@robjohn I spend more work days in Hyde Park than I do in Evanston.

equidistant, I have never seen that word before

@DylanMoreland why didn't you move to chicago with your advisor?

I read a lot too and I have never seen or heard that word

@Jordan It means the distance between two things are the same.

why not just say that?

@Jordan Because it's a heck of a lot longer. Why not say "bunch of letters and numbers and symbols in a row" in place of "string" in programming? Same reason.

@robjohn Imo, not so subtly begging for votes is poor form

@DylanMoreland We will probably be going out to visit my son again during the next year. He is coming home for the last half of the summer, but we like to visit there. We have stayed in the Congress Plaza Hotel. It has a nice view

Hi guys.

@AlexBecker But everyone knows what string is, it is a very common word

It sucks that I need a dictionary and online resources to interpret my math book

@BillDubuque i take more of the MO approach to rep. it really means nothing

Equidistant is built up out of words that are quite common, I'd say.

@Jordan Not in most circles. I would have said the same thing about equidistant.

I mean, stuff you learn in high school. You also learn how to handle a dictionary there!

@robjohn Looks pretty nice. Good location.

@Eugene But it's nor fair to all the other members who don't particpate in chat

The good thing about a memory is that you only have to learn it once...

equestrian for horse and distant for a lonely feeling. Lonely Horse

Jonas we didn't all have parents that paid for private schools

@robjohn Hi mean square. I defined mean annihilators! 8-).

Private school? It was a public school.

We have like this public education in our country.

@Jordan So did I.

We don't really have a functioning public school system

@BillDubuque Sorry, I hadn't intended it that way, but I do see how it seems so. I will refrain from making comments of that nature in the future.

I graduated high school without learning anything at all, and I finished with geometry

@DylanMoreland actually why didn't you move with MattE to chicago?

@JonasTeuwen where did you define them?

@robjohn In my paper to be!

@DylanMoreland It is a nice hotel. It is supposed to be haunted, but we haven't seen any ghosts yet :-)

@JonasTeuwen "Definition: An anihiliator is said to be mean if..."?

@robjohn It's just that I think that people should vote based on the merits of the post, not to help someone achieve some silly badges

@robjohn I have a theorem which goes like this: A positive, symmetric mean annihilator generates a protective semigroup.

I studied 8 hours a day for my class and then reviewed about 40 hours over the weekend and still got a D. Hard to have motiviation in math when it never pays off

I can just put in an hour or two a day and get the same results

so I do

Math almost never pays off, that is like that nature of the subject, it is mostly hard work.

@Eugene I've met so many people in the last week that I'm a little sick of tabulating the reasons for and against. You understand.

@PeterTamaroff If it removes the mean of certain functions.

@Jordan If you are already given up, "working hard" is an empty statement.

Additionally it kills indicators.

@BillDubuque I already had the votes for the badge. I was only commenting that I was 40 shy of capping.

Which are like the small ones, so it is quite mean.

@DylanMoreland oh i'm sorry. i didn't mean to intrude.

@BillDubuque capping doesn't count for anything.

@robjohn Capping, badges, whatever, the point is still the same

I would like to get a job there after this, though. I like this city.

lol math jobs are very high paying

@JonasTeuwen Maybe it has something to do, or not, but I really like the anihilator method for solving ODEs!

some of the highest paying jobs in the US are math based

@Jordan F**k YEAH! =D

We talk about reputation here. It's boring, but it happens.

rep really isn't all that big a deal. once you get to 10k it's mainly something that looks pretty

@BillDubuque Let us have some fun Bill! (Though I think posts should be upvoted iff they are useful.)

You guys are arguing about some digital points which are actually devoid of any practical meaning? Wow. First world problems. Excellent, so that means you have no real things to worry about.

@JonasTeuwen HAHAHHAHAHAHAH

I would rather talk about almost anything else.

@PeterTamaroff Yes, that operator is like really manly.

unlike on MO where the first user to get to 100K points wins a fields medal

@JonasTeuwen Though that last thing is manifestly false.

