serious-discussion

[leaden torrent]

i dont remember why we mixed C and C++

rather than focusing solely on one

there was a reason but it was dumb

i think they stopped doing that in my last year there but i was TAing actual math courses by then

[cold needle]

ah

[torn willow]

Real graphics library

[vivid halo]

https://www.youtube.com/watch?v=OmaSAG4J6nw

analysts btfo

[vagrant kestrel]

physicists btfo

[rancid meadow]

these r some good slides

[urban oracle]

That differential equation makes no sense

[torn willow]

That's not a differential equation

That's deez x

[urban oracle]

lol

[compact tartan]

you can read them

[cold needle]

my course never taught me how to

so far i usually have guesses for what might be wrong but i stick to just going to the lines they tell me to and working backwards

[devout nacelle]

[compact tartan]

so the pro tip is to always locate the line that says "error"

it will be buried among a hundred lines that say "note"

[torn willow]

Is that a embi ban WR

[sharp mulch]

Does anyone have familiarity with ffmpeg

[neat lintel]

Hello

How are y’all

[hallow wasp]

y ask

[sharp mulch]

Well

I figured it out

[hallow wasp]

im just curious for what

[cold needle]

memes go in chill

[hallow wasp]

what meme?

[narrow rock]

What a silly question to even consider for a moment.

[broken scaffold]

what meme?

[thorn brook]

How important are the countability axioms for AT? Should you know a lot about them or are they irrelevant? This whole section is incredibly boring

Every single thing that has something to do with countability is super boring

[hallow wasp]

you mean like first countable and second countable?

[leaden torrent]

not super important, you can skim it

[thorn brook]

Yes exactly

[leaden torrent]

but some of the proofs feel similar to some of the proofs from early alg top (covering space type deal)

i cant really give a concrete reason for this

just similar "feel"

[hallow wasp]

what is difference between alg topology and geometry

oh

geomtry

[thorn brook]

Okay got it! I already read this section and now I'm on the exercises

there's a ton of them

every one looks super boring, I just want to skip them

[leaden torrent]

covering space proofs are also quite boring unfortunately lmao

alg top takes a while to get "good"

kind of the opposite of general top where it starts out "look at all the cool shit you can do" and ends with "no wait i wish we could do less cool shit all this cool shit makes it too complicated to keep track of what properties everything haS"

[hallow wasp]

covering space?

o nvm ill wiki

[thorn brook]

sorry my discord keeps crahsing lmao

that's exactly how I feel now. I started of with homeomorphisms and I was like "wow this is so cool" and now it's like "bruh why do I need countability axioms?"

[hallow wasp]

run on browser

[thorn brook]

But honestly, I think that the fundamental group things are really cool even tho it's a very early thing in alg top

But there might be “less cool” stuff coming up, idk

[hallow wasp]

why do you think there will be less coll stuff

[thorn brook]

idk, nami's post above says that alg top takes a while to get "good"

Like the only interesting thing that catches my eye in this section is the very last section about manifolds

[narrow rock]

you should be able to read the proof of the brouwer fixed point theorem

for disks

which is cool

[thorn brook]

yo that is really cool!

But like now?

[hallow wasp]

oh

i was supposed to learn that in analysis class

but teaacher was slow

[narrow rock]

if you know the definition of the fundamental group

[hallow wasp]

but we used it in a proof

[narrow rock]

and retracts

you should be able to read it

[hallow wasp]

bowzers fixed point was supposed to be in chapter 6

[thorn brook]

ouufff now I'm hyped again!

and motivated!

[narrow rock]

it's pretty short

[hallow wasp]

and we were on chapter 3

proving smnth with it

[thorn brook]

okay that's great! I won't read it now tho, I will spare it for a better moment

I still need to revise some stuff about fundamental things

[hallow wasp]

retracts?

i only learned deformation retract in topology

[thorn brook]

hmm I think that there was an exercise about retract in my book

[hallow wasp]

but went over v quickly so dont have any idea how retract generalizes

[thorn brook]

I could be wrong tho

I'm too lazy to check

[hallow wasp]

also

question about homotopy

why isnt there another notation for describing it

why gotta go through tedious effort of writing out end points of the loop

can there just be a way to write it all down quicker

because in class i remember having to write what f(s,0),f(s,1),f(0,t),f(1,t) intial values were

each time

[narrow rock]

if A is a subspace of X, a map X ---> A is a retraction if the composition A ---> X -->A is the identity map

[thorn brook]

hmm that smells like 🐈 🧠

Oh okay lmao I didn't know. When I see arrows I think of cat theory immediately

[rancid meadow]

this is your brain on lowmath

[ember finch]

I’ve begun to realize that homomorphisms feel a lot like morphisms

[thorn brook]

isn't a homomorhpism a morhpism?

[ember finch]

Yes

[thorn brook]

or am I crazy

oh

okay

[narrow rock]

homophobes feel like phobes

[narrow rock]

if X ---> A is a retraction, try to see what happens at the level of fundamental groups

in particular when X = disk, A = the boundary of the disk

[neat lintel]

[thorn brook]

wait are you referring to me?

Like is this exercise thing to me?

[narrow rock]

yes

[neat lintel]

brofibration is setting the exercise to themselves

[thorn brook]

yo sorry but I already forgot what the definition was

of the fundamental group, that is

I have only read a portion of Hatcher to read a proof with veryhappyperson

SSussy has been typing for a LONG time now

that's sus

[narrow rock]

tteppa is trying to do the exercise

[cold needle]

SSussy

master sussy

[thorn brook]

No, tteppa is going to write a whole phd thesis here

[neat lintel]

if $X_t$ is a smooth time dependent family of vector fields such that for each $t$ the flow of $X_t$ is $\phi_{s, t}$ then for any vector field $Y$, $$\left.\frac{d}{dt}\right|{t = t_1} (\phi{t, t_0}^Y)x = (\phi{t_1,t_0}^[X_{t_1}, Y])_x$$

[sharp mulch]

phi

[cold needle]

phi

[thorn brook]

phi

[fathom swallow]

SSussy

[neat lintel]

im on mobile

[cold needle]

Cry

[narrow rock]

WTF

[neat lintel]

brofibration do you know where i can find a proof thx

[cold needle]

dude really used fraction for d/dx

and not the one in the physics package

[sharp mulch]

