I need to stop being lazy and do my work!

someone is telling me to enumerate 1152921504606846976 cases

in a comment to one of my questions

youre right

@caveman whoa....

Haha

I'm kidding.

ive got about 2/3s of what I need to do understood, maybe I can finish the proof today

that can be my goal

it was a joke I didnt realize.. :D

could it be done though?

Alexander's proof is pretty neat.

I wanted elementary solution ... math.stackexchange.com/a/329441/58512

"one can show" twice..

I think an elementary solution is possible using techniques

SimCity Dorkly! Haha

@amWhy, how are you

@caveman Pretty good. How about you?

I am too damn lazy!

just getting started on my math and it's already 15:30

I'm trying to get an account on another forum and they have to hand review every application so I don't know when I can join :/

@caveman We all have days like that!! ;-)

yeah, thats' true

I tend to procrastinate, even when it's things I'd like to do!

anyone know how to animate power series in maple?

Hi, @Jayesh!

@jasper I am still working on the font size. Please suggest a good one.

LOL, just kidding, wanted to bring you back here. :-P

@caveman What forum is that?

for rubiks cubes

@caveman What do they review? Do you have to submit anything? Like in your application?

yeah

I dont know if they willaccept me

its annoying waiting

@caveman Why wouldn't they? ;-) (Their loss if they don't!)

@amWhy Hi.

@JayeshBadwaik I like that you're "back" to Jayesh. Nice name!

@amWhy cool. :-)

I dont know what to do about this math.stackexchange.com/a/329493/58512

I feel bad for downvoting him but I cant retract it

oh wait I just noticed he downvoted my math.stackexchange.com/a/329439/58512

so I don't care anymore

ugh someone has upvoted him now

why...

Can some one explain to me why $(1,2) + \langle (2,2) \rangle $ has order 4?

what does that even mean

Well $\langle (2,2) \rangle$ is a cyclic group

$(1,2) + \langle (2,2) \rangle$ is a coset

what

Do not worry, I have up-voted your answer as well!

so I think Adi is doing somethig wrong but I didn't get through to him

I see the issue now.

@caveman You are very correct! But this happens a lot on this site.

sorry i forgot to mention $( Z_4 \oplus Z_{12} ) / \langle (2,2) \rangle$

what is that?

It would most probably be detected by the system.

@caveman are you talking to me

so $(1,2) + \langle (2,2) \rangle$ is an element of the group $( Z_4 \oplus Z_{12} ) / \langle (2,2) \rangle$

But when one backfires, one is making no point at all, and we shall still respect this decision, because that is not our business I guess.

@caveman yes, with order 4 apparently, but i dont see why

$2 \cdot \left[ (1,2) + \langle (2,2) \rangle \right ] = (2,4) + \langle (2,2) \rangle$

Yes

$3 \cdot \left[ (1,2) + \langle (2,2) \rangle \right ] = (3,6) + \langle (2,2) \rangle$

$4 \cdot \left[ (1,2) + \langle (2,2) \rangle \right ] = (4,8) + \langle (2,2) \rangle$

Yes, i know that

but how is $(4,8) \in \langle (2,2) \rangle$ ?

and $(2,4) \notin \langle (2,2) \rangle$

We downvote and subtract our reps, because we tried to let others notice that this answer might not be good enough. But, when one backfires, there is no point at all: the answer he downvotes might not be bad, and so I think that it is not a fair judgement. But, whatever, it is just how the community works: let users decide their own positions.

it's almost important that $(2,4) \not \in \langle (2,2)\rangle$ and $(3,6) \not \in \langle (2,2)\rangle$

@awllower, that is wise

That was how I dealt with that. :D

@caveman I though that $\langle (2,2) \rangle = \{(2,2), (4,4), (6,6), \ldots \}$

@Eric, me too

let'stake it further

$$\langle (2,2) \rangle = \{(2,2), (0,4), (2,6), (0,8), (2, 10), (0, 0) \}$$

So how is it possible that $(4,8)$ is in there?

because $(4,8) = (0,8)$

wait, so $\langle (2,2) \rangle$ is "from" $Z_4 \oplus Z_{12}$?

how am i supposed to know that?

@Eric, for $G/N$ to be well defined $N$ must be a (normal) subgroup of $G$.

in that case, certainly $(4,8) = (0,8) \in \langle (2,2) \rangle$

@caveman ahhhhhhhh yes

thats it then, My first definition of $\langle (2,2) \rangle$ is not normal, or even a subgroup

or wait is this rings?

