Mathematics - 2012-05-31 (page 2 of 5)

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12:00 PM

How can you look at those on an unbounded interval?
I saw that the first hermite polynomials were, 1, 1-x^2, and those diverges. I guess it is only me who is confused.

It is people like Jonas that make me think I need to stop doing math because really he represents the majority of math people pretty well. The people who laugh at you for asking a question in class because they are naturally good at math and have to put very little effort into succeeding in class

I`ve never seen Jonas do that?

@Jordan shut up, please. Don't be miserable

@N3buchadnezzar he never did

He told me I should drop out of school because I had to take calc 1 twice

@Jordan So, why care?

12:03 PM

@Jordan I agree with the sentiment but please mind your language :)

@N3buchadnezzar I see now that I''ve forgotten many of these things. But it seems that Legendre polys are orthog on [-1,1], unless I misread about them

Your fellow mathematicians really seem to mind it.

@mixedmath Thanks I will look into those =)

Let's all be friends!

@badp: rather really mind it when applied to users of this chat. Especially when the first time didn't tell anything Jordan

12:05 PM

@OrigamiRobot You don't seem to be affected by the song in the slightest

@OrigamiRobot Bmo looks like a calculator :D

@Jordan: you still have cosine in the denominator here so how would you tell me that you fixed that?

@badp: when the message is flagged, is it always that 5-6 moderators come to a room?

@Ilya It shows it to all 10kers.

Yep, everybody on chat with 10k reputation on all sites gets a bubble in a corner of their avatar next to the textbox

How can one see who are moderators ? =)

12:07 PM

Mods' names are in blue on chat

bah, too slow.

@N3buchadnezzar Or on a simpler note, I believe 2t + 3 and 5t2 + t − 17/9 are orthog on -1,1 too

their names are in blue

@OrigamiRobot so there are so little flagged messages?

@Wipqozn :D

@Ilya In here anyways.

EEEk!

12:07 PM

@Ilya It's like the reply notification, but in a different color and corner of your avatar

Hides my dirty magazines, and dead rabbits

@badp I am charging a cell phone. It's concentration, not anger.

Colors vary from site to site

@badp I saw that a couple of times - but I thought it only refers to a room where you're currently in. Because it was too rare for the whole SE network, I think :)

@Wipqozn ...turtle joke

12:09 PM

@Ilya I think it shows first to people in the very room to allow people to take "local decisions" based on each room's standards

@N3buchadnezzar DEAD RABBITS !!!

@mixedmath Weighted against what?

but I'm not quite certain about that

@badp: thanks for the thought :)

(It's a conjecture, there's no proof.)

12:09 PM

@N3buchadnezzar trivial weight

@badp still, it clarifies

user image

I know I forgot to square the last one, but still they are not the same. What am I missing ? ..

When I interpret orthog, I want $\int_{-1}^1 fg w(x) dx = 0$

Sorry for the confusion...

where f, g are the two fns, w(x) is the weight fn

is that what you meant?

12:12 PM

I was actually looking for a orthonormal set...

Blames my english, and hides in a corner

@N3buchadnezzar set?

oh - about that

@mixedmath any advice here? math.stackexchange.com/questions/151991/…

@N3buchadnezzar ...in a corner with dead magazines and dirty rabbits

@BenjaminLim an advice would be: do analysis, not algebra :)

12:14 PM

niet @Ilya

My work here is done.

$\langle f,g\rangle=0\,,\,\langle g,g\rangle = \langle f,f\rangle = 1$
No idea what that is called... =(

@BenjaminLim I read that earler, and it reminded me of my first few math talks. I tend to try to make a very welcoming environment and encourage lots of questions. I usually even try to get people to be willing to interrupt me (for smallish audiences). That way, I worry less about my speed. I tend to talk too fast too, and this way I'll have a quick reminder if I do.

But everyone does it differently.

@N3buchadnezzar do you need to find only 2 such functions?

My only common bit is that anything important should be written out fully, whether via a slide or on a blackboard. This way, all the people who are a bit behind won't be left further behind because they weren't hanging on every word. When I go to talks (that I might understand), I try to work through parts or justify things to myself. Then I have to catch up a bit. It's really nice if there's a clear map for me to do that.

12:18 PM

@Ilya yes! I have already found that if $w(x) = \frac{2}{\pi}$ and $C[0,\pi]$ then sine and cosine works. But I have not been able to find other functions with these properties..