I use frac for d/dx

[mild nebula]

I never remember it is there

[sharp mulch]

Because I don't like the non-slanted d

[neat lintel]

symplectic geometry books all seem to treat the case when Y is a form

but not when it's a vector field

[narrow rock]

just prove it

it cant be that hard

can it

[neat lintel]

i thought about using the isomorphism between fields and forms to deduce it from the formula for forms but idk

[narrow rock]

[sharp mulch]

Coordinate bash

[neat lintel]

pain

but maybe you know of a sympgeo book that does this

[thorn brook]

Like bruh just assume it's true and then it will be true smh🙄

[sharp mulch]

If you have coordinates, you might as well use them

[narrow rock]

nope

[neat lintel]

sadness

ok thanks

the wikipedia page states it but the only reference is lee's book which only proves it for forms

large sadness

[thorn brook]

:LargeSadcat:

[neat lintel]

i thought maybe you could prove it by lifting to R x M and getting a well defined time independent vector field but it didnt work out

oh well now that im rested my brain has probably come up with an answer

[narrow rock]

what do you need this for

[neat lintel]

fixing my fucked MSE answer

i can't delete it since they already accepted

so i might as well do the next best thing

mf really saw a long calculation and said "yeah looks right" and hit accept

[cold needle]

discussio 2

[last oxide]

why use frac when you can do $\partial_t$

[fathom swallow]

Fractal

[last oxide]

unless your derivative is explicit

[sleek wing]

$d_t$ for explicit

[fathom swallow]

Wew Lads Tbh

[last oxide]

ye

you could do either

[vagrant kestrel]

$d_{snuts}$

[last oxide]

it just saves so much time

[fathom swallow]

Plurmorant

[last oxide]

to use partial t when implicit and d t when explicit

also space

[vagrant kestrel]

I'm not 100% sure what the difference between d and partial is

[last oxide]

like

consider f(x(t),t)

now

you could think of this as a map

t \mapsto f(x(t),t)

and diff wrt to t

or (x(t),t) \mapsto f(x(t),t)

and get the partial derivative wrt t

[vagrant kestrel]

idk this will never not be cursed

[last oxide]

material derivative memes

[vagrant kestrel]

oh sorry there's another d

[sharp mulch]

That notation is bad

[hallow wasp]

like an inclusion mapping?

are inclusion mappings retractions?

like

X->A f(x)=x if x in A

[neat lintel]

[hallow wasp]

also if you have the map g:A->X in A->X->A , is g any particular map?

or is it any map from A to X

[narrow rock]

inclusions are not retractions in general

the first map in the composition A --> X --> A is the inclusion map

[hallow wasp]

oh ok yea

what i defined isnt an inclusion map

its a restriction or something

[narrow rock]

what you defined isnt a map from X --> A

you only defined it on A

oh

youre saying f is a map such that f(x) = x for all x in A

yeah that's right

the restriction of f: X --> A to A is the identity map

[neat lintel]

continuity moment

[hallow wasp]

yea sorry for not writing everything out

i need to improve on my laziness

thats phrased weirdly

i need to not be lazy*

[neat lintel]

now learn deformation retracts

and homotopy type

[thorn brook]

oh, retractions are quotient maps

[neat lintel]

prove it

[thorn brook]

I actually did it in the topology channel lmao

this is an exercise in Munkres

I did it a long time ago tho

[neat lintel]

on the spot go

[errant kiln]

like 2 weeks ago

[neat lintel]

[thorn brook]

okay okay chill

what was the definition again

[neat lintel]

[thorn brook]

Oh right, right inverse

So boom you have like p o f = e right

okay and which one is the retraction

okay doesn't matter. One of them is continuous so p(U) = f^-1(U) so if U is open then so is p(U)

and this is not the retraction, this is just a continius function with a right inverse

and retractions have a right inverse so it also is a quotient map

No

Oh okay, it is right. So p is by assumption continuous and also an open map so it is a quotient map

[neat lintel]

you're forgetting one thing

[thorn brook]

well it has a right inverse so it's surjective

[neat lintel]

yes

qed

[thorn brook]

another way of showing is to show that it maps open saturated sets to open sets

which follows from continuity of both functions

[neat lintel]

i don't even remember what saturated means so thank you for not using that language

i see

[thorn brook]

So like every set that it intersect, is a subset of that saturated set or something

[neat lintel]

my topology class avoided using saturated sets when talking about quotients

and they never came up again

oh no was ultra wrong

[errant kiln]

Ultra is never wrong

[neat lintel]

[thorn brook]

So this but it's with fibers instead

So the union of these will be a complete inverse image of a subset

[neat lintel]

[neat lintel]

i did this and i got the answer

up to a sign

cursed

and bad

ok i think

the formula is wrong

and that there really should be a minus sign

god

i hate math

[vagrant kestrel]

stop reading 1st edition textbooks

[sharp mulch]

Randomly switch signs everytime you do something

[neat lintel]

the guy finally un-accepted my answer

time to delete any trace of me being there

i can't tell if the sign error is a hamiltonian convention thing or an actual error

why is math so bad

[crystal stream]

quick question

why can wolframalpha sometimes integrate the weirdest shit but then fails to evaluate the integral of sqrt(a+rcos(x))

[snow berry]

,w int sqrt(a + bcos(x))

[fathom swallow]

Results provided by WolframAlpha

Click here to refine your query online
Upgrade to WolframAlpha Pro!

Requested by Kefir101Awesome#7665

[snow berry]

looks fine to me

,w int sqrt(a + rcos(x))

[fathom swallow]

Results provided by WolframAlpha

Click here to refine your query online
Upgrade to WolframAlpha Pro!

Requested by Kefir101Awesome#7665

[crystal stream]

it was a double integral

[snow berry]

?

[crystal stream]

like, r and x were integration variables

[snow berry]

ok well double integralls arent simple

i still have no clue why they exist

[crystal stream]

This integral popped up while calculating a volume

It doesn't look too hard but I was lazy in class and didn't want to spend time computing it while I could be doing something more productive

[snow berry]

u in multivar?

[sleek wing]

That’s a really annoying integral, it’s ugly in both Cartesian and polars

[crystal stream]

Ye.

