/sci/ - Science & Math

>Equation
<span class="math">e^\tau=1[/spoiler]
>Sect of Science
You mean like religion or category? I'd say the latter, because it doesn't seem retarded...
Computer "Science" or quantum physics (in case CS doesn't cut it, because it is something more than just science)
>Film
Don't watch much. I'd say
The Thing
>Documentary
Don't watch much... I prefer to read stuff.
I don't have any
>Sandwich filling
I avoid bread because it's a low tier food (unless we are talking about regular white bread, which is shit tier).
Grilled chicken

Sage for poll, it will get enough bumps from other people, who won't read anything in this thread, but will post their worthless infos.

>>3710511
By sect i ment section/category.

Okay.jpeg

>>3710511
So Tau equals zero?

>Equation
Maxwell-Heaviside electromagnetic shit. 4 of them.

>Sect of Science
Physics

>Film
Der Freie Wille

>Documentary
I don't know... There is a docu about fermat-wiles theorem.

>Sandwich filling
Cheese and Jam.

>>3710533
I knew I will fuck something up...
I obviously meant <span class="math">e^{i\tau}[/spoiler].

>unsertanty princespul
>kwanza fiziks
>9/11 Wud An Insyd Jab
>9/11 Wud An Insyd Jab
>Mayo & Garlic

>Equation
The Black-Scholes Equation
>Sect of Science
Complex Adaptive Systems/Emergence
>Film
School of Rock
>Documentary
Garbage Warrior: http://www.youtube.com/watch?v=YrMJwIedrWU
>Sandwich Filling
Chorizo

>Equation
e^i*tau=1
>Sect of Science
physics, motherfucker
>Film
pulp fiction
>Documentary
sagan's cosmos, also top gear, and fuck you it's not a documentary
>Sandwich filling
cheese+salami

Oh goody...survey time!

>Equation
pV=nRT
>Sect of Science
So damn hard to choose but Chemistry and Cybernetics are big scorers by me.
>Film
V for Vendetta
>Documentary
I really can't pick ONE :/ Prefer reading as documentaries are usually watered down a bit to meet the less factually minded minds of the public.
>Sandwich filling
Tuna, Cucumber, Lettuce and cress. Now i'm hungry. :C

>Equation
d = s x t
>Sect of Science
Chemistry
>Film
The Shawshank Redemption
>Documentary
David Attenbourough's: Life
>Sandwich filling
I don't like sandwiches of any sort.

Pascal triangle
Biology
The princess bride
who killed the electric car
Either liverwurst or chocopasta

>Equation
Schroedinger Equation

>Sect
Chemistry or Physics

>Film
Do not into film

>Documentary
Do not into documentary

>Sandwich filling
Do not into sandwich

>>3710797
I don't think Euler's identity is verified for tau.

Equation: picture related

Sect of Science: Physics

Film: don't have a favorite, have a list of films in a similar high tier above others, though

Documentary: Young Yakuza

Sandwich filling: Butter + Jam

>Equation
Not sure
>Sect of Science
Physics and biology
>Film
Ghost in the Shell
>Documentary
I'm not sure, don't watch many, like others have said
>Sandwich filling
roast beef

>>3710965
Pretty sure that's PAM Dirac.

>Equation
<span class="math">{\Gamma'}^k_{ij}=\frac{\partial x^p}{\partial y^i}
\frac{\partial x^q}{\partial y^j}
\frac{\partial y^k}{\partial x^r}[/spoiler]
>Sect of Science
philosophy maybe, not sure
>Film
depends on genre
>Documentary
Helvetica
>Sandwich filling
a sweet Hamiltonian

>>3710482
42 minutes late

>Equation
<span class="math">{\Gamma'}^k_{ij} =
\frac{\partial x^p}{\partial y^i}
\frac{\partial x^q}{\partial y^j}
\frac{\partial y^k}{\partial x^r}\Gamma^r_{pq}[/spoiler]
>Sect of Science
philosophy maybe, not sure
>Film
depends on genre
>Documentary
Helvetica
>Sandwich filling
a sweet Hamiltonian

>>3710482
42 minutes late

people actually have favourite equations...

>Equation
Schroedinger's Equation
>Sect of Science
Physics
>Film
Pulp Fiction
>Documentary
Cosmos
>Sandwich filling
Mayo

>>3711084
So, your favorite equation is the tensor transformation law for the Christoffel symbols of the second kind? That doesn't even completely characterize them, just their tensor type.

