The h Bar

Novalium Company

7:48 AM

hello

Slereah

8:43 AM

How did a mathematician who died at 20 accomplish more than I'll ever do

Student404Mus

9:14 AM

0

Q: How to determine the isospin of a pair of nucleons?

While I was reading from the book of Brussaard on shell-model applications in nuclear spectroscopy, he mentioned that isospin of a neutron-neutron pair couple to $T=1$. On the other hand, if it was neutron-proton pair, the isospin couples to either $T=0$ or $T=1$. Now, my question is I can't see ...

Novalium Company

Why can't we somehow power the human body using electricity? Like, replace all the organs with mechanical alternatives and boom. Like, we can remove eating, drinking, peeing and pooping all together.

Unfortunately, other cells will still need food, water, oxygen... Why don't we remove the body altogether, learn to keep the brain alive, and attach it to mechanical parts?

The thing is, the brain cells will need food, water, oxygen... ahh...

Slereah

We can barely put in slightly different organs as it is

it's gonna be tough to replace everything

Also scalability issues

Novalium Company

:(

Slereah

it's hard for us to make electronic versions of human systems on the same scales

Novalium Company

Well, the only other option is... roll the drums... AGI (and probably superintelligence)

Slereah

9:21 AM

also overall we are terrible at linking things to nerves

Ajay Mohan

How knowledgeable should an incoming PhD student in the field of high energy theory be?

Slereah

We can't even repair nerve damages properly

Ajay Mohan

The major obstacle I feel is that it takes a lot of prerequisites (like general relativity, quantum field theory, string theory) to even understand the research problems in this field: Without these prerequisites, it's extremely hard to understand the research papers in this field. And these prerequisites are generally taught in the beginning of a typical graduate program.

Slereah

You should be knowledgable on the relevant classes you had before, ideally

If you are knowledgable in what comes afterward that is a bonus certainly

Part of the goal of the PhD is you learning the field

first month or so you're just reading a lot of papers and books

Novalium Company

@Slereah Can we hook up a mechanical arm for example to the motor cortex of the brain (give it action wire and feedback wire) and see if the brain can adapt and learn to control it?

Ajay Mohan

9:27 AM

I'm applying for a graduate school which asks the PhD candidates to submit a statement of interest that address the following questions in particular: (1) your area of interest ? (2) specific problems you would like to work on? (3) can you suggest some methods to deal with such problems? [This note is written beside it: The write-up should reflect original ideas. Don't write a general essay describing the area]

Novalium Company

I mean, it should be possible.

Ajay Mohan

(1) is reasonable. But is it reasonable to expect (2) and (3) from an incoming PhD student

dsm

OneNote is trash. kept crashing and then it said "some files have been corrupted, reset to restore to the previous save," did that and now it can't open anything. that is all my work for four texts. WHAT IS HAPPENING. and their so-called cloud storage has failed miserably as well. I need a drink.

Slereah

(2) can be asked, although overall your thesis advisor is likely to give you your task

@NovaliumCompany Things are getting there, yes

Novalium Company

@Slereah yay... cyborgism.

Slereah

9:30 AM

Well don't celebrate too soon

As far as I know, prosthesis like that can't feel yet

So you basically lose all sensations in your arm

I'm doing proofs on vector spaces and boy am I sick of saying "construct a Gram-Schmidt basis"

Ajay Mohan

@Slereah Hmm. I feel I don't have the necessary prerequisites to even understand most research problems. And now I'm being asked to pick problems that I would like to work on... Most probably it just reflects my poor preparation during my undergraduate study.

Knight

@Slereah Whom are you talking about?

Novalium Company

@Slereah Why? I mean, can't you just make the robotic arm with some accelerometers and touch sensors?

Slereah

@Knight Evariste Galois

@NovaliumCompany The tricky part is connecting it to the nerves

dsm

@Slereah $\text{caGSb}\equiv\text{construct a Gram-Schmidt basis}$

Novalium Company

9:36 AM

@Slereah Why? What's the problem.

Knight

@Slereah He died at 20?

Slereah

@NovaliumCompany they are small and many

@Knight In a duel, yes

he died the most gangsta way

Novalium Company

@Slereah Aren't they also very adaptive (neuroplasticity). Whatever you plug in there, they should be able to adapt with it to control it, no?

Slereah

I invite you to try it yourself

extract your own nerves, connect them to a USB plug

Novalium Company

@Slereah I'll just plug the inputs wires somewhere in my arm-controlling motor cortrex part and the feedback wires into the arm-feedback somatosensory cortex and boom.

