The h Bar

Balarka Sen

17:00

I think the point is an important class of Hilbert spaces are space of functions

So, yeah, historical reasons like ACM said

John Rennie

@BalarkaSen Duck tape??

paracresol

Takes deep breath

user228700

@JohnRennie Bet that aroused your curiosity, didn't it? (:-P)

paracresol

@JohnRennie I hear it's also called that...

John Rennie

Presumably it's for immobilising aggressive ducks

Secret

17:01

> Duct tape,[1] sometimes called duck tape, is cloth- or scrim-backed pressure-sensitive tape, often coated with polyethylene. There are a variety of constructions using different backings and adhesives. One variation is black gaffer tape, which is designed to be non-reflective and cleanly removed, unlike standard duct tape. Another variation is heat-resistant foil (not cloth) duct tape useful for sealing heating and cooling ducts, produced because standard duct tape fails quickly when used on heating ducts. Duct tape is generally silvery gray, but also available in other colors and even pr…

it does called DUCK TAPE

user228700

Nice. The new thing I learned from this place today is that duck tape is the same thing as duct tape.

Balarka Sen

@JohnRennie yes, duck

paracresol

Speaking of immobilisation...

ACuriousMind

@JohnRennie "The first material called "duck tape" was long strips of plain cotton duck cloth used in making shoes stronger, for decoration on clothing, and for wrapping steel cables or electrical conductors to protect them from corrosion or wear"

paracresol

Immobilises @Kau, drags @Kau to The Periodic Table

Balarka Sen

17:02

i told you i wished i could speak english

user228700

@paracresol Pe! I'm staying.

0celouvsky

The k is silent

John Rennie

Well, well, the things you learn in the Physics chat.

user228700

@JohnRennie Ikr?! What's for lunch, BTW?

David Z

BTW that will do it for our official chat session today (though feel free to hang around). See everyone in two weeks!

Well, maybe - I'm not sure if I can make it to the next one

John Rennie

17:04

Disappointingly it apparently derives from the Dutch word for linen and is unrelated to its use in securing ducks.

Balarka Sen

This was a chat session?

4

user228700

^

ACuriousMind

@0celouvsky That depends on what you have given - it's a bit weird to show it is "closed under substraction" unless what you have is a subset of a group

David Z

@BalarkaSen yes, it was, same time it's always scheduled. We didn't have much on the agenda though.

user228700

@JohnRennie Why would one need to immobilize ducks though?

Balarka Sen

17:05

Except duck tapes you mean

0celouvsky

@ACuriousMind yeah I'm not sure. It's just the sections of the sheaf, which should be trivially a group

But he says specifically that s-t is also a section

So I'm not really sure why he did that

ACuriousMind

@Kaumudi.H So they don't run away?

Stealthy criminals, those ducks

user228700

Ah, geez, I hadn't considered that they might be in need of...frying and such things :-|

John Rennie

why did the duck cross the road?
It didn't, Balarka Sen had wrapped it in tape.

3

0celouvsky

He might be worried about continuity, come to think of it

Ben Niehoff

17:07

woo! My accomplishment today is that I found an important typo in a paper written by my PhD advisor 17 years ago :P

Balarka Sen

@JohnR I'd rather study the trivial duck bundle over the road instead of the tedious process of capturing it and wrapping it up in tape

user228700

If all this really was part of the chat session, then it's been the best one so far :-P

0celouvsky

It wasn't a homework policy frenzy

So that's a win

ACuriousMind

@BalarkaSen What do you get if you cross a citrus fruit with a bull? - The trivial lime bundle on the taurus.

2

Balarka Sen

That's probably my favorite.

vzn

17:08

@BenNiehoff (congrats!) trying to remember were you in NY? new exhibition at Met on math + physics

ACuriousMind

@BenNiehoff Good job! Now back to work.

0celouvsky

Racist^

Ben Niehoff

no, I'm not in NY

user228700

Ah, while all of u are here, I'd like to ask something: vzn had been suggesting that I do the next A.M.A but really, how many of you would be interested in something like that?

ACuriousMind

@BalarkaSen Maybe duck tape attracts ducks so it wouldn't be tedious. Perhaps it's smeared in...ducknip?

0celouvsky

17:10

Why would you do an AMA?

a_sid

Can I post things here?

Balarka Sen

a wise man once said "do whatever you want"

ACuriousMind

(There's got to be an equivalent to catnip for ducks, right?)

