just ran across this cited on a cs blog (viola). for the game players, a game about oil extraction/ depletion, politics, econ, scarcity, environmental impact, etc. molleindustria.org/oiligarchy-postmortem seems like really great concept! whaddya think eg @Secret...?

The only possible thing I can say about that question is:

@vzn I have played this ages ago perhaps back in 2010

It is fun while it lasts

@JohnRennie : Speaking of LZ here is a pretty decent cover.

@Secret wow! you seem to have huge game experience/ bkg/ "vocabulary". (thought game was newer, a bit fooled by the recent blog.) anyway its based on the scientific theory of "peak oil".... was wondering does it also have any climate chg/ global warming aspects? a prime candidate...

It all thanks to jayisgames, they reviewed flash games, indie games, console games etc. for 13 years, until they recently gone dormant

I do like to say, however that that blog page of oilragy might suggest they have doen some upgrade, this is to be confirmed

I think peak oil is not our major concern or drive to convert to renewable energy now, compared to climate change

the weather just getting crazier every minute

aha! knew there might be some angle here. Hansen has two physics degrees. en.wikipedia.org/wiki/James_Hansen both undergrad/ Phd... active in astrophysics etc... now maybe on the list for "most wanted spkers" for the site =D

@ACuriousMind My accent can't be that bad, the owner of the Döner joint thinks I'm a legit Palatinite.

Or Rhinelander

Whichever it is in English

hmm, this question showed up on MSE a few minutes ago. Would it be better suited for PSE? math.stackexchange.com/q/1822348/137524

it seems like 'mesoscopic physics' or 'few-body physics' would be physically applicable, but that's a bit different from 'what kind of math'

Can I use latex diagrams on Stack Exchange?

Also is there a standard symbol for a square

Like $D$ for the disk

Or $S$ for a sphere

$[0,1]^2$ is probably clunkier than what you want @Slereah

a tad yes

I've also seen $I^2$ with the understanding that $I$ is the unit interval, but eh

I guess I can use any symbol, but y'know

I want one that feels right

Maybe $H$ for hypercube

I dunno

Can't use $S$ for square because then that could confuse with a sphere!

right. I do think $I^n$ for the n-dimensional hypercube is pretty standard

and really, $[0,1]^n$ isn't that bad.

I guess I'll go with $I^2$

@Semiclassical strictly speaking, you should be asking the people at Math SE. Unless they decide that it's off topic there, it's none of our concern.

@Slereah you can make a PNG (or JPEG or so on) image however you want, including with LaTeX, and upload it, but otherwise, no.

aw

@Qmechanic Thanks, that's a better version that any of the live LZ recordings I've got :-) I've seen Zeppelin live (last time in 1979) and they always butchered their songs when they played them live. That Virtual Zeppelin version is at least as good if not better than on the album.

I love the track Ten Years Gone. It was on a TV programme I watched two days ago about music and fashion, and I've been humming the song ever since.

The first time I heard Going to California on classic rock, it was in my head for days @JohnRennie

hard to say which song of theirs i like the best, but that one is definitely up there

@Slereah $I^n$ is standard.

yeah I guess

Pretty lame

I prefer to keep I for the identity

The identity is $\mathrm{id}$

but then you're gonna confuse it with

Huh?

id software

Never heard of it.

They made DOOM

You phillistine

@Slereah Never played it.

@Slereah iddqd

@DanielSank Hi!

@Danu Lee is so good.

The final comment here is classic :D

Why does Lee have brown stains on it...

Stop wiping yourself on it

@Slereah At least I poo in the loo

Proving the fact that the normal bundle is a smooth manifold is the worst given Milnor's definitions.

I think you have to show that it's a subbundle of the tangent bundle of the embedding space

Ewww

It's nice that it links to a useful meta post, too.

(Yes, that is a self-congratulatory comment. Deal with it.)

:D

@ACuriousMind I'm at a complete loss as how to start problem 11 in Milnor. The "usual" method is to use slice charts and local frame fields, but Milnor doesn't introduce any of that in the main text.

Then there's more advanced proofs via quotient bundles, but that technology is certainly not available here.

Problem 10 was already hard enough and I'm not sure I did it correctly.

Not having the basic fact that $\{\partial_i\}$ form a frame in your chart is a ridiculous handicap.

I'm feeling like maybe it's a consequence of problem 9, which I haven't done yet.

But I've never seen these bundles described as a graph before.