The h Bar

Phase

14:02

Is the integral of a sum equivalent to a sum of integrals? For instance, does $\int \Sigma_i f_i(x) dx = \Sigma_i \int f_i(x) dx$

Anonymous

@Phase $\int (f_1(x)+f_2(x)) dx = \int f_1(x)dx + \int f_2(x)dx$

Balarka Sen

If you have infinite sums you have work to do

Sid

Um... guys. I need some help in English...

Anonymous

74

Q: When can a sum and integral be interchanged?

Let's say I have $\int_{0}^{\infty}\sum_{n = 0}^{\infty} f_{n}(x)\, dx$ with $f_{n}(x)$ being continuous functions. When can interchange the integral and summation? Is $f_{n}(x) \geq 0$ for all $x$ and for all $n$ sufficient? How about when $\sum f_{n}(x)$ converges absolutely? If so why?

Anonymous

Too much for me ^

Anonymous

14:08

:P

Anonymous

@Sid ?

ACuriousMind

@Blue Great, now I have managed to confuse myself - it appears that I can derive the M-B distribution in the canonical ensemble under the assumption the classical particles are distinguishable, or in the grand canonical ensemble under the assumption the classical particles are indistinguishable. Which makes no sense.

Sid

What is the term coined to describe the unsightly proliferation of Plastic bags in streets?

ACuriousMind

It appears instead of answering your question I will have to ask another one myself.

@Sid There's a term for that?

Sid

Apparently there is. (Maybe a phrase and not a single word.)

Anonymous

14:11

@ACuriousMind I actually haven't learnt about ensembles yet. So I can't comment on that. I think the derivation of M-B distribution should be given in standard textbooks. I'm checking...

BAYMAX

What does this mean with reference to Einstein - "I must seem like an ostrich who buries its head in the relativistic sand in order not to face the evil quanta. "

ACuriousMind

@Blue I don't need the derivation, I've got plenty of them already. The problem is that they seem inconsistent with each other

I thought I could make it very clear in the grand canonical ensemble how M-B assumes distinguishability, but it appears it actually assumes indistinguishability there!

Anonymous

9

Q: What is the relationship between Maxwell–Boltzmann statistics and the grand canonical ensemble?

In the grand canonical ensemble one derives the expectation value $\langle \hat n_r\rangle^{\pm}$ for fermions and bosons of sort $r$: $$ \langle \hat n_r\rangle^{\pm} \ \propto \ \frac{1}{\mathrm{exp}[(\varepsilon_r-\mu)/k_B T] \mp 1} . $$ For $(\varepsilon_r-\mu) / k_B T\gg 0$, we find $$ \...

statistical-mechanics temperature probability density quantum-statistics

Anonymous

@ACuriousMind I see...hmm

Slereah

Hey @0ßelö7

samuel-lereah.com/articles/Physics/…

Do you see any major error in the section on bounded acceleration

0ßelö7

14:26

@BAYMAX duffield?

@Slereah "switching back to canonical coordinates"

proof?

Slereah

Proof of what

$t = v+u/2$

$x = v-u/2$

That's the definition

Anonymous

@ACuriousMind While deriving the MB statistics from grand canonical ensemble did you consider the system to be a single particle state rather than a particle(like an atom) ?

Slereah

Also $e^x + e^{-x} / 2 = \sinh(x)$

That's basically it

Anonymous

"As a result, when multiple particles are placed into the same orbital, the overall collection of the particles (in the system phase space) does not count as one whole microstate but rather only a fraction of a microstate, because identical states (formed by permutation of identical particles) should not be overcounted. The overcounting correction factor is the factorial of the number of particles."

Anonymous

Grand canonical ensemble

In statistical mechanics, a grand canonical ensemble is the statistical ensemble that is used to represent the possible states of a mechanical system of particles that is being maintained in thermodynamic equilibrium (thermal and chemical) with a reservoir. The system is said to be open in the sense that the system can exchange energy and particles with a reservoir, so that various possible states of the system can differ in both their total energy and total number of particles. The system's volume, shape, and other external coordinates are kept the same in all possible states of the system. The...

