The h Bar

Sid

2:00 PM

Is the tax rate so high that you might have to lose a large chunk of your stipend?

Secret

The only thing I hate about this world: The existence of the ghosting social phenomenon

0celo7

@Sid yes, or perhaps all of it even

Secret

Adolf Hitler is nothing compared to the social damage caused by this phenomenon alone througout the eons

(though, yes I agree it does not directly lead to deaths)

Sid

@0celo7 all of it ? WTF?

How are students supposed to survive then?

0celo7

You don’t. The GOP is killing off academia. It’s genius.

ACuriousMind

2:02 PM

@Sid Maybe they're not supposed to.

@Secret What.

0celo7

Lol

ACuriousMind

I just...can't. Can't I go a week without someone trivializing Nazi atrocities?

2

GPhys

@ACuriousMind ....no

Secret

Sorry I unreasonably exaggerated, but being a ghost victim in the past, I pretty much describing my emotions

Phase

wh...

How the fuck

0celo7

2:04 PM

The game set my settings to max

Wonder how this is gonna work

Phase

I'm all for making shitty offensive jokes but

You don't owe someone an explanation if you choose to stop associating with them

It's rude sure, but it's hardly crime of the century

GPhys

@Sid yeah, for me it's about 80%; one of my upstate friends says his tax on his stipend would be about 110%

(of the stipend)

ACuriousMind

@Secret Frankly, I don't care. The death of millions of innocents does not compare to someone being mean to you or hurting you emotionally in any way, shape, or form.

7

Secret

Well I guess my opinion will differ had I experienced WWII itself

0celo7

My god, are elephants are not that big

Sid

2:06 PM

@GPhys How does the tax become greater than the earnings? That's horrible...

0celo7

Were they larger back in the day?

ACuriousMind

@0celo7 Uh, what? AC has mammoths now?

GPhys

@Sid to be clear the tax isn't only on that money, I mean that's the percent of the received money that's taxed

0celo7

@ACuriousMind ya

ACuriousMind

@Secret It's fucking mass murder. You shouldn't have to experience murder to know it's bad.

2

GPhys

2:08 PM

@ACuriousMind I wonder if the universities do the tuition waivers as a tax benefit of their own; that would be incredibly ironic

ACuriousMind

@GPhys I had a similar thought. I mean, if no one actually pays it, that seems like the only reasonable incentive to keep it up

Phase

@0celo7 I keep hearing people call ACO an RPG

that seems strange to me, is it really an RPG?

ACuriousMind

If AC is an RPG, I'm an AI.

Phase

I could believe that @ACuriousMind

0celo7

I don’t know, I just started playing

I can’t find the damn sprint button

Phase

2:14 PM

The extra 7 dimensions give you a lot of space for processors and memory

0celo7

CAMELS

Phase

I'm a bit confused by this dual space lark now

0celo7

@ACuriousMind oh no. I hecked up. 60fps isn’t good enough any more

Phase

if $\Phi_g : V \to V^*$ is an isomorphism from a space of vector elements to a space of functions, then does that mean that if V is a vector space of functions, functions are mapped to other functions that when multiplied by elements of V, correspond to the function equivalent of the inner product? And does that mean that Bra vectors are functions?

0celo7

I’ve got to suffer until my eyes adjust

Phase

2:25 PM

Do you have ocelot eyes?

0celo7

Idk but this game isn’t very well optimized

Phase

are you surprised?

I couldn't even RUN that victorian one

They're terribly optimised for PC

The best part tho

My steam playtime on it is 14 minutes, and I tried refunding it 30 minutes after I bought it

Never got a refund

0celo7

I’m trying to Vsync at 60 but then it runs at 45

It runs at 85 without

????

Lagranian

Is this physics chat room?

cuz when I see something about gta 5 and fps

thought that net cafe

also the question which is shown their attempt was put on hold.

this site is too funny lmao

0celo7

gta 5?

@Phase I have no idea what you're talking about.

I will spell it out for you

@Phase We denote the function $V\ni v\mapsto \langle w,v\rangle$ by $\langle w,-\rangle$.

Where $w\in V$.

