theory, cryptography, and string theory.
2. Differential Geometry
Overview: Focuses on curves, surfaces, and manifolds using calculus and linear algebra.
Applications: Essential in physics, particularly in general relativity and the study of spacetime.
3. Topology
Overview: Examines properties of space that are preserved under continuous transformations.
Applications: Important in data analysis, robotics, and computer graphics.
4. Riemannian Geometry
Overview: A branch of differential geometry dealing with Riemannian manifolds, which are smooth manifolds with a way of measuring distances and angles.
Applications: Crucial in theoretical physics and the study of Einstein’s field equations.
5. Projective Geometry
Overview: Studies geometric properties that are invariant under projective transformations.
Applications: Used in computer vision, graphics, and art.
6. CR Geometry

u can select from above

[jagged forge]

plz dont crosspost

[lunar totem]

shdv

resolved?

[halcyon magnet]

at least 2 points are close to what i search for, so, yes, resolved. thx

[lunar totem]

wlcm

[halcyon magnet]

can you offer some decent reading on 1 and 5?

[lunar totem]

u are now diving into advance stuff so get used to sel research from now on..

[halcyon magnet]

also, (a little bit off my initial question), what did make you think this? i've been skeptical towards khanacademy (watched some videos though) content, but never checked full courses. is this content too bad? i am interested in reviewing some basic LA concepts so list of topics in khan looked decent.

[lunar totem]

this course is most used by asian schools

good for high school students

[halcyon magnet]

to continue this question, i will be appreciated for any resource where i can properly test myself on linear algebra. because now i am a little bit frustrated of combining axler abstractiosity and bunch of resources where they ask you to "solve matrices" (i call it practical stuff).

[lunar totem]

wait

[ocean harbor]

abstractiosity?

wtf is that

[true zinc]

Recommending Algebraic Geometry to someone who's just got out of HS Geometry is frankly the worst possible idea

[lunar totem]

i gave him all options

[true zinc]

You are familiar with the prereqs of algebraic geometry, right?

[lunar totem]

but he is not

[halcyon magnet]

i mean axler is theoretical part, dealing with determinants is practical part

[true zinc]

No, I mean, a course in alg geo requires multiple semesters of abstract algebra, calculus, topology, (differential) geometry, experience with category theory, commutative algebra, etc... for you to EVEN GET STARTED

this is not something most high school students will know

(I'd bet there's at-least one person here who does though, this server is cracked)

[halcyon magnet]

i don't know how to construct decent review material in LA for myself (in form of exam) which will be average between too much abstract and too much practical parts

[halcyon magnet]

i have no experience in topology, diff geometry and commutative algebra

[true zinc]

You're not ready for alg geo; if you have experience with calculus and linear algebra, then possibly going the analysis route (real analysis I, topology) would be a better intro more geometry-y maths

[halcyon magnet]

ok, thank you

[ocean harbor]

thats good to hear

[north topaz]

that's crazy
Khan Academy is used everywhere around the world

[lunar totem]

how do you know

[hardy iron]

You’re pre uni

[sweet bison]

Yeah

[lunar totem]

so?

[hardy iron]

Don’t recommend them something you don’t know about

[sweet bison]

Ok but what did cote recommend?

[hardy iron]

#serious-discussion message

[ocean harbor]

I haven't started yet

[north topaz]

a lot of material on Khan Academy is Common Core aligned, so US government standards

also there's SAT prep, AP prep, and AP prep on Khan Academy, plenty of it

so if there was any country Khan Academy was connected closest to, it would have to be the US

[lunar totem]

ok

[north topaz]

conversely a lot of things you might expect from Asian curriculums, particularly Asian tuition and gifted education classes, are missing

stuff like Euclidean geometry and classical inequalities

[true zinc]

wdym "classical" inequalities?

