The h Bar

ACuriousMind

13:02

Hah, praise the modern age

After clicking through approximately two dozen login screens, I got that paper actually directly

Gaurav

@0celo7 By learning German, you're almost 20% through learning Sanskrit. Might be of some use to you some day. :)

gonenc

@Gaurav Germany, for uni purposes :D

@ACuriousMind sounds so horrible :P

Gaurav

@KyleKanos I'm only starring your comment on chat for the effort to write "My humor of the day"

ACuriousMind

@gonenc German sounds horrible :P

gonenc

@ACuriousMind that is sorta correct :D

@ACuriousMind except for goethe, he makes it sound magical :D

Gaurav

13:20

@gonenc hmm Most of the guys looking to go abroad for higher studies seems to prefer Germany. Heard it's because of lower expenditure to study there. How true is this ?

gonenc

@Gaurav I have no clue, you should ask @ACuriousMind :)

ACuriousMind

@gonenc I have no idea how Germany compares to other countries in that respect.

But, well, you simply don't have to pay money to study here, so that's a plus, I guess

gonenc

@ACuriousMind That's true but idk much about it either :D

Gaurav

@ACuriousMind Uh, what ? No MONEY ?

ACuriousMind

@Gaurav Education is free.

You have only to pay a very minimal amount for administrative stuff, but that's it.

Kyle Kanos

13:24

Subsidized completely is a more appropriate phrasing, no?

Gaurav

@ACuriousMind Subsidised, you mean.

ACuriousMind

They tried to introduce study fees a while back, but that drew so much protest they abolished them again

And yes, "subsidized" is the proper word :P

Gaurav

@KyleKanos It's always subsidised with an 's'

Kyle Kanos

Comparison of American and British English

This is one of a series of articles about the differences between British English and American English, which, for the purposes of these articles, are defined as follows: British English (BrE) is the form of English used in the United Kingdom. It includes all English dialects used in the United Kingdom. American English (AmE) is the form of English used in the United States. It includes all English dialects used in the United States. Written forms of British and American English as found in newspapers and textbooks vary little in their essential features, with only occasional noticeable differences...

Brits use s in many places that Americans use z

Gaurav

@KyleKanos Uh, yeah I know that.

Kyle Kanos

13:29

So what I wrote is correct for an American

gonenc

God I wanna buy a theremin now

0celo7

@KyleKanos It's at the main desk

@Gaurav I do know German, I'm just incredibly rusty

Gaurav

@KyleKanos I have rabid intolerance for the letter 'z', what's your problem ? :D

0celo7

@Gaurav no one likez you then

@ACuriousMind No results from my search...I'd probably have to talk to one of the research specialists there about a specific issue of a specific periodical

@KyleKanos What's with the Qmechanic-like colon?

Kyle Kanos

@0celo7 : I usually do that?

Actually, I only do that when I manually type the name in

0celo7

13:39

@KyleKanos Never noticed it before

Kyle Kanos

@Gaurav Z is a fantastic letter

@0celo7 Hmm, well scrolling through my recent comments, here are two instances of me doing so

0celo7

@KyleKanos I don't hunt down your comments

I wonder...will FF7 play offline on battery power?

Kyle Kanos

@0celo7 Well to be fair, the majority of my comments are canned responses

@0celo7 I don't think Steam requires internet connect; I seem to recall XeroKynos (an FF7 speedrunner) saying something like If my internet goes out, all that will happen is you [twitch viewers] won't see me play until it comes back

0celo7

FF7 requires a Square Enix account to play

now, does that mean it requires an internet connection to play at all?

we shall see

Kyle Kanos

I don't think it does

0celo7

13:45

works just fine

ugh, there's a cutscene

Kyle Kanos

Yes, a ~2 minute long one

And in 1997, this was amazing

0celo7

let's see if it will run on Ultra in 1800p on battery

34fps :D

lol, it's using 2% of my GPU

it must be locked to the 30 range then

Kyle Kanos

IIRC, most streamers get 30 fps

0celo7

not gonna play now

I have to fix the controls...WASD does not move my guy

why did we kill those poor red guys?

gonenc

what do you guys do when you see an answer, which doesn't add anything new and almost the same answer given by someone else?