Ben Niehoff

how interesting you are entirely depends on how you answer the questions, doesn't it?

paracresol

Anonymous

17:10

@Kaumudi.H Just don't speak about JEE!

user228700

@0celouvsky Ask @vzn.

paracresol

@JohnR Could you take a good look at that^^^?

vzn

@Kaumudi.H thx for your response, it does seem like enthusiasm for the whole prj may have faded :( plz dont take it personally think youd make great guest :) ... am very disappointed you are not getting support from some regulars on that :(

ACuriousMind

@a_sid Apparently you can.

John Rennie

@paracresol OK ... and?

Secret

17:11

0

Q: How does a electric quadrupole oscillate?

I know that in static a electric quadrupole is made of two positive charges and two negative charges, distributed as in http://d2vlcm61l7u1fs.cloudfront.net/media%2Fc2d%2Fc2d4c4de-d79e-4ed1-a7e4-c80f7564adde%2FphphTVHIG.png. What I don't understand is when it oscillates and radiates, does it osci...

user228700

@vzn :-) Nah. I didn't think that very many people would be interested anyway so I am not at all disappointed.

Anonymous

@vzn Actually I would be interested.

Ben Niehoff

honestly I'm not sure I see the point of doing an AMA in a chatroom...we already ask each other things about our lives

Secret

(That PSE) It's a donut, and it goes round and rooooouuuunnnddd

paracresol

@JohnRennie Is that relation the same as the first one here?

hyperphysics.phy-astr.gsu.edu/hbase/quantum/qangm.html

Secret

17:12

(Sorry I get drunk whenever I saw something rooooouuunnndd)

vzn

@BenNiehoff the rationale is similar to the biweekly meetings: to get a group together.

John Rennie

@paracresol yes

vzn

@Kaumudi.H last one was heathers which think went well. but its hard to sustain without some energy by others, do feel like am carrying entire load lately... original idea was DZs but seems even he's not even lukewarm on it any more :(

paracresol

@JohnRennie But L ^2 is an operator, right? So why was the wave function omitted in the hyperphysics equation?

Balarka Sen

meh i don't like being on the starboard much

user228700

17:14

@blue Why? :-P You're in the same time-zone as me, na? You can ask me questions at any time of day.

paracresol

^ @blue Piece of advice? Don't

ACuriousMind

@BenNiehoff Oh, we had one with @DanielSank that attracted quite a lot of non-regulars since he promised to talk about quantum computing and other stuff. An hour of focused talking with one person is a bit different from the usual free-for-all that goes on in chat

0celouvsky

@BalarkaSen why do you even hang out here

vzn

@paracresol huh? dont what?

Anonymous

@paracresol Why, only you have the exclusive right to flirt =P

Balarka Sen

17:15

@0celo i don't even know man

ACuriousMind

I originally thought of these AMAs as a means to draw more non-regulars

user228700

Ah, @para is back at it again! I was afraid this would happen...

paracresol

@blue That isn't what I meant >_<

Balarka Sen

i should ban myself out of here. h bar is like a sentinent blackhole of productivity

9

ACuriousMind

@BalarkaSen That's a risk you take when hanging out here :P

Secret

17:15

Well, it does drew more non regulars, but not the significant degree we expct

John Rennie

@paracresol The eigenfunctions of the operator $\hat{L}^2$ have the eigenvalues $L^2$.

Balarka Sen

should i say wormhole?

user228700

@vzn Hmm. It's OK :-) I hope you're able to find someone truly interesting to whom others want to ask questions.

Balarka Sen

nah

paracresol

Wait...Hey! I'm not flirting with anyone! Especially not with him! (points at @Kau)

@JohnRennie Broods

ACuriousMind

17:16

@BalarkaSen It's beautiful, isn't it? :P

0celouvsky

Indian romance

Anonymous

@BalarkaSen I once asked ACuriousMind to ban me. He didn't. So the only way would be to do something disastrous....!

0celouvsky

Can we have a bollywood

ACuriousMind

@paracresol 'him'?

Anonymous

@0celouvsky That's crap (Though I enjoy crap once in a while)....

vzn

17:16

@Kaumudi.H lol you were it :) ... thx for your interest/ response

paracresol

@0celouvsky ಠ_ಠ

0celouvsky

@blue takes one to know one

John Rennie

@paracresol So it's corretc to write $\hat{L}^2\Psi = \ell(\ell+1)\hbar^2\Psi$

paracresol

^ Roger that!