Speaking of "Do analysis, not algebra" - I think there's a handy advantage to analysts. Because during talks, no one really wants to see exactly why whatever terrible estimate or hideous inequality gives such and such a result, so you can brush all those hard details aside. But with algebra, people seem so eager to apply whatnot idea and such and such a form to justify what's said. ;p

tongue a bit in cheek, I suppose

@BenjaminLim In my opinion, the most important thing to remember is never talk down to your audience.

Deppends on how high the stage is. HAHAHAHAH.... Hides the corner again

with dead magazines and dirty rabbits?

-4

Q: PIE query for last digit

I came to know that PIE is a number and its value has yet to be found as to where it ends Can anyone tell me upto what extend the computers have been able to find the end digit

irrational-numbers pi computer-algebra-systems

12:26 PM

Hi @YAK

Please reoepn the question

@skullpatrol: hi

@YAK Why care? You have the answer...

Do any of the guys know how to crack GRE now a days

Still @Skullpatrol:

@YAK Still nothing. This is a question and answer site, and you asked a question and got an answer period.

GRE?

12:31 PM

YEs

I just find it hilarious how people like Jonas assume anyone who has trouble with math just needs to try and do their homework and work at it, like I have never tried that before

@Ilya The green 4k Didier is the same as the grey high-rep did.

By far the worst part of math is puting up with people like Jonas

RegDwight ΒВBẞ8

@YAK Duh. PIE is not a number. PIE is a language.

@Jordan Well have a good laugh and move on.

12:34 PM

I don't let people talk down to me, I usually like to put them in their place first

If you don't defend yourself like that you just invite more attacks

Why care here?

We are on the internet, remember?

the internet is just as real of a form of communication as anything else, the sentiment is the same

Paramedics wanted.

Only in YOUR mind.

RegDwight ΒВBẞ8

Why do you say that the internet is just as real of a form of communication as anything else, the sentiment is the same?

12:36 PM

Because it is

Check out

-4

Q: Pi query for last digit

I came to know that PIE is a number and its value has yet to be found as to where it ends Can anyone tell me upto what extend the computers have been able to find the end digit

irrational-numbers pi computer-algebra-systems

RegDwight ΒВBẞ8

Why do you say because it is?

@RegDwightB8:

There is no reason it would be any different

Check out now

12:37 PM

Why do you say why?

@RegDwightB8:

RegDwight ΒВBẞ8

@Jordan Gosh. Someone's not getting jokes.

Here's a whoosh for you.

@Jordan Stop picking on Jonas pal :(

I just hope people like Jonas get banned from this site

Because talking down to people isn't really useful on a site like this

RegDwight ΒВBẞ8

ELIZA is a computer program and an early example of primitive natural language processing. ELIZA operated by processing users' responses to scripts, the most famous of which was DOCTOR, a simulation of a Rogerian psychotherapist. Using almost no information about human thought or emotion, DOCTOR sometimes provided a startlingly human-like interaction. ELIZA was written at MIT by Joseph Weizenbaum between 1964 and 1966. When the "patient" exceeded the very small knowledge base, DOCTOR might provide a generic response, for example, responding to "My head hurts" with "Why do you say your h...

12:39 PM

@Jordan You might get banned first.

@Jordan I bet you'll be banned much faster

I'll take that bet

RegDwight ΒВBẞ8

When ELIZA didn't know how to respond, it would simply prepend a "Why do you say..." to your lines.

@MattN: go gtalk

I don't think this conversation is constructive. Move along, hmm?

12:40 PM

@mixedmath second it

Third

RegDwight ΒВBẞ8

Pied.

4th

5

6

8

RegDwight ΒВBẞ8

Pie * 3.

7

infinity........................................................................‌.................................................................................‌......

RegDwight ΒВBẞ8

12:42 PM

×

What happened to that german kid ? I have not been reading that topic for a while.

@N3buchadnezzar the one who wanted to become an artist but conquered Europe in 40s?

@Ilya The one who "discovered" the closed forms of some newtonian DE`s

I recall there was a lot of fuzz about on the site a few days ago.

@Jordan dreaming?

@N3buchadnezzar Maybe he's reading some dead magazines and playing with dirty rabbits :D

12:46 PM

@N3buchadnezzar ah, that one I didn't hear about. Anything interesting?

Nah, just another whiz kid who thinks he's Einstein...

@Ilya See here

Hi @ClarkKent

user19161

@skullpatrol Hi!

user19161

I came here after getting a flag.

12:49 PM

Call for votes.

@ClarkKent It was me "I surrender" waves white flag :D

user19161

@skullpatrol I notice that females tend to flag more in SE chat rooms.