0celo7

13:50

@KyleKanos really? MGS1 came out then and it was much beter

@gonenc get out the rifle

Waffle's Crazy Peanut

@KyleKanos Is it tricky for 2D too?

ACuriousMind

@gonenc If it really doesn't add anything and is given significantly later than the others, I might downvote it, but usually I leave those alone, or, if it was given simultaneously to the similar one, I upvote both if I would upvote one.

Kyle Kanos

@gonenc I would leave a comment saying something like, "While this is correct, it doesn't really add anything extra and is basically the same as the other answer (incl link)"

@0celo7 MGS1 came out in 1998, so FF7 came first

0celo7

@KyleKanos was just about to say that

Kyle Kanos

@Waffle'sCrazyPeanut That was for 2d...

Waffle's Crazy Peanut

13:54

Oh my...

Kyle Kanos

@0celo7 FF8 came out in 1999 and was better than both in terms of graphics

0celo7

@KyleKanos Did you see that screenshot I took last night?

Pixelated as a mofo

Kyle Kanos

@0celo7 Which one?

0celo7

the FF7 one

Kyle Kanos

Ah, just scrolled up to see it

0celo7

13:56

4 hours ago, by 0celo7

Kyle Kanos

Yeah, the backgrounds are beautifully rendered computer animations, the characters are not because of hardware/software limitations

0celo7

@KyleKanos uh, other way around?

the bg is literally just a picture

Kyle Kanos

You should see the "lost" FF9 backgrounds.

ACuriousMind

@0celo7 "Pictures" as background were very common back in the days

And they could be beautiful indeed

Kyle Kanos

@0celo7 Yeah, I wrote animations there but you are correct, it should be stills/pictures

ACuriousMind

13:59

You're spoiled by modern graphics technology ;)

0celo7

@KyleKanos What? How are the background pictures beautiful?

@ACuriousMind Not even, I can't play modern games on high settings!

Kyle Kanos

@0celo7 Possibly nostalgic viewpoint.

0celo7

I'm convinced my Bootcamp drivers are just not good for gaming. Saints Row The Third does not run well at all. I get better performance in GTA 5.

ACuriousMind

@0celo7 Lol, even the lowest setting of those are far above what one could have around 2000

0celo7

@ACuriousMind There's at least one modern game I can't play on potato settings ;'(

@KyleKanos Is that black border normal or should I lower the res to something normal?

Kyle Kanos

14:04

I think it's normal

0celo7

Is the snail's pace walking speed normal too?

Kyle Kanos

Hold run?

0celo7

These controls are messed up

But I'm not playing now

Kyle Kanos

Sadly, there's no "permanent run" built into the game, but there is this patch that might work.

0celo7

Jeb already has $114mil...

Another (multi-)billion dollar election

Kyle Kanos

14:11

@Waffle'sCrazyPeanut see this link or just search cfd mesh generation and you'll find resources about it

ACuriousMind

Computational physicists! Is there an easy way to check whether a function produces things distributed according to a certain measure? In particular when I have matrices and not a single number?

Or should I just trust that I have implemented the algorithm correctly? :P

0celo7

Another man watching the reception unfold marveled at the scene: "Every time I come here I think: There's two people who spend time over there who know the contents of what's in Area 51."

(referring to the Bush estate)

Kyle Kanos

@ACuriousMind This measure? Or something else?

ACuriousMind

@KyleKanos Yeah, that measure.

0celo7

ACM knows measure theory?