0celouvsky

@BalarkaSen just post some pictures from /b/

user228700

17:17

@ACuriousMind Don't mind him. He likes to pretend that I'm a guy from time to time and then he will flirt with me for a minute or two before rushing to declare that he is completely straight.

John Rennie

And it's also correct to write $L^2 = \ell(\ell+1)\hbar^2$ where $L^2$ is the eigenvalue so it is just a number.

paracresol

@Kaumudi.H Oh, you picked up a pattern? ;)

@JohnRennie Wait...

Lost again

Balarka Sen

@0celo Too hardcore

user228700

@paracresol :-( Please don't ruin The h Bar for me.

paracresol

Gimme a minute, please.

sighs

Steers clear of @Kau

0celouvsky

17:19

@Kaumudi.H what

I don't understand you people

Do you love each other or not

Secret

> Anything is infinite compared to koolman, therefore it will be fine

Ben Niehoff

I'm terrible at flirting. Always have been :\

ACuriousMind

@Kaumudi.H If you don't mind then neither will I, but I consider calling you "he/him" when you are obviously female pretty disrespectful

paracresol

Shoots @0celo

user228700

@ACuriousMind I've tried before but there seems to be something wrong with his understanding of this matter. What to do...

Ben Niehoff

17:20

I am also terrible at recognizing which Indian names are male or female!

paracresol

@ACuriousMind Wha....

Balarka Sen

ignore

paracresol

Gah!

Balarka Sen

ez solution to every trouble on earth

user228700

@0celouvsky Gah! >.< No! Geez.

John Rennie

17:21

Either I've been taking stronger psychedelics than usual or this chat room has become very strange.

user228700

I know him from The Periodic Table.

paracresol

^^ The ~~former~~ latter

Balarka Sen

@JohnRennie Everybody's on higher doses of LSD

paracresol

0:)

ACuriousMind

@Kaumudi.H If you have asked him to stop and he didn't then I'll be happy to ensure @paracresol does not do that in here.

paracresol

17:22

@ACuriousMind ...

user228700

@JohnRennie It's because @para has come over here to insult me some more :-(

AccidentalFourierTransform

sup

paracresol

....

John Rennie

Someone has slipped LSD into the CAT5 cabling ...

paracresol

@AccidentalFourierTransform Oh... Hi...

Dejected look

user228700

17:23

@para: What to do? I don't understand your spectacularly weird sense of humor, if that is what this is.

paracresol

-______-

ACuriousMind

@paracresol I'm serious. Currently I can't quite tell if this is mutual joking or not, but if she does not find it funny and you continue then you should stop. Period.

Ben Niehoff

I keep reading your name as paracetamol

Balarka Sen

quite appropriate too

0celouvsky

@ACuriousMind I had more than one sheaf question!

ACuriousMind

17:24

@JohnRennie A bit of both, I guess

Balarka Sen

this is giving me a headache

user228700

@ACuriousMind It's certainly not mutual. I don't appreciate it or anything but I've decided to tune it out so it doesn't offend me either; I've had some time to get used to this at The Periodic Table, you see.

AccidentalFourierTransform

yeah, jokes about menstruation just aren't funny. Period.

Ben Niehoff

lol

Balarka Sen

i'm gonna go back to listening to these utterly unhinged people

ACuriousMind

17:25

@0celouvsky "help, presheaf of modules makes no sense" is not a question ;P

paracresol

@ACuriousMind Acknowledges ACM

Anonymous

@AccidentalFourierTransform What's going on here? ....:P

paracresol

@JohnR Need quick confirmation: Solutions to the Schrödinger equation are eigenfunctions and their associated energies are eigenvalues.

ACuriousMind

@Kaumudi.H You shouldn't need to "tune it out", and you shouldn't "get used" to that, either. Habitually (as opposed to one-off remarks) making fun of another user when they do not appreciate it is a rather clear breach of the Be Nice policy in my view and should not be tolerated.

paracresol

^ Sighs

John Rennie

17:28

@paracresol The time independent SE is $$\hat{H}\Psi = E\Psi$$

paracresol

Yeah...

John Rennie

So the functions $\Psi$ are the eigenfunctions of $\hat{H}$ and $E$ is the eigenvalue.

