The h Bar

^

Seriously.

We need you ACM.

I wasn't even away a day :O

I need you.

Seriously.

12:04 AM

^ he really does.

user54412

@Danu I'm slowly working through that chat, but I can already tell there are some good points. I think most working scientists don't consciously appreciate the web of knowledge point of view he alludes to. And too often in schools people are taught such a dumbed-down "scientific method" they actually think we test individual hypotheses in isolation, one at a time.

Yes I need you to tell me if there is any way to make Riemann-Lebesgue stronger.

$f\in L^1$ is too much.

@0celo7 Feed it steroids, maybe?

@ChrisWhite It's so nice. I'm reminiscing about my philosophy of science, and hitting myself over the head that I didn't bother to apply the Popperian principle of falsification to falsification itself! Arrrgh!

user54412

@0celo7 Use HM04?

12:05 AM

@obe One hour, then no.

@ACuriousMind not bad

@ChrisWhite terrible

$L^1$ really isn't so strong, man

What do you care anyways? :P

@Danu ...but that's a standard counter to it!

@Danu Weinberg.

@ACuriousMind :: pounding of head intensifies ::

@ACuriousMind Seriously, there are no good Heidelberg stories that every student knows about?

12:07 AM

@0celo7 None that I am allowed to tell.

lol

also @0celo7 you are rapidly approaching stalker level

@0celo7 It gets easier if you tell us what we can assume about the function

@Danu how so

There's a professor here who did his PhD at UH.

@0celo7 Your previous question was... interesting :P

user54412

Seeking to apply principles to their own frameworks seems like a pretty dangerous thing to do. Set theorists and other... axiomists?... learned this lesson last century.

12:08 AM

@0celo7 Let's discuss it later this week if I still need to, I'm just being lazy in learning it properly.

@ACuriousMind It's smooth.

@ChrisWhite Yeah, "it's turtles all the way down"

@ChrisWhite That's the standard counter to the standard counter ;)

^^I actually referenced that quote in the final sentence of my thesis

user54412

@ACuriousMind I don't even know if that supports or refutes my position!

12:09 AM

I modified it to "It's initial conditions all the way down!" (which I think is also kind of true)

@Danu My RA has Jay-Z albums and posters all throughout our hall.

Also, axiomists sounds like a nice group :D

user54412

@Danu And you still think cosmologists are right in believing they are on the cusp of the One True Initial Condition? ;)

@0celo7 Neat

@ChrisWhite No, that pushing that boundary is the only thing that we can hope to do.

Initial conditions for inflation sounds nice :)

@Danu Also Yeezy and some other rappers I'm not fly enough to listen to.

12:12 AM

@0celo7 You ain't no fly-ass pimp?

It's kind of nice to be back here :3

No I'm pretty white and bitches don't give me they money.

The Offspring - Pretty Fly (For a White Guy)

►

Have you visited the Fort? @0celo7

My majestic bookshelf has been reduced to rubble.

Kinky sheets :)

12:14 AM

Not sheets, that's a blanket.

Many a PSE post has been written under it.

@0celo7 A general smooth function does not have a Fourier transform for which it is meaningful to speak of the value at infinity. (e.g. the Fourier transform of a constant function is not a function, as you might know)

user54412

@Danu So Sisyphus's story is that of all science, struggling to achieve the unattainable because it is the only option?

4

^Yes.

@ChrisWhite Beautifully put

@ACuriousMind The Fourier transform of $f(x)=c$ is just $c\delta(t)$...looks like a function to me.

12:16 AM

^seems legit

The pothead agrees.

user54412

^ trolls

Talked to some physics profs today.

Experimentalists.

@0celo7 You're just jealous of my free spirit :)

12:18 AM

My roommate can't remember his school password, I don't think he will be receptive to my lessons.

How old were you when you first tried it @Danu?

kinky

"I don't think he will be receptive to my lessons."...sounds a bit strange

@ACuriousMind The plan was to share the Weinberg knowledge.