ACuriousMind

14:16

Specfically a Haar measure on a matrix group in this case

@0celo7 Not really

Kyle Kanos

Hmm, well I first have to figure out what that measure is

Then figure out what you mean

0celo7

lol

computational astrologers can't into measure theory

ACuriousMind

@KyleKanos I want to produce "random" numbers - but not uniformly random, they should follow a certain distribution. I take it you never needed non-uniform randoms?

Kyle Kanos

Oo, I can do that

You need the cumulative distribution function

Pick a random number between 0 & 1 (typically what your real RNG's give you)

ACuriousMind

Stop!

0celo7

14:19

ACM knows random matrix theory?

Kyle Kanos

Stopped

ACuriousMind

I am not producing a single number, I am producing a random vector

0celo7

@ACuriousMind Randomize each component?

Kyle Kanos

Isn't that a multivariate case then?

(or at least considered)

ACuriousMind

@KyleKanos Probably. They're not independent here, though, not sure whether that's an issue

I also know how to produce the numbers

I want to know how to check whether they follow the intended distribution

0celo7

14:22

@ACuriousMind Plot them and eyeball?

Kyle Kanos

Or use $\chi^2$?

ACuriousMind

@0celo7 Yeah, please plot SU2 matrices against the Haar measure distribution for me :D

0celo7

@KyleKanos That's boring.

@ACuriousMind I'm sure the LoC has something for that...

ACuriousMind

Hm...I probably should check if the individual entries follow the intended distributions, but the distribution for the entries is very ugly...sigh, still probably the way to go

0celo7

@ACuriousMind Is this a project?

ACuriousMind

14:24

@0celo7 Yes, I am simulating SU2 gauge theories on a lattice and would like to check whether I generate the correct random matrices before I proceed

0celo7

Ah, for your culinary QM class?

ACuriousMind

Indeed :D

0celo7

I have nothing to do...I should go to the LoC and start my force redshift research.

I will read literally every GR book ever written.

ACuriousMind

WTF

Something is still not right with my fonts

0celo7

@ACuriousMind On the bright side, I fixed the Morrowind font, did you see that :D

ACuriousMind

14:28

0celo7

And I installed a buttload of gfx mods, and others

ACuriousMind

pretty sure that's not the right font

@0celo7 Yeah, read it

0celo7

Where is that from?

ACuriousMind

@0celo7 gnu.org/software/libc/manual/html_node/…

0celo7

Why is the font so crazy on your screen

ACuriousMind

14:32

No idea

0celo7

I would show you what it's supposed to look like, but I can't into screenshot on work PC

Vatican officials say the Pope did not chew coca leaves, as had been widely discussed.

Really? Who gives a rat's ass about that?

Kyle Kanos

@0celo7 ?

0celo7

cnn.com/2015/07/07/world/pope-mass-ecuador-quito/index.html

Kyle Kanos

Hmm. Other sites say that coca is the main ingredient in cocaine...interesting

ACuriousMind

Well, damn. My random SU2 matrix isn't even in SU2 :(

0celo7

14:38

@ACuriousMind There's your problem

Is it at least U(2)?

Or SL(2,C)?

Or Mat(2,C) ;)

ACuriousMind

It should be a scalar multiple of a SU2 matrix

Due to the way I'm representing the matrix, it can't be anything else

0celo7

Is it neither S or U?

ACuriousMind

I don't understand why the normalization isn't working, though

Ah, just a typo.

0celo7

Oh, so it was U just not S?

@ACuriousMind How did you do this? Generate a random vector, dot it with the Pauli matrices and exponentiate?

ACuriousMind

@0celo7 Not exactly...you indeed set $\sigma^0 = \mathrm{id}$ and then represent an SU2 matrix by dotting a 4-vector with the matrices, but a "random vector" would not generate matrices distributed according to the Haar measure

Or, rather, the "randomness" of the vector is a bit complicated

I guess I'll indeed now just check component of component of that vector for being distributed right

0celo7

14:47

@ACuriousMind Is it possible to give a tl;dr on the Haar measure?

