The h Bar

Qmechanic

6:04 PM

@EmilioPisanty : Well, It received 4 answers in no time, and it had the potential to become HNQ. In fact it is HNQ now.

Sid

I personally don't like HNQ to be honest

AccidentalFourierTransform

nobody does

Sid

It is hardly indicative of what the site is all about

0celo7

@JohnRennie Are you familiar with mechanized plate polishing?

Abcd

6:20 PM

A particle is moves in a straight line with constant acceleration. The average velocity of the particle cannot be zero in any time interval. Can someone explain why this is false?

0celo7

shoot a cannon ball straight up and have it hit the ground at the same height

Abcd

@0celo7 When is the average velocity zero? At the final instant?

0celo7

@Abcd average over the whole thing is zero

the velocity going down is the same as going up, just negative

Abcd

@0celo7 But at that moment acceleration has also changed (= become negative)

DanielSank

Hi, everybody.

Abcd

6:23 PM

@0celo7 yeah "negative" creates the problem. doesn't it?

0celo7

@Abcd ...

I think you need to revisit falling things

Sid

Well... conceptually @Abcd you need to revisit things

ACuriousMind

@Abcd The is only one acceleration acting on the falling object, and it's constant: Gravity.

0celo7

@ACuriousMind Is Gravity a proper noun?

Abcd

@ACuriousMind yes, right. Corrected myself. thanks @0celo7

ACuriousMind

6:26 PM

@0celo7 No (but I thought things after a double colon get capitalized, since there's usually a complete main clause following).

0celo7

@ACuriousMind Only if you have a complete sentence.

I am expecting Dr. English Major Sank to correct me.

Abcd

For example, $s = 6 + 12t -2t^2$

0celo7

@ACuriousMind I advocate we go to the German Way of capitalizing Things.

Abcd

Aren't such equations( describing acceleration as a function of time), dimensionally incorrect?

0celo7

@Abcd what?

Sid

6:28 PM

Um... what?

Abcd

Look, we have different units on both sides of the equation @Sid and @0celo7

ACuriousMind

@Abcd They are, but that's just because you didn't write down the dimensions of the prefactors - if $t$ has units of time, then "12" and "2" are not numbers, but should have units of velocity and acceleration.

0celo7

Make up some units.

Stop being a pedant

$6$ should be in feet

Abcd

@0celo7 I ain't being a pedant -_-

0celo7

$12$ in feet/sec

$2$ in feet/sec^2

assuming $t$ is in seconds

Abcd

6:30 PM

@0celo7 Thanks. That thing was troubling me especially because the first chapter in grade 11 was dimensional analysis

Sid

There is that common misconception that constants don't have any units

Abcd

@ACuriousMind Yes :)

ACuriousMind

@0celo7 I strongly oppose the idea that anything "should be in feet" :P

0celo7

@ACuriousMind We beat the Nazis with feet

So be quiet

Sid

@0celo7 with guns and tanks to be fair

Slereah

6:32 PM

I am rereading the paper by crazy man Wolfgang

0celo7

@Sid I am convinced certain misconceptions are planted by teachers to encourage students to be pedantic.

Slereah

About timelike homotopies

So far so good

0celo7

It is obvious that the 12 should be in feet, but no one wants to write that

Slereah

I think I've seen a mention that stings do count for corners

0celo7

So teachers plant the seed of doubt, forcing beginners to write feet

Sid

6:33 PM

I think teachers omit a lot of things that should be taught to students just to avoid facing questions..

And that is why students like @Abcd tend to have this conceptual doubts.

Slereah

But wait

I still don't understand

If we want the product of two $q$-loops, wouldn't it have at least $2q$ corners

0celo7

Installing Miktex again

Getting a computer running is a damn pain

Abcd

@Sid maybe...

0celo7

@Sid This is probably the first time an Indian has used doubt correctly.

Slereah

I guess we could remove those corners with stings, but then does that mean that any $q$ loop is also a $p$-loop for $p < q$

0celo7

6:35 PM

Barely

Or maybe I'm around you Indians so much I say it ironically

Not sure

Sid

@0celo7 I don't understand what you are saying.