Slereah

14:31

Although I didn't write in yet why I drop $A$

(I just set them to 1 because who cares)

0ßelö7

@Slereah ln(cos)?

Seems like a bad idea

Slereah

$$\int \tan(x) dx = -\ln(\cos(x))$$

Anonymous

@Slereah There will be a modulus there :P |cos(x)|

ACuriousMind

@Blue You can trust that I've read all relevant Wiki articles thoroughly before deciding I am confused by the situation :P

0ßelö7

@Blue this

Anonymous

14:34

@ACuriousMind Okay, I trust you. :P

Slereah

@Blue not wrong

Anonymous

I should read up the ensemble stuff soon

0ßelö7

@ACuriousMind what is the issue?

ACuriousMind

26 mins ago, by ACuriousMind

@Blue Great, now I have managed to confuse myself - it appears that I can derive the M-B distribution in the canonical ensemble under the assumption the classical particles are distinguishable, or in the grand canonical ensemble under the assumption the classical particles are indistinguishable. Which makes no sense.

0ßelö7

sounds like a main site question

Anonymous

14:36

@0ßelö7 I didn't mention the constant..lol

Anonymous

+C

ACuriousMind

26 mins ago, by ACuriousMind

It appears instead of answering your question I will have to ask another one myself.

0ßelö7

@Blue if you say that one more time we will be done

there is never a constant

Anonymous

@0ßelö7 What?

0ßelö7

there is no what

Anonymous

14:37

...

Balarka Sen

Indefinite integral is a big nonsense

It's just a differential equation

with unspecified initial conditions

0ßelö7

indefinite integral is not real math

Slereah

do you prefer the name ANTIDERIVATIVE

you big baby

0ßelö7

no

that's not real math either

Slereah

why not

Balarka Sen

14:38

real MAFF

Anonymous

REAL MATH is addition, subtraction, multiplication and division. Everything else is non-sense and doesn't increase GDP.

0ßelö7

if you don't call it a primitive then you're trash at analysis

Balarka Sen

it's actually just writing a given 1-form as an exact form locally

everything else is a big abuse of notation

Slereah

is that the case for all indefinite integrals, though

Balarka Sen

yeh bruh

Slereah

14:41

What about the indefinite integral of the delta function

Balarka Sen

delta function is not a function you hipster ass

0ßelö7

sigh

Balarka Sen

it's a flipping distribution

0ßelö7

@BalarkaSen why do you have to bring topology into everything

Balarka Sen

an approximation to the identity if you prefer

Shashaank

14:41

Anybody here would like to help me on this - " The divergence of Eelectric field of a point charge is 0 everywhere except at the origin where it is rho/epsilon. What can we say about the divergence of Electric field due to an extended continuous distribution of charge like a cylinder or anything " Will the divergence be rho /epsilon...

Slereah

>he doesn't know about the embedding of distributions into a function space

0ßelö7

@BalarkaSen what?

...who prefers that?

Balarka Sen

i do

0ßelö7

weirdo

Balarka Sen

you prove weierstrass approximation theorem with that convolution shit

0ßelö7

14:42

since when?

Balarka Sen

also that periodic functions are approximated by fourier series with enough regularity

Slereah

What's a fourier series without enough regularity

0ßelö7

@BalarkaSen I gave you that proof

Slereah

$1_{\mathbb Q}$?

Anonymous

@Shashaank Look up Gauss law...divergence form...

