more groups?

@nimza ça va bien et toi ?

i wonder why this has no downvote yet

I gave it a close vote

same here

because i can unterstand that someone ask such a question although it is freaking annoying

ok now it got 3 downvotes

hey @DominicMichaelis

how are your cats

still on the exercises

didn't spend a lot of time today on the cats

I own that book

haven't actually done the excerces though

if you want to discuss any with me please do because I havea cats exam soon!

I have three cats. They are not good at any exams.

All of their answers involve knocking things off shelves, or sticking their butts in your face.

@Arkamis you obviously don't experience the joy of your cats.

we take about real cats (categories) they aren't fluffy but still great

wow this is completely unreadable math.stackexchange.com/questions/330594/…

words ? for what?

@JayeshBadwaik I love my cats. I wouldn't have them if they weren't such a pain, but also so loving

@DominicMichaelis, exercises at the end of chapter 1?

jupp

i am a bit slow cause i lack some of the elementary stuff inside

I don't know how you can be bothered to solve these..

We don't eat every animal for food. Keeping animals as pets is a natural evolution of humans settling into an agricultural society

well i spend about 20 minutes on them till now

Cats were good at controlling vermin, and required little maintenance from humans

Dogs have personality.

so do fish

fishes aren't fluffy

what's wrong with eating your pet anyway

Fish don't give you love. They just kind of look at you and go "bloop".

thats exactly right

@JasperLoy BANANA!

@JasperLoy MAN!!!

I missed you

as i said they aren'T fluffy

@JasperLoy me?

Fishes have no feelings...

cats and dogs can communicate with you. Fish, not so much.

@caveman and i prove everything i didn't know till know such like the commutator subgroup is really a subgroup and a normal one

@DominicMichaelis, I do that too

@JasperLoy hmm why you say it?

I am just a bolt.

Geez what is that???

κρανίοπεριπολία O.o I'll have nightmares

I really wanna do some math

no idea what

@JasperLoy really?

anthing except my school work....... lol

school work ?

@Arkamis I was referring to the book "Joy of Cats". :-)

@JayeshBadwaik HAHAHAHAHAHAHAH

@JayeshBadwaik I was unaware such a book existed.

yeah it's too hard so I'm going to come back to it

"JOY OF SETS"

Joy of cats

Great

@Arkamis Here kiddo, buy an ice-cream

@JasperLoy no one "don't tell lies"

@JasperLoy Oh, you are

the humanest of them all

@JasperLoy You think cathexis is bad?

@JasperLoy I have read other books about it. :-)

50 Interesting Facts About $\pi$

@JasperLoy keep thinking, one day you find it out

@JasperLoy We have something

@JasperLoy it's good, I feel it

"Can you feel it, can you feel it, can you feel it!"

Hey !

indian boy

@κρανίοπεριπολία hey guy, you have a name.... very nameous

@JasperLoy I just bought a widescreen monitor.

@JasperLoy $\Delta\text{refresh rate} \times \Delta \text{width} > \frac{h}{4 \pi}$

(Working out the dimensions to make it legit.)

@JasperLoy I see. Finally one says QED, but with or without taking action? QED without action is easy, QED with taking action is difficult since it violates your QED.

@JasperLoy aah

Good evening gentlemen.

hi

@JasperLoy I am saying deep things bro, real deep.

@MattN. Good evening.

@JasperLoy touches left shoulder with back of left hand

@JasperLoy Try it.

@JayeshBadwaik You can't get deeper than Planck's constant ;)

Never mind. It's a gesture that signifies "gay dude" around where I am at the moment.

@MattN. hi

Hello there.

What a terrible day.

I attended a presentation today but it was much less interesting than I expected.

oh

@MattN. That's common.

@JasperLoy No. Many guesses about why but I don't really know.

I didn't know you gave one!

@MattN. If that makes it a terrible day, then most of them will be 8-(.

But this one cost me basically my entire day.

Which is actually quite so.

But still!

@JasperLoy About what?

@MattN. How did it cost you the whole day?

Just start grabbing an cross word puzzle.

When it is boring.

@JonasTeuwen Or grab some precious sleep. ;-) (Disclosure: I have never been able to fall asleep in any kind of talk/classroom even when dead tired.)

@JonasTeuwen Mornings are unproductive and I had to sort out some chores such as going to the post office. Then travel to place of presentation one hour. Then hand over a key to a friend. Talk a bit. Travel one hour home. Cook. Eat. Etc etc

@JasperLoy Is hard in talks.

@MattN. Oh. Yes, those are sucky days. So that requires beer.

@JasperLoy Back to JB?

I thought you gave up on him!

@JonasTeuwen No. When I sit there I after some time enter the state where I feel a growing urge of needing to get out of there asap and run from it as fast and far as I can. Crossword puzzle is even more of a waste of time since if I just sit there I can still think about my own proofs.

@JasperLoy Oh I would have liked that.

@JasperLoy What I don't understand is though: I thought you weren't doing anything at the moment!