0celo7

@Sid shrug

AccidentalFourierTransform

every time someone says "I have a doubt" 0celo7 loses his shit

Sid

why exactly?

0celo7

@Sid o.O

How can you not???

Sid

6:38 PM

Oh, wait, A doubt?

AccidentalFourierTransform

because that incorrect structure is also used in Spanish, so it doesn't sound that weird to me :-P

Sid

@0celo7 Guess what, I am different from your usual breed for Indians. :P

0celo7

What does that mean? You're Pakistani?

Sid

... No

I am not crazy for J..(redacted)

0celo7

No reasonable person is

@Slereah halp

texstudio can't find my miktex

Sid

6:43 PM

@0celo7 Lots of people are..

0celo7

not reasonable ones

Sid

@0celo7 Are you actually saying that close to 300,000 people are unreasonable?

0celo7

hahahaha

if that seems strange to you, well

sorry

ACuriousMind

Friendly reminder it might be a good idea to steer clear of a topic if all you'll do is denounce the people who are interested in or supportive of it.

0celo7

millions and millions of people voted for Hillary Clinton

way more than 300,000 people are unreasonable in this world

ACuriousMind

6:47 PM

... especially if that topic is politics.

Sid

And many millions voted for Trump as well..

0celo7

@ACuriousMind Ugh, TeX is refusing to recognize packages

What do I do?

Sid

but, that is a different debate

0celo7

It did this last time, not sure why it's doing this

ACuriousMind

You fix it.

0celo7

6:47 PM

How?

ACuriousMind

Googling + TeX - LaTeX :P

2

0celo7

that's pretty unhelpful

ACuriousMind

I'm afraid that's the most help I can offer

Danu

o/

Just win baby

\o

Slereah

6:52 PM

young Sheldon Official Trailer

►

BAZINGA

It seems p. boring

Sid

(I was actually surprised Trump won by so big a margin. I thought it would be a lot closer)

Danu

Let's not get into polytics :P

0celo7

@ACuriousMind I'm getting dozens of errors

not sure how to search all of them

Slereah

Sequentially

0celo7

I think I have to just keep running it

it downloads the package next time I compile

then it hits errors on dependencies

and downloads them as I compile

Just win baby

6:57 PM

In other news North Korea is back at it :P

Sid

No big surprise

They are going to hawk and then forget.

That's how world politics works..

(And that is also why it is so interesting. It is almost about who blinks first)

Just win baby

The Wild Wild West

Slereah

Fugg

I don't understand $q$-loops at all

Sid

I am just hoping Trump doesn't mess up badly..

Slereah

If you can lower their number of corners by the addition of a sting, then any $q$-loop can be made into a $0$-loop

ACuriousMind

7:00 PM

@Slereah I prefer fruit loops

Slereah

And then all timelike homotopy groups are equivalent to the usual homotopy group

Just win baby

He's not gonna back down, that's for sure.

0celo7

@Justwinbaby Why would he?

He has a Mandate from the People

AccidentalFourierTransform

froot loops

Sid

He lost the popular vote..

Just win baby

7:01 PM

For the people by the people.

Sid

But, still yeah, he has a mandate..

0celo7

@Sid Daily reminder that over 3 million illegals voted

Sid

Illegals? They are not illegal if they can vote

0celo7

Wot

Sid

Isn't that how it works? You show a card and only then you can vote?

0celo7

7:02 PM

No

There is no card in certain states

Sid

How does voting work?

0celo7

rockthevote.com/get-informed/elections/voter-id-requirements/…

Anonymous

@Justwinbaby The situation is so delicate that if he attacks NK in return then it could be the beginning of a full-fledged war. He needs to think of some other option.

Sid

Exactly. The situation is delicate every time. Except, this time, people are genuinely afraid

@0celo7 That says that you need a card..

0celo7

@Sid not a voter card

Just win baby

7:04 PM

It's the Cuban missile crisis all over again @Blue

Emilio Pisanty

@Qmechanic yeah, I was just curious, I thought it was borderline but I wasn't sure

0celo7

and it varies by state

@Justwinbaby lol?