Slereah

14:44

what is the fourier series of $1_{\mathbb Q}$

Balarka Sen

@0ßelö7 since this paper bondmatt.files.wordpress.com/2009/09/weierstrass2-01.pdf

0ßelö7

@BalarkaSen Stone-Weierstrass has nothing to do with convolutions

Balarka Sen

read that paper

0ßelö7

In fact, that's a god-awful way to prove it because it holds in much greater generality via a much easier proof

Balarka Sen

no u suck

0ßelö7

14:46

@BalarkaSen Just look at the Preliminaries chapter of Yosida's FA book

Balarka Sen

10 ways to start a good debate: 1) Start personally attacking the opponent when you're feeling insecure

Shashaank

@Blue yes I know that the divergence of E = rho/epsilon . We use Gauss's law to get E for Cylinders , spheres , etc. But if after calculating the E of these bodies , I calculate the divergence of E I will get 0 (eg :for sphere ). Is the fact again that the divergence comes due to the fact that it will not be 0 at the charge itself ?

0ßelö7

@BalarkaSen I am trying to help you. When you learn spectral theory you will need Stone-Weierstrass for subsets of $\Bbb C$

Balarka Sen

i am trying to troll you

0ßelö7

What does that mean?

Anonymous

14:51

@Shashaank You are confusing yourself. If electric field lines entering a region (or point) is equal to the electric field lines leaving that region, then only divergence is $0$. At the positive charge itself there are electric field lines leaving but not entering, so the divergence there will not be $0$.

Anonymous

You can consider electric field to be a vector field.

Shashaank

15:10

@Blue So you mean that the divergence of E due to any charge distribution will be rho/epsilon irrespective of whether it is a point charge or an extended charge distribution (arbitrary in shape)

BAYMAX

@0ßelö7 is that a place?

I have a couple of quotations and I am trying to understand them and thinking of writing about them

0ßelö7

It's a person

Anonymous

@Shashaank Well, Gauss law says $\nabla.\mathbf{E}=\frac{\rho}{\epsilon_0}$ where $\nabla.\mathbf{E}$ is the divergence of the electric field.

0ßelö7

One of the great minds of the site, actually. He was banned for unknown reasons.

BAYMAX

oh

sorry for that

Anonymous

15:14

@Shashaank I advise going through the derivation from Maxwell's eqns...

John Rennie

@BAYMAX Einstein thought quantum mechanics was at best an incomplete theory, and he thought he could come up with a deeper theory that explained quantum mechanics. So he ignored all the developments in QM while he worked away at his own theory.

Anonymous

Also, learn the physical significance of the divergence operator

0ßelö7

@Blue which is?

Are you talking about the old Russian definition using oarallelopiieds

John Rennie

In his quote the I must seem like an ostrich who buries its head in the relativistic sand referred to the fact he was ignoring contemporary developments in QM and concentrating on his own theory.

0ßelö7

Not gonna try to fix that spelling

Anonymous

15:15

@0ßelö7 khanacademy.org/math/multivariable-calculus/…

Balarka Sen

@0ßelö7 how much stuff goes out infinitisimally

0ßelö7

So just what I said

Old Russian math is trash

John Rennie

@BAYMAX: sadly history shows that Einstein completely failed to come up with his improved theory while quantum mechanics went from strength to strength.

Balarka Sen

old comrades discovered pretty much literally every math

BAYMAX

Oh I see

@JohnRennie

John Rennie

15:18

Ah the latest person to fall foul of random flaggings. At least it wasn't you this time @0ßelö7 :-)

@BalarkaSen: I did try to delete your post as soon as I saw a flag against it but I wasn't fast enough. Sorry :-(

GPhys

@0ßelö7 okay so

I think everybody in that class hadn't slept in at least 36 hours

0ßelö7

Y'all need Jesus

Or just know GR before taking the class

BAYMAX

Another quote! @JohnRennie ?

John Rennie

@BAYMAX Yes?

GPhys

today we talked about manifolds

and charts and atluses which sound like subcovers

0ßelö7

15:20

You need to tell me who is teaching this

BAYMAX

"There was a lady called bright, who could travel faster than light. She went out one day in a relative way came back the previous night".

John Rennie

That's a limerick I learned as an undergrad nearly 40 years ago :-)

0ßelö7

I knew it!

BAYMAX

literally 80 years?