Knight

9:40 AM

@Slereah With whom he fought?

Slereah

Things are uncertain, but apparently someone stole his gal

Novalium Company

@Slereah It's much easier to go for the "It's not that simple" conclusion than to actually think about how it could be done, eh?

Of course it's not simple, but it's doable.

Slereah

@NovaliumCompany Well, people have tried!

Successes are limited

Novalium Company

Try again.

Increase success rate.

Slereah

I do know that bionic eyes are a thing, for a start, but the resolution is fairly low

Novalium Company

9:42 AM

@Slereah Yep, that's amazing! Also hearing devices.

Knight

@Slereah Of which country was he?

Slereah

Well 1) I am not a doctor, so I would rather not do it myself and 2) Ethical boards tend to frown on human experimentation

@Knight France!

Novalium Company

@Slereah If the human agrees, why not? It's his choice to risk his life for the greater future.

Knight

@Slereah Your paisan

Slereah

@NovaliumCompany Tell that to the ethics board!

Novalium Company

9:44 AM

@Slereah Morality and ethics are just the result of evolution's attempt to keep us alive so we can reproduce...

Slereah

Kidnapping and human experimentation would make medicine and sociology go much faster, but people tend to not approve

Novalium Company

Evolution's like: Don't kill people, they need to f*ck.

Slereah

Just having people volunteer is not overall a great sign of ethical happenings, because people may not understand the risks properly or have other incentives to try even for high risks

Knight

Sam sir I think you talk about Sociology because in France it’s quite famous (because of Georg Simmel, Comte) :)

Slereah

ie paying poor people to get experimented on

Trust me history has been going on for a while, we don't have a lack of examples of what a lack of ethics in human experimentation looks like

Knight

9:50 AM

I don’t know why but to me Galois Theory seems more philosophical than mathematical.

Slereah

Just look up unit 731 if you don't mind the horors of history

or you can look up MK ULTRA, for a slightly more fun example

Novalium Company

10:08 AM

@Slereah Morality is a simple mechanism that evolution has embedded in our brains so we can preserve life (and most importantly, continue it). Everything you consider immoral is something that decreases the chances of someone reproducing. It's quite simple and honestly, doing some experiments on volunteers can help with overpopulation. Humanity has a long history of not obeying evolution anymore.

What do you think about that?

Slereah

I think it's a bit simplistic, but that doesn't mean we should start human experimentations :p

The fact that something stems from evolution doesn't mean we can just dismiss it

Our desire to remain alive is also such a thing, and yet you don't see me jumping off a bridge

Novalium Company

@Slereah Of course, I totally agree with that, but in our overpopulated world, it's not unacceptable, considering the fact that it's a contribution to technological progress.

Slereah

Well, if you believe it this strongly, I advise you offer yourself as a human guinea pig

Novalium Company

@Slereah I don't want to.

Volunteers buddy.

Anyways, f*cking school time.

Cya :---)

bolbteppa

12:49 PM

Who wants to splain me this proof of Jordan-Holder:

ia800603.us.archive.org/BookReader/BookReaderImages.php?zip=/32/…

Slereah

wouldn't those pages already be doing the explaining

bolbteppa

Yes if you're smart

Slereah

Bad news then

I am dumb

I guess it's basically building a bijection between two permutations?

bolbteppa

mathworld.wolfram.com/Jordan-HoelderTheorem.html

Right, so he begins by claiming the proof is similar to the method he uses to show two permutations of $n$ things are isomorphic

An 'invariant' subgroup is a normal subgroup, i.e. a subgroup $H$ of $G$ such that $g H = H g$ which basically means you can split the group up into equivalence classes using $H$ as the class of elements equivalent to the identity

So basically, the idea is a group could have multiple different maximal normal subgroups, and each of them can have further maximal subgroups, and the number of them and the way the quotients will look will be the same up to ordering