@JonasTeuwen aren't you in the first world?

Makoto has edited this thing 43 times.

@Eugene Yes, Sir.

Truly he is our first post-reputation user.

@PeterTamaroff Yes. So?

@Eugene Perhaps, then, Rob will have a Fields medal soon...

@JonasTeuwen Just didn't find that last remark funny.

@PeterTamaroff The other possible explanation is that you are a whining bitch, and those people are not. So... by exclusion.

@DylanMoreland i wonder why he's so intent on proving to MSE that he can prove his own questions...

@JonasTeuwen What?

@BillDubuque Rob? who's that on MO?

@BillDubuque I am sorry that I gave the impression that I was trolling for 40 points. I really wasn't (I already had over 200).

@BillDubuque nm

I wonder where Arturo keeps his.

Why study 12 hours a day when I get the same results studying 1 hour a day?

@robjohn Just kidding, but I think folks should strive to be a little more responsible with voting.

@DylanMoreland i guess it's only valid for MO. maybe the MSE equivalent is 1million points.

@Jordan Hey there, how's the weather?

@robjohn Usually it is under.

@robjohn Way too hot

I have never seen robjohn trolling.

So I had to troll for two!

@robjohn :)

@Jordan Exactly. So do that and don't mention it.

@BillDubuque I tell people who seem to want to vote on something that they should do so only if they understand and like the answer. I don't want votes for votes sake.

I have just discovered that I failed some subject very badly! :ohno:

@JonasTeuwen I need to find a way to actually learn math though

@Takarakaka which one? if you don't mind saying.

art dancing keeps hating me :( @robjohn

@Jordan Honestly, 12 hours is way too much.

@Jordan I doubt it is more effective than four hours.

I know I waste a lot of time being frustrated and lost

But anyway, persistence is really important here. The payoff can take a really long time.

Yes.

@Takarakaka did you just have the final (or whatever they do in art dancing)?

Being frustrated is normal when you start learning mathematics I think.

it was some sort of showing my art dance abilities, and I literally failed! :D

The idea is that you get used to being frustrated about it and hence don't feel frustrated anymore! 8-).

I started laughing and my professor thought it was something about him or whatever

@JonasTeuwen Resilience

I just want to get a decent grade on a math test for suffering through 3 weeks of hardcore studying

but I couldn't resist not to laugh, especially seeing some of the boys in the dance clothes. :D

I was pretty certain I got a B on the test at least, then I get it back with a D. Pretty much every test is like that

@Takarakaka that doesn't sound good. I know that to teach high school, you have to have a thick skin, but college profs sometimes have much thinner skins.

@robjohn Your icon has been suspended for a day for not being mean enough - mean squares never beg.

@Jordan My univ has a special group for people that have a hard time studying. Doesn't yours have one? They provide studying strategies and stuff. It is cool.

@Jordan That will not work. If you spread those three weeks over say 10 weeks you will do way better.

@PeterTamaroff It is full of morons, I once went there

@PeterTamaroff I don't go to a university, I go to a community college. Their focus is mostly on teaching people junior high math and to speak english and write papers

\

Also, choosing a song is your option, so I decided to go for youtube.com/watch?v=AgyfzTSi6dg ! Along with my laugh and fail, it was the event of the day! :D

@Takarakaka Son of a crack, that is quite some peculiar stuff.

@robjohn Really true! These days you have to be prepared for a lot of things you won't need in your life. :(

The fact that I had too much beer actually makes it sound better, me thinks.

I mean, to see me in art dancing is like seeing dinos in zoo.

@Takarakaka So it is really cool?

@Takarakaka I would like to see dinos in a zoo...

@Takarakaka Do they dinos also get live bait? Would be A+.

it's nice that david loeffler comes here once in awhile

@JonasTeuwen throw in a lawyer once in a while just for audience enjoyment?

@robjohn Yea!

