The h Bar

user228700

13:00

Do you read all those books you need to read this time of day?

John Rennie

Good. On that note I'm off to get lunch, though not radioactive bananas.

user228700

Oh, it's lunch time. Okay, I'll catch you tomorrow. Bye!

ACuriousMind

@Danu I think becoming a moderator won't make anyone, personally, "more effective", except if you make very liberal use of the unilateral votes which is likely to upset people. But we don't elect moderators because we want certain people to be "more effective", we elect them because someone has to deal with the issues that aren't suited for community review. I think people get this impression that mods are supposed to be more "effective" because many mods are simultaneously high rep users...

...so they tend to believe there is some sort of intrinsic relation between the two, while they are just both results of spending enough time on the site to a) be popular enough to be elected and b) have enough answers/questions to gather a lot of rep

user228700

@JohnRennie There's a great video about this(somewhat...Vsauce tends to go off-topic in weird but wonderful and mind-blowing ways) by Vsauce:

user228700

You Can't Touch Anything

►

user116211

13:06

@DavidZ: The community Election post is featured, right?

user116211

But the sidebar is still showing otherwise.

user116211

I know the side-bar is pretty late sometimes too get updated...

ACuriousMind

@JohnRennie [smartass mode on] Actually, the proper intensifications of NB would be NM and NO

user116211

But this time, I've noticed in the morning, the post was featured, but in the noon, it was not; just quite an hour ago, it was featured in the side-bar; but just now, it is not there... it's bothering.

yuggib

@ACuriousMind What I understood is that technically the salary is related almost exclusively to the teaching activity, and almost not to the research activity for PhD students and postdocs.

user116211

13:08

yuggib

In the usual contracts given by universities. If the funds come from the DFG or some other funding agency then it is different

ACuriousMind

@MAFIA36790 I think the sidebar is confused because it also instantly became a "Hot Meta post" in its own right, so it doesn't put it inot the featured column as long as it's still hot, but that's just a guess

@yuggib Hm. Maybe it depends on the university and how many people it has available to teach

yuggib

@ACuriousMind It's possible. I know only about Stuttgart and LMU

ACuriousMind

Because I think the amount of mandated teaching activity for a PhD/postdoc here does not suffice to justify the salary (there are strict rules for how much public employees are paid)

Then again, I don't know how many of them are actually employees, and which ones have fellowships from a graduate college or other scholarships

yuggib

I have no great experience either. Let's say that I also think that the salary is more than good enough to cover the teaching activity

But the PhD students I met there always complained they had too much teaching to do

(the ones who were not paid with DFG funds)

ACuriousMind

13:14

@yuggib If I ever meet a PhD student who's not complaining about some aspect of their situation I'll know something is horribly wrong.

yuggib

yeah, the PhD is usually made for complaining and being bullied by a professor :-D

user116211

@ACuriousMind ohh, maybe; but it was there both as the featured as well as the Hot Meta posts quite a while ago....

user116211

@yuggib Is the teaching part mandatory?

yuggib

@MAFIA36790 in germany very often it is mandatory

in other countries it depends

user116211

okay.

yuggib

13:21

usually is optional, but people want to do it because it means extra money

user116211

ohh.

yuggib

@ACuriousMind However you always complain in academia: we've already said of PhD students; then when you're postdoc you complain you can't find a tenured job; when you're associate professor you complain there is no money for research, and the students are low-quality; when you're a full professor you complain about the overall state of the world.

user218912

@ACuriousMind hello

ACuriousMind

heyhey

user218912

@ACuriousMind can you elaborate on this please?

user218912

13:30

12 hours ago, by ACuriousMind

@IceLord 1. You can only impose gauge conditions on massless vector fields. 2. You impose it usually by adding a Lagrange multiplier for it.

user218912

I know what a lagrange multiplier is but I don't know how it imposes the gauge condition.

ACuriousMind

Tell me what a Lagrange multiplier is, then

user218912

I only know it in the context of optimization and lagrangian mechanics.

ACuriousMind

That's not an answer.

user218912

okay so lagrange multipliers basically allow you to optimize a function with a constraint

user218912

13:34

by writing out the lagrangian for the function and constraint and multiplying the constraint by a multiplier (lagrange multiplier)

0celo7

@ACuriousMind Aha

ACuriousMind

@IceLord Aha. Now what is the difference between that and imposing a gauge condition?