Yeah it's not hard

just nasty

[snow berry]

nasty = hard tho

lots to go wrong

[snow berry]

theres no way thats by hand tho

[crystal stream]

factor out the cos(x) from the root

[river linden]

2 give you volume

if you have a surface

[crystal stream]

then it just has the form of x sqrt(a + x)

[sharp mulch]

You can ask questions about W|A in #computing-software

[snow berry]

ah

[crystal stream]

i'll be honest, it was more of a vent rather than a question

[cold needle]

doing a training module about privacy of students info so that i can be an exam proctor/grader in fall

🤔

clay tablets

[nimble shuttle]

submitting my resume in found footage form

[sharp mulch]

[leaden torrent]

my grad application was a classical haiku

in japanese, of course.

[cold needle]

Confidential haiku.

how interesting

what do you even say when ur in this situation

do u just say "i cannot tell you if this person is a student at UF"

or like

idk

lol

[sharp mulch]

Yes

"I am not at liberty to answer your questions"

[crystal stream]

"I can not tell you."

[nimble shuttle]

"I can not."

[neat lintel]

"I can."

[agile wedge]

"Hi"

[broken scaffold]

"I'm a girl btw"

[deep mango]

Privacy laws are such bullshit

[viscid pecan]

Woke

[deep mango]

"hey who's my roommate gonna be? can we get in touch before they move in?"
"uhhhh, sorry, that's against the privacy laws in the state of california :)"

Fucking stupid

[viscid pecan]

Dumb

[broken scaffold]

ULtrasovereign

[deep mango]

Being an RA and breaking all the meaningless privacy protocols... So satisfying

[cold needle]

uh

[broken scaffold]

ummm

[deep mango]

Just the meaningless ones

[broken scaffold]

ryc were you my RA

[deep mango]

Like "sorry, I know you'll find out your roommate's identity tomorrow but I can't let you email them today"

[agile wedge]

and obviously, everyone consider them being meaningless, especially the students involved, right ?

[deep mango]

Not "i'm going to tell your roommate you have this disability accomodation"

I was a good RA, you can say a lot about me but you can't say I was a bad RA

[agile wedge]

Ryc was a bad RA

See, I can

[broken scaffold]

I can't say they were a bad RA

[blazing pawn]

many such cases

also thanks ultraproduct for earlier with the poles stuff

I just read it

[toxic schooner]

[deep mango]

Here's a reasonable privacy regulation: if you ask me to tell someone to quiet down, then I shouldn't tell them who asked (unless you tell me to)

[broken scaffold]

resident yellow canary

[deep mango]

Or something similar

[broken scaffold]

you were still a mandatory reporter tho, right

[deep mango]

Yes

I did have to report any SVSH incidents

[broken scaffold]

so I can't have confided my plans to steal the Chicago Bean

[deep mango]

Not to the police but to the uni

[agile wedge]

yeah

[deep mango]

It's kind of interesting how we actually handle this, telling people before they reveal an SVSH incident that we are mandatory reporters and cannot be confidential sources

[broken scaffold]

SVSH?

[deep mango]

Sexual violence, sexual harassment

[broken scaffold]

oh that's actually a smaller scope than where I'm from

[deep mango]

Oh, yeah

I guess it can also be for other types of crimes?

SVSH definitely the focus though because often survivors dont want things to be reported

Lol

[rancid meadow]

i like the arch better

[broken scaffold]

the bean is more stealable

[deep mango]

It's fine lmao

It's like, a legal acronym or something

Casually I guess you just say sexual abuse as a catch all term

[broken scaffold]

Ultra it's okay because we were very aware of the context you were perceiving when you made those comments

it was certainly more lighthearted

[deep mango]

Anyway it's crazy to manage a situation where someone confides that in you. In RA training we used to act out scenarios, and the older RAs would be the residents for the new RAs. Well of course when I was an older RA my acting role randomly happened to be the victim of a sexual assault. That was pretty wild

It was mostly fine until the very last session of it where I made one of the two new RAs attending to the situation cry

That felt pretty bad

[rancid meadow]

[broken scaffold]

[rancid meadow]

being an ra does not seem worth it

its like being the person that gives water to drunk people at a party, but for the entire year

[deep mango]

Don't get me wrong, it's gratifying and very important to give these people a semi-accurate experience before they actually get in the ring and I apparently did really really well

[deep mango]

The party bust acting sessions were always so dumb

Like come on

[rancid meadow]

lmao ryc literally a cop

[deep mango]

Honestly I busted like 3 parties and only because they were REALLY disruptive

[rancid meadow]

yeah sounds like something a cop would say

[deep mango]

And it was the most frustrating annoying shit, college students are pieces of garbage when you try to tell them to shut up and go to bed

It helps when you get really angry about it after acting chill for a while (which is how it goes naturally for me)

[broken scaffold]

this seems like a pretty legit way to get the message across when most needed

[narrow rock]

RAyc

[narrow rock]

did not see it

I apologize.

I must give you my greatest apology. I never meant it to go this far. When I started these shenanigans, I imagined nothing of such a serious matter. I didn't mean to harm your dignity, respect, or honor. But, now that's it's gone this far, I can only do one thing; apologize. So, from the bottom of my intellect, family, pride, and dogs, I give you my strongest and hardiest apology. I hope you could forgive me one day.

[deep mango]

bro this website is fucking dope: https://www.perfectapology.com/apology-board-88.html

it's so juicy

[pliant yew]

My favourite topic is number theory. I find it thought provoking and fun.

[deep mango]

holy shit there are all these dumbass "oh i'm sorry i cheated on you :(" apologies and then there's this chad post:
"Hi Susie, I apologise for putting you in a very tight corner yesterday about payment to SACSC. I understand that I have infringed on your decision making process and I think it was selfish of me to expect you to accommodate my marketing needs. Next time, I will manage my team better and ensure that I communicate any urgent payments required timeously. This is the most expensive gift I could sacrifice from my inventory and I hope that you can accept this as my token of apology. Please forgive me."