0ßelö7

Get a colonoscopy @JohnRennie, please

Anonymous

15:23

@JohnRennie Congrats. You'll be 100 soon. :D

John Rennie

:-) Oops

Freudian slip there :-)

Anonymous

@0ßelö7 Don't get chat-banned man...:P

BAYMAX

|O|

0ßelö7

Why would I get chat banned

Anonymous

Flags are flying around today

nasil

15:25

Your Quantum Nose: How Smell Works

►

BAYMAX

I think how bright can travel faster than light?

John Rennie

I was going to have a colonoscopy, but then I thought it would be a pain in the arse.

0ßelö7

@Blue balarka was flagged. Were there more?

nasil

does anyone know about a paper which supports this video

a study on how smelling works

Anonymous

@JohnRennie I underwent colonoscopy once. It was TERRIBLE. I'd rather die of colon cancer.

Anonymous

15:26

I shouldn't say such things though

Anonymous

:P

0ßelö7

Wow India is hardcore

I could make some jokes but I would get flagged

Anonymous

I had a stomach infection that time. Was 9 years old.

John Rennie

@BAYMAX according to special relativity it is possible to go back in time if you can travel faster than light. Though it's quite a complicated business. It isn't as simple as traveling faster than light means you automatically go back in time.

0ßelö7

Probably from eating with your fingers...

John Rennie

15:27

INCOMING! :-)

Anonymous

Lol

0ßelö7

@JohnRennie what?

John Rennie

@Blue That's a tough thing to happen to a nine year old.

As you get older you get hardened and less upset by that sort of thing, but for a child it must be pretty awful.

GPhys

@0ßelö7 it's okay he drew us nice pictures

Anonymous

Yeah, I remember that day clearly even after 10 years. :/ It was traumatic.

Anonymous

15:29

Anyhow...

0ßelö7

@GPhys that's completely standard

BAYMAX

I saw a similar thing in interstellar like coop was hidden somewhere in 5th dimension and was seeing his past @JohnRennie

John Rennie

@BAYMAX I wouldn't take the film Interstellar too seriously :-)

BAYMAX

haa,I watch it everyday for 10 minutes at least! @JohnRennie

Sid

@Blue WHat did they do?

Anonymous

15:33

@Sid Scroll up a bit...

BAYMAX

ok,let's see the next quote - "If my theory of relativity is proven successful, Germany will claim ma as a German and France will declare that I am a citizen of the world. Should my theory prove untrue, France will say that I am a German and German will declare that I am a Jew."

Sid

Yeah. What do they do in Colonoscopy? Surgery?

John Rennie

It's normally checking for polyps isn't it?

Sid

Oh, got it.

Yeah. Those types of things can be bad.

Avantgarde

The Matrix > Interstellar

John Rennie

15:37

@0ßelö7: yes you'd probably have got flagged for that, but for the record I literally laughed out loud :-)

@BAYMAX it just means everyone loves a success and everyone hates a failure

Anonymous

@Sid It's not really surgery. It's described here

John Rennie

As it turned out relativity was a success but Einstein was driven out of Nazi Germany anyway.

0ßelö7

@JohnRennie would I? It's only bad in context

John Rennie

@Blue before I click that link, it hasn't got graphic pictures has it?

Sid

Ah, so they inserted some pipe into your anus?

John Rennie

15:39

Then lit a match

0ßelö7

@JohnRennie why do you care?

John Rennie

@0ßelö7 I'm eating my lunch

0ßelö7

Ugh. Europeans are so sensitive.

David Z

@JohnRennie Those often go together.

BAYMAX

;<(::)>;

John Rennie

15:40

Let's put the whole thing behind us

Uh oh, two mods in the room :-)

David Z

Yeah, anyway we do have a chat session coming up.

BAYMAX

@JohnRennie you interested in Chaos theory?

Anonymous

@JohnRennie Not as such. It's wikipedia. :P

Avantgarde

Interesting chat topic

John Rennie

@BAYMAX no

Anonymous

15:42

@Sid Ya. In short. (In fact I underwent endoscopy the same day...it was a bad day for me)

David Z

I'm going to see if I can head into work for the session, and ping me if there's anything to put on the agenda.

