The h Bar

ACuriousMind

12:10 AM

@Phase What question?

@SirCumference lol

@SirCumference GR. He likes GR :P

Sir Cumference

@ACuriousMind But the only application for GR is astrophysics...

ACuriousMind

@SirCumference Who said anything about applications?

Sir Cumference

@ACuriousMind Well then it's just math, not physics...

ACuriousMind

As an analogy, the main application for number theory is cryptography - that doesn't mean all number theorists like cryptography.

@SirCumference It's close to math, sure. What's the problem?

Sir Cumference

@ACuriousMind I dunno, it surprised me that he was studying physics (IIRC) instead of math, considering he seems more interested in the maths rather than the study of the universe

ACuriousMind

12:22 AM

@SirCumference Once again, you recall wrongly.

He's studying nuclear engineering and math, noth physics.

Sir Cumference

@ACuriousMind Common trend of mine, I guess

@ACuriousMind But why study GR specifically if you aren't interested in how the universe works? It's like taking a Physics class that incorporates calculus, instead of taking calculus

He could've just studied the math necessary for GR

ACuriousMind

@SirCumference Where did "interest in how the universe works" so suddenly come from?

Sir Cumference

@ACuriousMind Well, GR describes how a universe works, does it not?

0ßelö7

@ACuriousMind pls, Courant

I'm assuming the t is silent

ACuriousMind

@SirCumference Only if you really want to condense it down to a soundbite that doesn't actually mean anything :P

Sir Cumference

12:33 AM

@ACuriousMind All right, what else could GR be good for?

ACuriousMind

@0ßelö7 Am I French?! No idea how that's pronounced

0ßelö7

@ACuriousMind Well, whom should I ask

@SirCumference you're the only one demanding it be good for anything

ACuriousMind

@0ßelö7 Wiktionary, for instance :P

0ßelö7

and that's a very loose "good", I don't think understanding astrophysics does me any good either

Sir Cumference

@0ßelö7 I mean, saying "I study GR for the math" seems analogous to "I study newtonian mechanics for the math"

0ßelö7

12:35 AM

@ACuriousMind that's the German one

@SirCumference that's reasonable too. Lots of math has come from trying to understand the Laplace equation and the many-body problem

ACuriousMind

@0ßelö7 ...it has the IPA of the French as wellas a sound bite

0ßelö7

the IPA is helpful, can't get the soundbite to play

ACuriousMind

@SirCumference You seem to have this weird idea where one can only study physical theories "for the math" or "for an application". Why can one not just study them for their own sake?

Sir Cumference

@0ßelö7 How could you use the many-body problem if you're not analyzing physical bodies?

Jasper

@0ßelö7 In case you want to learn these languages, I recommend Assimil as the best course. Book with CDs.

0ßelö7

12:37 AM

@ACuriousMind after some deliberations, I have decided that i.gyazo.com/bcb7b1567fb099e68c94518bb15c41d8.png is the least offensive to all involved. Those who like physics will understand it and those who don't won't be offended by a physicist proof

@SirCumference what

ACuriousMind

@Jasper I think he's just trying to pronounce a mathematician's name, not learn the language :P

0ßelö7

@ACuriousMind I am translating a French book and multiple French papers. Knowing French would be helpful.

Sir Cumference

@ACuriousMind I've never met someone who studies physics but isn't interested in physics...

0ßelö7

@SirCumference I'm not disinterested in physics

Jasper

@0ßelö7 Let me give you the link to the product then...

ACuriousMind

12:39 AM

@SirCumference You have a very narrow idea of what constitutes "interest in physics".

Sir Cumference

@0ßelö7 How are we defining physics? I always thought it refers to the study of the physical universe.

Jasper

@0ßelö7 fr.assimil.com/methodes/french-216#pack-mp3-livre-cd-mp3

That is one book and one MP3 CD.

0ßelö7

@SirCumference idk, can you coherently state your objection pls

Sir Cumference

@0ßelö7 ??

I was just wondering what part of physics you're interested in

0ßelö7

@ACuriousMind If I send you 10 slides, can you please give an estimate of how long you think it would take me to get through them?

In my mind 1 minute, but I know that a 600 slide presentation would not fit in one hour

So something is wrong there

Jasper

12:44 AM

@0ßelö7 To do that, we need to make many assumptions.

ACuriousMind

@0ßelö7 Sure, but it will be wildly off ;) The best way to judge the length of the presentation is to do a test run

Jasper

But that's what physicists do, make assumptions to make approximations. =D

0ßelö7

@Jasper none of us are physicists

Sir Cumference

@0ßelö7 ACM is, isn't he?

0ßelö7

@ACuriousMind says he is, but c'mon

Jasper

12:46 AM

@0ßelö7 I think A Curious Mind is. =D

Sir Cumference

JR is

0ßelö7

JR is a chemist

ACuriousMind

@SirCumference I seem to exist in limbo between mathematics and physics :P

Sir Cumference

@ACuriousMind I thought you were in industrial physics?

Jasper

I watched the movie A Beautiful Mind, and now there is a mod called A Curious Mind. My friend suggested I call myself A Dirty Mind, LOL.

0ßelö7

12:47 AM

@ACuriousMind talking to a wall, a rubber duck, my cat via facetime, or some poor human?