@skullpatrol Take a guess?

12:21 AM

13?

@Danu 13

@0celo7 Share physics knowledge with your freshman roommate? Boy, you know how to party.

Silly 'Muricans

@ACuriousMind I do!

I can never remember where @skullpatrol is from

16?

12:24 AM

@skullpatrol More like it

Final answer @Danu

:)

:)

:(

:(

12:25 AM

there's something about inhaling something that is burning that is just nope

Very few people realize the impact decriminalizing drugs has: It's just not even a cool thing to smoke weed over here.

is/was

@0celo7 Not the only way, as I'm sure you know

¯_(ツ)_/¯

@Danu brownies?

12:26 AM

@0celo7 Anything with fat to dissolve the active substances in

@Danu frozen pizza?

@ACuriousMind Please give me something from UH!!

@0celo7 ...with butter?

Hash is intense.

Depends on what kind... There's good, bad and everything in between (and beyond).

Danu erry day: youtube.com/watch?v=OniEP10QvsY

I should order my mouse.

12:27 AM

2 mins ago, by Danu

Very few people realize the impact decriminalizing drugs has: It's just not even a cool thing to smoke weed over here.

You'll probably see a lot more weed smoking in college than me

That's one annoying song, by the way

A: Does geodesic incompleteness in Penrose-Hawking theorems imply curvature blow up?

it's awesome in GTA5

GTA5 is just such a good game

@ACuriousMind I'm surprised you did not comment on him saying matter = nuclei + electrons.

-2

Is there any extension of the theorems where the conclusion of the theorem is curvature blow-up rather than geodesic incompleteness? No. Remember that spacetime is an abstract 3+1 dimensional mathematical space where we plot motion through space against time, which is in essence motion through s...

I thought there was no motion in spacetime...

@0celo7 Hm, well, almost all matter we encounter is nuclei+electrons, isn't it? So I'll let it slide ;)

@ACuriousMind ::grabs a fist full of dark matter and throws it at Heidelberg:: suck on this

@0celo7 Closely reading, it's consistent with his other statements, he always says there's motion through space, but not spacetime.

Still a completely rubbish answer to a question about geodesical incompleteness, though

he keeps gaining rep

12:40 AM

Good night peepz

night

@0celo7 Bah, dark matter. I prefer the WIMP model - weakly interesting massive particle.

@ACuriousMind at first I was upset that you thought I didn't know what a WIMP is, then I saw it and chuckled

@ACuriousMind your mom is a WIMP

@0celo7 :)

@0celo7 :(

damn. I want to order this mouse but I know I should first make sure I can actually get mail

@ACuriousMind ok, is there like a really pretty building or something in UH?

pls

12:49 AM

@0celo7 Most of the university buildings are really ugly, if you ask me

:(

what the heck

is there like a really crazy janitor or something that's been there for 20 years?

a ghost cat

etc.

Well, I think everyone knows the guy who prepares the experiments for the experimentalist lectures, but he's not crazy or something

who are the really famous lecturers that Lang might know

Y'know, if I were malicious, I'd just invent some story now

@ACuriousMind but you're not :)

12:52 AM

@0celo7 I have no idea who was lecturing here when that guy was here

@ACuriousMind are UH dissertations online?

if no, can UH students get them?

@0celo7 Not if the guy who wrote it didn't put it up somewhere, I think

maybe he talks about the ghost cat in his dissertation

lol, why are you so desparate to connect to this guy through some irrelevant trivia?

Also, how do you know about the ghost cat?

@ACuriousMind what does Study of Physics, diploma degree mean

is that MS/BS

took him 6 years

12:56 AM

No

oh, he teaches health physics

what is that

Diplom was the type of degree you received at a German university before we introduced the Bsc/Msc degrees in order to comply with the Bologna process uniformizing (or rather, meant to uniformize) the degrees in Europe

It's roughly equivalent to a MSc, but many believe it is actually slightly better.