No one is that afraid.

Sid

Also, I have heard about this but there was a vote against Clinton rather than vote for Trump..

Anonymous

I don't think the US can afford another power vacuum like Syria or Iraq.

Anonymous

They have done foolish things already

Slereah

7:06 PM

Hm, found a book that mentions Smith's paper

Let's investigate

Sid

It can't. Plus,there are also potentially volatile issues..

Just win baby

Fear nuclear war @0celo7

Sid

And as usual, the US might feel the need to poke its nose anytime onto that..

Anonymous

I would say that just declare NK as a terrorist state and isolate it completely.

0celo7

@Justwinbaby Nah.

We have missile defense systems.

Anonymous

7:08 PM

And help the citizens escape somehow

Sid

That would be even more dangerous I think. Kim is a crazy bat. He would simply fire nuclear weapons everywhere

Anonymous

@Sid Yup. So work on building the defense rather than offense.

Anonymous

US does have enough technology to intercept missiles. They just need to implement it properly.

Just win baby

His people are starving.

Slereah

@0celo7 Knows who else mentions Smith's paper?

0celo7

7:10 PM

BEE?

Slereah

yep

0celo7

vOv

I can't get into my office 365 account

Anonymous

@Justwinbaby Yes. So directly attacking NK is definitely not the correct way to go.

0celo7

ok it works on the fifth time on a second computer

Sid

@Blue Also, there are many reasons why you can't declare any state a terrorist state for that matter. There are some complications and leads to things you wouldn't want .

Slereah

7:12 PM

Smith's reference in BEE is p. 351

he also mentions some other guys

Avez and Flaherty

Anonymous

@Sid I don't see any better alternative tbh

Slereah

Hopefully those guys will be easier to understand

Sid

NK wouldn't do anything. It would test-fire some missiles, fail, repeat. And when somehow one gets successful, gloat about it..

0celo7

@Slereah Avez is famous

Slereah

is he

And the Avez paper mentions the Smith paper!

i'm hyped

Just win baby

7:15 PM

NK + ISIS = WWIII

Anonymous

@Sid That's not the problem really. There are millions within who are still living in a dictatorship (comparable to Nazi Germany) in a 19th century setup.

Sid

Do you think those people care?

Anonymous

Well, I don't know if other countries actually care about them...

Slereah

From what I can see, most people don't bother with $q$ loops and only consider $0$-loops

Probably because nobody understood what Smith was on about

Sid

@Justwinbaby ISIS is almost finished by now. Along with whatever remains of Syria..

Just win baby

7:18 PM

They're still not gonna go down without a fight.

What about the oil?

0celo7

There's lots of oil in Alaska and Canada, and we are working on alternatives.

Just win baby

Nuclear contaminated oil doesn't run cars pal.

Anonymous

@0celo7 Huh. There are a billion innocent people in the ME as well. Nuking is never the option.

Sid

Nuclear War is no joke. The mutations can kill people for generations. It's not like some X-Men Shit.

0celo7

1. Neutron bombs don't cause irradiation like that. 2. I just said there are alternatives.

@Blue "Innocent"

Sid

7:21 PM

@0celo7 Are you actually saying that everyone in the Middle East is part of the ISIS?

Just win baby

Let's drop this topic please.

Slereah

Okay apparently nobody actually talks about Smith's theory

They only say "That guy also worked on the topic"

0celo7

@Sid No

Slereah

But with a completely different framework

Anonymous

@0celo7 Yes.

0celo7

7:22 PM

The Christians certainly aren't

About the rest -- it's impossible to tell any more.

Sid

Yeah, let's drop this topic now..

Just win baby

^

please?

:-)

Anonymous

That's a very short sighted view of the situation, Ocelo7. And, I'm no longer gonna talk about this topic.

0celo7

Actually, it's the only long-term solution.

Sid

Yeah, me too. I don't want to get banned from SE chat..