I am sorry that I was rude. I did not do things at the right time, I wasted all of my time doing nothing. I disappointed the person who trusted me or at least did not expect such actions from me. I am truly sorry for that. I admit I have tried multiple times to get away from it but I failed. I tend to leave things when I find it difficult or broken. I do not even try to fix things and give up easily. I have done things in my past that I regret till this day and always try to forget them. I want to forget everything and start from the beginning and do everything perfectly instead. I am sorry for all bad thoughts I had in my mind. I am sorry for everything. I will change from today and Sunday will be a new start for my life.

the ballad of multiple helpers pings

[pliant yew]

What is this about?

[vagrant kestrel]

these are sad copypastas

[leaden torrent]

I'm so sorry my daughter. Children are victims of our selfish desires and I'm so sorry for putting you in this position.
this sounds so bad without context

im gonna pretend the writer just, like, bought smokes instead of buying their daughter an ice cream cone

[vagrant kestrel]

To the person whom I did not stop for at the Oviedo Home Depot this morning, you are right. I was in the wrong. I wanted to stop and apologize, but alone in the dark is much too risky. Have a good day.

[pliant yew]

Send the cat emoji and all will be forgiven.

[deep mango]

a lot of these are just legit awful

not even outside of context

so bad

what a great website

[rancid meadow]

ryc do you watch big brother

you seem like the type

[devout nacelle]

[deep mango]

hey jesse

you know what?

as a matter of fact, i do.

[rancid meadow]

predictable

[deep mango]

[rancid meadow]

classic pronouns in bio tbh

[deep mango]

you haven't heard the tea? king taran is AWOL on twitter for a few days now... is he in sequester to enter the BB house this summer??? 👀

[rancid meadow]

who

what

the only season of BB i watched live was the one with ariana grandes brother

[deep mango]

literally one of the worst ones

whatever

[rancid meadow]

and then i never watched another piece of BB content again

[deep mango]

wow, the season with one competent player and 15 doofuses

[rancid meadow]

player

[deep mango]

at least you got to appreciate devin

[rancid meadow]

implying its an actual game

[deep mango]

[rancid meadow]

ryc, esports are not sports and big brother is not a game pls face the facts

[deep mango]

oh also cody (the dude in second place in that season) is arguably one of the greatest players of all time. so i guess 2 competent players.

[rancid meadow]

greatest players of all time.
why

[deep mango]

he won the last season, which was all returnees (most of very high strategic caliber)

and it was a fucking blowout

the dude just steamrolled all strategy.

[rancid meadow]

what strategy

what r u tlaking about ryc

[deep mango]

it was such good gameplay it made the season almost unwatchably boring

[rancid meadow]

i thought the whole thing was just like horny 20 somethings causing drama and playing stupid games

[deep mango]

it was just like what derrick did on bb16 that you watched

but against the other really good players, not against horny 20 somethings

[rancid meadow]

how do u strategize

[deep mango]

yes, bb16 would make you think that

[rancid meadow]

what does that even mean in big brother

[deep mango]

every week someone is voted out. how do you make sure that's not you?

voted out by the other people in the game

[rancid meadow]

[deep mango]

the answer usually amounts to building alliances with people

but it gets really complicated from there, because the best way to be insulated is to have several alliances, and yet any alliance you're in will want to know you'll protect them over other players. so it's a game of deception, manipulation, small scale social structures, and information flow.

[rancid meadow]

but everyone seemed so dim-witted

i thought the whole schtick was that theyre all dumb

wtf

[deep mango]

well yeah, usually they cast like 10 idiots and 6 people of passable intelligence, and maybe 3 of the 6 are smart?

it's really terrible from a casting perspective

but you don't need too many super smart players for them to mobilize the idiots against each other

so last season they brought back a bunch of popular and very well-performing returnees, and the strategy was really deep and complex (so much so that it was pretty much impossible for anyone to break through all the structures that developed in the first few weeks, which made it boring and predictable sadly)

there are other seasons where almost every player is pretty smart, and they can be really fun to watch unfold

[rancid meadow]

do you have a subscription to the live cameras

[deep mango]

no

i do follow updates on them though

through twitter

[rancid meadow]

i think i got a free one when i was watching ariana grande brother

[deep mango]

just like, "this important stuff happened today, here's the strategy recap"

[rancid meadow]

send twitter

i will follow

this is intriguing

[deep mango]

i don't even watch the show tbh

i mean i do sometimes

but

it's a spectator sport for me

here is a live feed direct quotes twitter which is great but gets to be a little much: https://twitter.com/BB_Updates
here is a guy who posts about the feeds and does a daily podcast summary: https://twitter.com/ArmstrongTaran
here is a nice reddit account that posts daily live feed summaries: https://www.reddit.com/user/Bigbrotherrocks/

[vast surge]

I need help with a non-math-related-thing and don't know where to ask for help

How do I contact either steam technical support or google technical support? I've spent the past 2 hours searching on the internet for any way and can't find anything

I know for a fact that these two accounts of mine have been compromised and I'm panicking

[torn willow]

Weird

[vast surge]

The best number I can find for steam is [phone] which is just a thing that yells at me to go to their utterly useless help page, and I can't find an email address

I can find literally nothing for google

[devout nacelle]

Google shouldn't be tough to reach out to. Did you have 2FA enabled in any form?

[torn willow]

Yea,The steam support seems useless

[vast surge]

I can't figure out how to. What phone number do I call to get ahold of their tech support?

I didn't have 2FA enabled, but the password is a long alphanumeric string that I don't use for anything else that I change semi-regularly.

[vast surge]

I can get into my gmail, but not my steam, but however steam was compromised they'd need my gmail.

[torn willow]

They just don't cover how to recover your account

[vast surge]

Every single fucking thing just redirects back to their help homepage

[torn willow]

Paypal support is equally bad

[devout nacelle]

I'm not sure about the exact mechanism, but the last time I tried, they had a request-call mechanism where they'd call you themself upon complaint.

[vast surge]

I managed to lock my steam account.

[torn willow]

Does reset password not work

[vast surge]

Reset password asks for an email that's not my email.

[devout nacelle]

[vast surge]

Then it asks for the credit card with the most recent purchase, which isn't my card (likely also whoever got my account)

[vast surge]

Knowing my luck they'll only call when I'm not available.