0celo7

What's this style of teaching called

I like it

ACuriousMind

@0celo7 A cheap knock-off of the Socratic method, I guess :P

user218912

@ACuriousMind a gauge condition is a constraint?

0celo7

13:35

@ACuriousMind Interesting. Who came up with it?

ACuriousMind

@IceLord Is that a question or a statement?

@0celo7 Some Roman, probably.

0celo7

@ACuriousMind It's a quatement.

user218912

@ACuriousMind I see, but how does a lagrange density with a lagrange multiplier in it look like?

ACuriousMind

@IceLord I don't understand the question

@0celo7 ::faint chuckle::

user218912

you said You impose it usually by adding a Lagrange multiplier for it., adding it to what?

user218912

13:37

the lagrangian?

Bass

@ACuriousMind So the $\xi$ in the $\int DA\,\mathrm{exp}((i/2\xi)\int dx (\partial A)^2)$ term is a Lagrange multiplier? Never thought of it in this way.

user218912

@ACuriousMind is the lagrange multiplier in the EOM or the lagrangian?

user218912

sorry i'm misunderstanding.

0celo7

why are you doing gauge theory in week 2?

user218912

how is this gauge theory?

user218912

13:40

(I am not familiar with gauge theory so idk)

ACuriousMind

@IceLord I'm not going to tell you what to write down. You know how to use a Lagrange multiplier to impose a constraint, and a gauge condition is a constraint. There's no trick here.

user218912

@ACuriousMind I'm not asking what to write down!

user218912

I just don't know where to write it.

user218912

it imposes a constraint on the lagrange density or the field equations?

0celo7

lol prof straight up told a dude in class he couldn't read his handwriting

ACuriousMind

13:43

@Bass It is.

0celo7

@ACuriousMind Bad ACM.

ACuriousMind

At least I catch most of my errors within the 2 minute delete window :P

0celo7

Even I knew that one was wrong

I think!

ACuriousMind

I confused myself because the gauge condition is $\partial A = 0$, not $(\partial A)^2 = 0$, I overlooked the latter implies the former :/

0celo7

Huh?

user218912

13:45

@ACuriousMind can you link me an article that describes how gauge conditions and lagrange multipliers relate?

0celo7

Put in indices

user218912

please?

ACuriousMind

@IceLord What is the difference between "imposing a constraint on the density" and "imposing a constraint on the field equations"?

user218912

@ACuriousMind oh

user218912

idk

user218912

13:45

should be the same then?

ACuriousMind

@IceLord Then what did you mean by that question?

user218912

constraint on the action = constraint on the density = constraint on the eom?

ACuriousMind

I don't know what either of those terms mean, that's why I asked you what the difference between them is supposed to be.

user116211

@ACM was right; the sidebar was confusing between the featured and Hot Meta Posts:

user116211

user218912

13:49

hey that's me!

user218912

:D

user218912

@ACuriousMind alright so is the lagrange multiplier in the density a field or a number? idk if this is a dumb question.

user116211

@IceLord yeh; for sure ;)

ACuriousMind

@IceLord Why don't you try whatever you think is right?

user218912

@ACuriousMind if my lagrange density is $\mathcal{L} = -\frac{1}{2}(\partial_\alpha A_\beta (x))(\partial^\alpha A^\beta (x)) + \frac{1}{2}(\partial_\alpha A^\alpha (x))(\partial_\beta A^\beta (x)) + \frac{1}{2}\mu^2 A_\alpha (x) A^\alpha (x)$ is the last term a lagrange multiplier?

ACuriousMind

13:58

It's usually called a "mass".

user218912

yes

user218912

but is it a lagrange multiplier too?

ACuriousMind

Well, what do you think?

user218912

since my prof never talked about how lagrange multipliers work for fields.

0celo7

@ACuriousMind Whoa.

TIL QFT is Catholic.

user218912

13:59

@ACuriousMind no.

user218912

is the field $A_\alpha (x)$ a lagrange multiplier then?

ACuriousMind

@IceLord why not?

@IceLord why would it be?

user218912

nvm.

ACuriousMind

that's not an answer.

0celo7

@IceLord I'm jealous, you're getting all of ACM's attention

:(

user218912

14:03

I know and I'm not using it effectively.

user218912

@ACuriousMind just ignore me, I'll look at this problem again when we do field theory in class.