ACuriousMind

@0celo7 It is the up to normalization unique bi-invariant measure that exists on every compact Lie group :D

0celo7

@ACuriousMind Guess it's not possible

ACuriousMind

Ah, well, it need not be bi-invaraint, sorry :D

0celo7

Oh, that clears everything up

ACuriousMind

@0celo7 Oh, I think one can quite explicitly describe it on Lie groups: Choose an n-form on the group, it defines a volume form, which in turn defines the integral of function on the group.

0celo7

14:53

@ACuriousMind So the Haar measure is the associated measure of the volume form?

ACuriousMind

@0celo7 Yes

0celo7

I see

I don't see how that help me with redshifted forces...

Kyle Kanos

Gah, they've rescheduled my interview for Monday

0celo7

We should have a PSE Skype call...why have chat sessions when we could have Skype sessions?

In addition to, I guess.

If I were accused of what Bill Cosby stands accused of, I would not only tell my attorney to shut up and proceed to answer the question about whether I drugged someone without her knowledge, but I would also ask for a polygraph test and would pass it with flying colors. And I would be filing countersuits against every one of my accusers for defaming me. Cosby’s silence is deafening — and damning.

Kyle Kanos

I thought Cosby admitted to giving the girls drugs?

0celo7

15:08

I think he admitted to buying them for that purpose, but not outright giving them the drugs and raping.

Kyle Kanos

Hmm, I could have sworn the women said that they were drugged.

0celo7

They did, but he did not admit that.

At least, I don't think he did.

I haven't been paying much attention to it -- Cosby is before my time.

Kyle Kanos

The odd choices of formatting from new users never ceases to amaze me.

0celo7

@KyleKanos link?

Going to the LoC.

I'll wait for your link

Kyle Kanos

physics.stackexchange.com/posts/193409/revisions

0celo7

15:19

Why is the article title in the middle of the screen, in large computer modern?

Why is the question posed as a quote?

Kyle Kanos

Pretty much

The guy's a math PhD, apparently

Studied the Lienard equation, $x''+f(x)x'+g(x)=0$

0celo7

100 rep from being a "trusted member" I presume?

Kyle Kanos

479 rep at Math.SE

47 at MO, plus 3 gold badges?

Holy crap..he's got the Socratic badge at MO

0celo7

47?

That's nothing...

Kyle Kanos

That requires 100 questions posted on 100 separate days with non-zero score

0celo7

15:22

Huh, he has questions with like 23 upvotes

ACuriousMind

@0celo7 He has offered bounties worth 3.400

0celo7

@ACuriousMind whoops

Kyle Kanos

I was just going to say that

ACuriousMind

-1

Q: Is Quantum mechanics a Limit cycle theory?

More than 11 years ago, I was searching in the web for some materials about Limit cycles, then I found the following title in google: $$\text{Is Quantum Mechanics A Limit cycle Theory}? $$ This is the title of this article. Then I serached more and I found another title as follows:$$...

Kyle Kanos

I'm thoroughly impressed with people getting the Socratic badge on non-programming sites

We have only one user w/ a Socratic badge here

ACuriousMind

15:25

The only question bedge I might get soon is tumbleweed :P

Kyle Kanos

I'd love to find out what my next badge would be

But SE isn't updating the new profiles

ACuriousMind

If it is not tumbleweed, it'll be curious

Kyle Kanos

Well, they're taking their time with it, at least

0celo7

@ACuriousMind I could fix that

Might get an answer deletion, but I could prevent that badge

ACuriousMind

@0celo7 Then you'll grant me curious.

0celo7

15:28

@ACuriousMind You win either way!

time to go

ACuriousMind

Although I'm not 100% sure 1 upvote would count as a "good question" in the sense of curious

Kyle Kanos

@ACuriousMind Hmm, I think 1 upvote does count

I thought I had the curious badge, but it seems I don't

So now I need a question

Gaurav

15:50

@KyleKanos (b) proof ?

