Archived threads in /sci/ - Science & Math - 238. page
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2005 Nobel Laureate in chemistry, Richard Schrock, is speaking at my uni today. What should I ask him in the off chance I get to approach him?
Why did you choose a meme field instead of physics?
>>7982794
Good meme question.
>>7982791
"If you're so smart, why don't you post on /sci/ where the true geniuses are?
Hey /sci/. I'm having a hard time with getting intuition on why Cantor's Diagonal Proof is correct.
Does anyone know why I couldn't use the reasoning of this proof, replacing a Natural Number set analogue in place of the Real Number set and then use Cantor's reasoning (with the difference of numbers residing to the left of the decimal point and the list range being 1 to +ing) to claim that my Natural Number set analogue is uncountably infinite?
I don't want to rehash the Diagonal Proof, but I hope my question makes sense to mathbros.
>>7978273
edit>> "...with list range being 1 to +inf.."
>>7978273
i thought because the real numbers can not be displayed as such a set of sets
isn't that the point of the proof?
>>7978273
In cantours proof, the list of all numbers is supposedly Aleph Null in size, every number has a natural number assigned to it (S1,S2,Sn etc)
Just to make sure, you ask why it won't work for a list that is size Aleph right?
Anyway the proof works because there are Aleph Null digits in the decimal expression. That's the crux of the proof.
You can match a natural number for every S and therefor an index in the decimal expression for every S, because both are Aleph Null in size. Then you can use the...
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The fact that the observable universe is expanding at an accelerating rate had always baffled me. Surely gravity demanded that the rate of expansion decrease over time, or if the distances between galaxies were so great then the expansion rate might be static.
We seem to live in a universe in which nothing occurs in isolation. If you find one ant, you will find billions. One christian, billions, one galaxy, billions.
So it seems reasonable to infer that if we find one big bang giving rise to one universe, we should expect to find billions.
And if we are indeed surrounded by billions of other universes, presently undetectable due to their remoteness, we should expect that gigantic mass to exert its gravitational influence by pulling our universe apart at an increasing rate.
Yes.
Yes?
>>7985347
No. The universe, as far as we know, could be open and infinite, then the other universes could not exert any force since they cannot be in the same dimensional space. If not, gravity should be able to propagate in other dimensions. Even in that case we should detect some anomaly in the mass distribution in the universe, which we have not so far (Just black matter, but well, this is well beyond speculation)
>>7985347
Yeah yeah, you could come up with as much bullshit as you'd like... or you could go to a fucking university and study actual physics so you stop making retarded threads like this.
>>7985368
why so angry?
Do you have friends you work on problems with? I'm specifically thinking of math, because that's what I do and what I want, but I'm just wondering about the intersection of other peoples' social lives and math/sci.
If you have math/sci friends, did you meet them in university? At work? I feel like there's not a single way to meet a math/sci friend outside of that.
Describe your get-togethers, do you work on problems? Have you worked on a recent problem with a friend in your garage with a cool whiteboard and workstation?
:(
>tfw want a friend like this but feel like anyone around has too much of a life to reciprocate
/sci/ doesn't get to bring friends
>>7984500
I have a friend that I discuss problems with pretty much every day but we're both EEs. I also get together with a bunch of coursemates every now and then to go over stuff.
This mostly involves meeting in the library and chatting about bits that are complicated/not covered well. Usually the person who understands it best explains it to everyone on the whiteboard and then we collectively solve problems. Sometimes we go over problem sheets and shit as well.
I do study a lot of pure mathematics in my...
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Is any person smart enough to get a PhD,
assuming they have no mental disorder,
they have enough money to attend university,
they devote sufficient time to studying
and they live in an environment that supports their academic pursuits?
>>7983587
>Is any person smart enough to do x, given [requirements to do x]?
Yes
>>7983611
I guess my real question is,
Is intellectual achievement merely a function of will? Or are there subtle, imperceptible differences in our mental faculties that would only preclude us from higher education when we reach an indeterminate level?
Take Einstein or Feynman. They obviously were from well-off families that wanted them to go to university, themselves did not exhibit mental disability, and studied furiously and continuously. Are the towering achievements of Einstein, Feynman or Newton the result...
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>>7983630
Sub 150 brainlet detected.
Please post some exact solutions for "well-known" constants.
Here, "well-known" includes AT LEAST 10 constants beyond e and pi. Have some rationality in what you'd consider a "well-known" constant.
Does this "cleo" character have a tendency to share surprising solutions for various constants? Is the "cleo" character an application of the "Wolfram Alpha"?
Mole
Planck Length
Planck Mass
Plank Constant
Boltzmann Constant
Ideal gas r values
C (speed of em in vacuum)
>>7981468
And where are the solutions for the mentioned costants?
...
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Monty Hall Problem:
How in God's name does switching doors I'improve your chances?
There are three doors. You pick one. One door is eliminated. Leaving two. 50/50 chance. Monty Hall is bullshit.