ACuriousMind

@0celo7 You should be proud you don't need it that much these days anymore instead :P

Or proud that you often do stuff where it wouldn't help you anyway, if you prefer

0celo7

@ACuriousMind I do need help, but you can't give it :/

ACuriousMind

@0celo7 Yeah, that's my second variant, then

0celo7

Kobayashi-Nomizu quote Steenrod but the definitions are different.

I need to read the original paper

ACuriousMind

14:05

@IceLord Okay, but let me say that it's a bit frustrating that every time I ask you a question you either answer it without giving any reasons for why that's your answer or you don't answer it at all. I'm trying to get you to do the steps yourself instead of just telling you, but you're making it rather difficult.

user218912

@ACuriousMind yeah... it's because I haven't learned it yet and don't have a feel for it. though I really appreciate you doing that.

0celo7

@ACuriousMind I would still like to discuss things with you, but if you don't find it interesting I understand.

Me a year ago would be bored by me now.

ACuriousMind

@0celo7 If it's more Riemanian geometry/isometry groups, I'm indeed not really interested :|

0celo7

Right now it's group actions on metric spaces. Isometry group is a long way away.

And compact open topology. Not very fun, I admit.

ACuriousMind

Mhhh, I don't know much about general group actions, and nothing about the compact-open topology.

0celo7

14:13

Me neither. I need an old fashioned general topology book like Kelley or Dugundji.

For some reason the newer ones don't discuss it.

Neither does Bourbaki.

user218912

brb class

0celo7

@ACuriousMind I also have to figure out what things I know about group actions are about Lie group actions.

yuggib

@0celo7 bourbaki discusses the compact open topology

simply it is not called in that way

it is the topology induced by the uniform structure of compact convergence

Secret

14:28

@IceLord Don't ask me about actual QFT maths stuff yet, because I know basically nothing of it as I am still in quantum

John Rennie

@ACuriousMind you've made the mistake of confusing me for someone who isn't an anal retentive nerd :-)

3

Q: Emphatic form of nota bene

I suppose this is really about Latin, but since there is no Latin SE an answer using modern Italian would be welcome. In the days of my youth we had a Latin teacher who used the phrase nota benissime when he wanted us to take extra special notice. I may have misremembered the phrase, and in any ...

translation

ACuriousMind

lol

I bow before the master

btw, there is now a Latin Language

0celo7

@yuggib Wait...do you know about the compact open topology?

John Rennie

@ACuriousMind it's really a Dog Latin Stack Exchange I need. I wonder if there'd be enough support to start one :-)

0celo7

Dog Latin?

ACuriousMind

14:44

Not to be confused with the much more aristocratic Cat Latin.

0celo7

You and your cat superiority complex

@ACuriousMind The dog is clearly superior to the cat

@ACuriousMind I will vote for you if you change your avatar to a dog.

ACuriousMind

15:04

@0celo7 I'm no sell-out :P

yuggib

@0celo7 not so much

but I know that for all uniform spaces it coincides with the uniform structure of compact convergence

and that a thorough discussion of uniform spaces and induced topologies can be found in Bourbaki

Obliv

@0celo7 what would the gm in $\frac{cal}{gm \cdot ^{\circ}C}$ mean

gm should be a mass since this is specific heat

0celo7

@yuggib Ok...thanks.

I found a paper which says that what I need is "well known"

yuggib

probably it is

0celo7

"it appears in several texts on general topology"

Obliv

15:11

ok why would they use $gm$ to mean grams

that's just stupid.

0celo7

@yuggib My topology prof had never heard of it

He's famous enough to have a wiki page, fwiw

yuggib

@0celo7 in french school uniform spaces are well known

0celo7

Which Bourbaki should I be checking?

Xasel

Hey everybody here How was yar day

yuggib

@0celo7 general topology, chapters 5-10, chapter 10 on function spaces

first section on the uniform structure of $\mathfrak{S}$-convergence

0celo7

15:15

How does one get that book

yuggib

the uniform spaces in general are in General topology 1-4, chapter 2

0celo7

it's not on Springer

yuggib

I have only the french version of both

0celo7

frig

@yuggib have you heard good things about Dugundji?

yuggib

@0celo7 never heard of it/him

I have not an extensive knowledge of general topology

and I use bourbaki as a reference

0celo7

15:20

I don't need an extensive knowledge, I need something that's in English (or German)

Danu

@ACuriousMind The point for me, mostly is actually to realize that it will make one much less effective at helping out with certain aspects of the site. It was something I hadn't thought about much before I became a HSM moderator.

yuggib

springer.com/us/book/9783540642411

0celo7

you said chapter 10

yuggib

springer.com/us/book/9783540645634

both are in english also apparently

your library should have them

maybe they're also on springerlink

0celo7

I cannot download the second one

Obliv

15:23

holy crap how many pages is that book @yuggib

yuggib

I don't have the subscription here

I can't try

0celo7

They have the French version wtf

damn library

yuggib

@Obliv not so long

0celo7

@yuggib it won't even give me a springer link link

yuggib

the first one is on springerlink right?