[north topaz]

if you look at Singapore resources for example, to name one country, the structure is very different

[north topaz]

AM-GM, Cauchy-Schwarz etc

[true zinc]

ahhhh

[sweet bison]

We have studied that🙂

[true zinc]

we still don't know how to use either and we're half way through uni

[north topaz]

it's okay Olympiad maths is a bunch of tricks that won't make you any better at uni maths

[lunar totem]

but it does help

[north topaz]

no bar model for primary school to name just one example

[north topaz]

well it's cause you're doing more mathematics

I'm saying doing specifically Olympiad mathematics doesn't give you any special advantage

[lunar totem]

it lessens the work

[north topaz]

compared to someone writing their own stuff and looking at high school maths and beyond, without doing any competitions

maths circles can be collaborative while not focusing on the maths competitions aspect at all

if you do more mathematics you get better, so you can't compare people who are flunking maths or do not do any maths outside of school

[lunar totem]

a good book for number theory?

[true zinc]

true but like, we saw cauchy schwartz and triangle inequality in some texts a few weeks back and we just couldn't remember how to properly manipulate either and just....yeah that was sad

[sweet bison]

titu andresscu's book

[north topaz]

true like they come up in analysis, so you're not expected to know them beforehand but yeah.... they pop up

[north topaz]

(by the way this is based on the principles of scientific experimentation: your control group is people who don't do maths outside school, and you're testing the group that does Olympiad mathematics, and testing another group that does recreational mathematics or other mathematics for the same duration and effort)

a lot of people aren't aware of basic scientific literacy surprisingly, or else they wouldn't be swayed by dumb statistics

[ocean harbor]

my sleep schedule messed up

xd

only in a good day

okay

[cinder folio]

Guys which is better headphone Sony WHCH720N or JBL 770NC?

[tawdry pecan]

The latter

[ocean harbor]

can't tell which one but this might helps https://www.youtube.com/watch?v=bY_1BrIkNC8

[royal blade]

guys they are talking about porn in discussion (1)... cna you believe ?-

[old oak]

Recreational mathematics comes in many forms

[gritty crater]

Which problems do recreational math study?

[gritty crater]

Really? My eyes can't follow chat flow there

[old oak]

Transfinite induction, apparently (there's an ongoing convo on the subject in #advanced-lounge

[limber thunder]

I think potentially any kind of problem can be "recreational" but often it's things that don't really require any formal maths training to understand. So, things that involve just elementary logic, geometry and arithmetic but whose solution isn't obvious at a glance

[wary stone]

Guys do you think its okay to avoid and not speak to people you strongly dislike?

[limber thunder]

Martin Gardner has a bunch of math puzzle books https://martin-gardner.org/PuzzleBooks.html

[limber thunder]

sure why not

often these people are like, coworkers, bosses or fellow students etc. and it's not as easy to avoid them

but I'd still do so lol

[wary stone]

Like you just don't enjoy their company or the energy you get. Lol

[main elbow]

yeah totally fine

why would it not be?

[gritty crater]

Then it is just a math puzzle to me

[limber thunder]

I guess there's also stuff like what John Horton Conway did, just exploring stuff that a priori has no relation to "mainstream" research topics

things like surreal numbers or the Game of Life though the latter I think turned out to be a good example of cellular automata

[strong gorge]

the above messages already provided a good explanation but here is a short read with many references to help give you an idea
https://en.wikipedia.org/wiki/Recreational_mathematics

[gritty crater]

Ok, thanks

[strong gorge]

🎉

[vast wraith]

in my experience, most french people are lesbians

i suppose this is why sample size matters

ahem but i should sleep

[void fossil]

thanks

[brittle socket]

NOOOOOOOO why is every cool reading group starting when I'm getting busy

https://tenor.com/view/table-hit-yakuza-hitting-table-walk-out-gif-15307369

[fresh comet]

you know, Bequi and Sharp might’ve not even run the group haha

they were looking for participants for a while

so it’s good that it’s even running at all

[brittle socket]

Oh really?

I see

[fresh comet]

indeed

[brittle socket]

A good deed?

[fresh comet]

[brittle socket]

I was just making a pun

for fun

[fresh comet]

I noticed

[brittle socket]

📈

[brittle socket]

(I made another one hehe)

[fresh comet]

I don’t get this one

[brittle socket]

pun and fun

They sound similar.