> Radiation quantities, limits and risk assessment, external and internal dosimetry, biological effects of radiation, radiation detection, radiation interactions and decay, applications.

ehh, no

boring

@ACuriousMind I know many things about where you live

@0celo7 That sounds like a threat :O

@ACuriousMind only if you want it to be

Ok, his students are doing really boring stuff too

it would be nice to know the only German professor in this place but he's not very interesting

1:01 AM

You mean his research is not very interesting.

(to you)

his and that of his grad students

@ACuriousMind I'm never wrong.

::muffled laughter::

user54412

^^ that comment is so being bookmarked by ACM, to be referenced many months from now at just the right time

@ChrisWhite I don't see why

@ACuriousMind what's funny

@0celo7 Oh, nothing.

1:07 AM

@ACuriousMind so why the laughing

I'm just a cheery kind of guy :)

aha, found the resident particle theorist

> Neutron Scattering Society of America, Member, 1999 – present

lol

holy crap his CV is 89 pages

@ChrisWhite One could also now mark your comment to cite it directly after I bring my citation.

there's a good chance he has read Weinberg. maybe.

89 pages? That's a marathon vitae, not a curriculum.

1:14 AM

@ACuriousMind well when you have 160 articles and 300 talks

1:55 AM

chat died

@ChrisWhite what is the difference between a "nuclear astrophysicist" and a "theoretical nuclear astrophysicist"?

user54412

@0celo7 Well, the former could be experimental, in the sense of running experiments to get nuclear branching ratios and cross sections with the goal of applying them to astrophysics.

@ChrisWhite @KyleKanos does "Anthony Mezzacappa" ring a bell? (he's the/a local supernova and computational astro nut)

user54412

For example, when modeling stars, the underlying equations are really simple, and you can do a lot with 1D models. But you need accurate opacity and nuclear data to input into the model, and enormous effort goes into tabulating lab/theory results for stellar codes.

I see

user54412

Someone who works with cosmic ray detectors might also label themselves a nuclear astrophysicist?

user54412

2:02 AM

@0celo7 Yes, but I can't place it.

aha there is a string guy here

he works on holography

user54412

Every department has a string theorist -- they're pretty cheap after all, without needing "lab space" or "the computing resources of a medium sized nation state"

lol

arxiv.org/a/siopsis_g_1.html

pretty prolific

it's perfectly normal that I'm stalking these profs, right?

user54412

@0celo7 More normal for people starting grad school, perhaps. But not too weird.

I'm not sure I know every prof that's here even now. Then again, I'm lazy.

2:06 AM

I need to find the professors who can (1) explain group theory (2) explain Weinberg

user54412

@0celo7 Now I remember. His name comes up pretty often in our weekly supernova journal club.

if there is an intersection, that would be awesome

@ChrisWhite cool

user54412

I would suggest Weinberg, but he probably doesn't satisfy (2)

considering Townsend is a member of a group which has a Feynman diagram as their logo, he might know some field theory

and I've met him

user54412

btw, I have never in all my year met a physicist who could explain ~~group~~ representation theory

2:08 AM

(not the string theorist)

(the cosmic rays guy)

user54412

if you want groups, take abstract algebra; for representations, you might have better luck with physical chemists

@ChrisWhite I am planning to take algebra, but I don't know if I'll have time for two semesters

:(

user54412

it's called auditing :)

@ChrisWhite I know a prof here who can. The other physicists (even the string theorists) call him a mathematician, and the mathematicians call him a physicist. He's nowhere at home.

@ChrisWhite ACM has tried

valiantly

he always rants about cohomology and functors though

2:10 AM

::hears cohomology, perks up::

@ChrisWhite does he know you

@FenderLesPaul I am scouring the faculty for people who can explain Weinberg

it might be an impossible task

user54412

@0celo7 Almost certainly not. I'm not actually in supernovae (anymore).