BAYMAX

Oh

0ßelö7

Chaos is one of those pop sci things that I find absolutely boring

Actually most things that are popular in pop sci are really damn boring

BAYMAX

Ok

Okk

three paradoxes of Photoelectric effect

0ßelö7

Boring

BAYMAX

15:46

1) emission of photoelectrons as soon as light of certain frequency is incident on the metal surface.

Balarka Sen

Lyrics (official; azlyrics.com)

Ayy ayy
Ayy ayy ayy ayy (lmao)
yeah-yeah

Cancer!
You're a tiny dancer cancer

We didn't start the cancer
It continues growing with the posts you're flagging

BAYMAX

2)Energy independent of intensity

Balarka Sen

Available on Spotify.

BAYMAX

"I am Po and I'm gonna need a hat"

Anonymous

@BalarkaSen Welcome back...:P

0ßelö7

15:52

@BalarkaSen hi

What math have the Russians done that is useful

Balarka Sen

nothing has changed between us

0ßelö7

???

Anonymous

"An event is starting in 7 minutes in The h Bar - "Physics chat session"....are we topic-less as usual?

0ßelö7

Yeah

Chat sessions have been pretty empty lately

Balarka Sen

@0ßelö7 dude the Russian school of topology and algebraic geometry is a thing

0ßelö7

15:53

@BalarkaSen please delete this

Balarka Sen

as you wish

John Rennie

→ 1 message moved to trash

Balarka Sen

omg that was flagged

what is this, 9gag?

0ßelö7

Not me

I promise

John Rennie

No, that was a pre-emptive deletion.

Balarka Sen

15:55

ah

i really enjoy the 30 minutes of epsilon more productiveness though

ACuriousMind

@BalarkaSen Must I remind you that you shouldn't insult others here, even in jest? I get that it's supposed to be harmless banter but it is simply not the kind of conversation SE chatrooms are supposed to host.

John Rennie

Flaggings aren't good for the reputation of the chat room

Balarka Sen

@ACuriousMind Ok lol I'll desist.

Avantgarde

@Balarka have you heard Agalloch?

John Rennie

@BalarkaSen: and as for the We Didn't Start The Cancer meme that plumbs the depths of bad taste even by the standards of this chat room :-)

Balarka Sen

15:58

hahah sorry i couldn't resist not posting that meme

0ßelö7

Are you saying this chat has bad taste?

Balarka Sen

after all there has been tons of pointless flags going around both this and the math chat for the few weeks

0ßelö7

We can't even call each other cigarette butts without people getting upset

Balarka Sen

@Avantgarde Not yet

John Rennie

Cigarette butt? :-)

0ßelö7

15:59

@BalarkaSen topology in the 20s and 30s

I don't know/care about topology after that. I doubt they had any good Differential topologists

Balarka Sen

rokhlin

i dunno what a differential topologist means

nobody does differential topology

0ßelö7

In the 60s they did

Balarka Sen

anyway whatever you understand as a topologist, Rokhlin is one of them

0ßelö7

Russian math is dead today. I'm talking about old school 20th century stuff

Avantgarde

@BalarkaSen Should listen, sometime. Putting the link of the gem here: youtu.be/wnk2-Jctg6A

0ßelö7

16:00

Arnold style math

Pretty awful stuff

Balarka Sen

Arnold is Rokhlin's student lol

ACuriousMind

@BalarkaSen I don't know about math but the flags in this room are not all facetious - y'all (=some of you) like to skirt the line here, intentionally or not :P

In any case, the chat session has officially started, and I guess we haven't got an agenda unless @DavidZ has something I don't know about

Balarka Sen

@ACuriousMind I'm pretty sure responding to someone's "X is trash" comment with "no u" is not offensive.

John Rennie

@Avantgarde Hmm, that's pretty good

Balarka Sen

But yeah, I guess I do often troll the system.