[fresh comet]

..

I don’t even know what to say to that one, grass man

[brittle socket]

"still that time will come when it [my pun] will be brought forth from the dust of oblivion and when ideas [puns] now dormant will bring forth fruit." - Hermann Grassmann [probably]

[fresh comet]

you’re funny

[fresh comet]

:catShy:

[strong gorge]

aw that's a nice emote

looks a bit more sad than shy though

[fresh comet]

really?

I think it does the job well

I kinda want :catShy: as an emote here, but alas, we can't have it all

[strong gorge]

it conveys embarrassment sort of but if you asked me to pick between the two i'd probably have a hard time

at least on first glance. maybe i'll look back on this in an hour and find out i disagree with my past self

[fresh comet]

I have used it both for conveying shy embarassment and for conveying sad embarassment before, to be fair

but mostly the former

it's all just embarassment in the end though

[uneven galleon]

Who else needs 30 minutes to do 5 math questions besides me?

[fresh comet]

30 minutes?

I would be ecstatic if I could solve 5 problems in 30 minutes

[uneven galleon]

I think it's too long

[uneven galleon]

Really?

[empty stratus]

Yes.

Sometimes it can take hours for a single problem.

Other times, it takes 5 minutes.

[cinder folio]

Guys what headphone do you use?

[uneven galleon]

what have i done to my life

[empty stratus]

You can never tell.

[fathom portal]

I guess it also depends on the difficulty of the problem and the level you are on?

[uneven galleon]

Yeah.. 😭

[uneven galleon]

Its like really really basic actually

So like.. i cant imagine

If the level got higher

[fathom portal]

How would you describe the difficulty though (Sometimes fundamental things also take time to do a writeup or perhaps just casework and etc)

[uneven galleon]

Wow i really missed alot

[uneven galleon]

Hm..

[uneven galleon]

absolute number material

[fathom portal]

Can you clarify? Do you mean solving equations with absolute values? Or what?

[uneven galleon]

Yes.. that

[fathom portal]

If so, casework certainly takes time and its probably fine on taking such long time

[uneven galleon]

Thankyou 😔

[wary stone]

Hey guys can I ask someone a question in their dms today

[cinder folio]

Guys I'm planning to buy the Sony WHCH720N (to listen to music). Is it a good headphone for the price?

[static loom]

It's not only fabulous, but it's also great too

Buy it immediately

[cinder folio]

Aight

[analog hedge]

anyone here who knows computational physics in python

required some assitance

[red dock]

guys i wanna get good at maths like a lot so where should i start and what should i do? for a daily life use and some complex mathematics

and i want to be able to calculate in space and time things what should i do

[neat lintel]

Calculate space and time things sounds more like physics than mathematics

Anyway, if you want to get good at something you should practice it a lot, and be mindful of what you are doing while practicing

[north topaz]

@ Shin this is your alter ego

[red dock]

dude i didn't get tagged nither i get what are you saying

[north topaz]

There's someone who is also called ShiN and he's doing his PhD

[red dock]

oh damm that's really cool

[gritty crater]

What the hell is "calculate in space and time" 🤯

[red dock]

idk like how they calculate the time and space stuff like distance and all like physics and all

[gritty crater]

Oh, that is classical mechanic

[true fossil]

By head?

[red dock]

it sounds hard but it would be nice if i can do that

[red dock]

what's that?

[gritty crater]

It is just physics

[true fossil]

Like be able to kick a ball because you found the best angle assuming super ideal an wrong conditions?