0celo7

15:24

> Title: General topology
Uniform Title: Topologie générale.
Author: Nicolas Bourbaki
Subjects: Topology
Description: [1] Chapters 1-4 -- [2] Chapters 5-10.
Translation of: Topologie générale.
Includes bibliographical references and indexes.
Related Titles: Series: Bourbaki, Nicolas. Eléments de mathématique. English.
Publisher: Berlin ; New York : Springer-Verlag
Creation Date: c1989
Format: 2 v. ; 24 cm..
Language: English
Identifier: ISBN 038719374X (U.S. : v. 1);ISBN 0387193723 (U.S. : v. 2);ISBN 3540642412 (softcover v. 1);ISBN 354019374X (2nd printing v. 1);ISBN 3540645632 (softcover …

Obliv

It probably doesn't go very in depth in each topic, right? Still, just section 2 goes through a LOT of algebra

0celo7

Aha!

They do have the English

@yuggib Yes.

yuggib

@Obliv what book are you talking about?

Obliv

the first link

yuggib

mmmh, they don't do so much algebra on a topology book

Obliv

15:26

oh it's in multiple books

yuggib

bourbaki are around 20 books

ACuriousMind

@Danu "Much less effective"? The only thing I see is being more cautious with close and reopen votes, and if a single user is that relevant for those processes the site has bigger issues to begin with.

0celo7

friggin $75 for Bourbaki Vol. 2

Is it worth it @yuggib

ACuriousMind

In slightly related news, I think I just dupe-hammered a HNQ :P

Xasel

Hey guys I have confuson

yuggib

15:27

@0celo7 I have all the bourbaki books, so for me they're worth ;-P

Xasel

Weall have been taught about conservation of momentum

yuggib

still better if you take it from the library first

and then decide based on your needs

Xasel

but is there any proof regarding that momentum is conserved

0celo7

@yuggib Yes...

yuggib

all the convergence stuff is done by filters in bourbaki

0celo7

15:28

I need something better than Munkres for general topology

Xasel

or why the momentum is conserved?

0celo7

My prof recommended Dugindji

but I can't tell if they have the theorem I need in there

yuggib

I don't know it

by the way which is the theorem?

just out of curiosity...

Xasel

@ACuriousMind:you have any idea about it?

0celo7

@yuggib I need: $X$ locally compact, then $C(X,Y)$ has a countable base in the compact-open topology iff $X$ and $Y$ have countable bases.

Can you please check Bourbaki?

ACuriousMind

15:30

@Xasel Most physicists consider symmetries to be more fundamental than conservation laws and refer to Noether's theorem as the underlying reason, cf. e.g. physics.stackexchange.com/q/60021/50583

0celo7

I have a paper that proves $\Rightarrow$, but I really need $\Leftarrow$.

I have a partial result from Dugundji, which I am trying to digest.

I don't care if this uses filters or nets or whatever.
I'm willing to learn all of that.

John Rennie

@Xasel conservation of momentum follows from a symmetry called shift symmetry.

0celo7

translation symmetry

John Rennie

A rose by any other name ...

See:

23

Q: How do we know that energy and momentum are conserved?

How do we know energy and momentum are conserved? Are these two facts taken as axioms or have they been proven by an experiment? This question has been in part addressed here: Conservation of Momentum but I don't see how translational symmetry implies conservation of momentum. If the reasoning b...

energy-conservation momentum

VenkiPhy6

Does anyone know of good problem books along with detailed solutions? I would like the book to be organized by topic and include a list of equations required to solve those problems so that I can read the theory behind them from my textbook and then solve them...

0celo7

15:33

but they are not conserved in GR

@VenkiPhy6 We literally have no clue what kind of problems you're looking for.

VenkiPhy6

@0celo7 I am undergrad preparing for entrance exams to graduate programs..so problems at that level...

John Rennie

@VenkiPhy6 get yourself a copy of Irodov's problems. There are numerous web sites with solutions to them.