Phase

2:42 PM

I get that, but what I don't get is how to resolve that with what I've learnt about Hilbert spaces from Physics textbooks

0celo7

The duality statement is that given $\omega\in V^*=\mathrm{Hom}(V,\Bbb R)$, there is a unique $w\in V$ such that $\langle w,-\rangle=\omega$. Does that make sense?

Phase

Sorry, what's Hom

0celo7

This is for finite dimensional spaces.

@Phase Linear maps from $V$ to $\Bbb R$

Phase

yeah I get that

0celo7

@Phase For Hilbert spaces you have to be more careful, because the right dual is not $\mathrm{Hom}$, but rather $\mathrm{Hom}\cap\{\text{continuous maps}\}$.

Right as in "correct"

Phase

2:44 PM

Now you've lost me

0celo7

That is, you want $T:V\to\Bbb R$ both linear and continuous.

Phase

I don't really have any real analysis grounding

Im reading through a textbook of it now for the first time

0celo7

Which book?

Phase

well idk if its a book but it was the first result

ramanujan.math.trinity.edu/wtrench/texts/…

0celo7

Without a doubt the best book to learn about Banach spaces the first time is Jost.

Then Brezis for functional analysis.

550 page introduction

chirst

Phase

2:50 PM

Chirst?

Did he Dei for our sins?

So do you not recommend this?

0celo7

It doesn't do Lebesgue integration

I recommend Abbott, then Jost, then Halmos, then DiBenedetto, then Brezis.

Phase

Is this like a

"first time reading list" or a "prepare your asshole" reading list

0celo7

First time reading list.

I think it covers all of the basics of analysis.

Phase

When you say "then" do you mean reading only select chapters of each? Or complete reading of all?

0celo7

Functions of one variable, multiple variables, Lebesgue integration, Banach/Hilbert spaces, Radon measures, Sobolev spaces.

@Phase Yeah selected chapters. But over half of each.

Abbott you should read fully.

Phase

2:53 PM

So how long would all this take me?

Well, how long did it take you I guess, I'll just multiply that by two

or by ten depending on how lazy i get

This question is a wreck

The Dark Side

Joke answers anyone?

-4

A: One year into PhD, feeling lost and inadequate, Help!

You can definitely consult a psychiatrist and ask for mental health problem confirmation (my friend did that in college and was given disability arrangements). Then take break from your PhD program. But taking a break alone won't completely solve the problem, because your anxiety is still there,...

"Miracles are real. And I'm telling you, Jesus is the answer."

Phase

3:10 PM

Well

He's not wrong

0celo7

@TheDarkSide Some people take Jesus very seriously.

@Phase Idk, a year?

Phase

damn

And thats just real analysis?

0celo7

@Phase that includes a significant amount of PDE and measure theory

and functional analysis

it's the foundations of analysis, not real analysis

Phase

O

uh oh

i restarted my file explorer and now I dont have a taskbar

MAYDAY MAYDAY

ok i think I might have fucked something up

Giskard42

3:27 PM

@Phase Ctl-Alt-Delete, run task, explorer.exe

0celo7

remove the GPU

Phase

"CPU: 73%"

on task manager

*file explorer

Giskard42

@Phase Kill it, in one of the top menus there's an option to run a command

0celo7

lmao

Phase

its not running anymore, in active programs at least

but I still dont have a taskbar

0celo7

3:29 PM

restart the computer.

Giskard42

@Phase in task menu, there's a run command option, then run explorer.exe

brings back the taskbar without restarting

Phase

WHOOOOOOOOO

thank you Giskard you angel

Giskard42

:)

Hey, quick question: besides synchrotron radiation, do any other factors contribute to the loss beam of energy in a particle accelerator?

Slereah

Does anyone know what the topology of the singularity of Schwarzschild/Kerr/FRW metric is

Phase

whats more important / should I do first

LA or Real analysis

0celo7

4:06 PM

Linear algebra

@Slereah line/cylinder/ don’t know

Porobably a point

Slereah

IIRC the FRW singularity is 3D

It has the same topology as the spacelike hypersurface

0celo7

Right but it shrinks to point geometrically

Slereah

Does it

I dunno

I'm trying to find a ref on the topic

0celo7

The scale factor goes to zero

So the volume of the hypersurface is shrinking

Slereah

true

Phase

4:13 PM

Uh

what the hell is that starred link by Emilio

and why does my uni internet think its malicious and block it

Oh.

