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Archived threads in /sci/ - Science & Math - 94. page

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Does anyone else ever think that people in academia are too uptight about authorship and credit?

What matters is that moot and EY are equally cucked, if not one more cucked than the other
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>>9139479
Write your own papers and when someone steals something you worked hard on and took for granted come back and tell me you don't care.
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Let me just submit your PhD thesis when your half complete and claim it's mine! :D
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Who is EY?

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How can there be schemes and axioms that count beyond infinity?

Isn't saying that the inaccessible cardinal > infinity a contradiction because infinity is infinity?
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>>9139462
∞+i
>>
Cantor's diagonal proof tells us that not all infinities are equal and that some are bigger than others, this is not contradictory.
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>>9139462
>How can there be schemes and axioms that count beyond infinity?
They aren't counting, so there aren't.

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Obviously if you see stuff like multiples of 180, you should use degrees.

Multiples of pi, you should use radians.

What if neither is given?

Let's say the length of a circular arc is 1, with a radius of 2. What's the value of the angle?

Is it half a degree, or half a radian?
11 posts and 2 images submitted.
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>>9139422
It's both. It either is or it isn't.
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bump pls
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>>9139422
Depends on context, but radians is standard in mathematics.

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Can someone help me with this? Lets say you have 2 numbers, i.e 1 and 4, then you proceed to subtract the smaller number from the bigger one and double the smaller numbers.

So 1,4 -> 2,3 -> 4,1 -> 3,2 -> 1,4

And this becomes an infinite loop. Is there any pattern to telling when they become an infinite loop or when they end.

Thank you for any help!
8 posts and 1 images submitted.
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>>9139386
Here's a trivial pattern:
given two pared whole positive integers x and y
if x + y = a power of 2
then your procedure it will end at (0, a power of 2 )
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Sum is invariant and finite
Process is markov (each term in the sequence depends only on the term immediately before it)
By pigeonhole principle the sequence will always loop in at most min(x,y) steps where x,y are your starting numbers.
Also if x,y -> z,v then y,x -> v,z
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Algebra problem, How the hell do i solve this

Fiora starts riding her bike at 24 mi/h. After a while, she slows down to 15 mi/h, and maintains that speed for the rest of the trip. The whole trip of 60.75 mi takes her 3 h. For what distance did she travel at 24 mi/h?

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What do you think about this guy and what he said? Is it wrong to take him seriously? Why?
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>>9139371
>What do you think about this guy and what he said?
A fraud and most of his "theories" don't stand up to scrutiny since he was too much of a brainlet to use the scientific method.
>>
BRICK IN YO FACE!
NOW WHATCHA GONNA DO WIDDIT!

...He liked blow.
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>>9139371
>Is it wrong to take him seriously?
On many subjects, very.

>Why?
Most of his methods are downright subjective and simply not very scientific at all. There are better mind models nowadays.

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Why, in a conservative field, does the force equal the negative gradient of the potential?

[math]F=- \nabla V[/math]


I know this relationship is true, but WHY is it that way?
4 posts and 1 images submitted.
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It's the fucking definition.
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>>9139382
It is?
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>>9139365
its just from how V and momentum is defined, you could redefine the fields in such a way that there is no minus, but then some other equations will get a negative in it.

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is there a way to self-study medicine? some introduction to medicine books or syllabus? if i spend 30 min a day can I learn at least the theory part in 10 years?
6 posts and 1 images submitted.
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>>9139334
Considering that med school students study 2-3 hours per day for 4 years, probably not.
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you answered your own question op. you can start by looking up the curriculum for different med programs, and pirate the textbooks. i feel in a helpful mood so try Library Genesis, it's still the best source for text piracy but beware that some of the links might be fishy. the other things you can do are: get a library account, rent e-books and strip DRM, or purchase digital textbooks from amazon, strip the DRM and return immediately for a refund. some material might be available from MOOCS but less so the further up you go - you might have a hard time finding a bazillion white papers without JSTOR or whatever.
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>>9139334
>is there a way to self-study medicine?
yeah, read the shitty books

>if i spend 30 min a day can I learn at least the theory part in 10 years?
no

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What's going on in orbit? Recently two geostationary satellites have experienced "energetic" events causing a loss of both satellites. Both are old, but AMC-9 still had a year of design life left (Telkom-1 was 3 years past it's design life). You can see videos of them coming apart:

AMC-9
https://www.youtube.com/watch?v=8ebIAUjFfZM

Telkom-1
https://www.youtube.com/watch?v=4FXX1kSNljU

So far nobody knows what's happening. Any ideas? inb4 ayys
3 posts and 1 images submitted.
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Keep in mind that this isn't low Earth orbit where high velocity space debris is flying around. Things are alot more stable in geostationary orbit.
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>>9139329
The first one drifts apart so slowly, looks like a fairly low energy event to me.