@JayeshBadwaik I have. In the first row. I was fast asleep. Still fast asleep when the break started and the lecturer apparently walked over to me, bent over and made funny comments about me. : )

Lectures are absolute torture to me.

CB morrey's theorem says that if $u \in H_p^1(\Omega)$ with $p >n$ where $n$ is the dimension of the domain . then $u\in C^{0+\alpha}( \Omega)$ . I don't understand here , because the functions in $H^j_p$ are already $j-$ differentiable .

@JonasTeuwen Not sure. I think my mood is too bad for beer.

Also too bad for chat. But sitting there staring at the wall was also not optimal.

@MattN. : you should do some meditation :D

@caveman at the moment I try to see why the commutator subgroup is really a subgroup, I am hanging a bit with proving it is closed

@MattN. I see. Even when they are a torture to me, I cannot fall asleep. I generally take out my phone and start reading some book I have been meaning to read for a long time.

@JasperLoy i hope to get some help from @JonasTeuwen

@Theorem Dude, my girlfriend keeps telling me that. Someone else told me to do "anger management" training. Whatever that means.

@DominicMichaelis, are you using the right defintion? The commmutator subgroup [G,G] is the group generated by all elements of the form [a,b], for a,bin G

@DominicMichaelis, so closure is immediate from the def.

@DominicMichaelis the set of commutators is not closed under multiplication. the subgroup they generate (the commutator subgroup) is a subgroup

Hi. Soft Question: What does it mean to say that a 7-manifold M is fibered over the 4-sphere with 3-sphere fibers?

How is that soft?

@JasperLoy : where is the Tao ?

@κρανίοπεριπολία are you greek?

Hey @Haytham

@Haytham That would make him a Greek spam bot.

Interesting.

@Argon Hi gas

@Haytham Hey, Hay

@JasperLoy : yeah :)

@Haytham No.

so for two elements for $a,b \in[G,G]$ I calculate that $ a b a^{-1} b^{-1}\in [G,G]$? That is trivial

But you are right. At some point I'll take meditation classes.

I'm just looking for the meaning of fibered in this context.

@JasperLoy But I think they all more or less have the same effect: improve your memory and focus.

@MattN., you don't need classes you can just do it yourself

@DominicMichaelis, yes its trivial $[a,b] \in [G,G]$ by definition, you don't have to do anything.

@Jasper Why

@caveman I have to learn how to do it somewhere and somehow.

Also... it doesn't appeal : /

oh i was starring at $a b a^{-1} b^{-1} c d c^{-1} d^{-1}$ and searched a way to write it as $x y x^{-1} y^{-1}$ :D

@MattN., you just sit and let go of your thoughts

@MattN., yes you already said you didnt like sitting staring at the wall, that's pretty much it

@caveman It's not clear to me what it means. Does it mean you try very hard to think nothing? : )

@caveman I thought it greatly mattered what you do with your thoughts during that staring at the wall.

It's like a bucket of water, you have to just hold it still to let the ripples fade - then you can see the reflection of the moon in it

@JasperLoy that's not how you do things...

@JasperLoy Why can't you do it at home?

@caveman I like your description. But it still doesn't tell me what exactly I'm supposed to do (apart from staring at the wall)

@JasperLoy I think I did that for six months straight once. :-)

@JayeshBadwaik You know Don Quijote posted another comment today. I managed to not get angry. Without anger management class : )

Jesus stayed 40 days at the desert, take that @jayesh

@OldJohn Long time no see! I thought you'd left the site.

@MattN. Narh - just been a bit busy with non-maths stuff recently

@MattN. Good! :-)

@Haytham But also Jesus born 2000 years later would have been given medication or locked up in a nut house.

@MattN., for beginners you can sit with your spine completely vertical and slowly count down from 10 without thinking about other things. It will not be possible for you to do this first few tries, that's fine - you are doing it rigt then , but keep trying and you will be able to count down slowly without thinking other thoughts

- and was away for 2 weeks holiday

just watch your breathing while you do it to take your mind off

@JasperLoy If you have not heard about Don Quixote, then you are quixotic my friend.

@MattN. or appear in a tv show

@MattN. Ah, so you need strong stuff. Hemlock.

@caveman So basically meditation is trying to think nothing?

@MattN. Exactly!! (Atleast initially.)

(a la Hemingway)

Hi @jonas How are things?

@MattN. Argh, skip the bs, just get a drink.

@MattN. meditation is trying to get deep into things, is to think more

I don't think so

@OldJohn Mmm.

good mmm - or bad mmm?

@JasperLoy Him.

just sitting.

@Haytham For example : D

I did get invited to represent my university in the national meeting.

Which is kind of cool as the others are professors.

@JonasTeuwen Atta my boy.

@JasperLoy Why not? You should give it a try. Can be quite a relief.

@JonasTeuwen good

@caveman Ok, thank you. I will try that (just at home, without classes). If it's just to think nothing I think I can do that. Perhaps even without counting : )

@MattN., you do't have to reply to comments

Oh, ok, sorry.

@MattN., solely by the length of the discussion I am guessing that was not productive