Archived threads in /sci/ - Science & Math - 371. page
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Is probability real?
probably
probability is real because every system has an input and output, and given choices and the variables which dictate the combination of states which that system can take, there is a distribution in which you can say what the "probability" of an event occurring is.
if i flip a coin ten times, how many combinations are there?
given how many combinations are there, what is the probability that each one will happen, and why?
each of those aspects are real. it's not just hand-waiving chaos or in-determinism, because that's not what it is trying to tackle. you can have a system where it's fully random, like a roulette table, and still deal with probability.
>>7839209
maybe
Why russia owns the competitive programming and hacking scene?
(Also the east european nations)
[pic related]
Because Russians are good at math/stem stuffs. Remember first nuclear plant? First person to space?
proofs?
Latex practice thread
[latex]\frac{1}{2}[\latex]
Latex practice thread
[math]\frac{1}{2}[\math]
[eqn] \iint_D f(x,y) \mathrm{d} x \mathrm{d} y [/eqn]
gaddamit
[math] \frac{1}{2} [math]
When does math stop being plug and chug?
when you start studying combinatorics
The moment you have to think about what formula to use, or possibly derive your own
>>7838995
>The moment you have to think about what formula to use
That's still plug and chug
How do you know the scientific method gives valid results?
Especially those of you who think philosophy is a poopoo field.
>>7838877
>it's another U CANNUT KNOW NUFFIN thread
>>7838887
>thinks "u can't know nuffin" is what philosophers think
>>7838877
>Science finds truths popsci meme
stop watching black science man
hey /sci/, what program would help me take enough physics/chemistry/math courses to do research on these techs while still using those credits accordingly for the degree itself instead of just squandering electives:
high temperature superconductors
Josephson junctions
multijunction photovoltaics
magnetic refrigeration
electroactive polymes
ultracapacitors
chemical vapor deposition
Selective laser sintering
machine learning
electron beam welding
Hall-effect thruster
Spherical Tokamaks
scramjets
nitroamines
rotaxanes
my...
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>>7838807
Chemistry with a focus in physical chemistry. That alone will get you up to modern physics, linear algebra, and you'll take all the chem you need.
>>7838812
what about other math like functional analysis? would it pop up in research of a superconductor
>>7838822
Honestly I couldn't tell you, but I assume you wouldn't need functional analysis for superconductivity. I had only up to vector/multivariate calculus for my undergraduate major. Anytime a subject, like biochem physics, needed mathematics I hadn't taken yet or practiced, the applications were uniform enough that they were easily learned and understood in context.
hello /sci/
the longest word composed by 'a' and 'b' with no pattern repeated twice in a row has length 3, for instance "aba"
it is pretty clear it cant get any longer
what would be the maximum length with no pattern repeated three times in a row? is it even finite?
it can get pretty long, for instance
aabbaabbaabaabbaabbaabaabbaabbabaabbaabbaabaabbaabbaabaabbaabbabaabbaabbaab...
however, for instance, aabababb is not permitted, since 'ab' is repeated three times in a row
>>7838787
your example has the string "aabbaabbaab" repeat continuously.
what is the minimum number of characters required to be a pattern?
a more technical formulation of my question would be "is the quotient of the free group [math]F_2[/math] by [math]\forall x~x^3=e[/math] finite?"
>>7838797
look again at my example
also, the "..." do not imoly that the pattern is repeating, it means that i could go much further but it gets boring
any repeated sequence of characters is a pattern
I'm starting my PhD on machine learning starting next spring.
I'm worrying right now because my math is pretty much shit thanks to my shitty undergrad CS courses. (No rigour maths, the hardest is probably Discrete math, my school didn't even offer Analysis, only Cal 1 2 3. Yes, the school is shit, don't ask its name).
I can read empirical ML papers fine, even if the consists some basic Calculus level equations. But when it comes to difficult models/learning processes which requires a lot of math maturity, I'm fucked.
So I have to learn Analysis,...