Slereah

1:09 PM

I'm afraid I'm not big on group theory

bolbteppa

Yeah, but this is from Weyl's QM book so it's physics apparently :p

Slereah

Weyl was a fake physicist

We all know he was just a mathematician

bolbteppa

1:24 PM

planetmath.org/exampleofajordanholderdecomposition

That's a really shocking result no? For something as complicated as a group, the whole $12$ divides into $6, 2, 1$ or $4, 2, 1$ or $6, 3, 1$ stuff, it's like a prime factorization of a group or something

bolbteppa

1:40 PM

Consider $C_{12} = \{e^{\frac{2 \pi i k}{12}} , \ k = 0, \ldots , 11 \}$. We note $C_6 = \{e^{\frac{2 \pi i 2k}{12}} , k = 0, \ldots , 5 \}$ is a subgroup of $C_{12}$ and $C_{12} \backslash C_6 = C_2$. We also note that $C_{4} = \{e^{\frac{2 \pi i 3k}{12}} , k = 0, \ldots , 3 \}$ is a subgroup of $C_{12}$ and $C_{12} \backslash C_4 = C_3$. The intersection of $C_6$ and $C_{4}$ is $C_6 \cap C_4 = \{0, e^{\frac{2 \pi i 6}{12}} \} = C_2$.

We note $C_4 \backslash (C_6 \cap C_4) = C_4 \backslash C_2 = C_2 \simeq C_{12} \backslash C_6$. The first step of the proof seems to be showing this is a general result.

Knight

@bolbteppa Can you recommend me some poems or songs which talks about past? I mean you see the opening lines of “book of my life” by Sting

**Let me watch by the fire and remember my days
And it may be a trick of the firelight
But the flickering pages that trouble my sight**

bolbteppa

Here is a good song about the past

2Pac - I Ain't Mad At Cha (Dirty Version) HQ

►

How about

Ice Cube - It Was A Good Day (Official Video)

►

Knight

2:35 PM

@bolbteppa Hip-hop doesn’t touch the heart you know. I need something calming, if you have time please listen to book of my life by sting, or some poems from great poets like Wordsworth, Keats, Blake etc.

Johan Liebert

What's the point of making it a privilege to see separate up and down vote count when someone willing to do so can easily check it with timeline? (Even the users who aren't logged in)

Slereah

The feeling of power

JMac

9

A: Shouldn't the timeline page be only available for members with the Established Users privilege?

The "view vote count" privileges is less about restricting access to the specific vote counts and more about limiting load on the servers. From Jeff's answer on Show Total Votes (or Up/Down Votes) The total vote count (score) is denormalized, but the individual up/down vote counts are not. ...

Johan Liebert

2:53 PM

@JMac thanks!

Semiclassical

@Knight “Hip-hop doesn’t touch my heart” ftfy

Knight

3:14 PM

@Semiclassical Does it touch your heart?

PM 2Ring

3:25 PM

@Knight Here's a beautiful song about the past by the Beatles, performed by twin sisters from Austria:

In My Life - MonaLisa Twins (The Beatles Cover)

►

Knight

3:41 PM

@PM2Ring Which is your favourite poetry?

@PM2Ring I want to ask, my school’s name is St.Michaels so should the students be called Michalites or Michaelians?

Yuvraj Singh...

@PM2Ring hello sir!

PM 2Ring

@Knight I've never been much of a fan of poetry. I prefer songs. :)

Hi, @Yuvraj.

@Knight Hmmm. I think I prefer Michaelians.

Jake Rose

Anybody got an idea if this is along the right lines?

Actually nvm got it

Knight

@PM2Ring I too, but some of my illiterate friends are using Michealites.

@PM2Ring Please suggest me some poetry :(

Johan Liebert

3:56 PM

@Knight have you tried The Rime of the Ancient Mariner? It is one of the best poems I have ever read.

Knight

@JohanLiebert Yeah, I really like Samuel Taylor Coleridge

John Rennie

@Knight The ballad of Kerrymuir

Knight

@JohnRennie Aha! What is it about?

John Rennie

Read it and find out!

Knight

Search results are giving for “ball of kerrymuir”

@JohnRennie Is it a poem or a song?

John Rennie

4:00 PM

That is another name for it. Also The Ball o'Kirriemuir.

Knight

Is it a song? By that moustache man?

@JohnRennie What about poetry? Suggest me something

PM 2Ring

@Knight Here's a silly but clever song by Annie Ross: Twisted, (Wardell Gray wrote the tune). Joni Mitchell did a good version of it back in the mid 1970s.

John Rennie

@Knight I'm not a huge fan of poetry to be honest. I much prefer doggerel. Anything by Ogden nash for example.

Knight

@PM2Ring I think there is a personal connection is that song with you. :-)

PM 2Ring

@Knight Maybe... :) Here's something of a more serious but surreal nature: In the Court of the Crimson King.