:D @JonasTeuwen It was hilarious! I mean, if only camera was there to film a show. :)

@Robjohn Oops, somehow I overwrote your earlier comment when I thought I was replying to it. So much for robust UI

just citing Jurassic Park. No need to call me on lawyer bashing. My wife is a lawyer

@robjohn @JonasTeuwen Well, dinos are gone long time ago, but with modern science everything is possible these days.

@robjohn And if there is like this day out of the mathematics faculty they can try this with a physicist. Unfortunately I'm afraid one of us would be missing next year. Sacrificed to the holy beast by some mean physicists.

@Jordan You complain that we talk down to you (which we don't) and yet you call people that have a hard time studying (which is your case) morons? Kudos!

@PeterTamaroff Huh, do I complain about that?

I cannot remember.

i think he pinged the wrong person

@PeterTamaroff No, I don't call those people morons. That is like the causality <-> correlation problem.

@BillDubuque heh, time to flag the mod :-) user abuse!

Aha.

@JonasTeuwen I'm talking to Jordan =)

So as a mod you can do some high profile trolling?

Agree! @robjohn :P

Change peoples messages without a warning...

@PeterTamaroff Nice.

@PeterTamaroff I didn't call anymore a moron, but to be completely honest there are some legitimately stupid people at my school. Although they are mostly just there to get financial aid money and leave

@N3buchadnezzar I found a really really cool proof of the fact that 4 + 1 = 5. I think it generalizes to many other cool situations.

@robjohn Well, if I'm wearing your gravatar I may as well speak for you too! But seriously, I wonder how that happened...

There are some peculiar bugs indeed.

@Jordan , where are you from?

I think they actually use some database system which can "make mistakes". They sacrifice accuracy for speed.

@BillDubuque I have no idea what sort of UI you have for these things, so I haven't a clue (as is quite usual).

@Takarakaka US.

@Takarakaka can you see my location in my profile?

Sunshine state. :P @robjohn

@Jordan cool

@Takarakaka Thanks, I was hoping that was visible.

@robjohn you have some nice statistics on math! :)

Sometimes some things are mixed up in the UI. Maybe they used stuff like Cassandra which are not ACID compliant. Facebook also often has such problems.

@BillDubuque Are you wearing my gravatar? I just refreshed my browser and I still see your same gravatar.

Ctrl + F5. Refresh cache.

Or on mac it is Cmd + R I think?

@JonasTeuwen do you see my gravatar on BD?

@robjohn I think what happened is that there was a display bug in IE, so when I thought I was clicking on reply I actually ended up clicking on edit. Remember, I was supposed to wear your gravatar way back....

@robjohn Yes, Sir.

I keep my computer health like sooo up to date.

Now I must figure out of Gauss is one of my grandparents.

Or some other cool dude.

A friend had like Brouwer, omg.

@JonasTeuwen which Gauss?

@robjohn There is only one cool Gauss right?

@JonasTeuwen indeed

@JonasTeuwen hey, my computer is healty! I have refreshed the cache a couple of times and I still see this gravatar

this gauss is much less cooler

@MarianoSuárezAlvarez Hey!

@Eugene quite a read, nonetheless.

I have statistics exam tommorow. What are best preparations for keeping my mind clear?

@Takarakaka Sleep well, definitively.

Oh blimey, Lorentz is one of my grandparents.

@Takarakaka sleep.

And try to read the essentials before you sleep.

@JonasTeuwen really?

@PeterTamaroff Well, that won't help me, 'cause only 5 hours until exam starts.

@robjohn a scientific grandfather.

Your father is already like so cool.

@JonasTeuwen Ah! okay.

@robjohn I can't sleep, don't know what's wrong with me. :(

So you also have Zygmund!

van der Waals is my cousin!

@PeterTamaroff will read them right now. ;)

@JonasTeuwen I should look up Stein's tree

@Takarakaka Maybe... just maybe, it is because you are staring at a bloody computer monitor and not trying to sleep? Don't know, usually that works better.

@robjohn Sure! genealogy.math.ndsu.nodak.edu

@Takarakaka Go and sleep!!!

@Takarakaka Just lay down at least.