Kyle Kanos

Because what it works for so many words: zipper, zebra, zizzle, zombie, dazzle, zigzag, and so on.

Replace all those with the British-ized S and what do you have? sipper, sebra, sissle, sombie, dassle, sigsag, and so on

Gaurav

I'm not sure zazzy sounds so sassy.

0celo7

hello from that crazy room in the LoC

@ACuriousMind I have the U.S. government's copy of QoGS

Also, they seem to have lost their copy of MTW

@KyleKanos I have Franklin.

Kyle Kanos

Yay!

You'll probably finish it in a day

0celo7

It does not contain the answer to my redshift problem.

@KyleKanos True, it hold nothing new to me, I think

Kyle Kanos

16:02

It is meant for an introduction to GR

0celo7

Is there anything really cool in it?

Kyle Kanos

If you're already familiar with it, it's probably not worht much

20 hours ago, by Kyle Kanos

Watching him flip some indices and do some variations and get a very neat result is cool

0celo7

@ACuriousMind I have a hardback copy of QoGS

ACuriousMind

@0celo7 That's posh...mine is soft

0celo7

@ACuriousMind I'm in a building with 22 karat gold on the walls and you think the book is posh?

ACuriousMind

16:06

@0celo7 Yes.

0celo7

I ordered the second copy of MTW.

This book uses Qmechanics's $\approx$ notation...holy crap is he one of the authors?

Gaurav

5 minutes ago there were just 3 members in the room. After my comment it turned 6. Connection ?

0celo7

@KyleKanos GR is only pure without indices.

What's cool is to see an author do something without ever introducing coordinates.

skill patrol

RIP Omar Sharif.

0celo7

RIP me, @ACuriousMind I don't get the first comment immediately after (1.5).

From what does it follow that we can't invert the velocities?

Gaurav

16:19

@0celo7 Don't tell me you've watched that LoC scene from National Treasure 2 meticulously and tried to do the same, but found out that it's actually a book on the effect of sexual orientation of population on National economy instead of of the book of secrets.

0celo7

It would seem to me one would want to look at the invertibility of $$\frac{\partial L}{\partial q\partial \dot q}$$...@ACuriousMind

ACuriousMind

@0celo7 Insert (1.5) in (1.4) and think about the implicit function theorem.

0celo7

@ACuriousMind Forgot about that theorem.

@ACuriousMind You didn't answer my Qmechanic question...is it entirely ridiculous?

ACuriousMind

@0celo7 I know as much about Qmechanic's identity as you do, and it is evident that he wants to remain anonymous.

In particular because of the latter, I want to refrain from speculation.

0celo7

B-but rampant speculation is fun!

Alicia Keys

ACuriousMind

16:32

@0celo7 I didn't say it wasn't fun, I say I don't want to speculate about the identity of someone who prefers to be anonymous.

Waffle's Crazy Peanut

@KyleKanos Yeah, I'm already involved in it. Thanks :)

Gaurav

@skillpatrol I've watched just two of Omar Sharif's films, being Mackenna's Gold (a western ) and Lawrence of Arabia, and yet I can confidently say he's made of material that comes once in a millennium.

skill patrol

True that pal :'(

ACuriousMind

17:23

Dammit, writing code that makes sense is hard. Good thing I've got three weeks to get this to work.

obe

@0celo7 Guess what?

Gaurav

@ACuriousMind Since when did you get an interest in programming? Heard that your course requires little or none of it.

ACuriousMind

@Gaurav One course this semester does require it. I'm actually not averse to programming, I just haven't done it in quite a long time (since school, actually).

And now that I've started on this project, I've an ambition not to produce such unreadable garbage as we usually produce in the exercises there :P

obe

@Gaurav I still dislike you for calling me a mysterious user with insufficient rep, and making me feel awkward by posting my profile in chat.

gonenc

@obe how are you doing with carroll d20?

