The h Bar

Yup

Anonymous

Any specialization?

Anonymous

Theoretical/Experimental?

Theoretical seems a bit too much for me. I have a glimpse of what higher math really is, and although I can see the appeal, it doesn't attract me that much

Not sure really

Might take up quantum computing or high energy physics

Anonymous

From what I know about you, I think computational physics will suit you. It's not extremely theoretical, but rather sort of "experimenting using computers"

Anonymous

6:04 PM

(That's some naive advice there, but it might help since you seem to be interested in CS :P)

Anonymous

Yeah, and QC is nice too. Has both experimental and theoretical aspects

@JaimeGallego I don't think Austria is "Eastern Europe" :P

@JaimeGallego You're going into Physics? Not CS? :(

@BernardoMeurer I betrayed you months ago

Why would you do this to yourself

Tanuj

6:07 PM

@Blue can you tell me if this is true or false ?

nvm,got it.

Anonymous

Well, $h\nu-\phi=E_K$, where $E_k$ is maximum energy of emitted electron...

Anonymous

Yeah, should be easy

@BernardoMeurer Just wait where he'll be in a couple of years before you start judging ;P

The only worthwhile field is mathematics

@ACuriousMind I just have to wait out his willpower, then fish him back into CS

Just like I did with you

@0celo7 Agreed, CS is just discrete math

6:12 PM

Discrete math is not on the list of good mathematics

@BernardoMeurer I'll end up as a rundown matlab operator, running the streets and making airfoil simulations for pennies...

@0celo7 Yes it is

Nah.

Together with logic and set theory

PDE, geometry, topology are the only worthwhile ones.

6:13 PM

Did you like that meme I sent you btw

About IUT theory

I should make one for geometry

I was reading on IUT and it's so completely insane

I don’t have a feeling for how insane it really is

You probably wouldn’t understand any more of my work

Anonymous

@0celo7 What was your first (good) Differential Geometry textbook? (serious question)

So if you’re used to number theory it might not be bad

@Blue do Carmo

Qmechanic

6:17 PM

0

Q: R-matrix for spin chains

In algebraic Bethe ansatz procedure, one of the central objects is the R-matrix satisfying the Yang-Baxter equation, but all the papers/books give directly its expression without deriving it, so my question is How can i derive the R-matrix for XYZ/XXZ Heisenberg model?

Too broad?

Anonymous

Kreysig is getting terse from the 2nd chapter onwards

Anonymous

Ah, I'll check de Carmo

I tried reading Kreyzig in HS but found it very boring

Anonymous

Does De Carmo include tensors and forms too? Or is it the classical curves and surfaces type book?

He assumes basic manifolds stuff

Anonymous

6:20 PM

Someone suggested me this one

Anonymous

Any experience with this ?

I’ve seen it but had no reason to get it.

Anonymous

@0celo7 Same. It's quite boring :P

@0celo7 I have this folder in my computer

7.2G ./Springer Graduate Texts in Mathematics

Full of, ehm, legal porn

Anonymous

Okay, thanks anyway. I'll try out the Do Carmo and let you know

6:21 PM

Do you want some?

I can get those completely legally through my school

@Blue It's do Carmo

@0celo7 You school gives you free porn?

::ahem::

Anonymous

Small d

Anonymous

Eeeh

6:23 PM

@ACuriousMind What?

@BernardoMeurer I bet the library has porn

My library has the Kama Sutra

Is that porn?

@BernardoMeurer Let's not get into a discussion of porn.

@ACuriousMind Well, we aren't, we're discussing university policy!

My keyboard has no key for expressing how hard I'm rolling my eyes right now :P

6:25 PM

Just think of it as “corn” and we’re nust having some insane discussions

@ACuriousMind Yet another point towards my proposal of the full-UTF-8 keyboard

@BernardoMeurer We need to genetically upgrade to a dozen arms for that, though

Sounds like something you should be working on

@ACuriousMind True, although that'd be 4 times as many arms as I have right now ( ͡° ͜ʖ ͡°)

@ACuriousMind get me an internship

@BernardoMeurer I don't think I've seen a single intern since I've started working here :P

6:29 PM

@ACuriousMind great, I can be the first one

There's lots of students, though, so maybe we just don't call them interns

I'm free May through August

I'm cheap and

Oh wait

Cobol stack

Maybe I could get you working on the C++ kernel beneath it :P

That would be nice :D

I'm just looking for a job over the summer

I have two interviews today

and one tomorrow

But they're all SV companies, and I need some time away from California and avocado toasts

@BernardoMeurer COBOL these days is a license to print money

Tanuj

6:31 PM

Guys , in $Q=mL$ , $L$ is latent heat , $m$ is the mass of substance undergoing change of state right ?

@JaimeGallego Hm?