David Z

16:02

@ACuriousMind nah nothing from me

0ßelö7

@BalarkaSen have you read Arnold's mechanics book?

Balarka Sen

Nope but I am reading his ODE book

has 0% proof, but seems good for a reading course

0ßelö7

No one does ODEs

David Z

Anyway, yes. The session is officially started, but if we don't have anything in particular to talk about, how about just dispensing with the standard boilerplate today?

If anyone is new to chat, new to chat sessions, or new to the site, please feel free to pipe up and say hello and/or ask questions, but other than that, if nobody minds, let's just have open discussion as usual.

0ßelö7

@BalarkaSen I only vaguely remember what Rokhlin's theorem says because it's completely out of my area, but is the proof really sketchy?

Balarka Sen

16:06

It's a seminal result in the theory of 4-manifolds, and no, the proof is the very opposite of sketchy.

It's really nontrivial to prove.

0ßelö7

So then it's not done in the Russian style?

Balarka Sen

Depends on how broken your idea of Russian style means!

BAYMAX

Is inertial frame possible?

0ßelö7

Arnold has a proof of an incorrect version of Huygens principle without ever talking about the wave equation

David Z

@BalarkaSen for the record, while that might not quite rise to the level of "offensive", I'd advise against it. Both the original comment and the response would be a little out of line in that case.

0ßelö7

16:08

That's what Russian means to me

BAYMAX

Like yes Earth is considered as an inertial frame

0ßelö7

His proofs are almost more like thought experiments than actual proofs

Balarka Sen

Arnol'd has 0 proofs in his ODE book

BAYMAX

"I am truly a lone traveller and never belong to my country,my home,my friend or even my family with whole heart"@JohnRennie

Balarka Sen

he's not the best representative of Russian mathematics

but still pedagogically pretty good

0ßelö7

16:12

Besides Arnold I have two Russian books. One on Differential topology/surgery with a view towards Ricci flow and one on semigroups and heat kernels

They are very rigorous

John Rennie

@BAYMAX no idea

0ßelö7

Although the topology one does the usual topological shenanigans

Balarka Sen

@DavidZ Sigh. Alright, fair enough.

BAYMAX

hmm

Jasper

I am new to chat sessions. Can someone summarise in one sentence what it is?

Anonymous

16:16

@Jasper In chat sessions we discuss recent discoveries, ask new users to introduce themselves, talk about site moderation/management, etc..

David Z

@Jasper Sure, it's a regularly scheduled time for people from the Physics SE community to get together and discuss... anything we want, really, although normally there are some standard things we go through as @Blue mentioned.

Anonymous

However, often we don't have topics to discuss :P

Jasper

@0ßelö7 Is the one on differential topology written by Kosinski?

BAYMAX

Well,hi all I am BAYMAX and I am not new here but new to chat session.

David Z

Welcome @BAYMAX

BAYMAX

16:18

Thanks@DavidZ

Light is WAVICLE

Jasper

@BalarkaSen I don't like Arnold's books because although he is famous, his proofs seems handwaving to me.

Balarka Sen

He has no proofs in his ODE book

Literally none

They are not really meant as formal textbooks, just staple foods that are good for you, like vegetables

BAYMAX

Is it V.I.Arnold?

0ßelö7

@Jasper yes

Jasper

@BalarkaSen Really? I must have forgotten. I thought there are proofs but they are just not marked as such.

0ßelö7

16:21

That's what Federer does.

BAYMAX

is that the book on Mathematical Physics?

0ßelö7

That book is interestingly written

Balarka Sen

I think there are a few in the appendices where he deals with uniqueness and existence of solutions to ODE's with various regularity

David Z

@BAYMAX FWIW this is a slightly atypical chat session. We often don't have much to discuss but most times we will go through a more structured introduction and we'll mention some recent developments in physics. Today it's very low-key though (because I didn't get here in time to do a proper intro :-P).

BAYMAX

I see

Jasper

16:24

Oh today is International Talk Like A Pirate Day, but let's not do that now, lol.