There's already a probability for retards thread
>>7980857
You're a retard if you believe that Monty Hall trash. The chance is obviously 50/50 still, and switching doors makes no difference.
>>7980864
>I can't understand it and it's not intuitive so it's wrong WAAAAAAH
Just go in the other thread, it's explained there
>make universe absolutely immense
>99,9% is dead rocks or literallly nothing
>max speed is so slow you basically can't go anywhere
>procedurally generated shit all over the place, quality over quantity
BRAVO GOD
>make universe absolutely immense
immensity is relative
>max speed is so slow you basically can't go anywhere
WHAT IS A WARP DRIVE
>99,9% is dead rocks or literallly nothing
what are quantum fluctuations of the vaccuum
>procedurally generated shit all over the place, quality over quantity
what
>>7980798
If that was the only problem...
> /sci/ - Fedoras and Intellectualism
>http://www.nature.com/naturejobs/science/articles/10.1038/nj7597-139a
So, nobody needs skepticism nor objectivity? Wow, what a nice science we have there. Looks like people in science are more afraid of made-up research than they are concerned about real thinking.
>>7985939
Surveys aren't science.
>94% of the scientists surveyed felt that scientific virtues can be learned.
>>7985952
Are you on of those who still need to learn?
>>7985939
Fedoras and neck-beards play no role in science.
Why do suicide rates increase dramatically as a society becomes more successful and prosperous?
People living for generations in disease and squalor with no hope for improvement just carry on indefinitely, yet the wealthiest and most educated people in the world kill themselves constantly. Shouldn't it be the other way around?
The rich are more likely to committ suicide than the poor
>>7984657
Success allows people to face the inherent meaninglessness of life, if youre distracted by the struggle to survive you dont have time to think about it
>>7984657
Because the hard sciences are way further ahead than the social sciences.
>Pair-bonded women who were near ovulation reported greater extra-pair flirtation and greater mate guarding by their primary partner. As predicted, however, these effects were exhibited primarily by women who perceived their partners to be low on hypothesized good genes indicators (low in sexual attractiveness relative to investment attractiveness).
>These findings demonstrate ovulationcontingent shifts in desires and behaviors that are sensitive to varying fitness payoffs, and they provide support for the good genes...
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>>7984182
hi gamma
>>7984182
>tl;dr, when women in relationships with beta males ovulate, they find their beta partners less attractive and notice and seek attention from alpha males more
> greater extra-pair flirtation and greater mate guarding by their primary partner
> by their primary partner
>women
>reported
>greater
>by...
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>>7984192
The women flirted outside of the relationship more and the men guarded them more so this wouldn't happen.
What advantages do elite universities have over regular ones?
>>7982828
The jews earn more if you pay more for an "elite" one. Other than that its 90% branding and 10% actual better profs.
t. Ivy league graduate
>>7982828
their students come here to brag because that is the only thing keeping them from killing themselves
You can literally buy your grades
![com-alg[1].png](https://i.imgur.com/rv9JiJ9.png "com-alg[1].png")
Studying commutative algebra, what are some cool things further on that I might be able to appreciate now?
AB=BA
>>7981750
/thread
Why do you chose science or math, guys?
I have just met a person who is leagues above me. I have seen people with a quick problem solving skill or something similar before, but they have their flaws.
But this guy, he seems like another John Von Newmann. He's basically inhuman in term of intelligent.
It makes me feel like I'm worthless and I will never contribute as much as him.
It makes me question myself why did I choose this in the first place. I thought I was going to do something I love and contribute something. But in the end, everything shattered.
>>7980699
While he may potentially be a wizard, it's also very likely that he sincerely enjoys his subject to the point where he studies and practices for leisure.
What did he do, if I may ask, that has made you feel so insignificant? John von Neumann's particular ability was his ability to quickly perform brute-force mental calculations and considerations. This would have given him a huge advantage since it would allow him to essentially increase the rate at which he can consider, accept, or reject ideas.
>>7980699
I'm 18 and I'm in senior level uni classes for mathematics (category theory and algebra. I've taken complex and real analysis, group theory, ordinary and partial Diffy Q's already.) Tbh I don't give a damn when someone isn't as proficient as me, so unless people are absolute dicks, I wouldn't worry about being looked down on or anything.
Also, for me, I just really like the subject so I'm highly motivated to learn more. I basically have no friends but just sit around and read...
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>>7980699
There's always someone better. That's life. Stop whining and grow up, you fucking man child. Think of it as a lesson in humility.
Are there LED street lights in your city?
Our city had planned on installing these to replace the old yellow sodium lamps. They never did in the end, but I wish they did.
It be nice to drive at night and not have everything be colored piss yellow and washed out.
They save a lot of electricity, and I heard that they could help to reduce crime.
>>7974994
> I heard that they could help to reduce crime. [citation needed]
I see LED lights all the time, no idea if they are better or not visually
>>7974994
sodium bulbs are cozy tho
