Mathematics - 2013-06-01 (page 2 of 2)

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Peter Tamaroff

21:11

@robjohn

Gigili

21:57

Hullo.

What's the difference between a polynomial being zero and being identically zero?

Peter Tamaroff

@Gigili Identically zero means it is the zero polynomial, that is, each coefficient is zero, so $p(x)=0$.

What do you mean by "The polynomial is zero"?

Gigili

@PeterTamaroff I don't know. I was just wondering why the book is saying $f$ is identically zero and not simply saying it is zero.

Thank you.

Peter Tamaroff

@Gigili Well, it is because the former is precise, and the latter is vague.

A polynomial doesn't equal a number, unless you evaluate it at a root, say.

Gigili

Yeah, I got the point.

@PeterTamaroff Uhum. Great, thanks.

Peter Tamaroff

@Gigili You don't drop here often now.

Gigili

22:01

And do you know what property does it have when it's an integer polynomial?

Peter Tamaroff

@Gigili Integer coefficients.

Gigili

That clears things up.

One last question, Peter. Do you know what exactly is meant by the word certificate in the context of computational complexity?

Peter Tamaroff

@Gigili =)

Gigili

Umm, smile?

Peter Tamaroff

I'm sure you'll understand that better than me...

Gigili

22:05

A reversed smile?

Peter Tamaroff

@Gigili That's clearly a smile!

Gigili

Ha! OK, thank you for your help.

Peter Tamaroff

@Gigili No worries. That'll be three cookies and a cake.

Gigili

They're all prepared for the one who answered my questions. Enjoy it.

mick

I support skullpatrol

Gigili

22:08

Bye for now @Peter.

Peter Tamaroff

@Gigili Bye.

mick

@Charlie hi

@PeterTamaroff hi

@robjohn hi

@Chris'swisesister hi

Chris's wise sister

@mick Hi

mick

hru guys

I asked a new question today.

I Always do when I enter chat :)

@Chris'swisesister hi , hru ? what are you doing ?

Chris's wise sister

@mick I'm always working. How about you?

mick

22:16

@Chris'swisesister I asked a question today

Im learning retard smile

Chris's wise sister

@mick I see. I wish you have luck!

mick

@Chris'swisesister Did you see my question ?

Chris's wise sister

@mick no.

mick

Here it is
http://math.stackexchange.com/questions/408822/solving-f-n-expf-n-1-where-is-my-mistake

@Chris'swisesister

Chris's wise sister

@mick your math is too advanced to me.

mick

22:20

@Chris'swisesister you have 11.5 k !

im just 1300

Chris's wise sister

@mick do you wanna make a deal with me?

mick

@Chris'swisesister lol trade ?

Chris's wise sister

@mick yeah, sort of.

mick

im only 14 , im not sure if such deals are legal :)

@Chris'swisesister

Chris's wise sister

@mick now, look at $$\prod_{k=1}^{\infty}\frac{k^2+k+1}{k^2+k}$$ Compute it straightforward in one line (because is possible) and then I attend any problem you want.

mick

22:22

yes ? @Chris'swisesister

in one line ? @Chris'swisesister

Chris's wise sister

@mick yeah, you read very well.

mick

at this hour ?

Chris's wise sister

@mick at this hour? No, during this year.

mick

I was planning to go to bed. is it telescoping i need ?

Does compute allow the result in terms of gamma function ?

@Chris'swisesister

Chris's wise sister

@mick compute it precisely.

Peter Tamaroff

22:33

@Chris'swisesister Shouldn't be too hard.

Chris's wise sister

@PeterTamaroff agree

mick

@Chris'swisesister is it 29/16 ?

Peter Tamaroff

I don't think that works.

Chris's wise sister

@mick which problem are you referring at now?

mick

@Chris'swisesister your product of course

Chris's wise sister

22:37

@PeterTamaroff that is not a summation. :-))))

mick

@Chris'swisesister do you know the result yourself ?

i bet 29/16 IF rational that is.

Chris's wise sister

@mick how much you bet?

mick

@Chris'swisesister 2 rep :)

but you did not answer my question :) do you know the result ??

@Chris'swisesister

Chris's wise sister

@mick sure.

mick

@Chris'swisesister what is it ?

@PeterTamaroff why you say that ?

Chris's wise sister

22:41

@mick 2.428189792098870

mick

@Chris'swisesister those are just digits , give the closed form

Chris's wise sister

@mick OK - $\displaystyle\frac{\text{cosh}\left(\frac{\sqrt{3}\pi}{2}\right)}{\pi}$

mick

@Chris'swisesister I give up , show me how you did it.

Chris's wise sister

@mick I think it's better for you to let you think of it. It's a simple question.

mick

@Chris'swisesister is it ?

no telescoping or factoring ?

I do not think its simple considering it has cosh in it

Chris's wise sister

22:48

@mick I'm going to sleep right now ("naked" as you suggested in a previous comment)

:-)

bye

mick

@Chris'swisesister you drive me crazy !!

she drives me crazy ! :)

outragous :)

Alraxite

23:13

robjohn

@PeterTamaroff hey

@mick hi

OmnipresentAbsence

Hey people, does anyone have a suggestion how to make a powerpoint for mathematical purposes? I have tried using MS powerpoint 2003 (I don't have newer versions..) and the built-in equation editor is absolutely terrible. Problem is that I have to do it on my teacher's pc so I can't download programs

Bageer

@OmnipresentAbsence Does your teacher have LaTeX and more specifically Beamer?

@omnipresentAbsence If not (and you are willing to learn a bit of LaTeX) you could probably use writelatex.com.

OmnipresentAbsence

If you mean a beamer as in a video projector, yes.

Bageer

@Omnipresent Not a video projector, Beamer is a LaTeX package that is used to make presentations.

OmnipresentAbsence

23:27

I have to give this presentation the day after tomorrow so I'm afraid I'm not able to learn a lot of new stuff

I'm quite sure he has not

BenjaLim

@robjohn Hey

robjohn

@BenjaLim 'sup?

BenjaLim

@robjohn Supposed to have studied for a differential geometry exam last night but instead didother shit like computing hilbert polynomials :D

Just woke up that's at least what I should be doing :)

@robjohn wat bout you?

robjohn

@BenjaLim just got back from an art fair with my wife.

Peter Tamaroff

@robjohn How are you, Robbie?

I was meaning to show you this

BenjaLim

23:31

@robjohn ah ok

Bageer

@OmnipresentAbsence Well that writelatex.com has presentation templates. You can see if that works out for you.

OmnipresentAbsence

@Bageer Yup I'm trying to figure it out using the template. Thanks!

Alraxite

Btw, the latex here just shows up as plain source code for me. Can anyone suggest something?

Bageer

@Alraxite Look to the right side of the screen for "LaTeX suppot for chat" link.

unless your talking about the main site, then I don't know

Alraxite

@Bageer Oh, thank you. And yes, I'm talking about chat.

Um, what is the difference between 'start ChatJax' and 'render MathJax'? Sorry, I'm a bit unfamiliar with all this stuff

I kind of don't understand the description...

Bageer

23:55

@Alraxite Not entirely sure, I typically just use start ChatJax. I think render MathJax just renders once so any new latex that might come to the page after you render you would have to render again, not sure though.

lets see $\LaTeX$

Yup, MathJax seems to do what I thought

ChatJax does a loop so any new latex that gets posted automatically gets rendered