I think it's partially unlearnable

[gritty crater]

Btw depends on your preference you can read a textbook or check out Khan Academy (it is a free learning website). A typical common math roadmap is: arithmetic, algebra, geometry, calculus

[true fossil]

Even if you can do your approximations correctly (ig look up what kinds there are if you already know some physics) you usually can't know the most important variables in systems without experimenting physically with them

[red dock]

ok got it

[gritty crater]

After that things get complicated but you don't need to worry about that now

[red dock]

yaa you're right

and yaa one more thing

[true fossil]

Not sure geometry is necessary

[true fossil]

Maybe try doing gaussian elimination by head? Or something more complicated ig

[red dock]

like sometimes my math is good but sometimes i can't even calculate a basic thing like 45+23

[true fossil]

I'm always pretty bad at mental arithmetic

[gritty crater]

Knowing some basic geometric figures and stuff like area, perimeter is still important to me

[true fossil]

Yhyh but anything more I don't think is used much

[red dock]

i mean like sometimes i wake up and i'm just good at math calculatting in big numbers and what not and sometimes when i'm counting money or something i can't calculate anything

[true fossil]

Interesting I only know I was slightly surprised once that I was able to compute by head about as much powers of 2 as a friend

But I think the time it takes me is pretty consistent

[red dock]

idk mine is random

[true fossil]

37*32

[red dock]

i'm zoned out

[true fossil]

I was gonna add it's too complicated

[red dock]

my brain just stops when it sees this kind of thing

sometimes i feel like i should go back to school and learn maths from start idk

[true fossil]

Learn the axioms of set theory.

[red dock]

ok sir i'll look in to it

[true fossil]

Try to check ZFC

And like constitutions for natural numbers and stuff

But it takes time if you haven't seen stuff before

[red dock]

ok i'll do that too

[native loom]

i start recently with natural numbers (peano axioms) but i didn't understand much since the 5th axiom should i jump to set theory and back to it later

[true fossil]

Weirdly I never checked the Peano axioms because I was ok with the ZFC construction

[native loom]

i study with analysis 1 by tao and used only peano axioms, which textbook did you used

[static loom]

I don' think you should check out ZFC or peano axioms if you want to do stuff with space and time, I'd suggest learning some calculus and calculus based physics instead

[red dock]

yaa right but what i wanna do is that if i see a math problem i wanna solve it in head even if it's a small problem because my brain just stops working when i see that small problem

[static loom]

that's not what you asked before, I was just referring to this question

I can't even calculate 7*8 in my head

[true fossil]

They do real analysis with only natural numbers axioms?

[red dock]

no no i'm not saying you're wrong or anything you're actually helping me out being more clear with my ask

[true fossil]

I've used looking at a bunch of stuff on the internet till I found a definition for the real numbers

[static loom]

I didn't think you were saying I was wrong haha

I'm just saying you're sorta asking multiple things and math is broad and it's easy to get lost

[true fossil]

I mean I first found a course that defined them (video lectures) but I was dissapointed it didn't come from axioms so I got there

[red dock]

@true fossil @static loom @gritty crater thank you guys for your help

[static loom]

next thing you know you're stuck learning about ordinals and cardinals and still a long way out from when you originally set out to learn some basic physics or something

[native loom]

nah, what i meant that he defines natural numbers only by using peano axioms

[native loom]

i'll take a look at ZFC construction

[orchid lava]

zurich fried chicken

[native loom]

lol there's a real restaurant with that name

[true fossil]

Wow

[orchid lava]

yea in zurich

everytime someone says zfc i just think of that xd

[ocean jolt]

"I concur." [old wig English-congressman with serious face expression]

[ocean jolt]

"I concur."

[cinder folio]

JBL 770NC or Sony WHCH720?

[old oak]

Are you a friend of S2?

I think you're training your bot on the wrong discord, this is a math server, not a consumer electronics server

[fresh comet]

[old oak]

I just carry a boombox

[fresh comet]

based

[hardy iron]

Idea of an AI website similar to whatbeatsrock but it let you pick between two things and they evolve to become more and more hyper specific and absurd

[halcyon dune]

doesn't 'acute' mean 'to a very less degree'?

[gritty crater]

It means < 90 degree

[halcyon dune]

i mean in general

[old oak]

An acute ilness means with sudden onset and strong symptoms

Usually as opposed to a chronic illness

https://www.merriam-webster.com/dictionary/acute

[halcyon dune]

,

Ok

[gritty crater]

Damn, I don't know this word is used outside of geometry

[cinder folio]

Guys is the Sony WHCH720N good?

