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Archived threads in /sci/ - Science & Math - 848. page

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Tell me about Villani. Why does he wear the spider?
45 posts and 7 images submitted.
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Clearly he is a supervillain.
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>>8675683
Well Dress Mathematics.
Autistic screeching
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>>8675683
Who is this Dr. Who lookin' nigga?

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Proof me Wrong
167 posts and 6 images submitted.
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>>8670476
In the last few years there's been achievements made in holographic field theories and things like wormholes on the quantum level. Connectedness due to higher dimensions, hyperspheres, manifolds, isn't necessarily due to gravity. It's potential in almost a frictional sense, like the chargeunit of the proton having the possibility for wormholes on its radius because of the high density of vacuum fluctuation shows that the Casimir effect, which isn't gravity or magnetism according to the mainstream theories we have, is simply the pressure of space's natural force vectors, in a way that gravity and magnetism aren't pressures but attractors. The gravitational realm is attracted to the magnetic realm in a way that can only be described as a dependency on the micro/macro relationship between the two. No magnetic atoms, no gravitational objects. The interdependencies within wormhole-connected space almost comes with its topographical inverse and, having relationships with both gravity and magnetism, will probably be the place that unification theories will come to, like topography and entanglement or something.
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>>8670476
Can I take that as a "yes"?
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>>8670476

magnetism = electromagnetic waves = gravity


so i tend to agree with you OPie

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New stupid questions thread, old one maxed out

[eqn] \int_{sin(x)}^{sin(x^2)} sin(t^3) dt = ?[/eqn]
323 posts and 43 images submitted.
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>>8669376
do [/, not [\
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>>8669368
Whoops, i meant [math]\frac{d}{dx}[/math] of the term in the OP.
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>>8669368
>>8669422
http://mathmistakes.info/facts/CalculusFacts/learn/doi/doib.html

I think I've just hack the universe. I know how to travel into the future. It's a thing I call "stipes stercore". Don't believe me? By the time you have finished this sentence you have travelled 5 seconds into the future.
53 posts and 4 images submitted.
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The answer is 36
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>>8677838
this
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What a useless binary operator xD

>Do every exercise in the book

Is this a meme? I have never actually worked through every exercise in a textbook, but for Hartshorne I am seriously considering it.
11 posts and 2 images submitted.
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what do you mean by 'is this a meme?'
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Lrn2meme fgt pls
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Let's have a reading group, just post exercises here and people will work through them

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Do we agree that someone who can't learn a subject without someone else's help is a brainlet ?
Assisting to a lecture does not count ofc, we're talking 1 on 1 tutoring sessions
14 posts and 1 images submitted.
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>>8680223
>Do we agree that someone who can't learn a subject without someone else's help is a brainlet ?
so everyone who pays for school is a brainlet?
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If you cannot read a text book, understand the concepts, and do the exercises, you are a brainlet.
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>>8680233
I said lectures don't count

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What does /sci/ think about MENSA?
23 posts and 3 images submitted.
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>>8679992
Regardless of their intelligence or talents they're largely a group of jerks and losers.
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>>8679992
I think most members are intelligent enough to know Mensa is not an acronym and thus should not be written in all capital letters.
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>>8679992
Bunch of retards.

Ones I know compensate for being in MENSA due to other insecurities.

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Proof that reincarnation is what happens after you die through logic:

>The earth will be 20 billion years old when it dies.
>A human may live for 100 years.

Atheist belief:

You die and that's it.
The chances of you being alive right now are 1/200000000. That's 0.0000005%.

Christian belief:

You die, you go to heaven or hell for eternety.
The chance of you being alive right now is 1/infinity. 0.000000000001^infinity %

Reincarnation:

You die and are born over and over.
Even if the universe can support life only 50% of it's lifespan. That's a 1/2 chance of you being alive right now. 50%. Same odds of flipping a coin.

Reincarnation is the much more likely scenario
13 posts and 1 images submitted.
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>>8679939
>the chance of A when B is equal to the chance of B when A
kys
/thread
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You're assuming substance dualism true, and that had 0% chance of being.
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>>8679939
If you have 1 billion options, each with a 1 in 1 billion chance of happening, any single one of the possible outcomes will be improbable. Yet that doesn't change the fact that one of them will happen.

Similarly, each and every object is an improbable arrangement of atoms. Yet the object exists, regardless of how improbable it is. And any other arrangement would also be highly improbable, yet one of those highly improbable outcomes did occurred.

