How do I learn what this shit means?
>>8012206
Stop lurking on 4chan and try to learn the math behind ?
>>8012216
Stop being a dick.
OP, dont listen to him. What you need to do is lurk 4chan 24/7 until you achieve mathematical nirvana.
>>8012206
take any stats class.
I am driven mad by a lever problem. I am designing a crane in my spare time and have performed the calculations for the hydraulic actuator that manipulates the angle of the arm. I am however uncertain if my reasoning is correct - I have to apply the force to a different point on the axis, to which the actuator is fixed.
My calculations are in the image. L is the length of an extended arm, while l (small L) is the distance from the fixed end of the arm to the point where the actuator connects to it.
>>8012196
I think you should investigate rotational effects- for example, torque, before applying N2L in x and y to get the amount of force that must act perpendicularly to the arm; that makes finding your F_b for any angle beta pretty trivial. Once you know that, just solve for the forces in the x directions and you're good.
>>8012213
Oh wait, just saw the second calculation.
No, that's fucked.
F_a is
[math]
|\vec{Q}|sin(\alpha)
[/math]
and F_b is
[math]
|\vec{Q}|cos(\alpha)
[/math]
And then you can apply the "law of the lever" (really just newton's second law for rotational motion applied to a static system), but that only can tell you how much force is acting perpendicularly to the lever arm.Those vectors that you have at the end do not sum to Q
>>8012213
I have broken down the load Q into two forces acting along the hydraulic actuators - it is the only means of moving the crane arm, so the forces have to be calculated along those axes.
After having calculated Fa and Fb, I already have the force that acts along the arm. However, I still need to reapply the force Fb so that it aligns with the second hydraulic actuator.
I was under the impression that it boils down to equating the moment Fb*L*sin(specific_angle) and Fb' * l * sin(specific_angle). As the angles are the same, it would reduce to standard lever advantage.
Is there anything wrong with the approach?
https://www.youtube.com/watch?v=rRmv4uD2RQ4
Well, /sci/? How accurate was Dudeweed's description of quantum computing?
Sounds to me like he's describing analog computing. Is analog data storage part of quantum computing? I would've thought the opposite; that at the quantum level everything would be... well, quantized.
>>8012084
It's more or less right -- it's obvious that someone explained to him since one of the reasons he was there was because of it, but his ability to succinctly turn the information he was given and impart it to someone else shows a lot of things about his competence as a politician.
Not like it matters though since his other skills seem to be burning millions on other things while in charge.
>>8012088
This tbqh
>>8012084
>>8012088
Of course he was given the information, and though his delivery was very eloquent I think it was pretty clear he had no idea what he was talking about. The bit where he invoked the wave particle duality really sold it for me.
Don't be an idiot. At best he's a better version of the same ol' politician. And in all likelihood it's not even that.
.
Why is /sci/ appropriating /g/ memes?
>>8011963
Sure! Just come and sit on my lap. By the way, I forgot my pants, I hope you won't mind.
>>8011963
OP confirmed virgin
https://www.youtube.com/watch?v=KuG_CeEZV6w
Link with time stamp: https://youtu.be/KuG_CeEZV6w?t=2m4s
>pic not related
>>8011960
neat
it doesnt explode...
>>8011960
Calcium carbonate failure rather than cellulose fibres - similar to cement failure. Calcium carbonate is added to paper for its color.
What to do on April 25 when Mars, Saturn and the Moon will draw a triangle?
>>8011942
Fucking kill yourself for implying this means anything
>>8011949
/thread
>>8011942
point a telescope at it?
Is he the Newton of our times?
Why bother trying to do anything related ot hard science when this guy could do your life's work in two months?
>>8011951
>two months
>implying our lord wolfram wouldn't jot it down on a napkin during his lunch break
>>8011964
>taking his lunch break
>implying his shit skid marks don't spell new fundamental equations
Can you actually do anything useful with cellular automata?
know don't I
Can you repeat the question?
Is a function [math] f [/math] uniformly continuous at any interval that is a single point? So if the interval is [1,1], would the function be uniformly continuous? Or would it actually depend on what the function is?
>>8011817
what is your definition of uniformly continuous? if you're using the same one as wikipedia at least, then uniform continuity is a global condition and it doesn't even make sense to check it at a point.
>>8011817
Are you high? Look at the definition again,look at your post,contemplate suicide,do it.
A point is an interval though
I've thought a lot about how to designed scripting and programming languages and I always run into the same problem: Control flow.
No matter how I look at it, in order to write programs, every programming language needs some way for the programmer to change the "shape" (execution path) of the algorithm. This is how the programmer imbues a program with logic to separate it from an empty state graph.
My problem is that I only know this intuitively; I have no idea how to prove it. If it's true I ought to be able to prove it, right? So how do I go about doing that? When I contemplate making a language without if/then/switch gateways am I basically asking how to do logic without logic?
>>8011762
That's the first time I've seen that image, and I actually laughed. Nice.