>Equation
<span class="math">-\frac{1}{N}\log p(X_1,X_2,\dots,X_N)\to H(X)[/spoiler]
>Sect of Science
CS / Information Theory
>Film
Primers (maybe not my favorite film, but clearly the one that comes to my mind first on /sci/)
>Documentary
Google
>Sandwich filling
Ham, Emmental, Pickles (european extra thin ones, not fat bad tasting US ones), salad, tomato, butter

>>3710482
>Equation
Euler's, as it contains the five most important numbers in math (and the only two transcendentals you care about)
>Sect of Science
Physics, obviously. If that's too broad, I like numerical analysis.
>Film
The Big Lebowski
>Documentary
Bloods and Crips: Made in America
>Sandwich Filling
Usually go for the deli standard, meat (most often ham, but roast beef a close second) on a hero with lettuce/tomato/pickle/onion

>>3711172
The Christoffels are my favorite tensors - I can't help it.

>>3711206
PrimerS?
And what is the left side of the "equation"?

>>3710482
>Equation
The Gauss-Bonnet theorem
>Sect of Science
Mathematical Physics
>Film
LOTR
>Documentary
I don't watch documentaries
>Sandwich filling
Feta cheese

>>3711219
>PrimerS?
>And what is the left side of the "equation"?

"Primer" indeed, sorry.
In the left side of the equation, the <span class="math">X_i[/spoiler] are i.i.d. RVs <span class="math">\sim p(x)[/spoiler]. <span class="math">H(X)[/spoiler] is their entropy. This equation is the asymptotic equipartition property, which tells you that as you keep drawing a random variable, almost all (infinitely long) sequences happen with roughly the same probability. It is extremely important in data transmission and compression.

>Equation
Heisenberg uncertainty principle

>Sect of Science
Microbiology, immunology.

>Film
Nausicca & the Valley of The Wind

>Documentary
Assisted Living Dracula

>Sandwich filling
You can fill those things?

>>3711255
i.i.d.?

infinitely long sequences? Is p a measure for the correlation of infinitely many X_i? Is X on the left side a typical string? Is there a limit involved?

>Equation
I'll keep it simple and go with E = mc^2
Overused I know, but it's profound and awesome as fuck so screw you.

>Sect of Science
I like a lot so I don't have a "favorite". I am going into Biochem/Neurobiology/Genetics though so I definitely like that. Quantum Physics, Cosmology, Organic Chemistry are all cool too.

>Film
Don't have a favorite but there's lots that I like.
The Fountain, There Will Be Blood, American Psycho, Eternal Sunshine, Eraserhead, The Graduate, Seven Samurai, Run Lola Run all off the top of my head.

>Documentary
Well Cosmos is one series obviously. the Atom series and the Chemistry series hosted by Jim Al'khalili are both awesome as well. Also How the Earth Made Us w/ Iain Stewart. Pretty much anything BBC.

>Sandwich filling
Depends on the sandwich. Reubens are godly though, but any sandwich can be good if made properly.

>Equation
Heisenberg equations of motion,
<span class="math">\frac{d}{dt}a = i[H,a][/spoiler]
>Sect of Science
Physics
>Film
Dunno, Alien maybe.
>Documentary
Err...
>Sandwich filling
Ham, cheese and lettuce.

>>3711307
>I'll keep it simple and go with E = mc^2
>E = mc² : old and busted
>p² = 0 : new hotness

>>3711286
Ok.
i.i.d. stands for independent and identically distributed. Actually, it just means that you repeat the exact same event (throwing a dice, drawing a card or whatever) and previous results don't affect the outcome of the following results.

Let's assume that you are typing text on your keyboard. Each letter has a given chance to be drawn. In reality, there are strong relations between what you have just typed, and the probability distribution of what letter you will type next. But whatever, let's assume that you type letters with the same probabilities as in English, but with no dependence to each other (and anyway, the theorem is still true if the dependencies are not too complicated).