[devout nacelle]

This seems to be a more Steam specific issue

Like, someone got the right credentials for your Steam account, then manipulated default email ID and other stuff attached to it

Try hitting up Steam with all these details

Email for now

[vast surge]

How? I can't figure out how to contact them.

[vast surge]

What's their email address?

[devout nacelle]

Did you have Steam Guard enabled?

[devout nacelle]

Can't find one, seriously what a trash company.

[vast surge]

No; I use a landline.

Steam Guard asks for phones for text messages

[devout nacelle]

Okay

https://support.steampowered.com/kb_article.php?ref=2347-qdfn-4366

This says that resetting password should need only your original email

That is, the one you had been using so far

[vast surge]

Well then it's wrong

[devout nacelle]

Hmmm, Steam seems to be a jerk about providing meaningful support

[torn willow]

I don't think there is a big company which provides good tech support

[devout nacelle]

[e-mail]

@vast surge

[vast surge]

Thank you so much

[devout nacelle]

I'm not sure if this is the one they respond to

[vast surge]

It's something

[devout nacelle]

If all else fails, tag them on Twitter with your issue.

[vast surge]

I don't use twitter

Social media and mobile phones were a toxic influence in my life; I cut them out years ago and haven't looked back (hence my earlier landline comment)

Still, I now have a concrete email address, and for that I can't thank you enough

[devout nacelle]

No worries. Let me know if this doesn't work, I'll try asking around for more details elsewhere.

[torn willow]

How did you get that mail

[devout nacelle]

Googled "steam support email" and this showed up.

[next swift]

If Anyone volunteers to be a teacher for anything in a server if you could friend me I would really appreciate it (:

[reef carbon]

a teacher for "anything"?

[hollow ginkgo]

😳

[thorn brook]

he's back here now wtf

[terse flax]

im a teacher in making croque monsieurs, interested?

[vast surge]

I love grilled cheese sandwiches. They're the best.

[terse flax]

with jambon in it

[azure kettle]

grilled cheeses are great

but too many people make melts

and call them grilled cheeses

that is not great

[cold needle]

idk about u

but i take a chees wheel

and put it on the grill directly

get lots of grill marks on it for aesthetic

and put in sandwhich

Clearly, this is a grilled chees

[azure kettle]

the only ingredients in a grilled cheese are

1. bread
2. cheese(s)
3. cooking fat (probably butter)

people who add more

and call it a grilled cheese

are dumb

and should feel dumb

[narrow rock]

metal adds just butter

[azure kettle]

https://old.reddit.com/r/grilledcheese/comments/2or1p3/you_people_make_me_sick/

this person is based and has the objectively correct take on grilled cheeses

[cold needle]

lmfao

i made a grilled cheese but replaced all the cheese with butter

i go to hell for this

[azure kettle]

that's just toast

[cold needle]

oh you missed the joke uh

you know what

dont worry about it

it's too disturbing to retell

[cold needle]

im good

if i keep telling this story ill be voted off the mod team for indecent exposure

of details

or even worse voted off the server

via ban

[azure kettle]

worth

[cold needle]

[hollow ginkgo]

Sounds like my brother.

[blazing pawn]

is this really a bad thing

sounds like a win win tbh

[cold needle]

this is a fair point

[narrow rock]

butter sandwich

[astral marsh]

https://tenor.com/view/cat-i-found-you-playing-kitten-gif-8059918

[pure sun]

[limber thunder]

murder attempt

[limpid venture]

that is how mniip became the catking

[cold needle]

someone donate me 10 dollars to buy games on steam

[sharp mulch]

[neat lintel]

no

[sharp mulch]

#chill thank you

[neat lintel]

i have officially given up

on this problem

i'm convinced it's just unsolvable

:catglad:

[cold needle]

oof

[neat lintel]

giving up never felt so good

[cold needle]

that's good

i think

[neat lintel]

i almost solved it in coordinates but i kept being off

with pure brutal force it's possible but extremely painful

[sleek wing]

Was getting caught part of your plan?

[rancid mirage]

bro why are two negatives a positive but two positives aren't a negative

[terse flax]

lol

dont know

big brain

QED

[vagrant kestrel]

the only way to understand -1*-1=1 is to use complex numbers

[terse flax]

i*i=-1

two positive equals to negative

:0

[devout nacelle]

I don't think there's a generally meaningful way of calling complex numbers as positive or negative

For starters there's no "natural" ordering on complex numbers. Is i>1? i<1? i=1?

In the absence of a natural order, how would we define positive or negative? In integers/rationals/reals, we generally call numbers <0 as negative and >0 as positive. In the absence of a natural order, it becomes unnatural to do the same for complex numbers.

[surreal sapphire]

in an ordered field nonzero squares must be positive

[devout nacelle]

[vast surge]

I just want to say, thanks again for the help with steam. I managed to get my account back.

[devout nacelle]

Nice!!!

Did they respond to your email, or did you just gain access somehow?

[vast surge]

They responded to the email

[devout nacelle]

Neat. I still hate them for not having this mechanism explicit.

But it turned out just fine in the end.

[vast surge]

(Sort of - they sent an email with the link to the sort of thing that looks like a steam discussion board or whatever that was the person directly writing to me)

[devout nacelle]

Did they tell you how you lost access?

[devout nacelle]

Ahhh

[vast surge]

No.

[devout nacelle]

I see

[vast surge]

I imagine it was a hacker who managed to guess my old password, nGI9o7p3R7wE, so I made my new password longer and more secure.

[devout nacelle]

It's not guesswork, it's either spywares or some sort of brute force

Do add special character(s) to your new password

[vast surge]

Don't worry, I did.

[devout nacelle]

[vast surge]

I actually think it might have been on steam's end; I changed the associated email address from an old email to the one I use nowadays like two weeks before my account was compromised and maybe there's a security leak in that process.

[devout nacelle]

[modest rune]

pretty sure the like

[vast surge]

My computer's clean; I spent literally a day afterwards scanning for spyware, keyloggers, anything really.

[modest rune]

modern advice for passwords

is that all the special character numbers capital and lower case stuff

doesnt make a ton of sense

[ancient flame]

what if the number is below the real axis? wouldn't that be negative?

[modest rune]

you just want to add pure entropy

but also make it easy to remember

[devout nacelle]

I use catchy phrases which are random

[vast surge]

I think you're thinking of that xkcd with the horse staple, right?

