Mathematics - 2012-09-10 (page 3 of 6)

"Oneboxing" is a great way to share content quickly in chat. It would be awesome if it would work with FooPlot (an online graphing calculator), that way we could share graphs in the Math SE site without having to screen shot, crop, and upload it. It would also be helpful if this could be implemen...

Jonas Teuwen

@WillHunting You immediately want to go for books. That's like learning how to swim at the olympic games swimming!

John Senior

@WillHunting Sometimes I like people to feel afraid of me :P

(but not you - so I will revert to my Gandalf-like avatar)

user19161

@JohnSenior Just wondering, your distorted face is not real right?

John Senior

3:28 PM

@WillHunting my face is not that distorted, at least

user19161

@JohnSenior OK. Because it is possible that it is real which is fine of course.

anon

I put some vanilla/caramel cream intended for coffee into a pina colada. Delicious.

user19161

Sounds like something only a girl would do, which makes me think all the more you are one.

4

user19161

The smooth manifolds book is terribly expensive though, at 99 US dollars... But it is also super thick, at 723 pages.

Jonas Teuwen

@JohnSenior Added more ignorance.

@WillHunting For me it is! Make them divergent please.

@anon Cream is never intended for coffee.

user19161

3:36 PM

@JonasTeuwen It is very interesting that ignorance sounds like arrogance. It is OK to be ignorant but not ignorant and arrogant at the same time.

John Senior

@JonasTeuwen nice

Jonas Teuwen

Ignorrogant?

anon

Says right on the bottle that it's for coffee.

John Senior

Is it considered good etiquette on MSE to change the mathematical meaning when editing someone else's question?

user19161

What happened to Henry? Did he vanish because his identity was discovered?

user19161

3:37 PM

@JohnSenior You should edit to fix formatting and grammar but not change the meaning from what the asker intended.

user19161

This applies to the entire SE network.

Jonas Teuwen

@anon Bottle lies.

@anon If a bottle says you should jump of the empire state building will you do it?

"Yes."

user19161

Hola @peter!

John Senior

@WillHunting Yes, I thought that was the case - just a bit curious about this one

Peter Tamaroff

@jonas lovely formula indeed..!!

John Senior

3:39 PM

I see the guy has edited back to what he had at first

Peter Tamaroff

@will imagen in my algebra class

*I'm

user19161

@JohnSenior But sometimes the meaning is so unclear that we should just comment asking for clarification instead of guessing it.

Peter Tamaroff

freaking autocorrect

John Senior

@WillHunting Yep - I have seen plenty of those :)

user19161

@PeterTamaroff Ah, then what are you doing here? Get back to class!

user19161

3:42 PM

They should have more options for changing the volume of the ping.

Peter Tamaroff

@will when computation kicks in, Peter kicks out

user19161

@PeterTamaroff Are you on a phone or laptop?

user19161

I guess phone from the way you are typing.

Peter Tamaroff

@will Phone, why?

user19161

@PeterTamaroff Nothing, see above.

Michael Greinecker

3:43 PM

Can 3k+ folks please look at this: math.stackexchange.com/questions/193636/…

user19161

@jonas If I want to make a free website to write mathematical stuff, what do you suggest? Which web hosting service should I use?

Jonas Teuwen

Dunno!

For free things you have to ask the Indian guys here.

robjohn

@MichaelGreinecker I do not. I did not remove them, but I know there were lots of flags on that question and they probably got deleted in the process of handling those flags.

anon

@MichaelGreinecker The OPs profile says they've been away for about half an hour. I'd rather give the OP more opportunity to edit in a real question.

Michael Greinecker

@robjohn Thank you!

user19161

3:48 PM

No wonder the ping was so loud, the desktop setting was 100 per cent. I thought I set 80 per cent. Spooky!

user19161

Someone in chat must be changing my setting while I am not looking...

Peter Tamaroff

@jonas I liked the pdf on berstein plyls. You bring in the LULZ!!

Jonas Teuwen

@PeterTamaroff 8-). The LULZ.

user19161

No, the LAWLZ!

John Senior

OK, I am dumb - where do I change settings for ping sounds?

Peter Tamaroff

3:53 PM

Up right thereisithere is a speakerphone

robjohn

@JohnSenior Sean's answer is nice.

user19161

@JohnSenior It can't be. I was referring to my comp settings. I was looking at the microphone symbol on the top right but no volume change there.

John Senior

@robjohn Yes - it is after he edited it - but it was a bit misleading before

robjohn

@JohnSenior Ah, I got there too late to be misled :-)

Jayesh Badwaik

@JonasTeuwen "When I feel like writing and do not know what to write, I write something like this. So, let us see. " I always have a lot to write, but I never feel like writing up something. :-(

John Senior

3:55 PM

@robjohn Yep - I do find it hard sometimes to see the relevance of some comments because questions and answers have changed before I get there - it is a minor irritation with the site software

Hmm taking longer than usual for my previous gravatar to come back ...