AccidentalFourierTransform

you can also rewrite it as $\Psi\Psi=\hat H E$, so that $\Psi$ is both the operator and the eigenfunction

Balarka Sen

If you know what eigenstuff means you also should have been able to answer it yourself

AccidentalFourierTransform

and $\hat H$ becomes the eigenvalue

user228700

17:30

@ACuriousMind I understand. I've just come to accept that he has a weird (af) sense of humor and decided to ignore his absurd remarks. Besides, there is nothing else I can do. I've tried to understand it but to no avail.

paracresol

Re-reads

^^ And I've officially become her scapegoat...

0celouvsky

He has a crush on you but lacks the social skills to tell you

paracresol

Sighs

Balarka Sen

This is not humor, this is childishness.

paracresol

@0celouvsky Sighs louder

ACuriousMind

17:31

@paracresol How would you feel if I followed you around to make disparaging remarks about you? Show some empathy, here. "sigh" is not exactly the reply I was hoping for.

John Rennie

@BalarkaSen you've only just spotted that?

paracresol

@ACuriousMind Apology?

0celouvsky

@BalarkaSen your comments are r/Iamverysmart material.

Ben Niehoff

except for "eigenstuff", I like that

Balarka Sen

@0celouvsky I am the very model of weird reddits. What can I say?

paracresol

17:32

@ACuriousMind I'd feel terrible, actually...

Joshua Lin

Sigh

Ben Niehoff

$\Psi$

user228700

@paracresol My scapegoat? Right, this is about the time I decide to ignore you instead of attempting to understand.

0celouvsky

Nooo

Stop fighting

John Rennie

At the risk of talking about physics, I wonder if I should make the effort to answer this:

-9

Q: Does relativity hold in the dark?

I will start with a very often used example to explain the theory of relativity of Einstein, we consider 2 pair mirrors, one will be stationary and the other will be in motion. There will be a light ray in between them. As the mirror moves, the light ray travels more distance from one mirror to t...

quantum-mechanics general-relativity forces energy relativity

paracresol

17:33

2 mins ago, by paracresol

^^ And I've officially become her scapegoat...

user228700

Man, I was hoping this wouldn't happen here when you came over here this morning.

paracresol

You missed it ;)

The pronoun, that is...

user228700

Ah. Of course. I'm a he, not a she. Sigh.

John Rennie

@paracresol: congratulations, you've just earned your first (1 minute) suspension. It will be increased if necessary.

0celouvsky

@JohnRennie WTH??

@ACuriousMind :/

John Rennie

17:35

In an ideal world you will stop harrassing other users.

0celouvsky

It accurately describes my state of being

Ben Niehoff

one minute?

Balarka Sen

alas, world is hard

Ben Niehoff

quick, let's talk about something exciting so he misses out!

ACuriousMind

@BenNiehoff So, what typo did you find?

John Rennie

17:36

@BenNiehoff I used a kickmute. The first kick lasts 60s but the length of the suspension increases with subsequent kicks.

Ben Niehoff

so, there are these things called "uplift formulae"

AccidentalFourierTransform

let's talk about exciting things we can do in under a minute

paracresol

@0celouvsky "Strength lies in attack, not defense"... said someone I don't really remember ._.

Ben Niehoff

which allow you to do the opposite of a "consistent truncation"

paracresol

@JohnRennie ...

ACuriousMind

17:37

@JohnRennie It's not a suspension, technically, since the user is just barred from this one room.

Ben Niehoff

a consistent truncation is when you start in some higher-dimensional SUGRA theory, assume some isometries (especially on spheres), and reduce to a lower-dimensional theory

the case in question is a reduction from IIB to 5d gauged SUGRA

ACuriousMind

I faintly recall reading about truncations

AccidentalFourierTransform

we did that in classical point-particle mechanics

Ben Niehoff

"consistent truncation" means that the equations of motion close using only the modes you've turned on

AccidentalFourierTransform

rotational symmetry -> effective 1D problem

paracresol

17:38

@BenNiehoff Gee, that was thoughtful :3

user228700

@JohnRennie Thank you :-) @para: I've decided to completely ignore your comments about me. Thanks to the kindly folk over here, I've realised that I shouldn't put up with your weird sense of humor if it comes packaged in these absurd (af) comments.

Balarka Sen

@0celo7 If I have a negatively curved manifold, is the exponential map a diffeomorphism?

