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Archived threads in /sci/ - Science & Math - 1957. page

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Anyone see any holes in this proof?

Question:
>25 points are chosen inside a regular hexagon of side length 10 furlongs.
>Prove that some number of them are at most 5 furlongs apart, and state the number.

cited proof: http://arxiv.org/abs/1009.4322
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>>7796510
>furlongs
P good bait op
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>>7796515

it was just a quirk of the question. I copied it verbatim.

obviously the units dont matter
>>
bump please

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What is the current understanding of how the lunar maria come to be (the dark patches on the Moon)? Why is it there and where did it come from? Bonus points: Why doesn't the far side have much maria?
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Is this a trole
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>>7796027
No, just curious how we understand the origin of the lunar maria. I mean, it's basically dried-up lava but there are no volcanoes on the Moon. So how did it get to the surface? It's a lunar mystery.
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>>7796233
So, no body here studies the Moon apparently. Interesting.

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Why do we have subjective conscious experience? And how does the brain create it?
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through quantum elevators
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>>7795144
You wouldn't ask that question if you weren't conscious, so that's a senseless question family
>>
Hard problem of consciousness can't be solved by science

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reminder that over 250 years ago a philosopher single-handedly BTFO of science for all time by proving that inductive reasoning is irrational
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So long cause and effect! BWAHAHAHAHA!

Fuck you billiard balls!
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>>7794507
what did he say?
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>>7794507
>reminder that over 250 years ago a philosopher single-handedly BTFO of science for all time by proving that inductive reasoning is irrational

Is that a bad thing? People here worship Popper and he was basically the last nail in inductivism's coffin.

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does bifurcation theory have any applications in explaining turbulence?

∂tv+v⋅∇v=−∇p+ν∇2v

x˙=f(x,λ), x∈Rn, λ∈R
2 posts and 1 images submitted.
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the reason i ask is because of this entry in Transitions to turbulence in Scholarpedia

>According to Landau, turbulence is reached at the end of an indefinite superposition of successive oscillatory bifurcations, each bringing its unknown phase into the dynamics of the system. In contrast, Ruelle and Takens mathematically showed that quasi-periodicity is not generic when nonlinearities are acting. They identified turbulence with the stochastic regime of deterministic chaos [3] characterized by long term unpredictability due to sensitivity to initial conditions and reached only after a finite and small number of bifurcations.

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Do we only value logic because it insists upon certainty? Do we only value certainty because it
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knowledge is a survival mechanism in a sapient being. we are not just able to answer questions, but form models for their environments which then allows us to predict solutions for multiple variables. such ability leads to stronger homes, more efficient production processes of foods, higher quality of living, faster approaches to locomotion, and so on. the end game however is two sides of one coin: the evasion of being shrouded by the unkown which we fear, and diminishing our livelihood.

logic is a proxy to all of these aspects. it gives us the frame from which conjectures grow into theories, and later into the future, applications. right now the millenium prize problems seem like not a big deal, but in the future, people will look at the navier stokes equations and think of how crucial they were to their understanding of chaotic systems. people will look at hodge cycles and realize how crystallography developed to understand multidimensional properties in special alltrope patterning. given logic, we stop being afraid of things, for we know how they function, we know how they operate. we stop being afraid of apex predators because we learned how to hunt, forming a logical scientific approach to mapping their growth, their breeding grounds, and so forth. little by little, one generation to the next, we refined ourselves to be less and less afraid.

think of all the stuff we look at with dejection today because of our understanding of science and math. the topography of the earth. arcs of lightning. the fire it ensued. fossils of dead animals that we never saw before. all of these instilled so much fear into our ancestors, because they had no logical foreground to work on. even quantum mechanics was like our proverbial fire. it was a new boundary of unknown models, of how different scales in our world rely on different rules for conservation and kinematics. it hurts you inside when you think the world should be consistent and simple.
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>>7797084
>we only value logic
>we only value certainty
What do you mean by "we", Peasant?
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>>7797102
Those aren't statements I made.

Hey /sci/ I need to find a interactive program that maps out the brain in a 3D model and shows the different parts and I can add notes to. Would really if anyone found a program like this.
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If only we could wish software into existence

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>people falling for the "he fell for the STEM meme" meme

Any decent math background knowledge can prepare you for Financial/Accountant/Act.Sci exams, coding is literally the study for autodidacts, and you can always tutor brain dead chumps that still can't into algebraic properties/science for easy cash.
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>>7796956
I tried to find the 20 yr video, where is it cunt?
Not this: https://www.youtube.com/watch?v=tlPfWxul5F4
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>>7796956
>OP falling for the "people falling for the "he fell for the STEM meme" meme"
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>>7796956
Its all about time management OP. The world doesn't care if you're capable of learning how to code or transition into other fields.

Life moves fast and only cares about who knows what in the present moment and how it will use them.
I know so many frat-boy finance students working at JP-Morgan, EY, MY, and GS. I mumble to myself "So easy, a math major can do it.". But thats not much of a consolation is it? Where is our high paying high pressure high stakes job? Our networking engagements 4-5 times a week? The businesses we've funded or companies we've started?

CS students have 3-4 years on us. Many of them have been into it since high-school. Some of them since middle school. "Yeah. But anyone can learn coding, just look at how others have done it. Literally shit tier xyz." Yeah but others spend hundreds of hours in the field while we're Mathing. So they've got that advantage on us.