Balarka Sen

arr

David Z

surrrrrrrre :-P

John Rennie

@Jasper No free doughnuts though

Balarka Sen

@Avantgarde I am pleasantly surprised that the guy who wrote and sang sappy songs like this turned out to be one of the artistically notable postmodern rock artists later :P

(Actually, I like that song, but I wanted to call it sappy to sound edgy)

David Z

On a totally new topic, did anyone follow the Cassini finale?

John Rennie

16:40

@DavidZ didn't we all?

Though I guess it was inconveniently early for people in the US

Emilio Pisanty

@DavidZ planned to but didn't

@JohnRennie Talk Like A Pirate Day is still running? I thought Mad Cap'n Tom had drifted out to sea

David Z

@JohnRennie Yeah, unfortunately I missed the actual end - it was something like 4 AM for me and I had to get up early

Emilio Pisanty

@DavidZ so you're back stateside?

David Z

I'm hoping the mission control feed is up on YouTube

@EmilioPisanty yeah, been back for a while now. I just started a new job in California though.

so I'm no longer an east-coaster

Emilio Pisanty

@DavidZ oh, you're at SoundHound? nice

I had noticed you left the academia rollercoaster bud that didn't register

David Z

16:43

ha, I see someone's been trawling my profile :-P Yeah, it took a while to get here after finishing my postdoc

John Rennie

@DavidZ It wasn't that interesting if I'm honest. Given there was no live video and the long time lag the actual impact passed almost unnoticed.

David Z

@JohnRennie hm really? I thought there was a live stream from the control center

John Rennie

@DavidZ no live video from Cassini I meant. I'm not that interested in live video of NASA engineers :-)

David Z

@JohnRennie Oh. Well I am interested in video of engineers.

Though not interested enough to stay up until 4 AM, I suppose

John Rennie

Anthropological studies of engineers :-)

David Z

16:46

lol

Emilio Pisanty

@DavidZ "trawling" is a weird description

considering it took two clicks and it's the first thing under your name

David Z

yeah, kind of intentionally so

also the ":-P"

Emilio Pisanty

@DavidZ so.... are you in charge of the soundhoundy magic algorithm?

I'm a pretty assiduous user ;-)

David Z

oh sweet! Nah, I'm not in charge of anything yet, I've been here a week

I'm working on the Hound backend (the voice assistant)

Emilio Pisanty

@DavidZ how'dyou mean, voice assistant?

David Z

16:53

Have a look: soundhound.com/hound

It's like Siri or Alexa or so on

Emilio Pisanty

ah, gotcha

makes sense for soundhound to have a go at voice recognition

are you on the voice recognition, or on what happens with the text once it's been identified?

David Z

Yeah apparently they've been working on it for a long time - like ~10 years

@EmilioPisanty the latter. I believe I'm technically on the natural language understanding team

Emilio Pisanty

@DavidZ ah. nice.

David Z

although they're not big on titles here so it's a little fuzzy

It looks like really interesting work

Emilio Pisanty

well, kudos on a job well found

David Z

17:01

Thanks! I have high hopes for this one

It might actually come up again because the first thing they have me working on (just as a learning project) is enabling Hound to answer questions about particle physics

simple stuff like elementary particle properties

or whatever seems appropriate

Anyway, our scheduled chat session time is over. We'll have another one in two weeks; hope to see everyone back then!

Anonymous

17:17

@DavidZ That sounds really interesting. :)

David Z

17:27

Yeah, agreed. It'll be a little tricky figuring out how to accurately answer some questions without overloading users with detail

Avantgarde

@BalarkaSen oh this is good! I often love sappy songs

@JohnRennie Yep! Nice album there. You've heard Agalloch before then?

Just discovered a day ago that the ex-guitarist (because Agalloch disbanded) is an English professor at a New York college!

Balarka Sen

17:59

@Avantgarde This is my Saturday morning jam.

It's kinda confusing how these two guys are the same persons lol

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