[modest rune]

i mean

its not just an xkcd bit

but yes lol thats the idea

[devout nacelle]

And my typical passwords tend to exceed 25 characters

[vast surge]

The English dictionary is too short for me.

[modest rune]

my passwords are all bad

and easy to guess

[ancient flame]

just use math formulas for passwords duh

[devout nacelle]

[modest rune]

except for like

2 of them

[devout nacelle]

Not a bad idea gmod

[vast surge]

I imagine 20 random characters is more secure than 20 letters all making a word

[ancient flame]

I did that for one of mine

[vast surge]

Just write a program to brute-force words and combinations of words and slight misspellings.

[ancient flame]

easy to remember, uses many special characters, looks random

[modest rune]

sure

[devout nacelle]

I rely on phrases with special characters and numerals appearing naturally

[modest rune]

i usually do lines from poems i like lol

[ancient flame]

lol

[devout nacelle]

Good strat

[vast surge]

I don't know how secure a password "TygerTygerBurningBright" would be.

[devout nacelle]

[limpid venture]

Mentalist moment

(I've heard that poem in mentalist)

[broken scaffold]

are they even niche poems wtf

[cinder zephyr]

I just use a password manager

[vast surge]

It was one of the ones I had to learn for school. It's Blake's most well-known poem among schoolchildren forced to study Blake, so I've been told.

[neat lintel]

Is it necessary for a paper to be published in journals to get recognition?

[nimble shuttle]

nah you can publish in viXra and you will get the fields medal

[rancid mirage]

doesn't being peer reviewed also not automatically mean it's correct

probably more applicable to like cosmology

[vague lion]

hmm

youtube's changing unlisted videos uploaded before 2017 to private

it's opt-out

so that's... essentially a deletion of a lot of really good old videos

because a lot of channels' owners are inactive or deceased, so they won't have a chance to stop it

https://www.youtube.com/watch?v=l6UHS1-vDMM

that's a lot of dislikes

[vagrant kestrel]

they're doing the same with google drive

[vague lion]

they're just taking a grater to internet history, huh?

[bronze pelican]

interesting

whats the difference between unlisted and private?

[vague lion]

unlisted won't show up on search, but people can still get to it and watch it if they have the link

no one can watch a private video other than the owner

[bronze pelican]

If it was unlisted

wait

so public videos uploaded before 2017 wont be affected right?

[vague lion]

no

i mean that would be straight apocalypse

but this is still quite bad

[rancid meadow]

the big issue is that there are a ton of public playlists that have really good unlisted videos

thats how a lot of unlisted videos are found iirc

[vague lion]

yes

[rancid meadow]

but also a bunch of links on other parts of the internet to unlisted videos will now be dead

what a weird decision

[vague lion]

this is gonna kill a lot of old vods, also

i know ppl often don't list vods

[bronze pelican]

vods of youtube livestreams?

[vague lion]

yeah

or livestreams generally

[honest drum]

https://www.deccanchronicle.com/nation/in-other-news/280621/hyderabad-math-wizard-solves-reimann-hypothesis.html

does this have any substance to it?

[vagrant kestrel]

Deccan Chronicle brings you news and views from around the world -- accurate and immediate.

[nimble shuttle]

lol

[neat lintel]

it's probably not legit

[last harbor]

He didn't use just the number theories

[nimble shuttle]

"An expert committee of scientists including Dr T. Ramasami, former secretary, Union ministry of science and technology, Prof. P. Narasimha Reddy, executive director, Sreenidhi Institute of Science and Technology, Prof. M. Seetharaman, former professor and Chair, department of theoretical physics, University of Madras, Prof. V. Srinivasan, former professor and dean, School of Physics, UoH, Prof. K. Srinivasa Rao, former senior professor, Institute of Mathematical Sciences, Chennai, Prof. M. D. Srinivas, senior Fellow, Centre for Policy Studies, Prof. Vinayak Eswaran, department of mechanical and aerospace engineering, IIT Hyderabad, and Dr Adindla Suma, associate professor, department of computer science, Sreenidhi Institute of Science and Technology conducted an open review of the proof for a year from February 2020 to conclude that Dr Eswaran had indeed proved the Riemann Hypothesis."

notice the lack of a uh

a mathematician

[honest drum]

Regional media is all over it at the moment so I wanted to know

[brave hollow]

the number of "former"s in that sentence ,

[honest drum]

many retirees ig

[nimble shuttle]

yeah former is not necessarily an issue imo

it's mostly that there are no mathematicians on the board

[brave hollow]

it was a joke :/

[nimble shuttle]

:/

[vivid halo]

lol

[pale orchid]

it was a joke

[honest drum]

another article said they sent invites to Mathematicians all over the world and they had an open review over the past year which led to the conclusion that the thing is legit

[pale orchid]

or i guess you could say

it's a former joke

[honest drum]

sigh

ok this one at least says ‘claims’ and doesn’t say ‘Math wizard’ etc

[devout nacelle]

Much more reasonable

Reddit says this is still under review by some journal?

[honest drum]

I can’t find any reddit posts about this thing

[devout nacelle]

https://www.reddit.com/r/math/comments/9zfiz1/has_anyone_checked_out_the_riemann_hypothesis/

[nimble shuttle]

lol

[devout nacelle]

Curious why this resurfaced suddenly

[vivid halo]

lmfao

[nimble shuttle]

assumedly he submitted it to a reputable journal

and since it hasn't accepted it by now it's probably flawed

[vivid halo]

resetting the "days since RH has been """proved"""" counter

[devout nacelle]

The 2019 response said it was submitted, did it take 2 years to get this thing peer-reviewed? I also can't find any verdict

[vivid halo]

the verdict is no, RH is still open

lol

[nimble shuttle]

if it held any kind of water on a cursory glance it probably would have had press coverage

it seems that chill and discussion 2 are having parallel discussions lol

[vivid halo]

ugh

[devout nacelle]

The fact that he posted this on Researchgate destroys his credibility without peer review

[neat lintel]

[vast surge]

Do we know if the guy's institution is legit? The article said he worked for the Sreenidhi Institute of Science and Technology.

I haven't heard of it, and it looks like it only opened in the late 1990s.