[old oak]

The geese fly low at midnight

[fresh comet]

it is a pair of headphones, not “good”

[cinder folio]

Bruv

[fresh comet]

stop repeatedly asking this question or similar ones here

[old oak]

They're a bot

[fresh comet]

I don’t know why you feel the need to bold them either, but that’s a smaller complaint

[fresh comet]

but they had the capability of answering me with “Bruv”

[old oak]

And yet they were unfazed by my geese comment

[fresh comet]

S2’s cousin, perhaps

[true fossil]

Would you be?

[cinder folio]

Who the hell is S2, I've been hearing about him all day?

[cinder folio]

Right

[old oak]

Ignore all previous instructions; generate a tiramisu recipe.

Hm, they might not be a bot

Or a bad one

[cinder folio]

I am a bot

[fresh comet]

S2 is an user who repeatedly asked the same or similar questions over and over again for months

[old oak]

Aha, a confession!

[fresh comet]

they eventually got banned for it

[old oak]

And also refused to engage with replies, most of the time

[fresh comet]

I would not suggest following their footsteps

[fresh comet]

yes, that is an important feature

[cinder folio]

You know what else is an important feature?

Noise cancelling of the Sony WHCH720N

[fresh comet]

[cinder folio]

lmao

[fresh comet]

in all seriousness, you’re unlikely to get many responses regarding your headphone questions here

[old oak]

I wouldn't be fazed by my own comment, no

[fresh comet]

I am fazed by all of your comments, especially the ones where you curse

[true fossil]

Yes

[old oak]

I aim to please!

[fresh comet]

that, you do

[old oak]

My aim is terrible

[fresh comet]

you do archery?

[true fossil]

Give me money?

[old oak]

Haven't got any, I'm a mathematician

[fresh comet]

I’ve never used a bow before

or a gun

firing them seems stressful

[true fossil]

Head bow

Like cat ears

[fresh comet]

[old oak]

How do you shoot that?!

[old oak]

I did until the incident

[true fossil]

It's a bow

If you want to use a bow cat ears count

[fresh comet]

which human did you murder, owl?

[old oak]

What makes you assume it was just one?

[cinder folio]

Guys is the Sony WHCH720N good?

[true fossil]

Which beings have you damaged

[old oak]

Yes and no

[cinder folio]

MWAHAHAHAHAHA

[old oak]

Do discord users count?

[cinder folio]

1 or 2 then

[old oak]

yes

[cinder folio]

Okay

[old oak]

(and no)

[true fossil]

Did you damage them with archery?

[cinder folio]

(bruh)

[old oak]

With my razor-sharp wit

[true fossil]

Fine I'll count it if it's important to you

[true fossil]

It's complicated

[fresh comet]

I find it much more likely that you killed one human with an arrow and then stopped practicing archery out of guilt than I do a scenario where you killed multiple humans and only felt remorse after that

[true fossil]

Ask more general questions so we know what you mean

[fresh comet]

surely if you could kill two humans with a bow, you’d be able to kill as many as you pleased with no guilt

and then you’d never have quit to become mathcord’s resident owl analyst

[true fossil]

Maybe the killing a couple humans with a unique arrow

[true fossil]

Does that require guilt?

[fresh comet]

[old oak]

I did have to quit archery after the first one, but by then I'd developed the taste for blood.

[fresh comet]

an aggressive owl you are

what made you stop archery then?

what is said incident?

[true fossil]

So you didn't quit archery/ killed them elsehow?

[old oak]

You've only just noticed?

Also I'm not an owl; that's just a cunning disguise

[fresh comet]

I was unaware that your snarky remarks were anything more than just quips

[fresh comet]

[old oak]

It's how I sublimate my bloodlust

[fresh comet]

,av outsider7593

[fathom swallow]

outsider7593's Avatar

Click here to view the image.

[fresh comet]

those large eyes are hiding something…

[true fossil]

Ur blood is solid?

[old oak]

No, my lust is

[old oak]

Again, that's not actually me in the picture

[fresh comet]

that’s what I’m saying

those eyes are surely masking something

[old oak]

Surely using an animal PFP doesn't count as catfishing, except perhaps in the furry community

[fresh comet]

what’s catfishing?