Ben Niehoff

anyway, an "uplift" is doing the opposite: taking a 5d solution, which you know beforehand sits within a consistent truncation, and lifting it to a 10d solution

0celouvsky

@BalarkaSen You need completeness

Balarka Sen

Ah, yes, fair enough.

0celouvsky

17:39

Then it is, yeah. For specifics check out the Cartan-Hadamard theorem

You need simply connected as well

Ben Niehoff

these uplift formulae are quite non-trivial and difficult to find, I guess

ACuriousMind

@BenNiehoff Is that 1:1 or can only certain solutions be uplifted?

0celouvsky

But in any case you get that the universal cover is R^n

Ben Niehoff

for example, lifting 5d gauged SUGRA to IIB requires exponentiating a 27x27 matrix of E6

Balarka Sen

@0celouvsky Sorry, what I meant to say is if that is a covering map.

Ben Niehoff

17:40

@ACuriousMind Only solutions which are contained within a consistent truncation can be lifted

that is the point of consistent truncations

0celouvsky

The I believe I answered your question anyway

Ben Niehoff

so, e.g., various metric modes of the higher-d theory might organize themselves as scalars and vectors in the lower-d theory

Balarka Sen

Yah; just googled Cartan-Hadamard.

Ben Niehoff

as long as only those scalars and vectors are turned on, you can lift them back to 10d

user228700

@JohnRennie "Than usual"? Who are you?!

Ben Niehoff

17:42

so anyway, the typo was that the metric uplift was wrong

John Rennie

@Kaumudi.H well caffeine is a psychedelic, and I drink coffee ...

ACuriousMind

Feb 12 at 11:25, by John Rennie

I spent 99% of my money on drugs and laptops - the remaining 1% I wasted

Balarka Sen

Funny. I was envisioning hyperbolic manifolds as quotients of H^n and came to the guess about exp using that. It seems that's precisely the proof that hyperbolic manifolds are quotients of H^n

John Rennie

@ACuriousMind :-)

user228700

Ah, yes. Loads of it too! :-)

Ben Niehoff

17:43

in order to get the correct 10d metric, I had to do a bunch of annoying crap with an E6 group element in the 27 rep

but the worst part was inverting a 5x5 matrix

Balarka Sen

use cocaine, not caffeine

paracresol

@JohnR If s is "sharp", p is "principal", d is "diffused and f is "fundamental" ... then what's g? (Assuming I'm no longer Persona non grata here)

Ben Niehoff

because the uplift formula gives you the inverse metric

ACuriousMind

@BenNiehoff That's...doable by hand :P

AccidentalFourierTransform

gravity

Ben Niehoff

17:44

@paracresol after f, they just go in alphabetical order

paracresol

Great!

John Rennie

@paracresol No idea to be honest. Doesn't that nice Mr Google know?

Ben Niehoff

@ACuriousMind The trick is to invert the matrix in a useable way

paracresol

@BenNiehoff That's also...kind of anti-climatic though ._.

Ben Niehoff

by the way, Mathematica couldn't do it after running for several minutes

0celouvsky

17:44

@BalarkaSen if you're interested in Riemannian coverings, the book by Wolf has a bunch of information about them. The whole book is basically working out covering maps

AccidentalFourierTransform

so how did you do it?

maple?

0celouvsky

I'm simplifying and haven't read the whole thing :P

paracresol

@JohnRennie He was nice?

Ben Niehoff

oh, and the other problem is, it's a 5x5 matrix written in a 6x6 basis...so actually, it's a 6x6 matrix with one zero eigenvalue

@AccidentalFourierTransform I did it by hand, by figuring out how to organize things and making an ansatz

AccidentalFourierTransform

damn you

Balarka Sen

17:45

I should learn Riemannian geometry before Riemannian coverings I guess

AccidentalFourierTransform

Ive seen Nobel prizes awarded for less

Ben Niehoff

there's a trick where you can write the metric for a sphere in Cartesian coordinates, as long as you remember to impose the constraint $\sum_i x_i^2 = 1$

0celouvsky

Btw the cartan hadamard theorem has many different proofs

Ben Niehoff

that kind of trick is being used here

0celouvsky

Quite interesting

Ben Niehoff

17:47

except the metric isn't a round sphere anymore

user228700

I'm off. Bye, everyone! :-)

AccidentalFourierTransform

ciao

John Rennie

Bye

Balarka Sen

@0celouvsky Trying to understand it for surfaces.