FenderLesPaul

Have you tried the English department?

no German math professors

ok, there are two guys who have group theory listed under research

@ChrisWhite Though in auditing you have to pay tuition.

2:13 AM

"quantum algebra" @ACuriousMind what

If they are math guys, you want Lie groups and representation theory

@ACuriousMind well they have "geometric group theory"

they could know something about groups

@0celo7 Yep, "quantum groups" or "quantum algebras" exist. I'm not sure how related to actual quantum physics they are, though

there's a guy who has "abelian groups" as a research topic

ok all of the group people are also geometers and topologists

@ACuriousMind "REMUS NICOARA, (Director, Undergraduate Honors Program), Ph.D. UCLA, Functional Analysis and Operator Algebras - subfactor theory, non-commutative ergodic theory, actions of groups on von Neumann algebras, Hadamard matrices" seems interesting

that seems like the stuff you hoped to learn in that class :p

@0celo7 Yes, yes it does

@0celo7 Yes, yes it does :D

user54412

2:17 AM

@obe For full-time students? I can't imagine a professor saying "no, you can't sit in the room unless you sign up with the registrar."

user54412

"subfactor theory"

@ChrisWhite Auditing is not the same as sitting in lectures.

user54412

@obe we must have different definitions then

OH MY GOD MY SCHOOL USES WEINBERG

@0celo7 I would've been content with a tiny bit of operator theory, though :/

2:23 AM

@ChrisWhite The only difference is that the auditor is registered and can participate in the class while the other can only listen.

@FenderLesPaul George Siopsis. We need to get him in a Skype call.

This differential geometry guy has a BS in English.

@ChrisWhite this seems to be the undergrad analysis text

user54412

> What is the title of this book intended to signify, what connotations is the adjective “Postmodern” meant to carry?

NeuroFuzzy

Does electrodynamics+abraham-lorentz force alone imply the "mass increase" of a system of, say, two positive point charges w/ their associated interaction energy? I've never actually thought to work that out...

@ChrisWhite graduate algebra is Hungerford

user54412

@0celo7 I used that too. Plus Lang, which is the same but 3 times more verbose.

2:38 AM

@ChrisWhite in grad school?

undergrad is Artin, as said earlier today

@ACuriousMind functional analysis is not being offered this semester D:

NeuroFuzzy

@ChrisWhite Hungerford? Soooo where is it applied in [mathematical] physics?

user54412

@0celo7 grad-level as an undergrad

@NeuroFuzzy can't you just learn math for math's sake

@0celo7 :O

@ChrisWhite yeah that's what I'd do

user54412

2:39 AM

@NeuroFuzzy never said it was -- I studied pure math for math's sake as an undergrad

@ACuriousMind (means I can't check the book)

NeuroFuzzy

@0celo7 Yesssss was just assuming

I have to find REMUS NICOARA

he will be able to tell me things

@ChrisWhite does that analysis book look alright?

@alarge the graduate PDE book is Evans

What does it actually mean when you say "The book for X is Y"? Does it mean the lecture consists of the lecturer just reciting a chapter of Y? Does it mean the course is loosely structured like Y? Does it mean the homework assignments come from Y?

no clue

I need to talk to the lecturers

I have their office numbers

the riemannian geometry class is a lot of Morse theory, @ACuriousMind what is that

user54412

2:45 AM

@0celo7 Well, it's yellow, so that's good.

there are two books, one of them is completely on that

user54412

ToC seems complete I guess

user54412

Style -- umm, that's interesting. Just definitions, lemmas, and theorems.

@0celo7 Roughly, the theory of critical points, which has application e.g. in generalizations of the method of steepest descent for evaluating integrals.

user54412

I've seen condensed lecture notes with more remarks and qualitative observations

user54412

2:47 AM

Also very shorthand and symbol heavy. Exactly the way new math students like to write and what you're told to not do professionally.

@ChrisWhite please elaborate

user54412

do you have the book?

nope

I haven't figured out the library yet

might do that tomorrow