Anonymiser.

@0celo7 maybe my Uni really is 1984, it seems to disallow privacy.

Balarka Sen

1984 is good shit. Enjoy the bliss of oppression, Komrad.

0celo7

@Phase Get out of there.

Phase

4:39 PM

@0celo7 and go where, huh?

Emilio Pisanty

it already had a star

Phase

oh i see

I can see why

Emilio Pisanty

=P

dmckee

5:05 PM

@JohnRennie "logical" See. That's your problem. The US tax code is full of historical artifacts, and the way compensation is structured in this country is partly a response to those rules.

But removing the rules would hurt all the people who get part of their compensation in ways that take advantage of the quirks, so they do have a dog in the fight.

Sid

Sorry for my lack of idea, but why does the Govt. want to restructure tax laws?

dmckee

And thus some minor patronage to a tiny constituiency fifty years ago hangs on forever resulting in a tax code that (including administrative law and court precedents) should be measured in shelf-feet.

Mockingbird

Hello, everyone. Is Lorrentz spacetime Riemannian space?

0celo7

No

GPhys

@dmckee Admittedly the example he was responding to was less clear than "a tuition waiver given just for being a PhD student", since it just sounded like normal teaching compensation as presented

but that's probably because it was an email intended for more than just PhD students

dmckee

5:12 PM

@Sid Patronage, getting rid of patronage arrangements the other side made, trying to pressure society in to the shape they envision, to raise more money, to raise less money, etc.

Sid

@dmckee Ah, political reasons. Makes sense

Mockingbird

@0celo7 Why?

GPhys

@dmckee It screws us so hard with private university tuition, and plus NYC has income tax as well

my tax liability as percentage of stipend becomes 80%

Sid

Wait, why would the Govt. want to raise less money? :o

Semiclassical

hahahahaha

dmckee

5:15 PM

@GPhys Oh, yeah. Even in the grant-drawing science grad students get a pittance, so even a small bite is going to hurt a lot. And as you say, at high tuition school it will hit harder.

@Sid The phrase that some poitcians use in this country (US) is 'starve the beast'.

Semiclassical

that's a despairing laugh, since that assumes that the reason the republicans want these tax cuts has something to do with making government better

dmckee

They see it as the only way to get rid of government programs they don't approve of.

0celo7

@Mockingbird because the metric isn’t Riemannian

dmckee

But today's Republican party seems to have give up on that. They may be shooting for 'feed the beast so many french fries it dies of a heart attack'.

0celo7

@Phase oh heck they’ve got the stupid modern parts

I don’t caaaaaare

GPhys

5:16 PM

@dmckee Do you have insight to something I don't know about - why does the university do the tuition+waivers to begin with? I speculated maybe it is a tax thing for the university, but maybe you know the answer

Semiclassical

@GPhys yeah. on the Uni side, it does point to the fact that the current grad student system in the US rests on certain financial incentives/arrangements

dmckee

@GPhys Because (a) 'pay the students and then collect their money' is no better for the uni than 'don't charge the tuition in the first place', (b) waiving tuition is better for the students from a tax POV and (c) that way the uni doesn't have to pay them enough to cover the taxes. So the university comes out ahead (and maybe splits the proceeds with the students).

Phase

@0celo7 shame they killed off Desmond

Are you still just a random dude exploring memories for Abstergo?

0celo7

A random chick now

It’s been diversified

Semiclassical

@dmckee One probably can't disentangle it from how much the Uni's rely on grad student labor as TAs / RAs

dmckee

5:21 PM

@Semiclassical The uni relies on student workers either way. This is about how to minimize the cost of getting them.

Semiclassical

eh

Phase

@0celo7 did you just assume her [redacted]

Semiclassical

i'm more getting at that while I certainly find the current proposal to be pretty despicable, I have a hard time not being cynical about the university's stake in all of this

0celo7

@dmckee are you saying that this tax plan is beneficial for the universities?

Semiclassical

@0celo7 my own vote on this would be heck no

0celo7

5:26 PM

It seems like many people would have to drop out

Especially for private universities

Sid

@0celo7 Don't private Universities hand out scholarships?