So X_1 is the first letter you type. X_2 is the second etc.
Then, the probability of a long sequence of letters, say "moihremtosugert", is the product of the probabilities that X_1 is m, X_2 is o, X_3 is i, etc. Obviously, as we increase the length of the sequence, the overall probability goes down. The probability that your first 4 letters are "moih" is greater than the probability that your first 5 letters are "moihr". So we add a "1/n" at the beginning of the equation and get in log space in order to have something that will work with an infinite number of letters (basically, log means that you'll add the probabilities instead of multiplying them, and then you take the mean).

(to be continued)

>>3711377
(rest of the post)

So now, what it tells is that the probability of that thing tends to a constant. This convergence is a "convergence in probability", which means that with high probability, an infinite sequence will have a probability (logged and meaned) that converges to the constant. These sequences are called "typical sequences".

Non-typical sequences, for instance "zzzzzzzzzzzzzzz..." where the probability to get "z" is very low compared to the other letters, can happen, and will not have an overall probability close to H(X), but they are so rare that they have no weight: they happen with probability 0.

>>3711379
I just gave a look at the wikipedia article http://en.wikipedia.org/wiki/Typical_set and it looks OK if you want a more proper explanation.

>Equation
The Drake Equation. It isn't all that impressive in its own right, but it's neat when you consider how we probably aren't alone, and how vast the universe is.
>Sect of Science
Bioinformatics.
>Film
Eternal Sunshine of the Spotless Mind
>Documentary
Planet Earth
>Sandwich filling
Swiss cheese, but to be specific, I love turkey sandwiches.

Wheat bread
Turkey
Lettuce
Tomato
Swiss
Onion
Spicy mustard

Pickle on side.

>Equation
phd in
>Sect of Science
math
>Film
any job
>Documentary
i want
>Sandwich filling
300k starting

>>3711390
thx, I'll come back in a couple of hours and read it and respond properly.

>>3710482
>Equation
Don't have one
>Sect of Science
Mathematics (algebra)
>Film
The Blues Brothers
>Documentary
Don't have one
>Sandwich filling
Meats, don't make me choose... If you do make me - chicken for versatility.

> equation
<div class="math">\sqrt{2} = 1+\frac{1}{2+\frac{1}{2+\cdots}}</div>
> Sect of science
Phenomenology
> Film
True Romance
> Documentary
Cosmos
> Sandwich filling
mayo

>>3710970
What are you talking about?
Is it some joke I'm not getting?

>>3710970
tau=2*pi
Of COURSE we can calculate that.
e^(i*tau)=1

>Equation
Bernoulli's principle
>Sect of science
Pharmacology
>Film
I'm A Cyborg and It's Okay
>Documentary
Forks over Knives
>Sandwich filling
A black chick, my bro and I call it the reverse-oreo scenario

>Equation
F = M . a
>Sect of Science
Math and Chemistry
>Film
V for Vendetta and Fight Club
>Documentary
Thorugh The Wormhole with gordon freeman
>Sandwich filling
cheese and salami

>>3711770
>Thorugh The Wormhole with gordon freeman

>>3711882
whats wrong with it

>>3711882
gordon freeman
>gordon
>gordon freeman
>name is not gordon
>sposed to me morgan
ISHYGDDT


Also,

Favorite equation? The universe.
1=1

Deep shit, right

>Sect of science
Computer Science
>Film
A Beautiful Mind (seriously amazing), Good Will Hunting, Gladiator, LotR series, Watchmen
>Documentary
Zeitgeist: Moving Forward
>Sandwich filling
Boring shit. Mayonaise cheese and meat.

>>3711149
me again. I'd also like to have a fav equation. How do I acquire one...?

It's that thing from /tv/

>>3711882

Assuming Gordon suddenly begins to talk, I cannot even begin to imagine how awesome would that be

>Equation
e^ipi + 1 = 0
all you unpure fags be hatin'

>Sect of Science
Physics

>Film/Documentary
No idea

>Sandwich filling
ham+swiss cheese+tomato+lettuce

>>3711655
you mean "I'm a Cyborg, But That's OK"?
It's your favorite movie and you don't know the name?
I liked it, except the gory shooting part.

>Equation
<span class="math">
(a + b)^2 = \sum_{k = 0}^{n} {n \choose k} a^{n-k}b^k[/spoiler]

Navier Stokes equation or the Heat Equation

Engineer here, I'd have to go with classical mechanics for sheer applicability, though I don't really think of that as a 'science'

District 9

Riding Giants

Bacon

>>3711379
okay, I think I kinda understand it.