>Once is happenstance, twice is coincidence, three times is enemy action.

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It is speculated that Pi may be an 'infinite' number because the sequence of digits following its decimal point is of seemingly unlimited (or at least indeterminate) length

Using the same logic one may perhaps also argue that any cardinal number is also infinite, in the sense that it may be expressed in the same decimal form. E.g. "7.000.... etc"

This seems silly and counter-intuitive though because the extra digits are adding no new information.

But then, assuming pi at some point (after trillions of digits for example) began to loop back and repeat the same sequence of digits as naseum, does that also mean Pi is not infinite?
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>>9139275
>assuming pi at some point (after trillions of digits for example) began to loop back and repeat the same sequence of digits as naseum
Then it would be rational, but it's not.
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>>9139275
>durrrrrrrrr

https://en.wikipedia.org/wiki/Proof_that_%CF%80_is_irrational
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Is pi embedded in the digits of pi?

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Hey all, not sure if this is pertinent to /sci/'s mission, but there is a GoFundMe that was started to analyze a large number of Utahraptor bones that are trapped in sandstone. Turns out not much is known about the popular dinosaur, only way to find out more is to get the bones out. Still is accepting money, consider donating to improve Utahraptor science and letting your friends/other boards know.

The NYTimes story on it: https://www.nytimes.com/2017/08/28/science/utah-paleontologists-turn-to-crowdfunding-for-raptor-project.html
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>>9139197
OP here, the website thinks the GoFundMe link is spam lol, here is an official website about it: http://utahraptors.utahpaleo.org/
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>>9139198
If they took Paypal, I'd have just donated.

Unless I forget , I'll do something later when I have my wallet.
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>>9139381
OP here, good stuff, make sure to share with others! (side note: not affiliated with this in any way, no financial ties, just really like utahraptors!)

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Recently read this book. Is it reliable? I did some background checking on it and can't really get a clear answer. Naturally, it was controversial upon release yet it seems a lot of the criticism was unfounded and the hate Bjorn got was sorta unfair. Scientific American claimed it wasn't peer-reviewed even though it was, and refused Bjorn when he tried to publish a point-by-point rebuttal to their criticisms (they eventually allowed him a fucking one page short response). So from what I gather this is just an example of media interest over actual science. I mean, the book has all sorts of references and was peer-reviewed. Is there actually something wrong with it or was the media just being shit as usual?
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>"climate change"
Fiction belongs on >>>/lit/
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>>9139180
TO BE FAIR...it's not JUST about climate change. That's only like 1 chapter.
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shameless self bump

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What is the science behind Holy Spirit Falling? This is a thing that modern preachers / cultists do. I think it has to do something with trance / determination and the crowd behaviour, which releases certain chemicals in the brain that cause great joy and makes you faint.

https://www.youtube.com/watch?v=EvG8i5HNGjQ

https://www.youtube.com/watch?v=apFjbtpxauQ
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>>9139164
placebo + heat exhaustion + LARPing.

im not even joking
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>>9139168
>LARPing
this mostly

people will retardedly do just about anything to fit in with the crowd.

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>writing the product rule
[eqn]\left(f g\right)^\prime = f^\prime g + g^\prime f[/eqn]
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Why do we teach the quotient rule when the product rule exists?
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>>9139181
It's good for students to see how all the rules are consistent with each other - the quotient rule can be proved directly, without relying on the product and chain rules (though, arguably, teaching product -> chain -> quotient-as-a-bonus is probably a better progression. The chain rule is very important, and should be covered earlier than it often is in a calc class). I do think that the quotient rule should probably be treated as a "bonus" of sorts, not a fundamental rule - but it shouldn't be skipped altogether.

Also, the quotient rule often (but not always) brings expressions closer to simplification.

What always gets me, though, is when people use the quotient rule to differentiate something like [math]\frac{2}{x + 1}[/math].

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why doesnt computer science correct law books?

law is riddled with inconsistencies, errors, ambiguity, reliance on judges, etc

use computer science to fix law
easy
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Because law isn't and can't be a hard science. It has to be internally consistent but it's otherwise predicated by ethics. Sometimes ambiguity is a feature and removing it to favor one interpretation over another is little more than moral judgment. This is a question for the philosophers, not computer scientists.
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>>9139088
fpbp
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>>9139088
you's still gettin a robot lawyer in ten years jaykwan

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riddle thread for us brainlets

Here's your first riddle:
I have a 1 dollar bill, a 10 dollar bill, and a 100 dollar bill. I have to give you one of the bills if you tell a truth. I will give you nothing if you tell a non-truth. You are allowed a single statement to get the most money possible.
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OP is a faggot, enjoys dicks in his ass, and is a pro at sucking cock.

Thank you for the $111
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>>9139047
Truer words have never been spoken
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This sentence is false.

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