Sir Cumference

@0ßelö7 dmckee?

0ßelö7

@SirCumference are you high?

2

ACuriousMind

@SirCumference What is it with you and thinking I'm in industry? We had this exact same conservation a few days ago.

Sep 1 at 12:54, by Sir Cumference

@ACuriousMind I thought you were in industry all this time...

0ßelö7

@SirCumference he's not here right now

Sir Cumference

@ACuriousMind Wow...I think I might be losing it

Jasper

12:47 AM

@ACuriousMind Maybe you can do a double major? =D

Sir Cumference

@0ßelö7 He's in the chat now, just not active

0ßelö7

he is afk

Sir Cumference

@0ßelö7 Ok, Slereah?

ACuriousMind

@0ßelö7 Poor human or rubber duck works best for me

Jasper

The guys in the TeX chat room love ducks.

They even wrote a TeX package for drawing ducks

ACuriousMind

12:52 AM

@SirCumference You certainly seem to have a sub-par long term memory for what the people in this chat are doing with their lives :P

Which could just mean you don't care about us :'(

0ßelö7

rekt

Sir Cumference

@ACuriousMind Perhaps it's a bit concerning...

0ßelö7

I still don't know why he decided to attack me

Sir Cumference

@ACuriousMind I do care about you, @ACM

All right, I'm too tired to think properly

ACuriousMind

Ah, there it is - you really should sleep more

Sir Cumference

12:54 AM

@ACuriousMind I try. It just doesn't come ;-;

It's starting to affect me in classes

0ßelö7

@ACuriousMind czech emale

Jasper

@ACuriousMind I think your pic makes you look very fierce. =D

ACuriousMind

@SirCumference Insomnia? If it's really affecting you to the point of making you too tired to think you should perhaps see a physician (not a physicist :P) about that

Jasper

@0ßelö7 I need to copy your spelling.

0ßelö7

@ACuriousMind says the vampire...

@ACuriousMind Did you understand my encoded message?

ACuriousMind

12:56 AM

@0ßelö7 My sleep cycle is just shifted, not shortened :P

Jasper

My sleep is completely random.

Sir Cumference

@ACuriousMind I've been thinking about doing that, though I dunno what a physicist could really do

@0ßelö7 I thought he was a robot?

0ßelö7

a vampire robot

Jasper

Robot brain is less damagable than human brain.

ACuriousMind

@0ßelö7 'fraid not. How much of this stuff is supposed to be new to the audience, and how much a reminder?

0ßelö7

12:59 AM

@ACuriousMind You didn't understand "check email"?

ACuriousMind

@0ßelö7 Oh, that

I didn't consider that "encoded" :P

I've already opened the mail

0ßelö7

what did you consider encoded then???

Jasper

I thought the encoded message was in the email. =D

ACuriousMind

@0ßelö7 I had no idea, so I said I didn't understand the encoded message!

0ßelö7

oh

Jasper

1:01 AM

czech emale is certainly coding theory, but not cryptography. =D

0ßelö7

@ACuriousMind slides 1 and 2 should be familiar to everyone studying math, but past that, who knows

I'd wager my advisor has seen this before, but the new profs said they hadn't seen the construction

Jasper

@0ßelö7 Can I ask what you are presenting on?

0ßelö7

@Jasper the old 1953 construction of heat kernels on closed manifolds

with some of the proofs rescued from obscure 1950s journals and 1970s french books

Jasper

Ah, no wonder useful to learn French.

ACuriousMind

@0ßelö7 I think you might get by with a minute each for the first two slides then, but should plan on doing 2-3 for the following ones

Maybe 5 if the audience is prone to asking questions, that's difficult to predict

Jasper

1:05 AM

@0ßelö7 Anyway, would it be better if you just write on the board? I dunno.

0ßelö7

@Jasper doubtful

Jasper

I really hate slides. =D

0ßelö7

@ACuriousMind does it look good though? No obvious stupid stuff?

@Jasper why?

I hate whiteboards. I'm a giant and can only reach the top half of them

Jasper

@0ßelö7 I hate whiteboards. I love blackboards. I hate slides. Reason? I am old-fashioned.

ACuriousMind

@0ßelö7 Nothing that would be obviously stupid to me, no

0ßelö7

1:10 AM

@ACuriousMind Is "Physicist Proof" derogatory?

Jasper

@0ßelö7 It is just a little humorous to me. =D

ACuriousMind

@0ßelö7 Not unless in the way you say it "physicist" drips with disdain ;)

2

0ßelö7

@ACuriousMind no, I think physicist proofs are neat

@Jasper i.gyazo.com/7139457bdbd56912cf13543d5bdc9ee3.png

@ACuriousMind If I have a group $\Gamma$ acting on my manifold in a nice way, and I write the group action from the left, should I write the orbit space as $\Gamma\\ M$ or just $M/\Gamma$

holy shit what is that

ACuriousMind

@0ßelö7 You typed `\\`, which is a line break

Unless it is actually relevant at some point that the action/quotient is from the left, I'd just write $M/\Gamma$:

0ßelö7

Ok

@ACuriousMind what did I want to type?

ACuriousMind

1:23 AM

@0ßelö7 \backslash

0ßelö7

Oh :P