John Rennie

4:13 PM

Ooh, King Crimson :-)

Takes me back to the days of my youth.

Knight

@PM2Ring It’s great great song. Someone is writing in comments that it is about Cold War and loneliness .

PM 2Ring

@JohnRennie You might like this remix of Ladies of the Road. The actual song starts at 2:30, but the intro is interesting

Knight

People in comments are comparing it with Shine on you Crazy Diamond

John Rennie

For some reason I was never very fond of Islands.

PM 2Ring

@Knight Pink Floyd & King Crimson were contemporaries. A lot of people liked both bands, but there was also some strong rivalry. I suppose King Crimson were a bit more intellectual and "arty", but Pink Floyd had more commercial appeal and success.

Knight

4:26 PM

@PM2Ring King Crimson was a band or a single man?

PM 2Ring

@JohnRennie Me neither, but I enjoy the humour abd wildness of Ladies of the Road

John Rennie

@Knight that's not a simple answer :-)

They are a band, but arguably the main man always was and continues to be one person - Robert Fripp.

PM 2Ring

^ That

Although I don't think Fripp ever had much input on the lyrics.

John Rennie

Red is probably my second favourite KC album. The first being ITCOTCK of course.

Knight

@JohnRennie hahahahaha. Was he rich like Waters?

John Rennie

4:29 PM

No. King Crimson never had that much success.

Knight

@PM2Ring John sir told me that Waters wrote all the lyrics of Animals, so isn’t Waters a clear winner?

John Rennie

I think Fripp is reaonably well off, but not a multimillionaire like Waters.

Knight

I think Brits have a habit of liking their paisano :-)

John Rennie

@Knight personal wealth is not terribly reliable guide. Taylor Swift is richer than Waters and Fripp put together :-)

PM 2Ring

@JohnRennie Of course. :) I do like In the Wake of Poseidon, apart from the penultimate track, which drags on for too long (IMHO), and it's a blatant rip-off of Gustav Holst's Mars, the Bringer of War.

Knight

4:32 PM

Taylor Swift is more famous because she is a woman.

John Rennie

In the Wake of Poseidon is so similar to the first album. It's good, but it feels like they used all their best ideas in the first album and ITWOP was the leftovers.

PM 2Ring

My all-time favourite KC track is Starless

John Rennie

Yes, which curiously is not on the album Starless and Bible Black. That confused me as a young prog rock fan.

PM 2Ring

Yeah. It took a while for Fripp to be convinced about Starless, so it didn't make it onto Starless & Bible Black

Knight

Did you use to listen songs on radio? As in your time (I’m not sure about PM2RING) Internet wasn’t there

John Rennie

4:37 PM

@Knight Back in the 1970s in the UK there weren't many music stations. Basically just BBC radio one, and that mainly played chart records.

If you were interested in anything non-mainstream there wasn't much of interest on the radio. You had to buy albums.

Knight

Oh! Means many singers were left unheard

Which brand of shirts or trousers do you wear? @JohnRennie @PM2Ring

Be careful that may show how rich you are :-)

Johan Liebert

Anyone (other than me) keeping track of coronavirus? 1850+ dead. worldometers.info/coronavirus

John Rennie

@Knight I'm a major scruff. I wear tee shirts and slacks unless I'm forced to dress smartly.

Knight

@JohnRennie Which brand of T-Shirts? Tommy Hilfiger, Allen Solly, Louis Philippe, Nike?

John Rennie

Unbranded. I generally buy Fruit of the Loom as they seem to wear well.

Knight

4:47 PM

You’re lying:-)

John Rennie

I'm going to slump into my armchair and digest lunch. See you all tomorrow.

Knight

@JohnRennie Do you have a 6000$ suit?

John Rennie

@Knight I don't think I own anything worth $6000. Well, except for the house.

PM 2Ring

@JohnRennie Here's an Aussie prog rock track that had commercial success. The recorder was played by a guest, Bon Scott, from the band Fraternity. Bon went on to become the 1st singer of AC/DC.

Blackfeather - Seasons Of Change Pt.1

►

Johan Liebert

@Knight he is a millionaire

Knight

4:49 PM

@JohanLiebert We know :-)

He is very rich

Johan Liebert

Rich with knowledge (richest)!

John Rennie

I wonder if kidneys are worth $6000 on the black market.

Probably not 60 year old ones :-)

Knight

@JohnRennie They do.

Johan Liebert

@JohnRennie they are worth more than that.