0celo7

Btw...what is it with Indians' obsessions with problem books?

Xasel

@JohnRennie and @ACuriousMind : I couldn't make out what you guys mean by Symmetery in this conetxt lest the shift symmetery

0celo7

They seem to always ask for them

VenkiPhy6

15:35

@0celo7 ENTRANCE EXAMS with very low pass percentages...!!!

ACuriousMind

@0celo7 I think it has to do with the large importance of standardized tests for admissions?

yuggib

@0celo7 I think it is covered if $Y$ is a uniform space

Xasel

@VenkiPhy6:Russian books are way to go like L SEna Pinsky

John Rennie

@VenkiPhy6 Hmm, graduate level? Irodov is probably too simple then.

Xasel

wait a min

0celo7

15:35

@yuggib Even better, how about a metric space?

Xasel

mirtitles.org/2013/09/10/problem-books-in-physics-taking-stock

^Completely legal and in public domain

yuggib

@0celo7 then it is covered since every metric space is a uniform space

VenkiPhy6

@JohnRennie Exactly!

0celo7

@ACuriousMind Ok, so you have noticed it too?

@yuggib Ok can you give me the theorem number?

Xasel

@VenkiPhy6:See above link/website there you may find something of your concern

ACuriousMind

15:37

@0celo7 Yes. It's the second most noticable thing right after the "doubts"

0celo7

I don't understand the doubt thing.

When I translate "I have a question" in Google, it returns "I have a question"

John Rennie

@Xasel You need to understand Noether's theorem, and to be honest it is hard. I forget where you've got to in the educational system, but even most physics undergrads would struggle - at least first/second years.

0celo7

Not "I have a doubt"

ACuriousMind

@0celo7 It's linguistic evolution, these things rarely make sense

Xasel

hahaha...@0celo7:You guys are confuse by Indian english

many indian use words: doubt

for asking pupose

there are also other lingos like :prepone,etc..

@JohnRennie:well to say only at high school lvl..at par with Kaumudi

Hereby indian is being refere toSE Asia Indian rather than Native Indian of AMerica

John Rennie

15:40

@Xasel In that case you'll need to take Noether's theorem on faith. To be honest I don't really understand it either so you're not alone.

0celo7

@JohnRennie I can explain it to you later if you want

It's an integrability criterion for ODEs at heart

Xasel

what space homogeneity 'relation with conservation of momentum

yuggib

@0celo7 well, they use a slightly different language and so there is not exactly a theorem number to see that directly

DanielSank

@JohnRennie Noether's theorem isn't that bad is it?

John Rennie

@0celo7 Let me get back to you on that one

DanielSank

15:41

You need only calculus.

I think.

Xasel

As described by PhysSE forum

0celo7

@DanielSank Correctomundo

DanielSank

@0celo7 So what's the big deal?

0celo7

It's trickier on a manifold

yuggib

@0celo7 maybe it is better if you find a text that discusses the compact-open topology more directly

0celo7

15:41

@yuggib Probably. Any suggestion?

@DanielSank I didn't say there was one, did I?

DanielSank

nope

yuggib

@0celo7 not really

0celo7

It's @JohnRennie you should be talking to

John Rennie

@DanielSank From time to time I go through the maths and it all makes sense. Then I lose interest and in a few months find I've forgotten the details. The thing is that I only need the result not the proof of the theorem, so I have little motive to commit it to memory.

ACuriousMind

@DanielSank I think @JohnRennie is just afraid of Lagrangian mechanics ;)

John Rennie

15:43

I've never been very action orientated

DanielSank

heh

John Rennie

God that's a rubbish pun

DanielSank

@JohnRennie Yeah, why bother memorizing proofs?

Xasel

hahah..though youar into RAF

ACuriousMind

@JohnRennie Par for the course around here, then :)

John Rennie

15:44

And I thought physicists were masters of wit and humour ...

0celo7

Why would you think that?

Weird.

Xasel

There are...thought their humours is a secret one

user116211

@Xasel SE is not forum

Xasel

@MAFIA36790:Why are you telling me this?

ok I get it once I mistakeingly referred it to as forum

ACuriousMind

"once"...that was less than 10 minutes ago!

John Rennie

15:48

Sigh ...

-2

Q: Is it a collisssion?

Q:if a boy is walking on road and see's a snake,he ran back , Now does collision occurred between snake and boy? I am so confuse can anyone please help?

collision

DanielSank

^ Great title.

