Archived threads in /sci/ - Science & Math - 1688. page

>>8063683
>Harvard Math 55
>Through 2006,[6] the instructor had broad latitude in choosing the content of the course, and the course bore the title "Honors Advanced Calculus and Linear Algebra". For example, in 1970 by the second semester, students were learning about the differential geometry of Banach manifolds.[4] In 1994, students of Math 25 learned differential geometry using Manfredo do Carmo's book[7] and calculus of variations using C.H. Edwards' book.[8]

>LOL lets teach graduate material to undergrads so that people think our classes are super hard xDDD

>>8063703
Did you check the link in OP? They consider a course in Topology II: Introduction to Homology and Cohomology Theory an intermediate course.

>>8063703
>For example, in 1970 by the second semester, students were learning about the differential geometry of Banach manifolds.[4] In 1994, students of Math 25 learned differential geometry using Manfredo do Carmo's book[7] and calculus of variations using C.H. Edwards' book.
so, just like every student in france?

I laugh every time someone tries to brag about their american programs

>>8063573
OP, what exactly is supposed to be the mechanic here? the closer you get the slower time flows? A field where time flows uniformly but slower than outside?

>>8063847
>the closer you get the slower time flows

also outside the fields can be considered a constant timeflow zone

>>8063894
linear, polynomial, exponential or logarithmic decrease?

reproduction would then be via Borda count.

>>8063557

Why couldn't it be independent and reproduce with itself

>>8063557
Fuck off tumblr, your incoherent drivel annoys us.

why not just try it? I'm sure a big enough arc will do 'er though

>>8063592
How would I make an electric current? Also I don't own any gasoline

>>8063594
Get two batteries, an electric wire, an electric tape, and a cigarette lighter.

1) Tape one batterys (+) side to the cables one end and put it on the floor
2) pull the wire like a straight line and tape the other end to far away
3) Remove the lighter top or break it to pour out the lighter fluid in a small jar
4) Put the center of the wire in the gasoline jar
5) Contact the other batterys ( - ) side to the free end of the cable

If I eat it raw, undercooked, over seasoned, old or rotten, etc., yes, but other than that, no. If I eat perfectly fine meat too much, forcing myself to eat, I suppose I too would become sick then.

>>8063469

I'm sure meat has an LD50 value like everything fucking else does. No idea what it is though.

A lifelong surfeit of proteins (meatbased or not) can give you gout. Don't ask how I know.

>>8063469
The symptoms include diarrhea, headache, fatigue, low blood pressure and heart rate, and a vague discomfort and unstoppable hunger even after eating large amounts of meat. If fat or carbohydrates are given in time, the symptoms will resolve themselves over 2-3 days.

http://www.ketogenic-diet-resource.com/rabbit-starvation.html

>>8063128
Read Baby Rudin -> Munkres' Analysis on Manifolds -> Stein's 4 Princeton Lectures in Analysis (Fourier Analysis; Complex Analysis; Real Analysis: Measure Theory, Integration, and Hilbert Spaces; and Functional Analysis)

>>8063140
Will do. I have heard that Rudin's lower level book may be a good place to start. How about for PDEs? Or should I focus exclusively on analysis first? I really appreciate the advice, man.

>>8063128
OP I want to get into applied math at cal poly. how do I hone my skillz outside of self-study?

>>8063045
By killing yourself

>>8063068
rude.

Be a tree.

>>8063019
>How do we know that they have no size?

Who said that they have no size?

When physicists/mathematicians see that their model predicts something such as an infinite energy density they
>well, this model is obviously incomplete, or potentially just wrong
but if said model seems to work for most circumstances, they will continue to use it for what it works for, and work on how to reconcile their abnormal results.

And then pop-sci mags and social media get their hands on these theories and as you know, good headlines trump everything else. Hence hurr-durr singularities hurr-durr

No respected physicists really believe anymore that things can be compressed to a 0-dimensional point, even if those models are useful for when things aren't compressed to that size.

>>8063033
So what do physicists actually think about them then?
Could they have sizes that get infinitely close to zero (but never reach?) Or maybe a singularity's size is determined by its mass, wherein the more mass it has, the smaller it is?

>>8063062
don't listen to him he's a massive retard who doesn't understand how mathematical and physical singularities fork off with respect to general relativity.

File: 11378086_896539740438713_1110488615_n.jpg (21KB, 320x320px) Image search: [Google]

21KB, 320x320px

>>8062964
>he fell for the socialization meme

>>8062964
You don't. I've been suffering from depersonalization and derealization for 14years. I literally feel like my brain and consciousness is disconnected from my body, it's like the front half of my head is empty and i'm viewing life from the back of my skull. It's miserable and sometimes I want to an hero.

I will only say that it's possible, and you might not like where it leads.

Invest time into building awareness, and then cognitive structures to manipulate low level features of your mind. Subdivide and model it however it makes sense to you, plot out what avenues you can use. Build the systems, and then do the low level architectural work required. Pull he cover off the black box of the mind as much as possible.

You're headed on a course for misery.

