The h Bar

Balarka Sen

4:00 PM

Exams are over now, so there's not much pressure. I'm overall ok with my school workload.

user228700

Oh, that's nice, seeing as you're now in 12th and all.

user228700

> I'm overall ok with my school workload

user228700

It would seem that your teachers are far too kind :-P

Balarka Sen

I know, I like my school

user228700

Wow. Good for you! :-P

Balarka Sen

4:02 PM

I do have too much math to learn though

user228700

I wish that 75% attendance wasn't mandatory here; there could be no bigger waste of my time than actually attending Calculus class. I needed to come back and do hours upon hours of work to understand wtf she was going on about.

user228700

@BalarkaSen You mean outside of class, don't you?

Balarka Sen

@Kaumudi.H Really? The calculus class is not good?

user228700

Nope. Khan Academy FTW.

Balarka Sen

Yeah I meant unofficial math

user228700

4:04 PM

@BalarkaSen Ah, isn't there too much Math to learn at any given point in time?

Balarka Sen

What's in your calc syllabus?

user228700

@BalarkaSen As of now, it's kids stuff, I guess; Convergence & Divergence of series and partial derivatives. I forget what we have when we get back after vacations.

Balarka Sen

I wouldn't say it's "kids stuff". They are the foundations, and are very important in life. :)

user228700

Hmm :-) In any case, my teacher is most rubbish at her job.

Balarka Sen

That sucks

user228700

4:09 PM

BTW, @Balarka: From having known what little I do about you, I can attest to the fact that you will not enjoy certain aspects of college, one of them being the social side of it all.

Balarka Sen

yeah i really have not much to communicate with the generic crowd

0ßelö7

@ACuriousMind so, still no idea what a socle is?

user228700

@BalarkaSen x'D That's an excellent way to put it!

Balarka Sen

i felt a little comfortable after seeing the CMI crowd in the workshop though

user228700

Oh, you did? That's good :-)

0ßelö7

4:11 PM

@ACuriousMind using Zorn that definition is equivalent to the largest semi simple submodule

user228700

God knows that I remain locked inside my room all day.

0ßelö7

@BalarkaSen if Indian colleges are like American ones there's 30 people you like and 30,000 who are completely boring

Balarka Sen

@Kaumudi.H yeah uh for nonstandard reasons

a proportion of the crowd are potheads

:p

user228700

Ah.

ACuriousMind

@0ßelö7 Ah, well. I think we usually dealt with stuff where everything was semi-simple (also, I said I know the first four chapters of that and the socles don't seem to play any important role until chapter 5 :P)

Balarka Sen

4:14 PM

@0ßelö7 I guess so

user228700

@0ßelö7 My college has 1,800 students. By your estimate, that would be...1.8 people I like :-P

0ßelö7

@ACuriousMind the exercises contain socles!

Balarka Sen

I think the generic American is like the generic Indian but wears stupid hats and eats more

0ßelö7

@BalarkaSen and poops in a toilet.

Balarka Sen

r o f l

user228700

4:15 PM

And there is a fair chance that said person/persons (depending on whether you choose to see the glass as half full or half empty) is a senior, in which case said persons are prohibited from making any sort of contact with me.

Balarka Sen

@Kaumudi.H Why don't you read books and watch movies

user228700

@BalarkaSen I, hmm, I have been doing neither because I have been attempting to catch up with what they teach in class.

0ßelö7

@Kaumudi.H what's the gender disparity?

Balarka Sen

you people are super workaholic

Blue, you and pretty much any indian guy i have seen here so far

user228700

@BalarkaSen And the worst part is that I don't even have a say in this matter!

0ßelö7

4:18 PM

@BalarkaSen people who are driven but not super genius have to study A LOT

user228700

Soon enough though, my sister will send me some books I have been meaning to read and perhaps then I will start making time for reading everyday.

user228700

@0ßelö7 Yeah, man, not everybody is a super genius, like you :-P (@Balarka)

Balarka Sen

@0ßelö7 I am not a super genius. I ended up knowing more math but I am actually bad at hands on computations

and i have never worked my ass off on anything

and i sucked at everything, yeah

0ßelö7

@BalarkaSen what did Ted say about being self deprecating

user228700

How did you simply end up knowing more Math? :-P

Balarka Sen

4:19 PM

Step1: Pick a book

Step2: Memorize terminologies

Step3: You are an expert in the field

0ßelö7

@Kaumudi.H oh thanks for clarifying you weren't complimenting me

user228700

@0ßelö7 :-P Sorry.

user228700

@Balarka: My sleeping schedule will appall you, I'm sure.