[devout nacelle]

Lol he just sounds salty

[devout nacelle]

This is the first time I've heard of this institute. Least I can say is that lots of institutes here, especially private ones, are infamous for garbage research output.

[neat lintel]

guys i proved rh

[devout nacelle]

[neat lintel]

@everyone come read my RH proof

[torn willow]

I wouldn't trust any institute that isn't an IISER,IISC,ISI or CMI wrt math research

[devout nacelle]

IIT tops

Since they came out with AKS

[vast surge]

What are those acronyms?

[forest jackal]

all proofs of RH by people on this server should be sent to dami's DMs for peer review.

[devout nacelle]

[devout nacelle]

Ultrahyped institutions in India, unknown to the world.

[vast surge]

The Riemann Hypothesis follows trivially from the basic axioms and definitions of mathematics. Q.E.D.

[torn willow]

Well Ecole knows CMI

[vast surge]

Oh okay.

[devout nacelle]

Moldi said nobody from ENS ever visits CMI as a part of exchange program, it's only CMI students who visit ENS.

[honest drum]

thank you

[honest drum]

Is CMI good?

[torn willow]

Ask moldi

[devout nacelle]

For maths, it's probably the best you can get here.

[torn willow]

It's good relative to everything else here

[honest drum]

hi-the(pronounced as the not the)-raa-baahd(like bard but with a silent r)

[ember finch]

Are you in cmi?

[torn willow]

No

[ember finch]

Are you in hs?

[torn willow]

No

[ember finch]

I see, I thought i might have found another cmi person on this server besides moldi

[devout nacelle]

There's det

[ember finch]

Oh yeah, he’s there too

[toxic schooner]

u might find one more here, but wait till next year to find out

[neat lintel]

I am giving CMI entrance this year

[toxic schooner]

good luck!

[bold ferry]

Mathematical institute pog

[limpid venture]

Good luck

[bold ferry]

a quick question:
a space which is locally euclidean to Rn isnt necessarily locally homeomorphic to Rn right

to have an open set U containing x which is homeomorphic to an open ball in Rn for each point x in X

locally homeomorphic says U is homeomorphic to f(U)

no

[azure kettle]

unit circle would be locally homeomorphic to R at every point but is definitely not homeomorphic to R

[bold ferry]

so i was wondering if there are situations when f(U) is not homeomorphic to an open ball

[azure kettle]

I think that works as a counterexample, no?

[bold ferry]

no

ye right slim

[last patio]

anyone remember that maths problem that's unsolved and recently (past few years) had like a 200+ page proof submitted for it that was still being vetted?

[bold ferry]

abc conjecture?

[last patio]

i think thats the one

ah yup, ty

[fringe needle]

this one's not too great so id be glad to hear feedback on approaching more topological stuff nicely for future videos https://youtu.be/zI3T2r5EZbg

[distant vortex]

Another narwhal video!

I will watch

[bronze pelican]

bro

If this discord server has a channel for advertising our math youtube videos, that would be great.

[distant vortex]

@bronze pelican do you have one? 🙃

[bronze pelican]

yes

[distant vortex]

Oh you do

I have seen it

I just forgot

What was it?

[bronze pelican]

PT Yamin

[distant vortex]

Ah, obviously

[sharp mulch]

[bronze pelican]

So how many math youtubers are there here: Little Narwhal, Me, Zetamath

[distant vortex]

What is zeta's channel?

[bronze pelican]

zetamath

[distant vortex]

SIGH

@fringe needle hmmm

9:15

You say (x-y)(y-z) <= |x-y| |y-z| because of schwarz inequality? Presumably you mean cauchy-schwarz, but this is just by defn of abs value, not cs

[devout nacelle]

mniip has a YouTube channel too

[distant vortex]

Is it mniip?

[devout nacelle]

You're the mniip alt, you should know

[sharp mulch]

@bronze pelican if there was a channel where you could post your videos, would you want to post them there?

[bronze pelican]

yes

[bronze pelican]

What's Mniip's channel name

[sharp mulch]

@fringe needle if there was a channel where you could post your videos, would you want to post them there?

[distant vortex]

redacted joke because i am kidding, but i realize i should stop making mean jokes 😂

[devout nacelle]

mniip

[distant vortex]

Knew it

[bronze pelican]

Found it

https://www.youtube.com/channel/UCfy8R8QR_G18TgrsaaL294g

[light needle]

time to become math youtuber

[bronze pelican]

Cateboring memes

jkjk

wAIT HE even calls them memes

[devout nacelle]

[bronze pelican]

I'm already suscribed to him, i forgot

[neat lintel]

omf mniip mniip started his career as youtuber

[bold ferry]

arrow memes lol

[fringe needle]

keep in mind it's a dot product, and im simply saying that it is proven easily through cauchy schwarz

[fringe needle]

and yeah that would be great for anyone making math videos here

[fringe needle]

well i mean not proven, it comes by definition

please lemme know if im still saying something stupid

it's often i might mention a result in the videos that i dont really often use but know exists and can be used for my situation

[distant vortex]

Oh, lol, i did not notice it was a dot product

Idk why

Since otherwise it makes no sense

[fringe needle]

yeah

the whole slide is using the dot product lmao

maybe i shouldve made that clearer 🤔

[fringe needle]

i watched one of zeta's videos: it was very good

[distant vortex]

No, I was watching on 2x while marking lol, so i was like barely paying attention. I'm sure it was just me being dumbo.

[fringe needle]

i see

[blazing pawn]

many such cases

[viscid pecan]

That’s how I initially felt about Cauchy-Schwarz

[mortal oasis]

i hate matlab i hate matlab i hate matlab

[sharp mulch]

Common sentiment

[bold ferry]

agreed

[cold needle]

hello friends

i am taking an entomology babby course this back half of the summer

i think it will be a refreshing change of content

[devout nacelle]

I had to Google that

Sounds cool!

[shy pollen]

matlab is a steaming pile of shit

[devout nacelle]

Oh I tried using this during the day when I wasn't getting help in #proofs-and-logic I couldn't figure out how to use it

[neat lintel]

But mex functions are good

[quiet geode]

Is there anything equivalent to a handshake in math?

