The h Bar

0celo7

16:00

@Danu I'm not taking anything harshly

yuggib

I could not understand your test problem...

0celo7

I have to go to class :P

Danu

@0celo7 Good

Bye, then.

yuggib

class is overrated

0celo7

but you did laugh at me

@yuggib mandatory lab

yuggib

16:00

T_T

Danu

@0celo7 I think I've laughed at most people in this room :)

yuggib

that is the worst

Danu

Labs... never have I ever (forgetting one terrible month)

yuggib

it is politically correct to say "laughed with"

btw, if you like your sets of reals to be always measurable

you do not like the continuum hypothesis

Danu

I don't think I ever want to measure anything :)

ACuriousMind

16:02

@Danu No Wiener contest?

(I am referring to defining the Wiener-like measure for defining path integrals, of course)

yuggib

and what would the contest be?

ACuriousMind

@yuggib I don't think many people except RonMaimon are on that particular crusade :P

@yuggib Being the first to define it for arbitrary fields and win a Nobel, of course.

Danu

gph.is/XIFXHx

yuggib

@ACuriousMind Me too.... :-P

@ACuriousMind what do you mean for arbitrary fields

I would start making sense for it when the time is not euclidean

ACuriousMind

@yuggib Well, ideally, arbitrarily interacting fields on arbitrary spacetimes ;)

yuggib

16:08

@ACuriousMind Ah, you meant quantum fields...

I thought about mathematical fields

I could not understand :P

ACuriousMind

Oh, lol, yes, I meant quantum fields

yuggib

well, I don't know is someone would prove up to that task...

ACuriousMind

Fields over things like $\mathbb{F}_p$ probably get weird, if you can define them

yuggib

probably Hairer is the closest person to obtain that (in euclidean time)

Danu

Fields over fieeeelds

yuggib

16:10

let's get weiird

QFT on p-adic fields

someone should have thought about that

Slereah

I'm sure someone has

They've done QM by completely changing ZFC

So I'm sure they also did change $C$

yuggib

shit

empslocal.ex.ac.uk/people/staff/mrwatkin/zeta/physics7.htm

p-adic physics

Slereah

Yep

yuggib

arxiv.org/abs/hep-th/0312046

ACuriousMind

"On the fundamental level our world is neither real nor p-adic; it is adelic. For some reasons, reflecting the physical nature of our kind of living matter (e.g. the fact that we are built of massive particles), we tend to project the adelic picture onto its real side. We can equally well spiritually project it upon its non-Archimediean side and calculate most important things arithmetically. "

wat

Slereah

16:16

I am not surprised in the least

yuggib

there are reviews about that...physicists are crazy, or desperate, or both

2

Slereah

Like I say

ACuriousMind

> First Int. Conf. on p-Adic Mathematical Physics

Nice

Slereah

There's an entire industry of interpretations and formalisms of QM and GR

yuggib

T__T

ron maimon's crusade seems almost reasonable after that...

almost, but not quite

damn connes

if you try to prove the Riemann hypothesis using a "physical" analogy and you won the fields medal

then it is almost obvious that some physicist is going to do the opposite

and use number theory in some abstruse physical theory

DanielSank

16:21

@JohnDuffield How about I'll point it out (again) next time you do it?

yuggib

(however, connes did not win the fields medal for that particular analogy)

ACuriousMind

@yuggib You will regret those words when we have the p-adic Theory Of Everything

Slereah

Well, the physics folder is sorted

yuggib

@ACuriousMind Adelic ToE

DanielSank

@DavidZ Note that there are many other ways to distribute pdfs. arXiv, bintray, and personal websites come to mind.

Slereah

16:22

Now let's sort the subfolders!

Especially the GR folder

yuggib

p-adic ToE is for beginners

Slereah

Engineers don't know what p-adic numbers are

ACuriousMind

Yeah, right, my bad

Slereah

Damn

900 GR papers and books

yuggib

you should limit your compulsive Gr downloading behavior

you're clearly addicted

ACuriousMind

16:36

@Slereah Already done playing Fallout 4? oO

Slereah

Nah

But I have a lot of things to do!