@JonasTeuwen @PeterTamaroff you are right! I am about to go and sleep now.

But it is quite early here, not even 3 AM.

my grandfather is going to be manuel blum

@Eugene You're linking to that guy again.

You are like some crazy guy when you keep linking to that guy...

Sounds like some unhealthy obsession.

whoops

No problem however.

sorry i fixed it

Mariano has Lebesgue as a Great Grandfather if I'm not counting wrongly.

Which has Borel as an advisor, which has Darboux!,

And up appears Poisson.

Hell yeah! I have BERNOULLI.

@JonasTeuwen Hahaha so awesome.

All of them!

The titles become cooler and cooler, the longer you go back.

Leibniz him too!

I will use my grandfathers rule soon.

Huygens, Mersenne, Pascal. Like so cool.

@JonasTeuwen Jonas, is there any special theory about functions $\alpha$ defined as by $\alpha(n,x)$ with $n \in \Bbb N$ and $x \in \Bbb R$ such that $|\alpha(n+a,x)\pm \alpha(n+b,x) |<\epsilon$ for $n \geq N$ and certain $a,b \in \Bbb Z$?

Yea, it is like called omg, function sequences.

@JonasTeuwen I don't mean $\{ \alpha(n,x)\}$. As an example, the remainder of any analytic function has that property.

Isn't it just uniform convergence? The $a, b$ are irrelevant. You take $N = \max(N, N + a, N + b)$

@JonasTeuwen Yeah, I guess.

But note that $\pm$, not $-$ strictly.

So you got scooped by Weierstrass I think.

@JonasTeuwen LOL

Yes, but if it would be a plus, that would mean it converges to $0$.

So like take $n$ like really really big, so you get something like $2\alpha$.

@JonasTeuwen Right.

So my little eye spots scooped by Weierstrass.

@JasperLoy I don't even know them.

@JasperLoy Because they are excellent.

@JonasTeuwen Really? But what kind of anal are they?

@JasperLoy So?

@PeterTamaroff All cool.

The presentation of the Rudin books are quite good, it is quite standard but well done.

The Stein books are quite unorthodox and develop concepts quite differently. But for me they are quite insightful.

@JasperLoy I have it.

@JonasTeuwen I'm liking Steve Abbott's book a lot! (Understanding Analysis)

@PeterTamaroff This is like way different, bro.

@JonasTeuwen I asked you. You mean they are "high" anal right?

They are quite elementary (except the last one).

But very good.

@JasperLoy Are you trolling me?

@JonasTeuwen What do you mean then by "this is like way different"

@PeterTamaroff Content.

Also, using "like" like that drops your IQ by 10-20 points.

@JonasTeuwen Well, it is true Abott's book is not very extense. But it is great and opens a lot of doors.

@PeterTamaroff And open they should! Or both at the same time!

It has the Baire category Theorem, which seems to be a big deal

@JasperLoy In the name of son of a cracking monkey, why would you want that?

@JonasTeuwen Have you seen the video "Hitler learns the definition of open and closed sets"?

@JasperLoy Useless.

@JasperLoy Then go read Bourbaki. Good luck.

@PeterTamaroff Yes.

Der Untergang.

@JonasTeuwen Hahah.

@JasperLoy Precisely. As if definitions will always be the same. You only will read the papers by this author as well? Learn to read different styles.

@JasperLoy Prove it.

@JasperLoy How many books does Cohn have about algebra? If I want to study Linear Algebra, which one should I get?

So basically only introduction to analysis?

These books are not the way to go, bro.

Folland and Conway perhaps.

@JonasTeuwen What do those cover?

@JasperLoy I mean both authors.

Exactly. Folland Real Analysis. Conway like functional analysis. Good night brothers.

@JonasTeuwen Sleep well.

@JasperLoy Rudin seems to be a badass, then.

@JasperLoy Unfortunately books here are awfully expensive, so I have to find online sources and copythem from the PC or print them and study from there.

And if they aren't expensive (which most of the times they are), there are not available anywhere, or you have to import them, which is both expensive and hard here.