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>>7838744
Linear Algebra (Dover Books on Mathematics) by Georgi E. Shilov
Elementary Real and Complex Analysis (Dover Books on Mathematics) by Georgi E. Shilov
Elementary Functional Analysis (Dover Books on Mathematics) by Georgi E. Shilov
Advanced Calculus of Several Variables (Dover Books on Mathematics) by C. H. Edwards Jr
Tensors, Differential Forms, and Variational Principles (Dover Books on Mathematics) by David Lovelock, Hanno Rund
>>7838744
I'll be honest with you: unless you are a genius, there's no way that, without mathematical training, you will understand in 2 months analysis and differential geometry without sounding like a dumbass when someone asks a question.
Not only becuause they're somewhat difficult subjects (not that much) but also because they build on other fields (algebra, topology).
So just try to find how to solve this problem without relying on learning this in 2 months.
And, by the way, for geometry...
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>>7838744
>I'm worrying right now because my math is pretty much shit thanks to my shitty undergrad CS courses. (No rigour maths, the hardest is probably Discrete math, my school didn't even offer Analysis, only Cal 1 2 3. Yes, the school is shit, don't ask its name).
Holy shit, which program give you an offer?.... I applied this year to several programs in the same area and they are very selective with the people they choose?
How can you tell if you or someone else you know might have an IQ in the range of 200+ without resorting to official testing?
Say, for example, you're someone who has scored the top grades across the board in your country's public exams with very little effort (less than two hours revision, five days a week, for three months prior to the exams themselves)? This might indicate a high level of intelligence, but what if you have a personal distaste for mathematics? Let's say it doesn't excite you and you never took it beyond high-school. Most people with...
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>>7838666
"Welcome to iQ testing, where everything's made up and the points don't matter."
>>7838715
what?
>>7838715
kek
>>7838666
There's almost no correlation between grades and IQ. One of the few things IQ predicts is social deficits at high IQ's, 150+ I believe is when it becomes strongly correlated. Math is a solitary, cerebral, logical pursuit. It makes sense that someone with a very high IQ might be drawn to study maths. Also 200+ is unheard of as far as I know. Don't get hung up on IQ. It's not a bad assessment of some basic intellectual capabilities,...
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Well, /sci/?
>>7838630
1=/= sqrt 1
Dumbass
>>7838630
1=/= sqrt 1
Dumbass
>>7838630
1=/= sqrt 1
Dumbass
What does /sci/ think about electrical engineers?
>>7838582
Respectable degree, not a meme. Core job market is a bit oversaturated at the moment.
>>7838582
less intelligent version of computer engineers
>>7838582
bretty gud
Anyone else a complete retard when learning new things, even trivial things, for the first time? Once I have actually learned it and understood it, I can apply it to new problems easily. I also improve very quickly.
I can recall being stumped for 20 whole minutes by algebraic manipulation of number sequences when I was first learning it.
Am I retarded?
N-n-no bully
You are not alone anon.
>>7838526
Are you sure you're learning correctly? If you have difficulty with that shit, get a more explanatory textbook. Some textbooks expect you to understand straight away, but some go into more detail about exactly how, and why to do it.
Though, to be honest, with math some things just aren't understood straight away until you apply them again and again.
I can relate. First-time comprehension is absolute garbage. I can't follow a lecture.
But once I get home and do some experimenting and further reading I master it and never forget.
Do you happen to be clumsy, bad at competitive videogames and generally sub-par at tasks which require you to think "In the moment"?
why don't chimps just get a hold of knives?
>>7838393
Moonwatcher did. His competition did not.
We are the children of Moonwatcher. And your picture shows the children of his ancient competition.
:^)
(IB4 someone demonstrates tool-usage by chimps)
>>7838393
Because they'd be unstoppable.
I know they're big fans of sticks, but I don't mean this to be silly as it sounds. I saw a documentary on chimps tribal warfare and the fuckers used flanking and ambush tactics. It surprises me they aren't at least bashing each other with big sticks or rocks.
>tfw two inventions under my belt
Get on my level nigs.
>>7838381
Who did you steal them from?
>>7838389
If by steal you mean inspiration then Felix Wankel and Gerolamo Cardano.
Yeah, well, know what I have under my belt? A 12 inch dick. Your wife is riding it every night while you're begging somebody to buy your patents ;)
Hey /sci/ I need some help
I haven't really studied math for around 9 years and I'm a littly rusty
I need to learn math from scratch until basic calculus in around 10 months
Can it be done?
I can invest around 5-6 hours a day
>>7838250
Khanacademy.org
>>7838250
Damn me too
>>7838250
it can be done in a week.