Semiclassical

when our uni's Dean of Grad Education is sending out an email to all grad students asking them to contact their representatives and senators about this, it's not because the uni stands to benefit from the tax changes

my cynical reasoning for why they don't want it is that it'd destabilize the current system uni's have for getting grad student labor as TAs / RAs.

GPhys

I was exploring what grad school would look like under the new tax proposal and I realized that if I rent a cheap 8x18 ft parking spot in Brooklyn to live on and budget $1/day to food then I will still have $6/month left over to spend on clothes and invest in retirement

so I have that going for me

that's not a joke I really calculated that

0celo7

@Semiclassical My own cynical thought is that maybe we shouldn’t be pursuing worthless degrees.

GPhys

I considered the benefit of not spending $1/day on food and instead eating out of the extra trash in NYC but the extra rent wiggle room $30 gave me wasn't enough to find a better parking spot to survive winter in

dmckee

5:33 PM

@0celo7 I'm saying that under the current rules the universities pay less overall when they offer tuition waivers. SO, after the shake-out (during which time the students would be screwed) the universities would end up bearing the brunt of the change.

The students would see one long term gain after the pay levels adjusted: more points toward social security for the same work and the same take-home.

0celo7

@Phase holy heck there’s crocs in the water

dmckee

Which just goes to show how interlinked the system is.

0celo7

Pay adjusted?

dmckee

@Semiclassical The uni doesn't stand to gain from the change: they stand to lose from it. That's the point. Under the current system they reap a benefit and that will go away if the bill passe as it currently stands.

But don't worry, in Nancy Pelosi's words they have to pass it to find out what is in it.

::pounds head on wall::

@0celo7 Sure, students do drop out (or change programs) from time to time do to pay issues. In time the market will adjust. But I would hate to be a student while that adjustment is still shaking out.

It sucked enough in the '90s.

Phase

@0celo7 you're missing the important questions

is it an RPG? and more importantly, is it fun?

Semiclassical

5:39 PM

@dmckee sure. that's what i'm getting at

0celo7

It’s not an RPG and it’s fun

Semiclassical

i'm just saying one shouldn't be naive about it and suppose that the uni's only stake in this is concern for how it'd impact their grad students right now

0celo7

Agreed

The thought that they’d be doing it out of the goodness of their hearts didn’t even cross my mind.

Semiclassical

@0celo7 i'd put it a little differently and say that research uni's are very committed to a model of an ideal student as one who goes on to grad school and eventually becomes a prof

with people who go on to industry being seen as "not cut out for academia"

0celo7

@Semiclassical I’m talking about from the GOP’s perspective.

Semiclassical

5:45 PM

riight

0celo7

And maybe from a moral one.

Semiclassical

i think the GOP's perspective is largely "If we don't pass a tax bill then our donors will cut us off"

0celo7

Is the TA thing specifically in there or is it a technicality due to something else?

Semiclassical

(for instance: washingtonpost.com/politics/congress/…)

there's a specific regulation being repealed

"Repealing section 117 (d)(5), as the proposal does, will make tuition reductions for graduate student teaching assistants taxable income."

though of course this is all very up in the air

for instance: washingtonpost.com/news/grade-point/wp/2017/11/09/…

0celo7

Who knows if it will pass

Semiclassical

5:49 PM

yeeah

some numbers here, for reference: fortune.com/2017/11/08/…

i haven't seen anything yet from R's talking about that specific provision

Kelthar

This is a bit random, but does anyone know why this is true, for a plasma(?):

Semiclassical

isn't that just the statement of the dispersion relation?

i.e. some (possibly implicit) relation between $\omega$ and $k$?

0celo7

physicists like to write equations like that

I guess because they're often implicit

Kelthar

yes, I know it's a relation between $\omega$ and $k$, but the =0... yes, probably it's just implicit, but idk, it's just weird

Phase

btw my DE skills are also lacking. Beyond factorising and inspection I don't really have many methods. @0celo7 can you recommend any good, rigorous ODE stuff?

0celo7

6:04 PM

For ODE you need to know how to solve them and need to know the Picard-Lindyhop theorem.

Everything else is optional.

dmckee

@Semiclassical There seems to be a current of unspoken anti-intellectualism in parts of the GOP these days.

Phase

yeah but I just don't wanna miss stuff that could be interesting

Semiclassical

and spoken anti-intellectualism in the rest

dmckee

Which is, of course, a POV with a long history in this country (and not restricted to any particular party).