Balarka Sen

orly?

user228700

I might be annoying my roommate by going to bed this early :-P

user228700

4:22 PM

I go to bed at 10:30 PM and wake at 5:30 AM.

Balarka Sen

oh jesus so you're a normie

what a normie sleep schedule

user228700

See, told ya.

user228700

I had a wacky sleep schedule last year though, let's not forget! :-P

Balarka Sen

hey are you up for a social experiment

user228700

Sure(?)

Balarka Sen

4:25 PM

i read a comment on youtube somewhere about tying coldplay fans to a chair and playing Bowie's Berlin era songs or Scott Walker's experimental albums to them for torture and torment

user228700

Yeah, I saw that message -_-

user228700

What about it?

Balarka Sen

here is my experiment

oh i did ping it to you didn't i

0ßelö7

@Kaumudi.H you are

user228700

@BalarkaSen (Bear with me, my internet is too slow)

user228700

4:26 PM

@BalarkaSen You did, yep.

Balarka Sen

is this college internet or phone internet

John Rennie

@BalarkaSen his voice sounds a bit like Anthony and the Johnsons ...

user228700

@BalarkaSen The latter.

user228700

What college internet, lol (::internally screaming::).

Balarka Sen

Oh, they don't give internet in hostels? Frick

0ßelö7

4:28 PM

what is this hostle thing

is it an Indian word

Prathyush Poduval

@0ßelö7 Dormitory

0ßelö7

@PrathyushPoduval so why not say that

Prathyush Poduval

Well, different culture i guess

We're used to calling it hostels

Balarka Sen

@JohnRennie I don't think I know them. His works are a bit operatic

user228700

@0ßelö7 It's English, man, geez.

John Rennie

4:30 PM

ANOHNI - Drone Bomb Me

►

Balarka Sen

I have heard the adjective "baritone voice" applied to his works

user228700

@BalarkaSen Yeah, IKR?

0ßelö7

@BalarkaSen no internet = no memes

user228700

@BalarkaSen Ah, the title has loaded only now.

CooperCape

let's not talk about memes...

0ßelö7

4:31 PM

@CooperCape why

CooperCape

Little pictures with a comment on them? For me it explains itself.

0ßelö7

r/dankmemes r/prequelmemes r/surrealmemes r/memeeconomy

CooperCape

I mean at first

it was fine

now it's just weird.

0ßelö7

if you don't read these every day, what are you doing with your life

@CooperCape that's like calling music random sound waves

Balarka Sen

@Kaumudi.H Maybe you can get internet connectors? Like those pendrive like thingys

user228700

4:32 PM

@Balarka:

Balarka Sen

I'd do that if internet is bad

can't live w/o memes

user228700

Balarka Sen

haha, it's fine, i was mostly joking

user228700

There. I'll listen to it in the morning, when the speed is drastically better.

CooperCape

Most memes now have gone off from normal...

user228700

4:33 PM

It's one of the reasons I am waking up earlier, actually.

Balarka Sen

glad that you'll watch it. i don't think you'd like it particularly

user228700

@BalarkaSen :-P I'll let you know.

Balarka Sen

@JohnRennie I see what you mean now. Indeed the vocals are similar in texture

Walker's gets cracked as you progress through Tilt, Drift and Bish Bosch (the experimental trilogy)

consistent with the content, which goes horrendouser

John Rennie

@BalarkaSen Anthony and the Johnsons won the Mercury music prize with their first album. But then they split and the singer Anohni is now a solo performer.

0ßelö7

@CooperCape r/dankchristianmemes

CooperCape

4:36 PM

oooh goody

Balarka Sen

@JohnRennie Interesting.

user228700

@BalarkaSen It's only this terrible after 9 PM.

Balarka Sen

ah I see

0ßelö7

DAMN.

Prathyush Poduval

@Kaumudi.H No JiO there?

user228700

4:38 PM

I'm using Jio right now.

0ßelö7

JIO?

Prathyush Poduval

Well, thats bad then. I don't think you have hope then :P

user228700

The speed reduces a lot after 9 PM (presumably when everybody starts using it) is all.

John Rennie

@0ßelö7 Indian phone company that revolutionised mobile comms in India.

Prathyush Poduval

@0ßelö7 Indian Telecom Service, recently started providing high speed mobile internet for low prices,

user228700

4:39 PM

@PrathyushPoduval Indeed, lol.