Just win baby

7:24 PM

We all have our own opinions.

Balarka Sen

a neat discussion to be having on a saturday

0celo7

it's Friday

Balarka Sen

for you

Sid

@0celo7 What's the time there?

Half-past 12?

0celo7

3:26

Sid

7:27 PM

Huh.. I thought US was like 12 hours behind India. Apparently not

0celo7

We have four time zones.

Anonymous

US has several time zones

0celo7

Or three?

Who knows

Four

Just win baby

Include Alaska.

0celo7

@Sid I don't like Sarah Palin or glaciers.

Sid

7:28 PM

@0celo7 Which time-zone are you in?

0celo7

@Sid The one in which it is 3:26

3:29

Sid

3:29 now.. :P

*ninjaed

@0celo7 Let's nuke Antarctica too..

:P

Slereah

I'm trying to prove that an inextendible curve has no endpoints

But

is it true

I'm not 100% for a general curve

Sid

Oh, you are EDT..

Slereah

Well, it's probably true, but

Tough to prove in the general case

I want to extend the curve slightly in some neighbourhood of the endpoint, but I need to prove that there isn't a curve already there

ie forbid spacefilling curves

Abcd

7:32 PM

@Sid If a motorboat goes down a river, with velocity $v_b + v_r$ (relative velocity of motorboat wrt river) then wouldn't it come back with velocity $v_b - v_r$ (relative velocity of motorboat wrt river while moving upstream.)?

Sid

If it is moving parallel to direction of river, Yeah.

Just win baby

What are the sizes of the v's!

Sid

@0celo7 Does the US follow Daylight Savings or not?

Just win baby

Yes

Abcd

@Justwinbaby sizes?

Sid

7:35 PM

Yeah, Agree with JustWin. There, you need the values of velocity

Just win baby

What do you think if the river flows faster than the boat can move up stream?

V_net

Just like profits and losses, right?

Abcd

@Justwinbaby it will move downwards

Sid

@Justwinbaby I think we should assume velocity of boat>velocity of river.

Just win baby

"assume"?

Sid

Well, boatman should know at least that much..

Just win baby

7:41 PM

Does the question state that?

Sid

Let's just say that the boatman has enough skills

Just win baby

Problem solving is a skill also :-)

Sid

I am watching this incredible Tennis match. Dunno who this guy is, but he is running Murray ragged in this set..

I need to go now. Have a nice day, all.

Just win baby

Cya pal

dmckee

@JohnRennie Used it a few times in the last years before the web, but frankly used ftp more.

Just win baby

8:05 PM

Hi @dmckee o/

dmckee

Hi.

Just win baby

How are things?

dmckee

Hard for things to be going much better: I'm a father as of today.

23

Just win baby

Congrats!

:-D

dmckee

Thanks.

3740 grams. Mother and child doing fine.

Just win baby

8:11 PM

Cool.

dmckee

(That's 7lbs 10oz for people my backwards part of the world.)

AccidentalFourierTransform

I want kids too :-(

Just win baby

Have you given out cigars yet?

Anonymous

@AccidentalFourierTransform Human kids?

Anonymous

@dmckee Congratulations :-)

AccidentalFourierTransform

8:13 PM

preferably, yes

dmckee

@Justwinbaby No, but Ive texted photos to about thrity people.

Anonymous

I was going to suggest: get some monkeys :P

Anonymous

@AccidentalFourierTransform Start using Tinder XD

Just win baby

Texted photos are "virtual" cigars :-)

ACuriousMind

@dmckee Congratulations! Now back to moderating the site! ::cracks whip::

Just win baby

8:20 PM

No cigar for you young whipper snappers :P

For generations it has been a tradition for fathers to pass out cigars to announce the birth of a new born baby. It is unclear exactly where or when the tradition began, but it is believed that it originated with American Indians, who would exchange a primitive cigar to celebrate the birth of a child.

Balarka Sen

There's the cigar. I mean, pipe. I mean, not-pipe.

Congrats, @dmckee

Just win baby

^that is not a cigar

The Dark Side

@dmckee Congratulations.