@JasperLoy Yeah, but I have to import them.

@JasperLoy Yeah that is true too.

@JasperLoy Do you know any Spanish?

@JasperLoy Hahah cool. Well, our Government prohibited importing books some time ago.

Then they retracted

But it was done mainly because we had no inversions so they wanted to keep dollars in town, and they said they prohibited it because "ink from imported books contained dangerous amounts of lead"

@JasperLoy It was any book, not just math books.

It was a silly economical move. It is hell to import anything now a days in Argentina.

@JasperLoy Sure it was.

You'd understand it better if you could read this elmundo.es/america/2012/03/29/argentina/1333037173.html

Maybe google translator can do some of the job.

Auto parts and medicine were prohibited too.

@JasperLoy I used to know German when I was little but now its gone.

In fact hospitals have shortages of syringes and similar stuff. It is crazy.

I'm impressed by the flawless translation google gives.

First came the spare parts for cars, then medicines and now books. Since this morning, it is forbidden to import books, unless the case of small items, approved by the Ministry of Domestic Trade.

The unusual step was taken under the guise of protecting the health of the Argentines. Health authorities-not-found which says that the ink in many of the texts that come from abroad, has a high lead content. Juan Carlos Sacco, third vice president of the Union Industrial Argentina (UIA), said sarcastically that "this is a serious measure. If you put your finger in the tongue to change the page,[you can get] poisoned."

@JasperLoy But online protests made them give up.

@JasperLoy Don't do it!

Hi

@JasperLoy Are you around? One last thing.

@RajeshD Hey.

@PeterTamaroff Hey.

@AlexBecker Hey. I don't know if you saw my question requesting some Algebra books references.

@PeterTamaroff No I haven't. Let me take a look.

Here

"...which I have found makes for unusually poor small talk at parties." LOL

@PeterTamaroff Funny, you're the second person who's commented on that in chat today.

@PeterTamaroff Did you want my opinion on linear algebra books?

@AlexBecker Yeah.

Though I'm OK if any subsequent chat arises.

@AlexBecker I was just reccomended Classic Algebra by Cohn

which I got.

@PeterTamaroff I'm afraid to say the only one I'm familiar with is "Linear Algebra and its Applications" By Strang

@AlexBecker Oh, OK.

I found it to be a good reference book, but that's all I've used it for.

My linear algebra prof taught out of his own course notes.

@AlexBecker Does he happen to have an online source?

And I've picked up much of my linear algebra here and there; it's not exactly my strong point.

@PeterTamaroff I think he does an MIT OCW class on Linear Algebra

@PeterTamaroff IIRC I've heard good things about it.

@JasperLoy Do you think Cohn's book will cover this material?

@AlexBecker Oh, OK. I've been told Algebra is crucial to modern mathematics.

Which motivated me to start studying it seriously.

@JasperLoy Do you happen to know about the book "Modern Algebra" by Birkoff and MacLane?

@JasperLoy That is good news.

@PeterTamaroff Oh definitely. I'm just more interested in commutative algebra than linear algebra,

@JasperLoy Oh, true that I asked you already!

@AlexBecker Commutative algebra studies commutative rings, groups, &c?

@PeterTamaroff Not exactly. Mostly commutative rings and modules over them. Groups don't really play role.

*a role

@AlexBecker TIP: You can edit your messages.

@PeterTamaroff Most generally, I suppose it studies commutative algebras over fields.

@PeterTamaroff I know, I just forget sometimes :)

@JasperLoy I guess I'm interested in a fairly general, yet satisfactory intro to undergrad algebra.

@JasperLoy Have you listed them?

@JasperLoy Oh, right, I thought you meant 9 books on algebra only!

@AlexBecker I guess this is getting old, but if you have a spare time, take a look at this

@JasperLoy OK, thanks. So what do you do? What are you studying now?

@JasperLoy Oh. If it is OK to ask, what kind of problems?

@JasperLoy I will write my mail here and delete it in 5 seconds. Ready?