John Rennie

@0ßelö7 who is the guy in the suit? An American politician? Or is that the preacher who refused to open his church?

user228700

Ah, 10:10. I should probably "get ready for bed", sigh.

Balarka Sen

@0ßelö7 have you seen the new big ben meme

it's the freshest thing in the dank meme world

John Rennie

@Kaumudi.H look on the bright side. Tomorrow you'll awake refreshed and ... it's a holiday! :-)

0ßelö7

@JohnRennie the preacher

Prathyush Poduval

4:41 PM

@BalarkaSen What are your sources for good memes?

0ßelö7

@BalarkaSen I have not

@BalarkaSen @ACuriousMind I have a finite-dimensional $k$-algebra $A$, where $k$ is a closed field. Now $S$ is a simple $A$-module. Is $S$ a finite-dimensional vec sp.?

John Rennie

@0ßelö7 I saw some headline about the story but know nothing more about it (and to be honest care less) so I'm not n a position to comment.

Balarka Sen

@PrathyushPoduval Well, "meme" in general is a very broad category. I am more in the side of dank memes, which are visually dazzling and musically motivated memes.

John Rennie

Doesn't dank mean dark and wet?

Balarka Sen

I like the various reddits, Anthony Fantano's shitposting channel, Dolan Darker and grandayy

Prathyush Poduval

4:43 PM

@JohnRennie Thats what I thought

Balarka Sen

@JohnRennie It's the pothead's word for good stuff, I think?

John Rennie

Dutch for thank

Balarka Sen

@0ßelö7 youtube.com/watch?v=tqYuhyr71ig

0ßelö7

@BalarkaSen later, need modules now

John Rennie

From the urban dictionary:

> Dank, is an adjective which is over-used by people in general and mostly by people trying to appear cool to their stoner friends.

And I thought some of my posts here were bitchy :-)

Balarka Sen

4:47 PM

urbandictionary is great in general

0ßelö7

@BalarkaSen I need some dank algebra bro

Sir Cumference

@Kaumudi.H Thanks :) How are your classes going?

Balarka Sen

@0ßelö7 I don't know any algebra unfortunately

0ßelö7

@BalarkaSen you really don't know the answer to my question?

Balarka Sen

What does a simple module mean?

0ßelö7

4:50 PM

@BalarkaSen has no nontrivial submodules

Anonymous

@JohnRennie

Anonymous

Hey! It's done :D

0ßelö7

jesus, clean up that desktop

Anonymous

It's smooth :)

John Rennie

4:53 PM

Hooray! It works :-)

Does it feel faster?

Anonymous

@JohnRennie Yeah. It does! :D Hoperfully it won't get filled with junk files again (anytime soon):P

Balarka Sen

@0ßelö7 Uh, so $k[x, y]/(x)$ is a simple $k[x, y]$-module isn't it?

0ßelö7

@BalarkaSen I don't know what that means

John Rennie

@Blue It's just possible I might have a 128GB SSD in my pile of bits if you're interested.

0ßelö7

what is $(x)$

John Rennie

4:55 PM

:-) oops

Balarka Sen

The ideal generated by $x$. $k[x, y]/(x)$ is literally isomorphic to $k[y]$

0ßelö7

@BalarkaSen Oh, sure.

Anonymous

@JohnRennie ummm...."pile of bits" ?

Balarka Sen

But $k[y]$ is not a finite dimensional $k$-vector space...

Anonymous

You mean you might have a spare one?

John Rennie

4:56 PM

I get old broken laptops from the place I work. I dismantle them and attempt to construct working laptops from all the bits.

Prathyush Poduval

Nice hobby

John Rennie

I have a feeling there is at least one spare 128GB SSD in the pile if you want it.

Prathyush Poduval

How many working laptops did you end up with?

0ßelö7

@BalarkaSen Uh, what if you multiply by $x$. Do you want to set $x=0$ after doing the formal manipulation?

John Rennie

But, I'm about to go away for a week so it will have to wait until I'm back.

Balarka Sen

4:58 PM

Right, yup @0ßelö7

0ßelö7

@BalarkaSen I said $A$ has to be a finite-dimensional $k$-algebra. What's $A$ here?