File: serveimage.jpg (9KB, 202x300px) Image search: [Google]

9KB, 202x300px

>>8062887
you and I will never know,
which is kinda sad, really

pic somewhat related

File: Blastulation.png (116KB, 801x486px) Image search: [Google]

116KB, 801x486px

>>8062887
How did you feel prior to being born, or even how did you feel as a blastula?

>>8062899
i don't know. i can't remember such things, so i can't tell if i felt anything at the time.

>>8062870
I would guess because that's how much the distance is betwixt stars. Thousands of years of traveling that fast wouldn't produce a discernible difference.

>>8062877
This
And everything else is spining along with us aswell. The stars aren't static

>>8062870
The exact, absolutely scientific reason is
"SPACE IS FUCKING HUGE"
Like, beyond our comprehension huge. People just don't have the scope for that. They see space like it's portrayed in Sci-fi; imaginably large, but not constricting; big enough for epic battles. In reality, the stars are so far away that even at superluminal speed we would almost certainly never reach them within a year

A person's pay is dictated by labor supply. Generally a company will pay their employees the minimum amount possible where they'll be able to maintain an employee who can do the job.

It just so happens that the amount required to keep an unskilled laborer is higher in a wealthy nation like America compared to a poor nation.

If you want to whine about somebody being paid too much, you should be more concerned about the CEOs and chairmen who basically just sit in an office all day and make more money in 10 minutes than you will make in your entire life

>>8062865
>10 min
> entire life
Thats a bit of an exaggeration
Ppl earn more than 1000 dollars in their lives. At least in america

>>8062847
The ugly truth demonstrated by the 2008 financial implosion in the 2008 is that the value generated by work was much less than expected and in many cases less then the salaries.

In the dive to the bottom with Indian level salaries you should prepare for national neo poverty.

>>8062748
>how do I get it?
>he wasn't born with mathematical intuition

you don't, you wait for your reincarnation.

Autism, and get more vaccines.

I don't know whether gorillaposters are sincere or not, but I'll give you the benefit of the doubt.

A sincere answer is that you are either born with it, like the fortunate few, or you work hard & practice a lot. For #2 to work you clearly have to enjoy mathematics so that you can actually spend a substantial amount of your time/life to playing/practicing/experimenting with mathematics.

>>8062729

Some biology/health science research has the distinct disadvantage of taking a long time (incubation times, etc). We've all heard horror stories of some poor PhD having a decade-long project due to failures & shitty grow times.

However, my 2c are for anything relating to human behaviour. The signal to noise ratio is absolutely astronomical, and frankly, I'm surprised we get the number of articles published that we do. See PNAS, complete joke of a journal publishing garbage like

>(barely) not statistically significant (p=0.052)
>a barely detectable statistically significant difference (p=0.073)
>a borderline significant trend (p=0.09)
>a certain trend toward significance (p=0.08)
>a clear tendency to significance (p=0.052)
>a clear trend (p<0.09)
>a clear, strong trend (p=0.09)
>a considerable trend toward significance (p=0.069)
>a decreasing trend (p=0.09)
>a definite trend (p=0.08)
>a distinct trend toward significance (p=0.07)
>a favorable trend (p=0.09)
>a favourable statistical trend (p=0.09)
>a little significant (p<0.1)
>a margin at the edge of significance (p=0.0608)
>a marginal trend (p=0.09)
>a marginal trend toward significance (p=0.052)
>a marked trend (p=0.07)
>a mild trend (p<0.09)
>a moderate trend toward significance (p=0.068)
>a near-significant trend (p=0.07)
>a negative trend (p=0.09)
>a nonsignificant trend (p<0.1)
>a nonsignificant trend toward significance (p=0.1)
>a notable trend (p<0.1)
>a numerical increasing trend (p=0.09)
>a numerical trend (p=0.09)
>a positive trend (p=0.09)
>a possible trend (p=0.09)
>a possible trend toward significance (p=0.052)
>a pronounced trend (p=0.09)
>a reliable trend (p=0.058)
>a robust trend toward significance (p=0.0503)
>a significant trend (p=0.09)

However, I'm sure this same garbage language is used in biology. I'm just less familiar with biology than behavioural/cognitive experiments.

Frankly, I'm not sure what can be done to improve the signal to noise ratio given the current system

>>8062729
>>8062768

see
https://mchankins.wordpress.com/2013/04/21/still-not-significant-2/

for more of the trashcan language

tl;dr:
> troglodyte excuses for researchers try to convince themselves that they hadn't wasted 6 months of their life on a meme project

>>8062729
I dunno...anyone looking at the impacts of neutrino fluxes on certain long-half life decays are pretty fucked.

There are a bunch of Springer books with "Stochastic Processes" in the titles,
however, looking e.g. at quant sites on the web it's soon clear that all the fine machinery developed in math departments is not what's used and what is implemented is are "common sense" (for a broad reading of that term) math. I say in case you think "that's something where I can do interesting math and still get $$$". The practical side of this field isn't very mathy, I think. Not as mathy as you may thing.

>>8063822
Not him.

I have read a lot about the quant job and what i have concluded so far is that people with VERY STRONG computational background and advanced knowledge in diff. eq. probs/stats if not just don't even try.

>>8063906
I can't parse your sentence

You have concluded that people (with VERY STRONG computational background and advanced knowledge in differential equation) do what?