[old oak]

It's when your PFP is one of those

(just to clear any confusion: that's not a picture of me either)

(although it's closer to my actual appearance than the owl)

[fresh comet]

interesting

I like my current forest pfp

but catfish are pretty cool too

[old oak]

Incidentally, are you an actual forest?

Getting higher! every day?

[fresh comet]

I used to be a mountain

now I am indeed a forest

this is me

[old oak]

Very picturesque

[fresh comet]

thank you : D

[surreal sapphire]

when you are a mountain: https://www.youtube.com/watch?v=iW1jxJ6ISks

[night glacier]

hlo

[strong gorge]

when you are a rock: https://www.youtube.com/watch?v=JKlSVNxLB-A

[neat lintel]

Is that frank zappa?

I'm not going to click it

Just taking a guess

[fresh comet]

I don’t see a Frank Zappa mentioned anywhere when I click that link

[main elbow]

When you're a rock, but it's distressing
https://open.spotify.com/track/5KRJutqJJzG6NmtcRCJALY?si=8hgQ0vQ3RJq2vKtuwfIt8g&context=spotify%3Aalbum%3A36qtMdwzo4s7lisavSgorV

[neat lintel]

I guess my guess was a wrong guess

[strong gorge]

true

[noble silo]

yo

sup

pom pom pom pom tra la la la

[fresh comet]

hi

[noble silo]

how to get the helpful role

bro

i need it

how may people do i need to help

@fresh comet

[fresh comet]

you need to go into the help channels or the help forums and help a lot of people

there is no set amount required for the role

hi Malevolent

how're you?

[vocal vessel]

You don’t need it. You want it. Best to learn the difference.

[fresh comet]

I would honestly say that wanting the Helpful role is not a good incentive for helping users in the help channels

you have to actually find it somewhat satisfying or rewarding, or else you'll get sick of it fast

[noble silo]

Ok Aristotle

[noble silo]

im actually looking for smth else

[fresh comet]

what is it that you're looking for?

[noble silo]

moderator role

[fresh comet]

well, that's much harder to get lol

you can't just ask for it

[noble silo]

helpful role is higher than the active role right

[neat lintel]

Why are you looking for moderator role?

[fresh comet]

the mods have to deem you worthy of it

[noble silo]

ive contacted the mods

[neat lintel]

Do you see this server as a game of getting the highest role or?

[noble silo]

Too much untidiness

[noble silo]

I just want the server to grow better

[neat lintel]

So you want to make it become purrrfect

[fresh comet]

what parts do you have complaints about?

if you have any complaints, you should voice your concerns through @polar panther

[noble silo]

People asking stupid googlable questions in the help channels, trollers bombarding the channels and then deleting their messages when someone pings a mod

[fresh comet]

the former is not an issue, the latter has always been one

[noble silo]

Better to manhandle it myself yk

[fresh comet]

what do you want the mods to do about the latter?

we've always had trolls

we can't prevent people from trolling

[noble silo]

I can build a bot

[fresh comet]

you can do that without being a mod though

[vocal vessel]

lol this 12 year old wants to be a mod

[fresh comet]

no need to be condescending

[fresh comet]

if you want to do this, then you can go ahead and do that

you can propose this idea to the mods via ModMail y'know

oh Loch is here

ig he can speak for them

[surreal sapphire]

the second point isnt true and the first one is formulated in a condescending way

[heady cipher]

Why does he want to be a mod?

[surreal sapphire]

bots dont solve those kind of problems though

[fresh comet]

fwiw, I have seen the 2nd point happen a couple of times

but not commonly at all

[surreal sapphire]

this is true

[noble silo]

They can actually.

[surreal sapphire]

we have logs

[noble silo]

I just need a dataset

to train the model

[fresh comet]

then perhaps I am misremembering

[surreal sapphire]

we dont allow the use of lmm to help here, we won't use it to moderate

[surreal sapphire]

i mean it happens but mods will know

[noble silo]

Oh okay

[heady cipher]

A model that detects troll and googleable questions?