Anonymous

@JohnRennie I would be interested in having it, but I don't want to trouble you :) It's difficult sending stuff overseas

Balarka Sen

$A = k[x, y]$

0ßelö7

@BalarkaSen How is that finite-dimensional

John Rennie

@PrathyushPoduval sadly not very many. It's mostly the same things that break so it's hard to put together one complete working laptop. I end up having to source second hand parts from eBay.

Balarka Sen

4:59 PM

oh I guess I forgot what finite dimensional means

Anonymous

I think my laptop is more or less working fine now

Balarka Sen

just finite dimensional as a k-vector space i guess

0ßelö7

@BalarkaSen Yeah, presumably.

Balarka Sen

Ok, this is too hard for me

0ßelö7

@ACuriousMind !

John Rennie

5:00 PM

@Blue sending disks to India is fine if you lie about what's in the envelope :-) I've done that before and it worked. Postage to India is surpisingly low if it's a small envelope. About 250 rupees.

Balarka Sen

I chicken out

0ßelö7

@Blue I have a 500GB SSD

it's broken but should still work

John Rennie

Sadly Blue's Dell laptop doesn't have a connector for M.2 disks

Balarka Sen

@JohnRennie send me a god church

0ßelö7

@JohnRennie does it have a PCI slot?

Anonymous

5:01 PM

@JohnRennie Okay then..lol :P We can talk over mail if you wish :)

Balarka Sen

you live in the city of England don't you?

0ßelö7

am I the only h-barer who hasn't gotten free stuff from @JohnRennie

@JohnRennie and you never did say if you read what I sent you

John Rennie

@Blue When I get back on Monday week (11th Sep) I'll ping you here and we'll sort something out.

Anonymous

@JohnRennie Sure. Take your time. There's absolutely no hurry. :) BTW are you at your mom's currently?

John Rennie

@0ßelö7 the poster? Yes I've read it and I think it's great. But if you're targetting regular STEM students I'd say you've aimed miles over their head.

@Blue no, I leave on Sunday.

0ßelö7

5:04 PM

@JohnRennie It's too late to change anything but I'm not sure there's anything I can do to make it more approachable

I left out the technical details for Theorem 4

that one is the fun bit

John Rennie

I don't think you can explain GR to anyone who isn't willing to learn some maths.

SR maybe, but GR is a step too far.

0ßelö7

@JohnRennie exactly

John Rennie

@BalarkaSen a god church ???

0ßelö7

@JohnRennie it's a meme

John Rennie

The urban dictionary says:

> To be honest.... I dont fucking know. I think some stupid YouTube star named Logan or Jake Paul made a song with it in the lyrics?

I think that about sums it up :-)

0ßelö7

5:08 PM

yup

it was Jake

@JohnRennie I suggest you watch the video

it has shaped youngsters such as @BalarkaSen and myself and is an integral component of the zeitgeist

Balarka Sen

tru

it's everyday bro is an integral part of the postmodern life now

0ßelö7

In 30 years when are running the world we will remember the city of England

@BalarkaSen the title says it all: its everyday

Balarka Sen

Don't forget the "bro" though. By writing "bro" after "it's everyday", he's showing his brotherly affection towards his fan group, namely, the Jake Paulers, hence is an important part of the title.

0ßelö7

For better or worse, JP is the modern day Elvis

Balarka Sen

Hm, I wonder if there are jake paul verbose memes

yup

0ßelö7

5:23 PM

Lmao

Balarka Sen

there is also one where JP's face gets increasingly distorted but on each panel he says "It's everyday bro"\

CooperCape

Guys for a project I want to write a computer program that takes an input mass (and other parameters) and outputs the curvature of space-time using the Schwarzchild metric. Does this sound like a plausible suggestion to achieve? (Timing isn't an issue)

Anonymous

@CooperCape Sounds like a plug-values-into-formula type program...

CooperCape

Yeah true...

Anonymous

So, what's the problem?

CooperCape

5:30 PM

I just want to make sure that I'm not putting my efforts into something that sounds idiotic/to someone with higher knowledge than me inachievable

That's why I was using the Schwarzchild metric as a starting point really...

Slereah

@CooperCape That's pretty trivial

It's literally a division

CooperCape

It's for no one's purpose other than mine.

just as an interesting thing to do.

Slereah

Here's the program : return 12 * 4 * G * G * m * m * pow(c, 4) / pow(r, 6);

ur welcome

CooperCape

welp that was easy

what's next...

0ßelö7

5:45 PM

That's the kretschmann

Not the whole tensor

CooperCape

Yeah I do need to apply that to curvature...