@Tanuj Ye

Tanuj

@BernardoMeurer cool thanks :)

Banks still run COBOL programs on their backend

They'll pay almost anything for people with experience on it

That's an old lie

1. SAP and other large infrastructure companies use COBOL dialects everywhere too

2. The "salary curve" has long been flattened, nowadays they'll just get fresh students and teach them COBOL. You won't get paid differently from C, C++, etc programmers

3. Banks have begun modernizing their stack

@BernardoMeurer Not in this part of the world, at least

There's still some old folks with years of experience under their belt

6:35 PM

The true "no one knows this and we'll pay you in human organs for every second of work" skill nowadays is ancient obscure Assembly languages, used in nuclear powerplants and stuff like that

Who get paid handsomely

I thought about doing that

But then I realized anything to do with computers is worse than just killing myself.

@JaimeGallego I'm not saying they don't, I'm saying the whole "LOL LEARN COBOL AND MAKE ZILLIONS" thing is a lie, those guys make the same they would if they were very senior devs at Google or w/e

@BernardoMeurer That I can agree

Inb4 ACMs salary is a zillion euros

6:37 PM

@ACuriousMind How much money do you make

I'd guess ~ 60k€

Although Berlin salaries have gone up recently, so idk if the same happened in ACM's area

He’s just going to ignore you like he always does when he doesn’t want to answer

@ACuriousMind Why do you ignore me

Racism against Brazilians

Anonymous

Well, asking about salaries isn't very polite :P

@BernardoMeurer Did you see my message about the CDC computer and stuff?

6:40 PM

@BernardoMeurer Geez, this is not the only chat I'm paying attention to :P

And before taxes I make 50k€

@JaimeGallego Yes, but you didn't link?

@ACuriousMind Damn, my guess was close!

@BernardoMeurer livingcomputers.org/Discover/Online-Systems/…

Anonymous

@DanielSank The site is public now :D

Seems low for a CEO

/me has been looking for jobs all week and knows the salaries

@0celo7 Agreed

@JaimeGallego Damn, they have a PDP-11

6:42 PM

I’m starting to think I’m a sociopath

Anonymous

@0celo7 That's a downgrade. Few months back you confirmed that you are a socio

I was doing a meme then

@BernardoMeurer I'm afraid my leverage to get you one is probably rather low

@ACuriousMind How come the CEO doesn't have leverage?

As CEO I'm bound to the judgement of the executive board :P

6:47 PM

@0celo7 This isn't adding up ^

CONFIRMED ACM IS CEO OF SAP

@BernardoMeurer I have my Rio dates fixed.

@0celo7 Awesome! What are they?

Anonymous

Bill McDermott

William R. "Bill" McDermott (born August 18, 1961) is the CEO of SAP SE. He served as co-CEO of SAP alongside Jim Hagemann Snabe from February 2010 until May 20, 2014. == Early years == McDermott was born one of three children to Kathleen and Bill McDermott and raised in Amityville on Long Island. He became an entrepreneur as a teenager by purchasing a local delicatessen, Country Deli, for $7,000 in promissory notes. This deli paid his way through Dowling College, where he studied Business Management. He is a grandson of basketball player Bobby McDermott. == Career == After Dowling Coll...

Anonymous

Bill (Bjorn) McDermott? ;)

Aug 1-9 might get there a day or two earlier.

6:49 PM

@Blue He left in 2014, ACM is the current CEO

@0celo7 Dope, I'll schedule my flights as soon as I have internships settled, throughout this week

WE'RE GOING TO GET SHITFACED

Its a business trip

We’re going to find Yau and get him drunk

Just don't drink and derive

That's how I do business

He will tell us the secrets of the universe

@ACuriousMind I passed analysis drunk, so I don't think that's good advice

@0celo7 We should throw a badass party

6:51 PM

Yau will actually be there but probably with half the Chinese army

We can probably get some other famous person to join us.

Is Tao going?

Everyone is going

What about the IUT fella

He probably doesn’t care

More likely we’ll get Rick and Fernando

I wish Perelman was going, I think we'd be besties

6:53 PM

He’s under a rock in Siberia

Who's Fernando

@0celo7 Probably hiding from Bernardo's potato army. Wise decision

Guy who’s gonna get the Fields medal this year, hopefully

::activates German potato division::

@0celo7 Link?

FC Marques

6:54 PM

@BernardoMeurer Bad luck, us Germans just eat the potatoes :P

Fernando Marqués

José Fernando Marqués Martín (born 4 December 1984) is a Spanish professional footballer who plays as a midfielder. == Club career == Born in Madrid, Marqués first appeared professionally for hometown's Rayo Vallecano, playing ten games in La Liga then 25 in Segunda División. In the 2004–05 season he signed with Racing de Santander, but several bouts of indiscipline made him fall out of favour with the management, and he joined Atlético Madrid on loan in the January transfer window; he spent his first months with the capital side's B-team. Eventually Marqués failed to settle with both clubs, with...

I didn't think a soccer player could get the fields medal

FC!