Gotta clean up the house a bit

(also I am a bit stuck in Fallout 4 :p)

Deathclaw

Doing some of this before tackling the deathclaw

Putting a deathclaw this close to the beginning is a bit of a dick move

Before I reached the first town

Didn't sell all the random shit yet

Hm

Making folders

ACuriousMind

If they are still as they were, then yes, that's a definite dick move. May just be an in your face "This game does not level with you"-statement, though

Slereah

Are there any spacetime shortcuts outside of wormholes and warp drives

@ACuriousMind : Well the circumstances are such that it's not too challenging, either

But I picked a very low endurance build for my character

David Z

@DanielSank yes, but not with automatic and continuous updating as you edit the source

John Duffield

16:51

@DanielSank : no. I want an example of where I have actually moved the goalposts. I say this because it's not something I do. I play ti straight. ACM's accusation is a specious slippery ad-hominem assertion, made because he can't find anything in my physics to get his teeth into.

ACuriousMind

@Slereah So you're a masochist ;)

DanielSank

17:18

@DavidZ True dat.

@JohnDuffield I decline your invitation to crawl the chat history looking for cases where you've done XYZ. I will, however, maintain my offer to point it out next time you do it. You do it often enough that I am confident I can make that offer useful.

bolbteppa

17:33

Challenges your p-adic adele's with calculus = commutative algebra en.wikipedia.org/wiki/…

Danu

@bolbteppa I don't find this particularly disturbing :P

John Duffield

@DanielSank : I don't move the goalposts, hence you can't give any examples, and you won't point out any future instances. Nor will anybody else. But doubtless you will high-five ACM when he makes up some specious handwaving ad-hominem accusation that he can't back up. _

Danu

John ain't moving nuttin'

0celo7

@JohnDuffield You're the only one making ad hominems by attacking my age.

bolbteppa

17:51

NUMBER THEORY \ COMPLEX GEOMETRY

Integers \ Polynomial functions on the complex plane
Rational numbers \ Rational functions on the complex plane
Prime numbers \ Points in the complex plane
Integers mod pn \ (n-1)st-order Taylor series
p-adic integers \ Taylor series
p-adic numbers \ Laurent series
Adeles for the rationals \ Adeles for the rational functions
Fields \ One-point spaces

Kind of mental

Danu

Neat.

bolbteppa

Results like this are called "local-to-global" results, since they're analogous to constructing a function from local information, like its Laurent series at all different points.

In 1950, in his famous PhD thesis, John Tate came up with a clever way to formalize this "Laurent series at all different points" idea in the context of number theory. To do this, he formed a ring called the "adeles".

Indeed, this is what my whole discussion so far has been leading up to! Adeles are a really nice formalism, and you pretty much need to understand them to follow what people are doing in work on th…

Makes this stuff less scary! Don't feel comfortable with it yet though

Slereah

@ACuriousMind I just like a playthrough where I can use my wits ;w;

Also I just got murdered by some giant crabs

Dang

I need to remember to save more often

ACuriousMind

@Slereah You are not in the habit of hitting F5 like every two minutes? :P

Slereah

depends on the game

0celo7

17:57

Two minutes

That's not nearly enough.

Slereah

Fallout, usually not so much

After I grind through the first few levels, it gets rare to get murdered

0celo7

@ACuriousMind Do you really want to walk those 10 meters again when you reload

Of course not, so save every 10 meters

Slereah

don't save too often tho

Then you might quicksave right in front of an explosion

0celo7

True. That's why you have auto saves

And then hard save every ten minutes.

In this way you get a glorious archive.

Then back up the saves to a thumb drive and delete them so you don't slow down the game.

Made a stupid mistake 3 hours ago? You've got a save right before.

Slereah

18:13

blah

Fallout 4 has a "build your little town" game thing

It's not too bad but it's a bit too involved

0celo7

Fallout 4 confirmed for sucking

Slereah

Hm

Among my papers there is

"THE 192 SOLUTIONS OF THE HEUN EQUATION"

And there is indeed 192 solutions

Also a paper called "Shut up and calculate"

0celo7

Is that Heun like "morning" as said in the Rhineland or is it He-un

@Slereah that's what ACM's book line would be

Shut Up and Calculate Volume 1: Sheaf Cohomology

Slereah

"Shut up and calculate" is a QM interpretation

It's the interpretation where you shut up and calculate

Instrumentalism, in fancier terms

0celo7

why are you telling me that

I know what it is

Slereah

18:19

I did not know that you knew

Also there's a paper called "Neutrino counter nuclear weapon"

0celo7

ACM shuts up and calculates

@Slereah !

link?