DanielSank

5:57 PM

Cross-post in case someone here knows about coaxial cables:

0

Q: What tool is used to cut back the outer jacket and dielectric of a coaxial cable?

I would like to assemble an SMA connector on an 0.086" semirigid coaxial cable. Here is an image of the assembly instructions on one such part (Amphenol 901-9723). As you can see, the outer jacket of the cable and dielectric must be cut back by dimenion a. What tool is suitable for cutting/sco...

ııııııııııııııııııııııı

@EmilioPisanty Yes it is gapped (at least for some $a_0/R$s) in the bulk. Their goal is to find $a_0/R$ so that the gap is closed by the one-way edge modes

@DanielSank A cable stripper

if you dont have one just burn the cable (dielectric) and cut the remaining outer copper wires using a knife :)

CooperCape

I'm soooooo bad at using cable strippers...

ııııııııııııııııııııııı

@DanielSank and even if you don't have a knife and fire and it's really important, just cut it using your teeth

[assuming you do have strong healthy incisors (front teeth)]

ııııııııııııııııııııııı

6:23 PM

"I'm willing to spend up to around $1,000 on a tool set."

at $1k, I suggest hiring someone with a cable stripper to do it for you

Hippalectryon

Hi! I had a quick question, not sure whether I should post it on main, since it's maybe a trivial problem but google doesn't help me much :(
How does flaming glass affect its surface tension ? The (very short) wiki article simply states that it does, but not really in what way.

David Z

7:55 PM

@Hippalectryon I guess it would be better if you could make it a bit more specific, but that potentially could be posted on the main site. After all, if Google and the standard references (e.g. Wikipedia) don't bring up the answer, how trivial of a question can it be?

Hippalectryon

@DavidZ I just fear that "flaming glass" might not be the canonical name, which would explain the lack of results on google

0ßelö7

8:08 PM

@BalarkaSen what the hell is geometric group theory and how do I learn it

nasil

Can anyone recommend a resource to have a solid, advanced knowledge in Python?

David Z

@Hippalectryon Ah, well if you explain what it is, maybe someone can dig up the correct term. That part you might want to try here in the chat room first before you post on the main site - but it is, in principle, fine to ask "if I do <this thing> to glass, does it affect the surface tension?" without knowing the name for the thing.

@nasil I'd say a solid, advanced knowledge only comes from a lot of coding experience. A tutorial, book, or course can help you get started, but I really recommend having a project to work on that you can use to gain experience.

nasil

i was thinking making a grapher

both 2 d and 3

also a nazi enigma machine

d

i would like to get started by a book and lectures and so on

a lecture and a book which both support each other would be great

also keyloggers, physics simulators

can be nice for projects

Qmechanic

Just looked at the Phys.SE site stats. The Aug. 21, 2017 solar eclipse last week not surprisingly sparked a 50% increase in daily visits. Moreover, the fall semester is about to start.

Hippalectryon

8:44 PM

@DavidZ alright, thanks!

nasil

@DavidZ so do you have any advices on books?

David Z

Not particularly. I never used a book to learn Python, and most of the programming books I've used to learn other languages are not terribly useful.

There are probably good ones out there though. Maybe check on the python tag on Stack Overflow to see if they have any good suggestions. The official Python documentation also includes a tutorial which works for some people.

nasil

@DavidZ So how did you learn python

David Z

I started with it by taking a computational science class in college which used Python, but I didn't really learn it until I undertook a major project in the language

Basically programming a website CMS (before I knew that CMS's were a thing)

nasil

9:07 PM

0

Q: Gravity and resitamce

I don't really understand gravity and don't really believe in it to be honest. But people a lot smarter than me do so I can love with that. My questions if someone could be so kind to answer ... 1.Why doesn't gravity effect helium in a balloon 2.how can NASA have zero gravity rooms. 3.does a po...

gravity

CooperCape

11:08 PM

If I'm writing about the Calabi conjecture in a kind of formal document is it better to write it as "Eugenio Calabi's conjecture" or just as "Calabi's conjecture". They'll know exactly who it is either way...

ACuriousMind

@CooperCape I would consider it very unusual to mention the first name unless there is another guy working in the same field with the same surname.

CooperCape

Okay thanks :)

I thought it was a bit weird

'cause I just left Riemann as 'Riemann' not Georg etc...

0ßelö7

@CooperCape good because his name is Bernhard

ACuriousMind

Bernardo Riemann

0ßelö7

@ACuriousMind manifolds do look like potatoes