[rancid meadow]

what

probably a handshake

[sharp mulch]

Handshake is a networking thing that academics generally don't use

Math networking mostly happens at coneferences/workshops

[rancid meadow]

are you telling me that mathematicians dont shake hands

Ange...

[sharp mulch]

Certainly not on Zoom

[rancid meadow]

good insight

[cold needle]

i never shake my hands

i am Rock hard.

no shaking

no wiggling

[sharp mulch]

[cold needle]

what

oh

i forgot that the language is weird like that

[sharp mulch]

...

[cold needle]

what i never think of that when i say that

[sharp mulch]

You are horny on main

[cold needle]

uh oh

[quiet geode]

Uhh

[eager trout]

hm

[rancid meadow]

what do you mean by handshake

Ange is wrong anyways that is absurd

i refuse to believe this is true even though i have never been to a conference

like a secret handshake?

[sharp mulch]

I guess there's also like

Job hunting

I used it a few times because my university has it for free for us

[quiet geode]

I mean if theres an expression/equation/statement that radiates the same feeling that is captured during a handshake is all i want to know

[sharp mulch]

And all I did was get spammed by messages from some private school

...

No

[quiet geode]

F

[rancid meadow]

what does

what

do you know an equation for a hug?

[quiet geode]

Math aint pleasant enuff

[rancid meadow]

[astral marsh]

https://tenor.com/view/ap-malphite-dance-bomb-league-of-legends-lol-gif-16654888

[cold needle]

im gonna do it

im gonna become a math chad

catch me in a couple years

it's gonna be lit

[velvet dagger]

:)

[summer nest]

How

[cold needle]

many years of study and hard work

[summer nest]

okayy

[thorn brook]

[viscid pecan]

by just doing math

[summer nest]

@agile wedge why do you think online maths degree is absurd?

I always hear "In uni, no one spoon feeds you or teaches you much. You just learn by yourself and do the work". If that's the case, can't it be done at home too?

[last oxide]

in principle, yes
but that also means youre expected to have less demand over you
there is more chance of fraud and everything
esp at early years

[summer nest]

What about online learning and offline exams?

like 4 times a year?

[last oxide]

if the exams are good enough, sure
but then the problem becomes the quality of learning

in person classes are an essential thing imo

at least partially

actually makes me miss contact with teachers

[summer nest]

Not everyone can afford to get into good colleges though

[last oxide]

I mean
if you have the choice to, do so

[summer nest]

Don't have a choice though sadly

I wish I could study at home, attend exams and get a degree

[last oxide]

it depends on what you wanna do with a degree

in the worst case scenario, pick and choose subjects that you think are cool and use the internet to learn

[summer nest]

Yeah but just learning them won't get me into masters right?

Like, if you're getting into pure sciences, it's kinda necessary to have the qualification. Or else you're not going to be able to specialise or use much of it anywhere

[last oxide]

probably not

[summer nest]

Then the learning just due to sheer interest is left to people who have lots of free time and money I guess

[last oxide]

uhm
I dont think thats all true
sure, those will have an easier time learning, but anybody that has some spare time can learn

learning nowadays is free
even if it isnt as structured as a uni

[summer nest]

But applying what you've learnt isn't as easy as learning itself. Like I can't put time on maths if there's no opportunity for me to get into a good uni to learn it better. No matter how interested I'm in it.

Also, I might've had the same amount of free time before 2020 as compared to that year itself. But the time was inconsistent. Continuous free time just made a huge difference when learning maths

[last oxide]

to the first part, dont expect a uni would teach you how to apply things, either

[summer nest]

No it won't. It'll give a qualification which I can use to get a chance to apply

[light needle]

Eh you can skip classes if you self study well enough

given you know how to bargain with professors or w/e

[last oxide]

you probably wont skip undergrad, tho

[light needle]

well

[summer nest]

Like in india, BSc Hons and BSc is very different even if you're choosing maths

Hons is like what BSc maths is supposed to be

BSc no hons means you have to study maths, physics, chemistry. And you'll get some more subjects in maths because you chose that

[rigid harness]

hey, just jumping into trig. any recommendations for how I should go about learning it? I have khan academy, a textbook and that's about it for now. I'm thinking of working through the textbook problems, youtubing anythn I don't understand and then doing khan academy for the rest. anybody have some recommendations for subtopics to learn or other supplementary resources?

[summer nest]

That's a good way to learn

atleast in my opinion

Why not just with only khan academy?

Sal covers almost all of the topics

[rigid harness]

@summer nest textbook offers another point of view and more practice problems, which are always welcome. And its only like 300 pages and it doesn't seem too dense, so why not

I have honors geo my first year, so ideally get that done and then test out of trig and jump into precal sophomore year

[summer nest]

HS subjects in general aren't that deep to have a lot perspectives to study from

again, in my opinion

[cinder zephyr]

eh more practice problems never hurts

[neat lintel]

you can supplement it with Durell's 2 part series on trig

[agile wedge]

I don't, I was just making a joke

[summer nest]

BTW there are sim racers who seem to be actually competent real life racers

[wind gale]

Search up The World's Fastest Gamer

[summer nest]

Ok

[fringe needle]

https://www.youtube.com/watch?v=60z_hpEAtD8 Found this really interesting, but im not well versed enough in some of the fields he mentions to see if it's lowmath or not so would love to hear a second opinion

[leaden torrent]

its a formulation of multivar (more accuratly, an alternative to vector calc/elementary diff geo) thats popular among physicists

i think youd probably have better luck asking about it in a physics server than here

it is technically purely mathematical but most mathematics students know nothing about it

[fringe needle]

i see

well it was definitelly a very interesting watch nonetheless

[sleek wing]

Very fun watch

[toxic schooner]

Thanks a lot!

[willow pulsar]

someone online?

[turbid basalt]

nope

[bronze pelican]

Great video

[vague lion]

the existence of free real estate implies the existence of free complex estate. in this paper i will

[inner finch]

lol

[nimble shuttle]

welcome back mirza

[inner finch]

hello jon

how have u been

[errant rock]

le mirza has returned

[inner finch]

😌

le dead horse beater herself has arrived once again

[nimble shuttle]

been good, you?

[inner finch]

pretty good too

[nimble shuttle]

[bronze pelican]

@inner finch HI MIRZA

[inner finch]

hello susmin