@ClarkKent How observant of you Homes ;-)

RegDwight ΒВBẞ8

@MattN really what you need is a "general reference" close reason.

@RegDwightΒВBẞ8 :) duplicates works well

RegDwight ΒВBẞ8

12:53 PM

Not quite.

What the bloody holy cow monkey is going on here?

@RegDwightΒВBẞ8 Close "general" questions in mathematics?

Gauß.

RegDwight ΒВBẞ8

"Duplicate" means, this crap will stick around forever. "Gen ref" would mean, you can kill it off for good.

@RegDwightΒВBẞ8 well, if a person cannot just google something - what can we do

user19161

12:53 PM

@JonasTeuwen Nothing. Jordan said something, someone flagged it and I came to take a look.

RegDwight ΒВBẞ8

@Ilya exactly.

You have not studied mathematics to google stuff for people.

That's what you study physics for.

4

Haha.

@ClarkKent Was it interesting?

user19161

@RegDwightΒВBẞ8 No, that's what you study computer science for.

@ClarkKent oh, how boring. You just repeated his joke

user19161

@JonasTeuwen I think he called you shit or something, but I can't recall.

12:55 PM

Oh, right.

Who starred "That's what you study physics for."?

RegDwight ΒВBẞ8

A physicist. Who googles stuff for people for a living.

user19161

@Ilya No, physics not equals computer science. You are so interesting!

@RegDwightΒВBẞ8 you're too fast!

user19161

@MattN Not me, I don't do stars.

12:56 PM

@ClarkKent do you find me interesting? still thinking I'm a female?

3 stars? Seriously?

Whatever.

It has been a very long time since I've felt insulted :-(.

user19161

@Ilya No, I think you are male but I think skull is female.

RegDwight ΒВBẞ8

@MattN if that's not enough, I can pin it for two weeks.

@JonasTeuwen I can try if you like... : )

12:56 PM

@RegDwightΒВBẞ8 do me a favour

@MattN Na, you know too much.

@MattN come'on - I've added 2 more people from this room to my ignore list - and you care about a starred message?

Not that I will feel insulted, but I'm a bit... worried what you will say 8-).

@RegDwightΒВBẞ8 No thanks, it's ok, I don't think it's funny at all. I was just wondering what sort of person would star it.

@MattN I would star it. I like to star nonsense.

user19161

12:57 PM

@JonasTeuwen Better to be abused by people on the internet than in real life.

@JonasTeuwen I would obviously not use anything I know.

@JonasTeuwen and.... here you go! nonsense!

@MattN Then you will fail in insulting me!

RegDwight ΒВBẞ8

@MattN looks like you misunderstand the purpose of stars.

A star doesn't mean "this is funny".

@ClarkKent Well, yes, but in real life it is usually harder.

12:58 PM

@MattN that's not the right way of living. You should learn stuff and use it!

user19161

@RegDwightΒВBẞ8 Stars are for lighting up the sky at night.

@Ilya Well well. Soon there will be no one left to add to my ignore list...

@MattN But then at least people stfu!

@MattN I wish they could be banned

Why? Where would we be without some doerak's that make things funny?

12:59 PM

@Ilya : P Where's the challenge here?

Then we would be working all day, can you imagine that...?

@Ilya Me too but they can't. But maybe we could bully them til they leave?

@JonasTeuwen I don't add people to the ignore list if they are stupid but funny

So funny stupid people are okay?

sure, they're usually not agressive

1:00 PM

Funny because they are stupid or they are funny and stupid?

RegDwight ΒВBẞ8

Stupid and true.

@JonasTeuwen Either, probably.

well, it's hard to distinguish

@RegDwightΒВBẞ8 Beware: The owls are not what they seem.

2

user19161

@JonasTeuwen Ah, you use okay instead of OK too. I always use OK.

1:01 PM

1 star for recalling Lynch, @Matt

@ClarkKent Which is the right one?

user19161

@MattN That got two stars so fast?

@JonasTeuwen ok

RegDwight ΒВBẞ8

in English Language and Usage, Jul 15 '11 at 19:58, by RegDwight

"I changed my gravatar to a viscacha and all I got was all hell breaking loose and NO STUPID T-SHIRT!"

@ClarkKent I have 2 users

1:01 PM

Some good ol' lynchin'?

: )

user19161

@JonasTeuwen Both are fine, but the original word is OK. Okay is just how you pronounce OK.

Oh.

Kay

not oh

1:02 PM

What is the etymology?

user19161

The same applies to DJ and deejay.