0celo7

17:35

@obe You're not Candian?

@ACuriousMind This book is boring

ACuriousMind

@0celo7 It is?

obe

@gonenc I was away for a week, so I am still on ch2 sadly.

0celo7

The first chapter, anyhow

I need to finish other books.

gonenc

@obe vacation?

0celo7

I'm now reading Wald on my laptop :D

I also need to figure out how to get back to my office without going above ground

obe

17:38

@gonenc I took the train to Ottawa (capital) for a week, and I didn't bring any books with me.

ACuriousMind

@0celo7 Of course the first chapter is boring, it is the setup for the rest

obe

@gonenc Though the race is still on I think.

:>

ACuriousMind

But you probably wouldn't find the other chapters more "exciting", I'd guess.

gonenc

@obe I'll start the 4th chapter tomorrow :D

0celo7

@ACuriousMind that may be so, but Wald is more exciting ATM

gonenc

17:39

@obe did you really change your user name one more time because of the probability that ocelot has blocked you?

0celo7

He didn't, that would be really dumb

obe

lol

0celo7

He has my contact info on another site

I love how my phone no longer sticks to my laptop because I have an SSD

gonenc

well I've heard that that would be a possibility :D

7 hours ago, by ACuriousMind

He apparently took 0celo7's pretending to have blocked him a bit too serious and made a new account

obe

@gonenc Did you do all the exercises?

gonenc

17:41

@obe some of them not all

there are some silly exercises like compute the riemann tensor

obe

How many pages do you read a day?

0celo7

Those are the best exercises

You're trash if you can't calculate the Riemann tensor

gonenc

which is plain calculus, which I don't like doing and make my computer do it for me, which can also calculate the riemann tensor by itself without my intervention

@obe dunno I don't count :D

0celo7

If you can't calculate it by hand, you're trash

ACuriousMind

<-----trash

gonenc

17:44

@0celo7 that is just plain f*cking calculus

obe

I'm trash too.

gonenc

@ACuriousMind count me to that team too

0celo7

If you can't calculate the Riemann tensor in one dimension in your head, you're trash

gonenc

@0celo7 at least my computer isn't trash

ACuriousMind

^lol

gonenc

17:44

@0celo7 nice try

0celo7

@gonenc at least I have more than 4 pixels

What nice try? Can you calculate it?

gonenc

@0celo7 wat?

0celo7

There is no what

obe

@gonenc What else are you reading?

gonenc

@obe nothing atm

Gaurav

17:47

@ACuriousMind Oh, that's interesting :D

0celo7

Wow, no one can calculate the Riemann tensor in one dimension...sad

gonenc

@0celo7 what is with pixels?

0celo7

@gonenc you have four

gonenc

@0celo7 dafuq?

obe

@0celo7 Is this a riddle?

ACuriousMind

17:48

@0celo7 I don't get it either.

0celo7

I can't see the references

gonenc

@0celo7 there is no goddamn riemann tensor in one dimension is goddamn zero

0celo7

@gonenc ok, you're not trash

obe

fourpixels.net

gonenc

@0celo7 I still don't get it with pixels

ACuriousMind

17:50

@0celo7 All references are to your saying that gonenc has four pixels

@Gaurav What? That I want "readable" code?

0celo7

1366x768 is like 4 pixels

Donald Trump has that as a toilet control monitor

Now I have to get back to my building

gonenc

@0celo7 at least I don't own a WC(=Windows Computer)!

0celo7

I don't either

gonenc

@0celo7 BS!

ACuriousMind

You're running Windows on a Mac. That's even worse.

0celo7

17:52

Sure

I'm actually running OSX on a Mac right now

So screw all of you

gonenc

@0celo7 the thing is very simple if(the computer has a windows in one of its partitions == ture) then(you own a WC)

btw I shamelessly stole the WC acronym from Stallman

anyhow gotta go

ciao

obe

I found a theory that describes the 4-pixels riddle.

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