Slereah

"Radiations produced by neutrino-antineutrino annihilation at the Z0 pole can be used to heat up the primary stage of a thermonuclear warhead and can in principle detonate the device remotely. Neutrino-antineutrino annihilation can also be used as a tactical assault weapon to target hideouts that are unreachable by conventional means."

arxiv.org/abs/0805.3991v3

I can't speak for the theoretical aspect but I suspect that using a neutrino beam might not be the most cost effective method

0celo7

I should ask some of the weapons people in my dept about that

Slereah

"Collective Motion of Moshers at Heavy Metal Concerts"

0celo7

No institution?

What kind of nut is this guy

Slereah

18:21

"Biological Effects of Stellar Collapse Neutrinos"

@0celo7 Pretty sure he's a supervillain

Photo of the author :

0celo7

you should post that skeli gif again

that's pretty villainous

1 PeV neutrino beam

how much is a PeV

Holy crap he's proposing a device to detonate warheads remotely

This guy is frikken crazy

> Chinese University of Hong Kong

Also

> [4] S. Weinberg, “The Quantum Theory of Field I”, Cambridge, Cambridge, 1995.

> [6] M. E. Peskin and D. V. Schroeder, “An Introduction to Quantum Field Theory”, Westview Press, Boulder, CO, 1995.

I wonder if Zee's books have any official citations.

@Slereah Did your thesis have any citations?

@Slereah Did you get your undergrad in 3 years?

Slereah

18:40

No

I didn't publish it or anything

obe

@0celo7 I'm here.

D:

Physics Meta

0

Q: Fabrication Discussion - Is Physics the place for it?

While Fabrication (usually referring to MEMS/NEMS technology) is a fundamental part of physics, somehow I feel the physics stack isn't the place for it. The physics stack seems most suitable for discussions pertaining to theoretical and experimental results, and posting a question about fabricati...

discussion

Slereah

Fallout 4 update already out :p

It does have a few bugs currently

obe

@0celo7 re-send.

Slereah

"Towards a more realistic Gravitomagnetic Displacement Drive"

This paper has a lot of red flags

AngusTheMan

18:55

Evening everyone :) Got any ideas about a possible function or progression for this?

Slereah

Oh Eric Davis

AngusTheMan

0celo7

19:16

@Slereah why

@Slereah lolwat

Slereah

@0celo7 Important illustrations

0celo7

@Slereah apparently

Huy

scontent-ams3-1.xx.fbcdn.net/hphotos-xtp1/v/t1.0-9/… lol

0celo7

what

Huy

Einstein got the worst grade possible in physics lab

0celo7

19:26

I can't read the writing there

Huy

it says "physics beginner lab: 1"

1 is the worst, 6 the best

0celo7

Verdammte Schweizer

Huy

man I wanna learn about elliptic functions from Minkowski as well

0celo7

Die eins ist sehr gut

Huy

or Calculus of Variations

0celo7

19:28

@Huy why

Huy

idk

0celo7

that's engineering math

Huy

fame

0celo7

fame?

Huy

much fame

0celo7

19:28

wtf does that mean

Huy

leo.dict.org

0celo7

wtf is that

Huy

jk its dict.leo

lol

0celo7

what??

who is famous

@Huy I'll probably take a calc of var class

it's useful for engineering and PDEs

Huy

good for u

I didn't

I had to take diffgeo then

and still don't know shit

0celo7

19:31

yeah but you're smart

Huy

not really

0celo7

yes really

Huy

nah

0celo7

yah

Huy

I need to clean my flat

I hate cleaning when I'm tired

I wish I could afford a maid already

0celo7

19:33

then don't clean?

Huy

I have to

0celo7

no you don't

Huy

yes I do

0celo7

also you're rich

Huy

I'm not yet

0celo7

19:33

maid?