Ok.

user19161

Or MC and emcee.

MC = Markov Chain!

Maybe it an abbreviation of the Dutch "okiedokie!".

user19161

1:02 PM

@JonasTeuwen Is that a Dutch word?

RegDwight ΒВBẞ8

@JonasTeuwen No, it's an abbreviation of "oll korrect".

user19161

Okiedokie sounds so sweet. I would love a girl to say that to me every day.

@ClarkKent Not an official one, but some people use it.

@tb Cute. I could pile on, you know. : ) (don't worry, I won't)

user19161

@Ilya Or medical certificate.

1:04 PM

I'm not Asaf's favourite? Are you focking me with me private at 0600 before I even had some gaddamn breakfast?

RegDwight ΒВBẞ8

23

A: Where did the term "OK/Okay" come from?

According to the OED, it's an initialism of oll (or orl) korrect, first seen in 1839, something apparently quite funny. It was reinforced by another initialism OK from the nickname of president Martin Van Buren, Old Kinderhook during his electoral campaign. The verb was null-derived from this aro...

All correct.

user19161

Check out these links at future-perfect.co.uk/grammartips/index.asp

user19161

OK okay is discussed there too.

Hello

1:07 PM

hi

@Nimza: hi

user19161

@Ilya Really? What is your other account?

@ClarkKent you

Advise me please some book with study of algebraic and differential Riccati equations

user19161

@Ilya You are so interesting!

1:10 PM

@Nimza maybe, main?

@Ilya what?

@Nimza on the main page :)

@Ilya ah, ask the question... ok :)

@JonasTeuwen somebody has starred this message of yours :) you have enemies in this room. stupid ones :)

@Nimza how are you?

@Ilya nothing interesting, and you?

1:14 PM

@Ilya 8-).

@Ilya Calling anyone "stupid" is an insult.

Enemies? I doubt it. I'm OK with everybody.

@skullpatrol If I call myself stupid am I insulting myself?

If you feel insulted about that, I guess you are having doubts about your own intellectual capacities...

2

@JonasTeuwen Well you're not exactly building your self esteem :D

I don't have any problems with that. More like, hah, I'm so stupid. Good!

How about "I'm such an idiot"?

1:18 PM

Doerak!

доширак

@Nimza :D

RegDwight ΒВBẞ8

Досирак, actually.

Hi @BillDubuque

@RegDwightΒВBẞ8 this version in Russian sounds like "the thing which makes you finish feces", sorry.

RegDwight ΒВBẞ8

1:24 PM

I know.

:D

RegDwight ΒВBẞ8

It's the original name.

In fact, it's quite the sense of it :)

RegDwight ΒВBẞ8

I take it to mean "he who finishes shitting".

@RegDwightΒВBẞ8 well, I tried to avoid s-word

1:26 PM

@JonasTeuwen Sorry : )

RegDwight ΒВBẞ8

@Ilya that's beside the point.

@MattN that was insulting. me neither!

RegDwight ΒВBẞ8

My point is that it's not "the thing that makes you" but rather "the thing that does"

@Ilya Yes, sorry : ) But I know he likes both of you, too : )

@RegDwightΒВBẞ8 oh, that I've missed

RegDwight ΒВBẞ8

1:26 PM

user image

@MattN he isn't like both of us. He is 53kg. Me and Jonas together are about 300kg. Mostly because of Jonas

RegDwight ΒВBẞ8

Don't make me post images of Blu Water.

do me a favour

don't do me any favours?

@Ilya Sorry, lack of sleep increases the amount of typos I make.

RegDwight ΒВBẞ8

1:28 PM

Go see for yourself.

@MattN I would tell you that even if you didn't make a typo

@Jonas: how big are you - about 220kg?

0_o

I'm about 150 I think

He looks quite slim.

@Ilya Hmm, yes, about 227kg.

1:29 PM

@Ilya What?? Don't believe.

What is going on here?

@MattN like Vogue slim?

@RegDwightΒВBẞ8 Татьяныч?

@Ilya I don't know what that is.

@MattN Me and Ilya are monstrous.

Like a bear.

: )

two like one

1:30 PM

Ilya and I

Oh, come to think of it...

Ilya ate one of our visitors :-(.

@JonasTeuwen sorry :(

RegDwight ΒВBẞ8

@Ilya он самый.

It's okay, I didn't like him that much anyway.

1:31 PM

@RegDwightΒВBẞ8 took you some time

@JonasTeuwen He tried to eat YAK

@JonasTeuwen I liked! with potatoes he went nice!