I was thinking groups

no its groups

in the case of rings it would be an ideal, so you don't need to worry about normal

@JasperLoy Thanks. =)

@caveman Thank you so much man

but $\langle (2,2) \rangle$ is a subgroup - and $G$ is abelian so it is a normal subgroup

yep

I am glad 5pm left, he is one of the people that closed my question on meta even though he isnt a moderator

huhu

I find it weird that robjohn is asking people "How do you get from the generating function to the closed form?"

what is the reason forasking that

how difficult is the definition of a lie group and its relationship to its' Lie Algebra ?

not difficult at all

it's just a group object in the category of differentiable maps

i shall construct the lie algebra as a functor of the lie group but I need to learn first what those things are :D

functor makes a lot of sense once you have category defined

you'll probably have seen lots of functors without knowing the name of them

i mean i don't know what a lie group is ^^

you should know some very basic group theory

i think google and some hours will do it fine

by the way what is $Z$ like in the first homology group of $S^1$ ?

its a bold Z if that helps

$H_1(S^1 ) =Z$

the integers

it just means you can go around a circle ..., -3, -2, -1, 0, 1, 2, 3, ... times

ah ok thanks

the assistan of my theoretical physics prof is so freaking annoying

tell him physics is just a theory

the solutions for the exam we have written were so wrong

on a scale from 1 to 10 were 1 is some typos to 10 totally bullshit it was a 10

and he said those were TeX errors

wow

that's really lame

give him TeX for dummies

and the matrices don't commute?

nope (in the standard exercises they do)

it was langrangian for a oszillator

and $M$ is a diagonal matrix in which the mass of the particles stand

"normally" all have the same weight, than it obviously commutes but in the exam there weren't

that just sounds like a slip up not too bad

and he wrote the entries of the matrix just like $M^{-1} K$, how stupid does he think i am to accept it is a TeX error ?

yeah that's weak

@caveman Have you read the paper?

not yet @GustavoBandeira,

I am going to this wekend

@caveman yay!

Happy half tau day in advance, hungry mathematicians!

Dude... I'm tired of this pop-up. =/

I always forget to turn the pop-up control again. =/

@GustavoBandeira,

@caveman My grandpa lived in Anonymous Proxy. But he's long gone. =/

@caveman LOL

ah crap i answered a question and right before i could submit the question was deleted

@DominicMichaelis This is what you get for answering questions, Virginia.

no one in the physics room talks to me

@caveman Hows the weather in Anonymous Proxy?

It seems like the girls there are great

:)

@GustavoBandeira last time i had a pop up problem, a meteor destroyed those f****** dinosaurs

@caveman but you get dizzy

i am tired of commenting "what have you tried" as i know if they had tried anything, they wouldn't ask that question

I have a proposal, template comments! Whenever a user clicks on add comment, there should be a list of most popular comments from which the user can choose one!

im so lost trying to understand this proof.. it'sright at the end it just concludes this formula with no justifiation and I don't see how

@DominicMichaelis it is sometimes possible they consider worthless what they have tried (though it's not worthless)

hi @Theta30,

I got all the groups of order 8 but it's not very nice

@caveman great

I don't see how to make it work for p^3 either

@JasperLoy Are you familiar with Mir Display Server?

Also is Jasper a common name?

Why doesn't this command work in LaTeX ?

For a given square matrix $A= (a_{ij})_{ij} \in \big{M}_{n} (K)$

@JasperLoy I was wondering if you are a floss developer in disguise. ;-)

Anyone ?

$$A= (a_{ij})_{ij} \in \Huge{M}_{n} (K)$$

Thank you!

@caveman

@JasperLoy Yeah, you could be Anon! :P I am pretty sure you aren't.

$$A= (a_{ij})_{ij} \in \Large{M}_{n} (K)$$

docs.mathjax.org/en/v1.1-latest/tex.html

@JasperLoy Right, so I am pretty sure you are not user 11763 on mse.

@JasperLoy https://i.sstatic.net/khIqt.jpg

@anon Hahahaha.

@JasperLoy You lived with? and you say you never had a girlfriend.

@JasperLoy Ahaa. I see. I am more accustomed to "was room mates with".

How do you make a space between two lines in LaTeX

what do you mean

I want it to be

I don't know

$$\begin{array}{c}dddddddd \\ \frac{}{} \\ \frac{}{} \\ \frac{}{} \\ ddddddd\end{array}$$

it can somehow tell if the thing is invisible.. then it doesn't make extra space

I totally just made a 60% or worse on a Differential Equations exam

T.T

@Gnintendo or worse?

depends how he grades it

actually, it could be better

I knew all the material, but I didn't have enough time to finish the exam :<

okay, I thought you got the score.

no, I just took it

I knew how to do all of the material, but he crammed an insane amount of stuff into the time we had

I have known a lot of such people in my time. :-)

k, doing some calculations

if I made a 50% on the test and failed it

and I made a 90% on the next test

then I need to make a...95.5 on the final to get an A

hmm, that's not bad.

@JasperLoy closing questions should upset people, but how they take out that upset is the point to note.

@Gnintendo considering you have made 60% on this test, you are confident you can make 90-95% percent on next?

I made a 100 on the first exam

@Gnintendo Good then!

@JasperLoy I see. screenshot?

this exam was styled the same, he just put 4 times as many questions no it, I can pay more attention to time and just work problems like mad

if I made a 50% on this test, I need to make a 94% average between the next exam and the final to keep an A in the class

hmmm

It could be worse (especially since I don't know how he's going to grade this exam)

If he curves the exam then I'm golden, a good portion of the class didn't even know how to do the problems that we had time to do

>.<

not panicking [yet]

:-)

Hey-Ho!