Huy

soon^{TM}

0celo7

only rich people think like that

Huy

we used to have a maid

saves a lot of time

time = money

0celo7

dude a maid is like 100 bucks

how can you afford this

Huy

I can't atm

0celo7

19:34

how could you afford this

Huy

maid over here is around 25-30 per hour

2-3 hours a week

flat always clean

0celo7

wait what

Huy

worth every single penny

0celo7

2-3 hours to clean your flat

holy shit how big is your flat

Huy

about 45 sqm

0celo7

19:35

what is that in proper units?

485

let's see

doing intensive calculations here

@Huy ok

2-3 hours to clean your flat

at 25 USD?

Huy

per hour

roughly, yes

0celo7

let's apply this to my house

see what kind of money we would pay maids

Huy

you can't scale linearly

0celo7

if one maid can clean 485 sqft in 2 hours how long does it take a maid to clean 5400 sqft

Huy

I'm assuming pretty much everything is dirty for 2-3 hours

but of course some parts of the flat won't get dirty again as quick as say the bathroom

or the kitchen

for example our maid at my parents' home would almost never clean the living room

0celo7

19:41

let's just do this

11 hours

11 hours times 25 USD

o.o

Huy

mostly bathrooms, vacuum the bedrooms and so on

0celo7

you're shitting me

Huy

and that kids is why you don't hire a physicist to estimate your maid's cost

0celo7

275 roughly

Huy

and 275 isn't a lot if you can do 11 hours of work in that time

I earn more in 3 hours

0celo7

19:43

@Huy At least the mathematician thinks I'm a physicist.

@Huy Hot damn

I was pretty close

Maids cost $225 for our house.

So that's not that outrageous I guess...

Huy

yea

0celo7

So my Fermi estimate was p. good

h8r

Huy

so how many piano tuners

0celo7

like 4

Huy

makes sense

0celo7

19:44

or is it 20

Huy

idk I don't live in the US

0celo7

my bet is on 10

eh, make that 11

Huy

I'm gonna go clean my kitchen now

see you in roughly an hour

I always tell myself to just do the dishes immediately after I eat

but it hardly ever happens

fukin kitchen

0celo7

tfw no dishes

tfw poor

DanielSank

@Huy I usually try to clean dishes while I cook.

Cuts down that boring cleanup period after the meal.

Huy

19:46

good thing is I have a dishwasher

bad thing is I'm too lazy

DanielSank

^ Life.

Huy

I want to do that too really

0celo7

@DanielSank I could never do that

Huy

but I am not that advanced at cooking yet

0celo7

if I had a dishwasher

Huy

19:46

but I will be soon

DanielSank

@0celo7 Good thing you have confidence and want to learn new skills.

0celo7

I'd take them out, eat, then put them back in

never use the cabinets

DanielSank

@Huy See now that's more like it. @0celo7 should take note.

0celo7

@DanielSank I fail at everything I do

@DanielSank I live in a dorm

where no cooking is allowed

also no money to buy things

like food

I'm a poor poor cat

DanielSank

@0celo7 ಠ_ಠ

That was in poor taste. Sorry.

@0celo7 Not like this guy, eh?

0celo7

19:50

what got removed?

idc if it was in poor taste, I would like to know

DanielSank

@0celo7 My trying to make a joke related to the starving artist trope, but failing.

skull petrol

Me too

DanielSank

@skullpetrol High five.

0celo7

@DanielSank you do know obesity is highest among lower income people

skull petrol

@DanielSank o/

0celo7

19:52

low income cats are also the fattest cats

DanielSank

@0celo7 I've heard people say that. As usual, I am mostly convinced by data.

Not that I think your statement is false.

I just usually mostly ignore demographic/political oriented generalizations until I see data.

Huy

turns out there was just dishes to put in the dishwasher

cba vacuuming the kitchen now

winning

DanielSank

Many moons ago I posted here expressing incredulity that so many physicists were spilling beer on their keyboards

> What's with all the physicists in this site spilling beer on their keyboards?!?!

I would like to confess that a few days ago, I too spilled beer on my keyboard.

5

ACuriousMind

@DanielSank Good job.

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