:: Virtual firecrackers ::

Anonymous

Just win baby

::virtual cigar::

0celo7

8:31 PM

I would like to apologize for what I said earlier.

It was a joke in poor taste.

@dmckee :)

Just win baby

About?

0celo7

About?

Sid

Congrats @dmckee Happy Father's life

0celo7

@Slereah what does O'Neill have for inextendible

Sid

@ACuriousMind doesn't dmckee get parental leave? :P

0celo7

8:33 PM

@Slereah having an endpoint is only significant if you define it on $[a,b)$

I should hope that it's independent of the parametrization

Sid

Kids are a big responsibility though. My mom still tells me how much I used to trouble her.. :P

Just win baby

Do you have Doctor Spock's baby book? @dmckee

Slereah

O'neill gives it as the existence of a continuous extension

His definition indeed only covers the case [a,b)

dmckee

@Justwinbaby No, we have a couple of more recent ones recommended by trusted doctors.

0celo7

@Slereah that's equivalent to having an endpoint by the gluing lemma

Slereah

8:36 PM

Yeah

Sid

What does a baby book do?

Just win baby

It's a classic @dmckee :-)

Sid

Tell you how to handle a baby?

dmckee

However, I think I was raised according to Dr. Spock. Whether that is a good or poor endorsement is a matter of opinion.

Slereah

Some books define extendible as the existence of a curve $\gamma'$ where $\gamma \subset \gamma'$

I dunno if they're somewhat equivalent

They probably are for the case [a,b)

Anonymous

8:38 PM

@Sid Sort of

Sid

Duh.. I mean, where's the fun of parenting if you are just going to follow a book?

Just win baby

His views on education are great.

No exams.

Anonymous

@Sid Not really. Sometimes it is difficult for first time parents to understand the infant's gestures.

Slereah

Also I'm not sure if they mean that the image is a subset or if that also includes the range

Anonymous

It's not like a rule book

Slereah

8:40 PM

But then again you can parametrize a segment to have infinite range but it's extendible

0celo7

@ACuriousMind Can you minimize TW3 and then continue playing?

ACuriousMind

I had no problems with that

0celo7

Me neither until just now!

I've tried everything

Just win baby

Have you OCed yet?

0celo7

no

@ACuriousMind :///// why does it all of a sudden not work

ACuriousMind

8:48 PM

I have no idea, it always worked for me!

0celo7

even when I do it in task manager, nothing

Just win baby

How hot does your computer run?

0celo7

60-70C when at full blast

Just win baby

I used to put a dry ice pack under mine.

0celo7

@ACuriousMind nooooooo

it's teamviewer

I have to have that on :/

Slereah

8:55 PM

I think I may have got the q loop business

ACuriousMind

What is teamviewer?

0celo7

@ACuriousMind a remote desktop program

ACuriousMind

It's responsible for you not being able to minimize?

0celo7

it monitors the screen

Slereah

The group is defined as the products of q-loops and stings

0celo7

8:56 PM

the Googles tell me that such programs brake the TW3 engine

ACuriousMind

Sooo...why not turn it off while you're playing?

Slereah

Hence a sting + path + sting + inverse path is part of the group, even though it has 2q corners

0celo7

Because I had to delete it...

Turning it off wasn't enough

Slereah

And the identity element is a constant sting

0celo7

Damn background processes

Slereah

8:57 PM

I think that's it

ACuriousMind

Well, I think you could probably manually kill the process in the task manager instead of "deleting" it.

Slereah

That explains everything Smith talks about I think

LegionMammal978

So if I'm interpreting this correctly, there can exist distinct mesons with the same quark/antiquark composition, correct?

Slereah

On the other hand, if you connect two q-loops, you obtain a 2q-loop

@LegionMammal978 yes

ACuriousMind

@LegionMammal978 Yes, e.g. if the spins are combined differently

Slereah

8:59 PM

@ACuriousMind not only that

You can have different states of the same spin

Different isospin though

0celo7

@ACuriousMind why are all the women in this game either hot af or grannies

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