Can someone tell me why this is wrong ?

I get the following error

misplaced alignement tab &

it is rendered well!

Where is @Peter

They picked an Argentinian pope!

@caveman

anyone ?

hi

@Arkamis Who picked an Argentinian pope?

@caveman Do you you see anything wrong with the above code ?

The pope picking people.

no its fine

@Arkamis god?

@Carpediem It is rendered well here, so I am not sure what can be wrong.

@Arkamis Oh you are talking about the Vatican thing. I see.

the soft big list question is closed again

and 3 votes more till it is reopened ...

@DominicMichaelis Good, I think, it is now 7 days? I guess 7 days are enough for the question.

that batman equation question has really a lot of views

@JayeshBadwaik that's smart since catholics bulk swifts to developing countries such as in latin america

@Theta30 Yeah, I thought so too. I guess even America has a lot of catholics.

@caveman This worked

im really damn boredwaiting for admins to approve my account

$\delta_{xy}= \begin{cases} 1 \mbox{if } x=y \\ 0 \mbox{if } x\neq y \end{cases}$

But the accolade is not surrounding the two lines

@caveman which site are you on for cubes?

none yet.. trying to get into one

@caveman can you tell why ?

no

It comes out like that

kronecker delta ?

Yes

I don't understand why it comes out like that

why it comes out ?

@DominicMichaelis ?

Can anyone see why it appears like that:

$\delta_{xy}= \begin{cases} 1 \mbox{if } x=y \\ 0 \mbox{if } x\neq y \end{cases}$

@Carpediem, I think the irst one was better

here you have no alignment tabs

@DominicMichaelis we are talking about tex rather than math.

I have

btw use a real math environmaent

E_{ij}=(\delta_{ki}\delta_{lj})

I would like to add next to the deltas the conditions 1\leq k \leq n and 1 \leq l \leq p

one under the other

@Carpediem What dominic says is very correct. Use a real math env like align or equation

that is probably causing problems.

@JayeshBadwaik What does that mean ?

you use a inline math environment

that is a very bad style for a cases environment in general

?

$ $ is for inline and hence may cause display problems for multiline display style equations.

$$\int f(x) \, \mathrm{d} x$$

vs $\int f(x) \, \mathrm{d}x$

It tell me environment align undefined

use [ ]

a f********

instead of {}

?

nope i mean \[

\]

:\

or a double $

Oh! ok

but in a real document double $ is a tabu

so don't use it (it's just ok here in math jax)

@Carpediem align needs package amsmath

\usepackage{amsmath}

every document which is not a picture needs amsmath

and amstool should be in there too

it tells me can be used only in preambule

ah ok

I see

but for sure microtype thats one of the most important packages

imo

Now I know what I made the teddy feel like : (.

I am currently in graphicx mode

the real numbers are a compact space (in the indiscrete topology)

This guy should sit down with a pencil and a piece of paper and try to understand the theorem and then the proof. But I'm so annoyed that he doesn't just do it that I can't bring myself to tell him.

@MattN. Everyone has his moments like that! He (teddy) probably just considered it in good spirit and took it well. (I know many of my teachers did.) :-)

@JayeshBadwaik Maybe. Or maybe he's more suitable for teaching (temperament-wise).

ok the joke with the indiscrete topology is an old one

Ah, now I feel better.

I really wanted to go on a rampage after reading those comments.

:-)

: )

just do what prof does in those moments, concipate an exam :D

Thanks. Now I'm all cooled down.

This is the place to rampage...

@DominicMichaelis : D

concipate = invent exam questions, I assume?

@DominicMichaelis concipate? are you trying to say conceptualize?

i meant that

in german it is konzipieren

and you thought you can just change the k to c and z to c and you're golden heh? :P :P

@JayeshBadwaik It actually works most of the time : )

@MattN. Haha. :D :D

seems like there is no natural transformation for this one ^^

80 pages to yoneda

What's that? Something like Weibel?

oh only 34 pages :D

Poor guy. I will respond to all further comments and suppress any angry feelings.

as far as i know its something like god mode for mathematics

It's not as bad as when I ask questions on SE and get an answer that is some lengthy blah-blah, related to my question but not answering it and completely beside the point. That makes me suicidal.

I wrote now

$\delta_{xy}= \begin{array}{c} 1 \mbox{if } x=y \\ 0 \mbox{if } x\neq y \end{array}$

@DominicMichaelis I know it's not Atiyah-Macdonald since Yoneda lemma is not in there, iirc...

But the singleton is gone

@MattN., i had a similar thing

...

.....

@caveman It sucks doesn't it. You can't downvote for the moral reason that the poster is supposedly trying to be helpful. But on closer inspection of the situation it seems to be that people only read the first line of your post and then start writing an answer because otherwise someone else might be quicker and after all what they want is reputation.

And if someone else posts the answer you want to post before you you can't really post it anymore.

Anyone know how to make the singleton appear ?

@Carpediem What do you mean?

@MattN. I want it to look like that

use \begin{cases} \end{cases}

Like the singleton around

Got to go. I'll see you all later!

bye