Jayesh Badwaik

@WillHunting What I am trying to do is, type out document in latex, convert them to html using tex4ht use beautiful soup to insert a mathjax script there. If you want, use something like nanoc to create a good index etc. Push it to a github repo named "username.github.com" your website will be rendered at username.github.com

user19161

@JayeshBadwaik Ah, I actually just want a normal site and link to PDF files. I guess one should use dropbox for the files?

robjohn

@JohnSenior It is there for sizes larger than 32x32

Jayesh Badwaik

owncube is a good option. as is dropbox.

MaoYiyi

sometimes on my rep I have a -10 and it says user was removed, what does that mean?

user19161

4:02 PM

@MaoYiyi It means the person who gave you 10 points deleted his account.

John Senior

@robjohn Great :)

Py42

Can you ask math questions here or only in the site?

robjohn

@MaoYiyi that means a user who had upvoted some of your answers and/or questions was removed. I just lost 230 today.

MaoYiyi

@WillHunting but why do we lose those points?

user19161

@MaoYiyi Because no account means no votes.

MaoYiyi

4:04 PM

ok.

robjohn

@MaoYiyi so that if the person comes back and upvotes the same questions/answers, it does not mess things up.

user19161

@Py42 You are supposed to ask them on main. Chat is reserved for really trivial questions like 1+1=?

Py42

ok thx

robjohn

@Py42 You can ask questions here, but people don't get reputation here for answering questions.

John Senior

@Py42 also there is less chance of getting an answer here, unless guys like anon and robjohn are here - especially if you want help with something advanced

Realz Slaw

4:11 PM

hi, should I be answering old questions?

like questions that probably won't be useful to the author any longer

Jayesh Badwaik

@realazthat If you want to and it is beneficial for you, I cannot see any reason why not. And even though the author may not be interested, other people might be.

anon

Why not? You can even get a badge or two if you resurrect old things enough. As long as you're contributing to the overall quality of the site by being potentially and reasonably useful to someone somewhere.

realazthat

ty

user19161

@JohnSenior Or John Senior.

robjohn

@realazthat don't worry about downvotes. There is sometimes no good rationale for some downvotes and often the people don't even comment as to why they downvoted.

John Senior

4:19 PM

@WillHunting I'm pretty low in the pecking order for giving useful answers ...

realazthat

@robjohn ok, ty

user19161

@JohnSenior I refreshed and saw your new old avatar. Phew! Now I won't get nightmares.

John Senior

@WillHunting :)

user19161

The mean square never gave me nightmares though. :-)

John Senior

I'm confused (again!) - is this guy trying to prove he has a group, or that the operation is abelian?

robjohn

4:28 PM

@JohnSenior perhaps both?

John Senior

@robjohn But I vaguely remember there being finite non-abelian groups ...

user19161

@JohnSenior I happen to remember that too!

John Senior

@WillHunting Phew :)

robjohn

@JohnSenior Like 2x2 matrices over $\mathbb{Z}_2$

John Senior

@robjohn more original than my boring example of permutation groups

robjohn

4:32 PM

@JohnSenior both are good.

user19161

I have a soft question. Do you guys think that people are often good in algebra or analysis but not both?

robjohn

@WillHunting yes

user19161

@robjohn I wonder why if that is so. Knowing why could help one be good in both, perhaps.

robjohn

@WillHunting I suck at algebra

user19161

@robjohn Same!

John Senior

4:33 PM

@WillHunting yes

@WillHunting my algebra is pretty weak

user19161

I am thinking, this could be due to different thought patterns.

user19161

If we can fix the thought patterns then we can excel at both fields.

John Senior

I think my weakness in algebra might be due to my thought-processes being very visual

and not sure I can ever change that

user19161

@JohnSenior Yes, it is hard to visualize algebra unless one is talking about things like symmetry groups.

John Senior

@WillHunting yep -I find things like Dedekind domains impossible to visualise

I'm currently struggling with things like fractional ideals in ANT - and not doing very well at all

Jonas Teuwen

4:37 PM

@JohnSenior I have a new personal website domain name :-))).

sharingmylackofunderstanding.nl

John Senior

@JonasTeuwen do tell us

Jonas Teuwen

Need to set up DNS and such.

user19161

@JonasTeuwen Trying to connect now...

Jonas Teuwen

@WillHunting Check the line above your line.

user19161

@JonasTeuwen OK, I am comp idiot!

Nimza

4:40 PM

Good monday!

user19161

@Nimza Hello! Good every day!

Nimza

Help me please, If I want to ask a question about algorithm of finding connected compontents should I use stackoverflow or cs.stackechange site or whatever?

user19161

@Nimza It depends on which topic the question is primarily about. It could even be asked on math.

user19161

So you will have to look at the exact statement of the problem and then decide.

Nimza

@WillHunting no, it isn't appropriate on math I think: I have a rectangular net and a polygon on it with self-intersections given by a list of successive edges. And so a want to mark nodes

user19161

4:46 PM

@Nimza I don't know about this area, but I do know that algorithms are part of mathematics. :-)

2

user19161

For example, we have the famous...Euclidean algorithm.

user19161

If the question is about the algorithm itself, it is mathematical. If it is about how to implement that algorithm, it is programming.

Nimza

The question is about the algorithm itself, but I think that computer science deals with such algorithms?

user19161

Hmm, I don't really understand your question, so I have no further comment. Maybe someone else can help you.