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Please let me know if you are savy in Matlab. I know C, Assembly and Maple TA but I have never touched Matlab. I have a project that I need to do that I can do in real life by hand but I can't understand the syntax in Matlab.
21 posts and 6 images submitted.
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1. Write a program that counts through every permutation of four six sided dice and find the total of
the three highest valued dice.
A.
Calculate the permutations of rolling four six
sided dice
B.
Plot a histogram of the
totals
C.
Calculate the mean and standard deviation of the totals
D.
Plot a histogram of the values for the lowest valued, second lowest, third lowest, and highest value dice
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2. Write a program that performs multiple die rolls using a random number generator
Each die must be assigned an integer value between 1 and 6 inclusive, with uniform probability for each value. For
each simulated roll, find the total of the three highest valued dice. Keep a count of the number of times each outcome occurs.
A.
Plot a histogram of the totals when the number of iteration is 10,000
B. Plot a histogram of the totals when the number of iteration is 1,000
C.Plot a histogram of the totals when the number of
>>
anyone know Matlab?

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As someone who does not study physics, the Copenhagen interpretation seems very difficult to accept while Bohmian mechanics seem very intuitive. What are the main reasons from the viewpoint of physicists to prefer the Copenhagen interpretation?
40 posts and 1 images submitted.
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Explain how pilot-wave theory is more intuitive than Copenhagenism without using "muh determinism"
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let H be the separable complex hilbert space with inner product whose basis is given by the set of interpretations of quantum mechanics..
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>>8677910
Determinism is extremely appealing.

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Realistically, what's the world going to look like down the road with climate change and global warming? I mean what's the environment going to be like when we're all in retirement homes, or what it'll be like in a 100 years.
59 posts and 6 images submitted.
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>>8678723
Who cares, were going to war with russia soon.
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>>8678726
Not anymore. Shillary was the one pushing for war and she got resoundingly beaten.
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Nobody knows. If somebody says they know then they are lying. It's never happened before in recorded human history so we have nothing but vague ideas based on nothing

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Here's an extract from an interview with James Watson, one of the men who discovered the double-helix structure of DNA, in 2007:

>He says that he is “inherently gloomy about the prospect of Africa” because “all our social policies are based on the fact that their intelligence is the same as ours – whereas all the testing says not really”, and I know that this “hot potato” is going to be difficult to address. His hope is that everyone is equal, but he counters that “people who have to deal with black employees find this not true”. He says that you should not discriminate on the basis of colour, because “there are many people of colour who are very talented, but don’t promote them when they haven’t succeeded at the lower level”. He writes that “there is no firm reason to anticipate that the intellectual capacities of peoples geographically separated in their evolution should prove to have evolved identically. Our wanting to reserve equal powers of reason as some universal heritage of humanity will not be enough to make it so”.

Is he right?
177 posts and 35 images submitted.
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we don't know
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>>8677104
What do you think is the best explanation based on the data that is available?

And just to be clear, you are then admitting it is perfectly possible that certain races could be, on average, less intelligent, as determined by their genes, correct?
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>>8677098
> Are racial differences in intelligence scientifically true?
Considering that nutrition plays a huge role in development and we don't have much in the way of research into intelligence across races that corrects for differences in nutrition, I'd say the answer is "Who the fuck knows, not enough data."

And that's not even touching things like lead poisoning, which has only declined relatively recently and even then somewhat unevenly.

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I also inherited a database design that broke the first of Codd's rules.

What's your worst experience?
13 posts and 1 images submitted.
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>>8679885
They didn't declare the variables at the start of the program
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This one time I went on 4chan and some idiot made a thread about programming on a board without code tags.

In school and uni I was always the designated programmer so I didn't have to deal with other people's code, but when I started working I got to try and make sense of a couple ten thousand lines of uncommented code with no discernable code style. Mix of tabs and spaces for alignment (fun in Python!), spaces sometimes missing where they should be (after commas etc) and sometimes too many spaces where they aren't necessary.
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>>8679885
There was an actual brain damaged guy in a MATLAB class I took a few terms ago. Huge surgical scar from the nape of his neck to the top of his head.
One day, he asks me to help him debug his assignment, so I take a look at it... and it wasn't even code. I mean, there were elements of code- like a couple of function names thrown in here and there. But it was something completely nonsensical like:

7X =answer
linspace
fprintf('answer')
[a:3:h]
X=2;

Honestly, that was the most completely speechless I've ever been. I think I finally ended up just saying that I didn't know what was wrong with it and that he should ask the instructor.

This was like 3/4 of the way through the term, by the way. And he stuck it out to the end. I don't know why nobody told him to drop out.

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Anyone willing to check my math?
I'll provide the snippets from Munkres, Topology first.
17 posts and 10 images submitted.
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>>8679643
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>>8679645
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>>8679646

Explain this.
19 posts and 5 images submitted.
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>>8679601
Poorly drawn cats look like poorly drawn birds.
QED
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Explain this.

https://en.wikipedia.org/wiki/Rabbit%E2%80%93duck_illusion
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>>8679608
I've never seen a rabbit or duck look like that. Draw it anatomically correct and you'll see they don't look anything alike.

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