0celouvsky

@BalarkaSen you would like the Morse proof

paracresol

17:49

Grudgingly bids her farewell

Tschüss @Kau o/

Balarka Sen

I mean it's easy for surfaces because of uniformization but that's not what I want.

0celouvsky

I don't claim to remember how it goes, but Morse theory is generally neat

Balarka Sen

Ah, there's a Morse theory proof?

Ben Niehoff

But yes, I did literally spend about two weeks of my time inverting a 5x5 matrix :P

0celouvsky

Yes

It's in Milnor

Chapter 19-ish

Balarka Sen

17:50

Ah, light bulb. Why did I never try to read Riemannian geometry from Milnor's red book?

It's quick and short and perfect to get myself out of the productivity rut

0celouvsky

Because it's far too terse and only a small sliver of RG?

paracresol

Oh wait, back to azimuthal Q-numbers being integers, @JohnR could you have a quick look at the end of this section?

Azimuthal quantum number

The azimuthal quantum number is a quantum number for an atomic orbital that determines its orbital angular momentum and describes the shape of the orbital. The azimuthal quantum number is the second of a set of quantum numbers which describe the unique quantum state of an electron (the others being the principal quantum number, following spectroscopic notation, the magnetic quantum number, and the spin quantum number). It is also known as the orbital angular momentum quantum number, orbital quantum number or second quantum number, and is symbolized as ℓ. == Derivation == Connected with the energy...

Balarka Sen

It's good motivation though

I like Milnor's writing

ACuriousMind

@BenNiehoff Sounds fun ;)

John Rennie

@paracresol Yes?

Ben Niehoff

17:52

@ACuriousMind As many calculations go, it was very frustrating and took many pages, and then suddenly everything fell together and the result is two lines

AccidentalFourierTransform

sorry, that means that the result is wrong

there is a theorem that says that the inverse of a 5x5 matrix is at least three lines long

paracresol

^ But those aren't integers ._.

ACuriousMind

@AccidentalFourierTransform Actually, it should be about five lines...

Anonymous

@paracresol $L$ is not $\ell$

AccidentalFourierTransform

$L=\sqrt{\ell(\ell+1)}$

John Rennie

17:55

You are mixing up the quantum number $\ell$ with the angular momentum $L$.

Anonymous

^

AccidentalFourierTransform

@ACuriousMind no, that is for full-rank matrices

my theorem is stronger

paracresol

That's three of you telling me the same thing at once...wow

Anonymous

@AccidentalFourierTransform You missed the hbar there on purpose, or did you leave it as it is already written on the right top of the web-page? =P

ACuriousMind

@AccidentalFourierTransform Let's not enter into a theorem-measuring contest, here

AccidentalFourierTransform

17:56

@blue $\hbar=1$

ACuriousMind

@blue $\hbar = 1$ in real physics :P

John Rennie

@blue $\hbar = 1$ dolt!

AccidentalFourierTransform

@ACuriousMind lol

Anonymous

My gosh

Anonymous

Too many people at once

Anonymous

17:56

lol

Balarka Sen

units schmunits

ACuriousMind

well, that was unanimous

paracresol

I see, thank you. @JohnR @Accidental @blue

AccidentalFourierTransform

np

John Rennie

Any time you want a second and third opinion let us know :-)

Danu

17:57

o/

DanielSank

@ACuriousMind Ahhhhh the wonders of working in a buzz-field...

Danu

I'm back

DanielSank

@Danu \o

Ben Niehoff

@ACuriousMind I mean the line element is 2 lines long

ACuriousMind

@Danu You were gone? :P

Danu

17:58

@DanielSank ...from the Greek islands!!

@ACuriousMind I haven't been in chat for about 10 days :P

Balarka Sen

he's a mathematician now

Danu

In other news, tomorrow's an exam and I haven't studied yet

paracresol

Cheerio @JohnR o/

Danu

yikes

Symplectic Geometry how do I

paracresol

Tschüss @Accident o/

ACuriousMind

17:59

@Danu What the hell are you doing here, then? :P

Balarka Sen

rip

John Rennie

@paracresol Bye

Danu

Yo, does turning off the sound notifications not work for anyone else?

ACuriousMind

Why would I try to turn that heavenly sound off?

AccidentalFourierTransform

@paracresol ciao

Balarka Sen

17:59

It does not not work for me.

Transcript for