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Sir Cumference

21:00

sigh

Slereah

@SirCumference I am very dumb

Sir Cumference

wait no

i'm confusing myself on a basic calc problem

it's $D(f \circ g) = (D(f) \circ g) \cdot D(g)$

enumaris

The fact that nobody questioned this error says something...

I don't know what it says

but it says something...

Sir Cumference

welp this is embarrassing...

enumaris

+1 to the physicists

Sir Cumference

21:05

i am a physicist. just not a good one :P

enumaris

+1 to Leibniz

Slereah

Can't beat $$\frac{df}{dx} = \frac{df}{dy}\frac{dy}{dx}$$

Sir Cumference

i need someone more competent in basic calculations to argue my point for me

Slereah

and $$\frac{df^{-1}}{dx} = \frac{dx}{df}$$

Sir Cumference

@Slereah and $\int_S \frac{\partial^2 f}{\partial x \partial y} dx dy = \int_S d^2 f$ for all $f \in C^2$

or not :P

Slereah

21:13

@SirCumference Close enough

Oh man

You should have seen the proof I used for the stochastic integral in my master thesis

It was bad and even worse it was common in the literature

Sir Cumference

$\frac{d^2 f}{dx^2}\cdot (\frac{df}{dx})^{-2} = d^2 f/df^2$

wait shit

i forgot i can't do basic arithmetic

argh whatever

enumaris

lol

Sir Cumference

welp i had to edit that 7 times to try and make a point

enumaris

Slereah is close to 10k

that says something about the point you were trying to make

I don't know what it says, but it says something

Sir Cumference

@enumaris says more about me than it says about the point :P

enumaris

21:19

maybe

Slereah

Soon I will have ultimate power

Sir Cumference

the power of reviewing flags

Slereah

Look on my works, ye Mighty, and despair!

bolbteppa

21:38

What is this $D$ witchcraft

Semiclassical

$[D,x]=1$ ftw

@ACuriousMind and therefore the empty set is called Alice, so that everything can be discussed in terms of Alice and Bob

Ryan Unger

22:18

@SirCumference I’m about an hour away from you

bolbteppa

'I love the viXra drinking game. Take a shot every time:
1. Someone cites Albert Einstein
2. P=NP
3. P!=NP
3. Paper is a single page
4. Paper is over 200 pages
5. Written in MS word
6. Riemann hypothesis solved
7. Handwritten equations
8. No citations
9. “Unifying theory”'

[lol](http://vixra.org/pdf/1908.0506v1.pdf): "A Calculation of the Spatio-Temporal Volume of the Universe

Authors: Jeffrey Epstein McNutly Comments: 1 Page.

In this paper (see below) I calculate the spatio-temporal volume of the universe and find it to be -1/12 McNutlys, a convenient unit introduced in this paper."

More fun about vixra [on reddit](https://www.reddit.com/r/Physics/comments/cvnlnn/is_vixra_any_good/).

enumaris

Is this a drinking game or is it suicide by alcohol poisoning?

bolbteppa

Probably the latter, I would totally expect to find the RH solved in a GR paper on there

enumaris

Slereah

You can define spacetime volume functions

enumaris

22:29

dxdydzdt

Slereah

They're used to define time functions

enumaris

xyzt

Slereah

Though it's usually normalized to 1

enumaris

that second one didn't work out formatting wise

bolbteppa

In McNulty units preferably

Slereah

22:29

Well it's a volume of rhe whole spacetime

A big one

enumaris

approximate as a hypercube

then do xyzt?

Slereah

Nah

Has to be finite

enumaris

just draw boundaries

manifold with boundary seems legit

Slereah

It's just not the Riemannian measure that is used

So that the volume of Minkowski space is finite

enumaris

what's the value?

-1/12 cm^3?

Slereah

22:35

That way they can define a time function by $t(p) = \mu(I^+(p))$

The value doesn't matter

As long as it's finite

enumaris

isn't that just the volume of the light cone?

should be finite for finite times

no? o.o

Wait...I'm mis-interpreting

Slereah

Yeah this isn't what a time function is

enumaris

it's the full volume of the entire future light cone of (p) that's...odd...

Slereah

A time function is just a function that is monotone increasing on every future directed timelike curve

It's one way to define a time function

enumaris

right...that's the standard one...

Slereah

22:41

Well there's no standard time function

Bc diffeomorphisms

Also not all spacetimes admit one

Because of closed timelike curves for a start

enumaris

I meant standard definition

Ryan Unger

23:02

You need to construct the measure Sam mentioned in a special way

I never did understand what HE wrote

I’m wiser now...should take a look

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