Knight

@JohnRennie I cannot say anything about brain

John Rennie

4:51 PM

@Knight well there you go then, I do own something worth $6000 :-)

Knight

Hahahahaha

Johan Liebert

@JohnRennie you own a brain worth trillions!

John Rennie

@Knight I'd be surprised if brains were worth anything. You can't transplant a brain. Or at least, not yet.

Knight

@JohnRennie I can wait

John Rennie

They probably don't even taste good. I've eaten lamb's brains and they were very bland.

Johan Liebert

4:54 PM

@JohnRennie Fried human brain is tastier than you think! 😂 😂

Knight

@JohnRennie Why did you do that? If (God forbid) you get Lamb’s brain then who would help us

PM 2Ring

@Knight Yes, I used to listen to the radio when I was younger. I still do, from time to time, but mostly small community stations, not commercial ones, and I usually listen to them via the internet.

In the mid 1970s, the Australian government broadcaster (the ABC) launched an alternative AM rock station 2JJ, which became an FM station JJJ a few years later. They played all sorts of stuff you'd never hear on commercial stations. But I stopped listening to them in the late 1990s because they played too much rap for my tastes.

John Rennie

@JohanLiebert :-)

Knight

@PM2Ring Rap? I thought you had a tender heart :)

PM 2Ring

@Knight BTW, I'm a year or two older than John Rennie.

Knight

4:56 PM

@PM2Ring OH! You never disclosed it! My God

😁

Johan Liebert

@PM2Ring I used to think that you were around 30! Quite a surprise.

PM 2Ring

@Knight I have a very low tolerance of rap & hip-hop. But I do own a copy of this album, which has a few brilliant tracks: en.wikipedia.org/wiki/Hypocrisy_Is_the_Greatest_Luxury

Knight

@PM2Ring At your time I think Alan Turing was not that famous but you chose him as your inspiration. You’re good you’re something :)

PM 2Ring

@JohanLiebert I wouldn't mind being 30 again... I turned 60 last year.

Knight

Announcement: Three scores 1 year ago PM2Ring sir was born and with his great intellect he is helping guys like me.

Johan Liebert

5:04 PM

@PM2Ring correct me if I am wrong. I have observed that many (high rep) users here are quite active on stack overflow. It might be because they are in the field of scientific programming or something related. Is there any specific reason for this?

PM 2Ring

@JohnRennie You also had the "pirate" stations, though... if you were in the right location to receive them. Some of the best presenters / programmers on 2JJ had been on those pirate stations before coming to Oz.

@JohanLiebert I'm not sure, but there are quite a few scientist types on Stack Overflow who aren't employed as programmers, but who do write code for their science work.

ACuriousMind

5:32 PM

@EmilioPisanty That looks like undeleting to delete-by-flag instead to me.

Johan Liebert

Beat Saber - Rasputin One Handed

►

I would like to play this.

Aaron Stevens

@ACuriousMind What would be the point of that

ACuriousMind

@AaronStevens delete-by-flag (i.e. with a rude/abusive or spam flag) feeds certain automated blocking systems that a manual delete doesn't

Aaron Stevens

Ah yeah, that makes sense

Sir Cumference

hmm, i gotta find something to learn after college

i've only been thinking about physics/math these four years

Aaron Stevens

5:47 PM

More physics and math?

Sir Cumference

welp that'll probably be the case :P

but like i don't wanna get too narrow in what i know

Aaron Stevens

Then don't :P

JMac

6:13 PM

@JohanLiebert Beat Saber is really fun. I own a pretty low-end VR setup and Beat Saber. The biggest hassle is having a small apartment and having to move stuff when I want to play standing games like that.

dsm

6:39 PM

@JohanLiebert I made it across the Hong Kong border two days before they started doing two weeks of required quarantine. >150million Chinese citizens now under lockdown. Crazy.

Johan Liebert

@dsm so you were traveling there?

@dsm anyways, be safe be healthy.

Semiclassical

7:04 PM

@Knight mine personally, no. But that’s a sample size of one.

I’m quite confident there are people for whom hip-hop can be emotionally-engaging

JMac

7:22 PM

@Semiclassical I've definitely been emotionally engaged by it before. I haven't listened deeply to it in awhile; but when I used to listen to it more there were quite a few songs with an emotional impact on me.