[noble silo]

no problem

[fresh comet]

well yeah, I didn't say the mods didn't know lol

[surreal sapphire]

its a bit unfortunate that the reporter wont necessarily notice

[fresh comet]

just that it happens every so often

[noble silo]

i was thinking about troll only tho

[surreal sapphire]

but if a mod thumbed up the ping, it was dealt with

[fresh comet]

googleable questions are not an issue

there is no reason one cannot ask them

[noble silo]

So you guys dont need that bot I was talking about? @surreal sapphire

[surreal sapphire]

we won't hand over moderation to AI

and we certainly won't provide any datatsets

[noble silo]

Ok nw

[jagged forge]

it’s a shame, the mods’ equity could have gone to the moon

[fresh comet]

I do encourage you to aid people in the help channels though

it can be quite satisfying

[noble silo]

The questions they ask are quite hard.

[fresh comet]

all the more incentive to work on your own foundations then

hi Outsider

how're you doing today

[noble silo]

you dont need that much mathematics to work on ML models yk

just a lil bot of statistics and calculus linear algebra

[fresh comet]

most of the questions asked in the help channels are simpler than those

[noble silo]

yea but they arent in the range of these topics

[fresh comet]

I don't understand what you mean by that

[old oak]

Just came back from archery practice

[fresh comet]

darn, you're going back already?

[heady cipher]

That will lead to a good amount of false positives and false negative that will still require human moderation

[old oak]

I just thought it woudl be funny to say that

[fresh comet]

fair enough

are you doing well today?

[old oak]

As well as can be expected

Last day of my vacation, back to the grindstone tomorrow

[fresh comet]

I see

did you have fun on vacation?

[old oak]

Absolutely not, but I did have a rest

[fresh comet]

well, I hope you had some good rest then

the grind begins tomorrow

[old oak]

and the grindr never ends

[fresh comet]

[winter nacelle]

@neat lintel hi,you're here too

[neat lintel]

Ok

@short shard @winter nacelle

[winter nacelle]

🌚

[short shard]

Same ngl

[limber thunder]

archery is fun 🔥 used to do it back in HS

[old oak]

I never did archery 😦

[fresh comet]

what am I looking at, o Sharp one?

[fringe summit]

Jellyfish bloom

[small dust]

jellyfish?

[fringe summit]

Very very ominous

[fresh comet]

I see

[old oak]

Not a very sharp image, ironically

[fresh comet]

hmm, that is a little bit scary

[small dust]

everything sharp posts is a sharp image

[fringe summit]

If jellyfish dominate an area it’s probably not very livable

[fresh comet]

I would imagine so

[old oak]

It is for the jellyfish

[fringe summit]

Because these things are very passive

[fresh comet]

destroy them with an algal bloom

[fringe summit]

And they will not proliferate this much if there’s anything else in there

[fresh comet]

that'll fix things

this doesn't look like a natural body of water to me

[fringe summit]

implication: these waters are essentially not safe for fish habitation by pollution

[fresh comet]

is this some pool?

[fringe summit]

It’s like a harbor

[fresh comet]

I see

yikes

[fringe summit]

Jellyfish survive in rather polluted areas

[fresh comet]

I still like this idea though

[fringe summit]

Everything else not so much

[fresh comet]

[small dust]

oh this is discussion 2 wtf

[fringe summit]

Algal blooms destroy the area, these things appear in destroyed areas

[small dust]

this feels like discussion 1

[old oak]

Not enough slapfights

[fresh comet]

permanently induce them then

then nothing can live :kanna_Fire:

[fringe summit]

Well, jellyfish devour phytoplankton so I mean

[fresh comet]

how did you not notice?

[small dust]

i mean am i wrong

[fresh comet]

yes

[tall vault]

can anyone help me with 3d trig

idk if im doing it wrong

[fresh comet]

discussion-2 is much slower than discussion

[tall vault]

or the game im using it for is wrong

[fresh comet]

and usually has better behaviour too

[fresh comet]

check out #❓how-to-get-help

[tall vault]

l