But those folks may be happy to see it become harder to be a grad student.

Semiclassical

there's definitely a contingent of the GOP which is solidly anti-higher ed

0celo7

6:06 PM

@Semiclassical For the wrong reasons, sadly.

Phase

@dmckee what are you talking about? Surely a few counterexamples against Global Warming, if they're true or not who knows, means we shouldn't invest in preventative measures right?

Semiclassical

eh, who knows if they really even care about the grad students

Phase

afterall

Global warming is filthy commie theory

0celo7

@Phase Yup, Chinese propaganda.

Semiclassical

their target may simply be the universities themselves, with the grad students simply being in the path of the train

Phase

6:07 PM

@Semiclassical if people become edumacated will they question the government? [thinking emoji] they're making a push to stop anyone from reaching a higher dimensional wavelength and seeing the flat earth

dmckee

@Phase I was skeptical (in, I hope, a proper scientific sense) about parts of the climate change 'consensus' for some time.

And I still think the big reports a rather shamelessly politicized and not very balanced.

Phase

@dmckee oh yeah its absolutely fair to be skeptical but regardless, if there's even like a 70%/30% split for and against, with evidence, we should invest in it

It's literally the future of habitability of the planet

dmckee

But when I listen to the politically active resistance I cringe every time: these people are basically kooks.

Phase

When futureman can shuttle us of to Space-America then we can let Earth die

dmckee

The deny the parts of the science that actually are solid. Rather than focusing on the question of how are resources are best spent.

Phase

6:09 PM

that reminds me

conservapedia.com/Quantum_mechanics

dmckee

The odd part to me is that the 'lets have an America like the 1950s' crowd's best interests are best served by aggressive stance to preempt the large scale migrations that are very likely if thing go even a quarter as bad as the IPCC keeps suggesting.

Semiclassical

@dmckee some are. Others just have a vested interest in that their donors would lose money if action were taken

dmckee

I suppose the up-side is that Canada may be a nicer place in a warmer epoch.

Phase

GUYS

I FOUND A GOLDMINE ON CONSERVIPEDIA

conservapedia.com/Counterexamples_to_Relativity

"The theory of relativity is disproved by numerous counterexamples, but is promoted by liberals who like its encouragement of relativism and its tendency to pull people away from the Bible.[note 1] Here is a list of 50 counterexamples: any one of them would show that the mathematical theory is incorrect:"

Kyle Kanos

I'm pretty sure conservapedia only exists as a method of trolling liberals

0celo7

6:14 PM

@Phase I don't want to jinx it but my fps seems to have stabilized after getting to the second part of the map.

Phase

Nice. @0celo7 dont you have a GTX1080?

0celo7

I do.

I have the game completely maxed out though.

I could lower settings and get to 120, probably.

Phase

Is it purrty?

0celo7

Right now the average is 80.

dmckee

@KyleKanos I know a guy attending grad school in mathematics who studied a lot of physics in school who posts on certain social media sites in favor of a Flat Earth.

0celo7

6:15 PM

Maybe 85.

@dmckee Me?

Phase

@dmckee it's not Aetherius Tesla is it?

dmckee

I haven't been able to decide if it is straight up trolling or some kind of subtle social commentary on the difficulty of decerning the truth in our complicated world.

0celo7

@Phase I don't know what good graphics are any more

Kyle Kanos

@dmckee I espouse ridiculous ideas for fun in some cituations

0celo7

It's not mind blowing, cut certainly not bad

dmckee

6:16 PM

@0celo7 @Phase Neitehr. Someone who graduated from my current school.

Kyle Kanos

Like f(R) metric theories are obviously right

Phase

@0celo7 Fair. I feel like Art / graphics style is more important than how many pixels you can have

Kyle Kanos

And dark matter is completely wrong

0celo7

@Phase In that case, it's incredible.

The design is truly great.

Phase

really? Nice

0celo7

6:17 PM

Yah

I can take screenshots but they will get the jpg nuke

Phase

I've been tempted to go back and play my top 3 but I just can't motivate myself to relearn the mechanics of them

if you dont play your favourite game on the hardest difficulty are you really playing it? [thinking emoji[

Semiclassical

Tbf dark matter seems like a placeholder for ignorance about certain physics right now

Kyle Kanos

@Semiclassical So what you're saying is that it's the "God in the gaps" for galactic rotation curves?