Aaron Stevens

7:33 PM

Sometimes when tutoring calculus I come up with some convoluted puzzles

What is the function $f(x)$ such that $\frac1x\cdot f'\left(\frac1x\right)=x\cdot f'(x)$

Where $f'$ is a derivative with respect to $x$

Maybe I should say a function; I am not sure if the function I am thinking of uniquely is like this :P

Yeah there are infinitely many answers actually

And constant functions don't count :P

dsm

7:54 PM

@JohanLiebert Indeed, really interesting time to be over there. Vast majority of the shops, restaurants, roads, and public transportation was empty by the time I was leaving. Felt like a ghost town. In good health though, cheers

Aaron Stevens

1

A: Meaning of matrix elements

Read these expressions from right to left. Your expression $\langle\phi|Q|\psi\rangle$ can be read as "the amplitude of finding the $|\psi\rangle$ state in the $|\phi\rangle$ state after measuring the observable $Q$." Mapping this onto your spin example, $\langle S_z;+|S_x|S_z;+\rangle$ is the am...

Is this correct?

@dsm I think I am thrown off by your wording a little bit

dsm

8:17 PM

@AaronStevens Sorry, it's 4am over here and I'm sleep deprived. Didn't want to get into normalization because the question was aimed at interpretation, but I see that wasn't a good approach. Deleted the post because I didn't want to go down the path of editing when I should be asleep. I appreciate the comment

Novalium Company

Modulus with negatives is weird. Like -29 mod 4. 4 * -7 = -28, therefore, the number 1 should be the answer, but it's 3... wtf?

ACuriousMind

@NovaliumCompany You need to preserve the signs! The answer should be -1, which mod 4 is the same as 3

Novalium Company

the difference between -29 and -28 is 1, isn't it?

Aaron Stevens

-28 mod 4 is 0

ACuriousMind

@NovaliumCompany No, -29 - (-28) = -1

Novalium Company

8:23 PM

@ACuriousMind Sorry it's a bit late. Soo, the answer should be -1, not 3.

ACuriousMind

Well, -1 and 3 are the same mod 4, and by convention we choose to represent numbers mod 4 with 0,1,2,3, so both -1 and 3 are "correct" as being the same as -29, but 3 is the conventional choice.

Aaron Stevens

Nailed it

Novalium Company

@ACuriousMind 3 is not the difference between -29 and -28, -1 is.

ACuriousMind

@NovaliumCompany ...so?

Novalium Company

@ACuriousMind So -29 mod 4 is -1. I don't understand where that 3 comes from.

JMac

8:27 PM

@NovaliumCompany 3 is the difference between -29 and -32.

ACuriousMind

You seem to be using an idiosyncratic definition of what "mod 4" means.

Aaron Stevens

@NovaliumCompany -29 is 1 less than a multiple of 4

so it is -1 mod 4

It is also 3 more than a multiple of 4 (-32 + 4 = -28) so it is also 3 mod 4

Novalium Company

The way I do it is: what integer you can multiply 4 by so to end up as close as possible to -29. Now take the difference between -29 and that 'as close as possible' number

JMac

@NovaliumCompany Now follow that procedure with the exception that your result has to be positive.

Aaron Stevens

{... ,-11, -7, -3, 1, 5, 9, 13, ...} are all equal mod 4

Novalium Company

8:30 PM

The closest positive number to -29 is 1, so what do I multiply 4 by, so to end up at one... is that it?

ACuriousMind

@NovaliumCompany Then there you've made a conventional choice to represent 3 mod 4 as -1 mod 4 (note that this procedure also gives -1 for 3, since 4 is the closest 4-multiple to 3 and 3-4 = -1).

Novalium Company

I am confusion

JMac

@NovaliumCompany The value that you calculate is conventionally positive (i.e. not -1)

ACuriousMind

Whatever you're reading that says 3 is the answer has made a different conventional choice (and much more common one)

Aaron Stevens

Oops, I picked the wrong equivalence class

Novalium Company

8:34 PM

I got it.

@JMac this helped

So to end up at a positive result, the number I'm subtracting from -29 must be greater than -29. So if I choose -30, I can't multiply 4 by a solid integer, but I can do so with -32.

ACuriousMind

-32 is not greater than -29 by traditional definitions of "greater than" :P

Novalium Company

sure but it works for the modulus to be positive

Aaron Stevens

@NovaliumCompany It just depends on which number you subtract from the other

Novalium Company

So take the example of -14 mod 2. I can do 2 * -7, which yields a difference of 0. I don't remember the answer being that :P

helluu?

oh nvm

the answer is that.

ACuriousMind