And yes, you do need conditionals. Without *some* way of the output depending on the input, your algorithm would produce the same result every time; even with slightly looser definitions, it wouldn't even be able to represent general functions (since no piecewise defined functions.)
To actually reach the full category of algorithms, you need both conditionals and some form of recursion/loops.
>>8011857
So it's all by definition then? The logic of the algorithm is defined as the jumps?
>>8011857
this.
if i remember correctly, look up "structured program theorem". you need some minimum of properties to be able to program.
as to prove this, ask some gauss here on board.
So if CS undergrads are pretty much code monkeys, what's graduate school like for CS? Like, what general areas does the research focus on and how rigorous is it? Are CS grad students actually innovative and talented?
I literally knew nothing about programming until a few weeks ago when I started taking this beginner course as an elective and it turns out I'm actually good at it and enjoy it greatly. I'm thinking aboit majoring in CS but I don't want to be a code monkey.
>>8011711
>I'm thinking aboit majoring in CS but I don't want to be a code monkey.
You literally cannot do anything else with a CS degree other than code.
Not even manage teams of programmers because the only degree that actually teaches this is software engineering. CS is literally codemonkey studies.
All CS are codemonkeys but not all codemonkeys are CS majors. This is a really sad truth of computer science, anyone else can get your job and will probably get paid more than you.
As a math major working as a software developer, I advice that you find something else that you like and study that, and then just learn programming on the side or take programming electives.
If you find that you are an empty shell of a human being and have no other talent or interest then go right ahead into CS.
>>8011711
Many CS advisers will tell you the major in something else in undergrad and then do CS in grad school.
>>8011711
Discrete Math
Data Structures
Algorithms
I would supplement those courses with Calculus I-III, Linear Algebra, Abstract Algebra, Analysis, Mathematical Logic (Advanced course)
Are the three "most important" CS courses you need to take. Ignoring OS, and other "applied" courses.
You can go into many different areas:
Artificial Intelligence; Computation and Language; Computational Complexity; Computational Engineering, Finance, and Science; Computational Geometry; Computer Science and Game Theory; Computer Vision and Pattern Recognition; Computers and Society; Cryptography and Security; Data Structures and Algorithms; Databases; Digital Libraries; Discrete Mathematics; Distributed, Parallel, and Cluster Computing; Emerging Technologies; Formal Languages and Automata Theory; General Literature; Graphics; Hardware Architecture; Human-Computer Interaction; Information Retrieval; Information Theory; Learning; Logic in Computer Science; Mathematical Software; Multiagent Systems; Multimedia; Networking and Internet Architecture; Neural and Evolutionary Computing; Numerical Analysis; Operating Systems; Other Computer Science; Performance; Programming Languages; Robotics; Social and Information Networks; Software Engineering; Sound; Symbolic Computation; Systems and Control
http://arxiv.org/
Guys. Make me a fucking curriculum.
By the end of the six years, I want to be able to go through this journey with the same knowledge as somebody who has a bachelors in mathematics, chemistry and physics.
If you could recommend some books on philosophy that'd be great too.
I've already done this on my own for two years while doing my chemical engineering degree and I'd say I'm reading master level books at the moment, but I'd like to get a stronger foundation.
Please don't recommend me the /sci/ dictionary since I've already read all of it. Please and thank you.
Discrete Mathematics of Continuous Objects, Eachet & Dai
Formulation of Nonaxiomatic Zermelo–Fraenkel set theory, Yuri Sonofahor
Introduction to Multicellular Coenocytes and Synctia, Gus Zulmaekum-Geyboi
Applications of Gravity without Fields, Bigguy Foryu
>>8011513
wait if you're reading master level books why do you need a curriculum to get the same knowledge as somebody with a bachelors
>>8011610
This, I published 50 papers in advanced memetic genetic mathematics and I have read all of these
>actually trying this hard to discredit the 3% of scientists who don't believe in man made global warming
>not suspicious at all
>actually trying this hard to discredit the <1% of scientists who don't believe in evolution
>not suspicious at all
>>8011515
Evolutionary Biology is not an empirical science though. Its still a theory. You can't go back in time and see how species evolve.
>>8011487
>97% of scientists write papers that agree on something
because those who don't basically get no grants, except for a lucky few who get funded from independant oil companies.
>PhD in Organometallic chemistry
>>8011333
>Organometallic chemistry
If I've ever heard a meme degree, this has to be it.
>>8011333
>PhD in condensed matter physics
Welder
i think this is going to go sideways, but still. what's a good introductory macroeconomics textbook that isn't bloated? i'm used to reading math textbooks, so books like mankiw's that seem to drift from the core of the subject are annoying for me to read. i'm pretty sure the subject, at an introductory level, doesn't really takes 900 pages. i'm curious about how currency and trade work. also it'd be great if the author doesn't seem to be biased
bumpy
>>8011166
Pearson macroeconomics. Its s white paperback text book.
>>8011202
any particular edition?