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Since all boolean mathematics can be deduced to a long series of logic gates, is the most basic unit of time a logic gate producing an output?
3 posts and 1 images submitted.
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>>7796859
In the physical world logic gates must be developed using CMOS or TTL logic. Logically, yes that could be considered the time quanta if you were, say, analyzing a circuit, but in the physical world there are much smaller units of time passing while calculating the gate. Check out the Planck time if you are interested in the smallest physical time quanta (of any purpose)
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>>7796859
false
fixed that for you

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>what this guy is smokin'
>do want.
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>>7796833
nice file name
>>
Article: https://www.rt.com/usa/265029-kurzweil-google-hybrid-brain/?

I think it will be much sooner tbqh
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>>7796833

Just a bunch of typical jew bullshit from a typical jew. Move along and ignore it.

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Tomorrow i have a super big quiz about PEMDAS and i only understand what the word means, can somebody make an example of a big problem and resolve it with PEMDAS?
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>>7796803
I would post a big problem but it was already proven, by top mathematician Terence Tao, that it is impossible to compute your mom's weight.
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>>7796812
Oooohhhhhh snap!
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>>7796803
is this just semantics or is there an overarching mathematical reason why this is the order we do things?

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Hello /sci/

I have to give a speech in school about a topic of my choosing. I chose the topic of nuclear power, and why we should use it over other alternative energy sources (e.g, solar, wind). I have to present my speech, then defend my argument for 8 minutes. Any good, credible sources out there? Also, tips for how to defend my argument would be greatly appreciated. General nuclear thread as well I guess.
10 posts and 2 images submitted.
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Cheap by an order of magnitude(or more)
Safer
Lasts for more than a decade or two, unlike wind/solar

You might point out that the best place to put wind turbines are on coast areas, aka the exact place rich faggots wouldn't want that eye sore.
Much smaller land use

If anyone brings up green "creating" more jobs, inform them that they are grossly economically illiterate and that they should try reading a book once in their life.
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>>7796715
>This is what we do, people
>Fill Africa with nuclear plants to 'help their economy and society'.
>I mean like, fucking cover every single city with a nuclear plant. Spend billions in that shit
>Declare war to Germany
>Send a nuclear bomb their way
>The guy piloting the plane carrying the bomb must be a sandnigger and a spic co pilot.
>Have remote control of the plane so that as the sandnigger passes by Africa, the bomb is thrown immediately down
>Chain reaction of nuclear explosions completely obliterate nigger land
>Send plane back and kill sandnigger and spic but pretend you jailed them.
>Use this to push a narrative that muslims and hispanics are racists towards black people
>Everyone believe us as the emotions of pain and suffering for the death of an entire continent dominates their monkey brains
>Blacks and hispanics start murdering muslims in a rampage
>Muslims get wiped out of the world
>Send all blacks and hispanics to prison for muder
>With the excuse of not enough room in prison, execute all the niggers and spics.

That is how we fix all of the worlds problems, using nuclear power. Truly a god given tool for the advancement of humanity.
>>
Explain the difference between BWRs and PWRs,

Explain how the russian reactors and japan reactors were flawed

You will probably have to appeal to emotion because all humans have a hard time thinking logically when emotions are involved

The NRC probably has a lot of info on their website, they are the bigwigs in the US nuclear industry. If a site pisses off the NRC or does something against what the NRC wants, you can kiss your plant bye bye .

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hey /sci/ -- my friend's kid (11th grade) is doing a science fair project on various prime finding algorithms -- are any of you aware of "patterns" in the distribution of primes? the kid tells me that there are but i think it might be bullshit.

>pic unrelated
also if you have anything that you think the kid should know to better his project please tell - i'd like to be able to help him
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There are some fascinating patterns in the distribution of primes, but I'm not doing your homework for you.
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>>7796662
yeah i'm well aware of the patterns -- could you give examples of some?
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>>7796649
>the kid tells me that there are but i think it might be bullshit.
>yeah i'm well aware of the patterns

Make up your mind...

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Just untestable mathematical theories
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>>7796641

>Quantum Gravity & String theory aren't science

Yeah pretty much.

>Just untestable mathematical theories

Not fundamentally, just with our current technology.


Also... Kill yourself you useless pos frogposter.
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>>7796654
What testable theories are within realm in your opinion?
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>>7796674
I think String Theory will probably testable in the next ~15-20 years. This will probably be through some application of the Ads/CFT.

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Griffiths says that when the potential becomes infinite, the boundary condition there that requires the wave function to be first-order continuously differentiable no longer applies (e.g. in the figure I posted, it's clearly no longer differentiable at the boundaries). But doesn't the SE require that psi be a C^2 function? Why are we allowed to just throw away this property?

My only guess is that, since infinite potentials aren't realistic, and used just to demonstrate some basic techniques, we do some massive handwaving. But what about a rigorous treatment (e.g. dirac delta potential)? Is there a way to make a properly C^2 wave function in an infinite potential well?
6 posts and 1 images submitted.
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>>7796624
the truth is you don't need a C2 function.
You just need a function in a sobolev space.

I never thought about this before, but now I see that most physics profs don't give two fucks.
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>>7796696
Physics are almost as bad as engineers
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>>7796720
Too bad I'm an engineer then.

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