Phase

@Semiclassical "The equation $x^2 + 1 = 0$ has two distinct, dark solutions".

0celo7

$\pm j$

Kyle Kanos

6:19 PM

@0celo7 j!?

Phase

$j$esus christ

0celo7

Yes, $j$.

Semiclassical

That there’s something going on is clear, but absent a discovery of actual particles...

Kyle Kanos

@0celo7 What are you, an engineer?

Phase

if you don't use $ijk = -1$ are you even trying

0celo7

6:19 PM

Yeah, actually.

Kyle Kanos

lame

Phase

the solution to $x^2 + 1 = 0$ is $ij$ and $ji$

idk how to do plus minus :(

Kyle Kanos

Unless you mean financial engineer, then you're okay

@Phase \pm

Phase

I fixed it anyway

0celo7

@KyleKanos If somehow $\sqrt{-1}$ showed up in Riemannian geometry I would use $j$ because $i$ is the injectivity radius.

Kyle Kanos

6:20 PM

$i^2=j^2=k^2=-1$

Phase

Yeah but $ij = k$ and $k^2 = -1$

0celo7

Quaternions are perhaps the most evil group

Kyle Kanos

But they're so useful for GA

Phase

I love quaternions but I've never studied them as a group

0celo7

GA?

Phase

6:21 PM

I've just used them as a faster version of hand-rules for cross products

Kyle Kanos

Geometric Algebra (aka, Clifford Algebra)

0celo7

Is geometric algebra algebraic geometry's disabled cousin?

Phase

^thats Not Nice

my cousin is a geometric algebra

0celo7

heck, idk the right word

Slereah

Quaternions are just like

SO(4)

0celo7

6:22 PM

@dmckee what is the PC word for [redacted] nowadays?

what does the university instruct you to use

Kyle Kanos

@0celo7 uh, no. not that i'm aware of

Slereah

or something

0celo7

@Slereah I don't think that's true in any sense

if anything it would be related to SO(3)

dmckee

@0celo7 Er ... they mostly just tell me to be professions and avoid being insulting or racially, religiously or sexually insensitive.

Kyle Kanos

GA is pretty coordinate & dimension independent

0celo7

6:24 PM

right but handicapped is bad now

dmckee

And I get to watch some monumentally cringeworthy videos once a year.

0celo7

is it alternatively abled?

Slereah

Well SU(2) is unit quaternions

Not sure which one is the full quaternion group

0celo7

@Slereah Spin(3)?

Slereah

yes

Semiclassical

6:25 PM

Is this headed towards a rant about “PC culture”? That’s where it seems to be going

0celo7

@Slereah Ok now do I force an HE reference into my thesis?

@Semiclassical No, I'm just procrastinating

Slereah

shouldn't be too hard

HE and Steenrod

0celo7

Ah, maybe I can get Steenrod in there

I have to define spacetimes

Kyle Kanos

HE = hawking & ellis?

0celo7

I'm gonna do the ADM splitting, but that's not in HE

Hmm

@KyleKanos yes

Kyle Kanos

6:35 PM

Today is my youngest kid's 1st birthday

Slereah

6:58 PM

@0celo7 Alcubierre is all about the ADM splitting

And he'll be glad to be quoted for something that isn't the warp drive

0celo7

@Slereah but there's probably better places, e.g. Yvonne

actually Yvonne is a good book to reference

I want to reference everything

Slereah

Will you reference this book

amazon.com/Physics-Stargates-Parallel-Universes-Wormhole/dp/…

I love the cover so much

Balarka Sen

This is awesome

I feel like I'd understand science if I read this book alongside watching Neil deGrasse Tyson

Semiclassical

7:47 PM

@Slereah I just noticed that one of the 5 star reviews on Amazon is from Jack Sarfatti

Slereah

who

Semiclassical

en.m.wikipedia.org/wiki/Jack_Sarfatti

0celo7

Lmao

Phase

8:27 PM

@Slereah Is that Carl Sagan?

0celo7

@JohnRennie help

I no longer have a PC background

Phase

hand of fate 2 is pretty weird. @0celo7 ACO still fun?

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