@JonasTeuwen blush (That comment had left me speechless. Now I've recovered.)

Haha.

We need more cow bells.

@JonasTeuwen What for?

1:32 PM

ding ding

@MattN For ding ding.

:D

@RegDwightΒВBẞ8 did you learn Russian?

RegDwight ΒВBẞ8

@Ilya I guess I did.

@RegDwightΒВBẞ8 are you Russian?

1:33 PM

@Ilya When did you learn English?

Going to sleep. x_x See you later.

later

@JonasTeuwen ding ding is the sound you use to call somebody for okiedokie?

@Ilya Hmm... Not yet...

@MattN Sleep eh...? Right. Have fun! 8-).

Hi @tb

You just missed Matt.

1:36 PM

hi

see that.

we have strange bounties these days...

and here's a dupe

RegDwight ΒВBẞ8

@tb This got reopened

further dupes: 1, 2, 3

@skullpatrol saw that, too. It's about to be closed again, though.

(again for a wrong reason, it seems, as Gerry edited the question into something else, so your answer is a better fit).

Thanks for the info :D

@tb: hi

1:47 PM

Hi, Ilya

@RegDwightΒВBẞ8 do you answer with a dance? :)

@Ilya If you want to ping me on the main site, you should use @t.b. the @tb doesn't work.

@Reg one more had a very cool crazy song "Танцы на Атомной Станции"

@tb ok

@Ilya No, he is dancing around your answer ;-)

RegDwight ΒВBẞ8

@Ilya I only know this one and the народное техно.

1:50 PM

@Reg: you person becomes more and more interesting to me

RegDwight ΒВBẞ8

The next local maximum is just around the corner.

So let's do a next step

RegDwight ΒВBẞ8

You are welcome to hang out in my very own room.

English Language & Usage: Multi-Layer…

Not for the faint of heart or those easily triggered by Englis...

@Ilya Why are you so eager to take it to the next level?

RegDwight ΒВBẞ8

First you have to pass the test, though.

in English Language and Usage, Mar 9 at 14:57, by KitFox

A Romanian shark walks into some Germans and says "hi."

You have to find this funny.

1:53 PM

it's not

true that^

RegDwight ΒВBẞ8

Then you are way too young, Padawan.

I am

@RegDwightΒВBẞ8 Who remembers why Germans call their march goose stepping?

RegDwight ΒВBẞ8

They do?

1:56 PM

@RegDwightΒВBẞ8 yup

RegDwight ΒВBẞ8

I only know Stechschritt.

Nothing with geese.

@RegDwightΒВBẞ8 be aware of skull. he is tricky

RegDwight ΒВBẞ8

He hangs out in the Incomprehensible Room all the time. I can handle him.

Der Stechschritt (eigentlich: 'preußischer Paradeschritt') ist eine spezielle Form des Gleichschritts, der gewöhnlich bei feierlichen Paraden und Vorbeimärschen geschlossener Einheiten demonstriert wird. Die Marschierenden schwingen dabei ihre Beine im Gleichtakt steif ausgestreckt aus der Hüfte hoch, je nach Land und Tradition fast bis zur Waagrechten. Im Stechschritt marschierende Truppen erzeugen zudem ein markantes, lautes Schrittgeräusch. Zweck des Stechschrittes ist die Demonstration absoluter Disziplin und Überlegenheit. Seine Entstehung wird auf das preußische Exerzier-Reglement d...

Da hastes. Stechschritt, preußischer Paradeschritt. Keine Gänse.

@Reg: please don't put wikipedia links here in that way - the way preffered is this one

RegDwight ΒВBẞ8

Mkay.

1:58 PM

@RegDwightΒВBẞ8 Translation please.

RegDwight ΒВBẞ8

@Ilya you are missing out on a lot of fun.

@RegDwightΒВBẞ8 being nerdy?

RegDwight ΒВBẞ8

in English Language and Usage, Feb 7 '11 at 15:17, by RegDwight

The Mariana Trench is the deepest part of the world's oceans, and the lowest elevation of the surface of the Earth's crust. It is currently estimated to be up to deep. It is located in the western Pacific Ocean, to the east of the Mariana Islands. The trench is about long but has a mean width of only . It reaches a maximum-known depth of about at the Vityaz-1 Deep and about at the Challenger Deep, a small slot-shaped valley in its floor, at its southern end. If Mount Everest, the highest mountain on Earth at , were set in the deepest part of the Mariana Trench, there would be of ...

such a trick

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