John Rennie

@DanielSank Yessssssssss

user116211

@JohnRennie The body content is speechless ;(

David Z

ooh, it's almost chat session time

ACuriousMind

@JohnRennie Now that comment is a textbook example of "not constructive" :P

Xasel

15:50

@ACuriousMind:oh kindly spare me

DanielSank

@JohnRennie I really don't think you should have made that comment though.

Xasel

I forgot about that

so lets say twice

DanielSank

@ACuriousMind flagged as such

Obliv

I'm so mad @johnR I literally couldn't print-screen in time

user128101

@JohnRennie, Hi , did you understandmy concerns?

Obliv

15:51

as I pressed it the post was no longer viewable ;(

John Rennie

@DanielSank yes, it was a childish moment. DavidZ has now deleted my comment and indeed the question.

DanielSank

@JohnRennie :D

John Rennie

@Obliv it's been deleted

@user104372 Hi.

0celo7

@ACuriousMind You're in luck

By book on geodesic balls has arrived

David Z

@JohnRennie it was a little funny though

ACuriousMind

15:52

Seriously though, "I HATE STACK EXCHANGE" doesn't really make SE users extend goodwill towards you

@0celo7 Finally something so you can handle your balls!

David Z

Anyway. Anyone have anything to put on the agenda for the chat session? We've already got heather's question about the goals of the site, and the upcoming election, as topics

John Rennie

@user104372 You're quite correct that an isolated neutron will beta decay into a proton, electron and anti-neutrino.

VenkiPhy6

@0celo7 I always wonder why EVERYONE is NOT obsessed with problem books! Coz I will read a good standard text(Klepner, AP Frech, Zemansky...) then try to solve problems that are given there. But I will get stuck and will have nowhere to go!! Most times solutions manuals aren't available for these books. So the only alternative seems to be a problems book with solutions so that I can continue reading and not waste time. I wonder...what do you in such situations?

user128101

@JohnRennie, can the new proton be absorbet into a nucleus and beta decay?

John Rennie

And the mass of the proton is equal to the mass of the neutron minus the electron and neutrino mass and minus the electron and neutrino kinetic energy.

In principle we can take a nucleus and add the proton to it.

The mass of that nucleus will increase by less than the mass of the proton because we have to take some energy out of the system to bind the proton.

user128101

15:55

@JohnRennie, right, now that proton is 2.5 Em ligher, if it beta-decays will it lose anotther Em +?

John Rennie

The resulting nucleus, with the extra proton, may or may not be to decay by electron capture or beta+ decay. It depends on the structure of the nucleus.

ACuriousMind

@DavidZ Only other meta kerfluffle I can think of is questions with an ulterior motive, but I'm not sure there's need for further discussion on that one.

David Z

Yeah, me neither

John Rennie

Ooh we have a chat imminent don't we?

DanielSank

@ACuriousMind Please no.

user128101

15:56

@JohnRennie, right, suppose that proton now loses a positron, isn't it 3 Em lighter than the mother original neutron?

0celo7

@ACuriousMind who said that?

John Rennie

@user104372: I'm afraid this is bad timing as we have a chat session from 17:00 to 18:00 and we need to suspend other discussions for that hour.

0celo7

@VenkiPhy6 I'm not a physicist.

My problems nowadays involve a week of hell

I've got a stack of papers on my desk

ACuriousMind

@DanielSank Just bringing up options, I don't have any particular desire to talk about that either

0celo7

I don't know when I got to the point where my work involved research papers

David Z

15:57

@JohnRennie There is always the other room

Backup Room – The h Bar

A backup room for when The h Bar is busy. (chat.stackexchange....

0celo7

but it did

ACuriousMind

@0celo7 It was a username

user128101

@JohnRennie,OK, I suppose I clarified my dobt, leave a comment at your answer, thanks

user128101

I mean it is clear to you what I need to know

ACuriousMind

@DavidZ Suggesting to go to the meta room for a physics discussion while we have a chat session mainly about meta in the main room is a funny move ;)

DanielSank

15:59

@ACuriousMind yes

David Z

@ACuriousMind The irony is not lost on me ;-) but it's a naming thing

DanielSank

Notation is hard.

ACuriousMind

Oh, the h bar is helpfully informing we we're starting in 27 seconds.

DanielSank

Wow, lotsa people show up for these chats, eh?

David Z

lol yeah me too

John Rennie

15:59

Why have we just attracted an alien mod?

Backup Room – The h Bar

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