Coda

Fernando Codá Marques

Fernando Codá dos Santos Cavalcanti Marques (born 8 October 1979) is a Brazilian mathematician working mainly in geometry, topology, partial differential equations and Morse theory. He is a professor at Princeton University. In 2012, together with André Neves, he proved the Willmore conjecture. == Biography == Fernando Codá Marques was born on 8 October 1979 in São Carlos and grew up in Maceió. His parents were both professors of engineering. Codá Marques started as a student of civil engineering at the Federal University of Alagoas in 1996, but switched to mathematics after two years. He obtained...

B R A Z I L

I need to hit it off with him while there

I need a PhD advisor

Damn he had classes at IMPA with do Carmo and Lages Lima

6:57 PM

And with my advisor

Dope

So we have an in

Nice

I knew a guy who knew Lages Lima, but he died last year, so that's not very useful

And if he gets the fields medal he’ll be incredibly popular and powerful so I need to meet him now

What's the getting Fields for, you think?

7:01 PM

Willmore conjecture

It’s of course all rumored but if a geometer gets it this year it’s him or Brendle

Is that a big deal? The Wikipedia page for the problem would suggest it's not that important

But if Brendle was going to get it, they would have done that 4 years ago

Coda Marques is close to the age limit tho

So is Brendle

@BernardoMeurer I don’t know the solution but I think the method for the proof is very important

@BernardoMeurer yeah it’s the last time either one of them could get it

I’m working on a Fields medal level problem. I have zero progress 🙃

Yamabe Problem?

7:04 PM

No, that was solved long ago

Not sure why Rick didn’t get the Fields medal for it

What are you working on then?

That’s a secret.

Bah, text me then

Related to black holes

Hm

7:10 PM

Doing butt, legs and chest at gym.

Completely unnecessary ^

@Qmechanic I'm not sure, it's fairly specifc, isn't it? Just not a well-asked question, if anything, I could see closing as HW-like

I think that actually demonstrating with references instead of claiming that the literature does not derive that expression would majorly improve it.

7:25 PM

@ACuriousMind btw the Thesis will be 100 pages longer when submitted

How far have you read?

Uhhhhhhhh

I have to take the 5th on that one, sorry

@0celo7 have you finished a draft of it yet

It’s fairly complete right now. I’ll be adding more chapters over the next year

Depending on my summer research of course

are you gonna make it a book or smth

@0celo7 You publish with Elsevier and I'll burn you

7:28 PM

send it over to me ill give it a read if i have time given our interest overlap

Well my research is related so if something comes from it I can just throw it in.

I’m not going to write anything just for the thesis anymore.

btw @0celo7 have you gotten any updates from either Sougie or André

No, I keep forgetting to talk to Andre. I don’t think Takis gives a shit.

he's kind of like that yeah..

Slereah

You know who has a good talk on Killing vectors?

Stephani.

Hm

Stephani calls the vector flow Lie dragging

Is that a common word?

7:50 PM

I've at least heard it before, so it's not all that rare

dmckee

^ related to the comments on physics.stackexchange.com/questions/397474/…

Solid blue is the classical PDF, dashed rued is the quantum PDF.

Slereah

"A spacetime $V_4$ is said to be spherically symmetric if it admits a group $G_3IX$ of motions acting on spacelike $2$-spaces $S_2$ and if the non-metric fields inherit the same symmetry"

Gee whizz

I guess that would prevent any geodesically incomplete space, since then the orbits wouldn't be $S_2$

Oh wait

$S_2$ here just means a 2-manifold that is spacelike

Hm, what is $G_3 IX$

it's one of the Bianchi groups

@ACuriousMind what would you say a good definition of isotropic is?

For a manifold

$SO(n)$ isometry at every point?

Jake Rose

Wheres the best website to search for scientific papers?

Besides my own universities website?

Slereah

@JakeRose arxiv, inspireHEP

There's a few others

Jake Rose

Thank youm

Sha Vuklia

8:04 PM

guys, say we have two (coherent) waves with initial phase difference=0. Then say wave 1 travels a bigger distance than wave 2, to arrive at a certain point P. Is it then convention to say that wave 1 is lagging behind, and to write the phase different at P for wave as a negative phase difference? Because that is what my book is doing, while I would think that it makes more sense to have a positive phase difference for the wave that traveled a longer path

so for instance, my book would write $Ee^{i(\omega t-\delta)}$ for wave 1

diobuc eulb

@ACuriousMind use pandoc

just do it in latex and it can convert the code to any format

D.Hutchinson

8:35 PM

sup dawgs

I got a general fluid dynamics research question

Captain Bohemian

what does the general refer to? out of equilibrium?

D.Hutchinson

no :(

Captain Bohemian

then what is it?

9:17 PM

@BernardoMeurer they have the best covers.

9:38 PM

Shooting at YouTube HQ

shooter was female

cnn.com/2018/04/03/us/youtube-hq-shooting/index.html

crazy

hmm i guess this happens everywhere now

Rumplestillskin

Hey guys! Does anyone have much experience with the tetrad formalism in GR?

I do but can't talk about it now

Rumplestillskin

Okay cool! Hit me up whenever you are free. I have really just came across them so I know almost nothing :)