/sci/ - Science & Math

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When you don't even understand the problem

Anonymous Sun 26 Sep 09:28:19 2021 No.13684489 View Reply Original Report

Quoted By:

First see pic related.

The video: "How Karatsuba's algorithm gave us new ways to multiply" made me interested in this problem.
https://www.youtube.com/watch?v=cCKOl5li6YM

Now why do we need Shonage-Strassen when the lower bound is already bit shift multiplication which is on par with addition?

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Anonymous Sat 25 Sep 21:03:03 2021 No.13682976 View Reply Original Report

Quoted By: >>13684449 >>13684453

Scientifically speaking, what are the chances of a planet having a moon/sun being the same size while looking up from the ground?

10 posts and 2 images omitted

Anonymous

Anonymous Sun 26 Sep 2021 05:26:34 No.13684131 Report

Quoted By:

They're really not the same size the moon is visibly a third bigger than the sun when viewed from Earth

Anonymous

Anonymous Sun 26 Sep 2021 05:29:57 No.13684137 Report

Quoted By: >>13684440

1, it happened
probability is for uncertain things

Anonymous

Anonymous Sun 26 Sep 2021 08:47:58 No.13684440 Report

Quoted By:

>>13684137
Extremely based

Anonymous

Anonymous Sun 26 Sep 2021 09:02:26 No.13684449 Report

Quoted By:

>>13682976
I don't know if it's a matter of pure chance. The laws that govern planetary motion seem to be biased towards producing regularities. E.g.:
https://en.wikipedia.org/wiki/Titius%E2%80%93Bode_law

Anonymous

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Anonymous Sun 26 Sep 2021 09:06:56 No.13684453 Report

Quoted By:

>>13682976
It could theoretically be possible to have another configuration, but then our species’ whole psychosexual and psychosocial gestalt would necessarily be quite different.

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Anonymous Sat 25 Sep 15:51:15 2021 No.13681970 View Reply Original Report

Quoted By:

Are Lang's books actually didactic?

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Anonymous

Anonymous Sun 26 Sep 2021 04:38:21 No.13684069 Report

Quoted By:

>>13683743
Such as?

Anonymous

Anonymous Sun 26 Sep 2021 05:06:28 No.13684111 Report

Quoted By: >>13684421

>>13683703
You seem to be a careful/active/engaged reader. Of course you're going to find Lang's stream-of-conscious-tier style annoying. He's what Silvanus P. Thompson dudes graduate to when they want a few more specks of meat on their plates.

Anonymous

Anonymous Sun 26 Sep 2021 05:28:15 No.13684132 Report

Quoted By: >>13684435

>>13683703
Okay, actually what the fuck did he mean by this?

Anonymous

Anonymous Sun 26 Sep 2021 08:33:52 No.13684421 Report

Quoted By:

>>13684111
Oh, I meant to correct my post to 'consciousness' earlier.

Anonymous

Anonymous Sun 26 Sep 2021 08:46:22 No.13684435 Report

Quoted By:

>>13684132
I'm guessing looking at theorem 4.1 would explain it. I think it's the perpendicular from the circle to X, plus the arc of the circle from 1,0 to that line.
What he means by saying it's well defined is that it's didn't matter which direction you go around three circle, since they integral over the circle is 0, so going in the clockwise or anticlockwise gives the same contribution.

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Anonymous Fri 24 Sep 23:23:57 2021 No.13679630 View Reply Original Report

Quoted By: >>13683775 >>13684433

Can you solve it?

31 posts and 5 images omitted

Anonymous

Anonymous Sun 26 Sep 2021 02:08:50 No.13683775 Report

Quoted By: >>13683803

>>13679630
Its F. But it also depends on the rate of water flowing.

Anonymous

Anonymous Sun 26 Sep 2021 02:25:56 No.13683803 Report

Quoted By: >>13684022

>>13680165
>>13680324
>>13681852
>>13683775
Yeah, it could be A depending on water pressure and frequency, it could be F if everything is "normal", it could be G if someone opens the blocked path to tank D, it could be L if no water goes to F or H, it could be none if James Kirk comes with the Enterprise and blast all the tanks.

Idiots.

Anonymous

Anonymous Sun 26 Sep 2021 02:50:59 No.13683848 Report

Quoted By:

Pretty sure if you assume water and air and reasonable pipe/tank sizes it's L but it depends on lots of factors that aren't given.

Anonymous

Anonymous Sun 26 Sep 2021 04:15:25 No.13684022 Report

Quoted By:

>>13683803
>noooo what do you mean poorly specifying my retarded thought experiment could lead to multiple valid solutions?
Cope brainlet

Anonymous

Anonymous Sun 26 Sep 2021 08:45:16 No.13684433 Report

Quoted By:

>>13679630
GDEHFLKICBA

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Anonymous Fri 17 Sep 23:36:41 2021 No.13654049 View Reply Last 50 Original Report

Quoted By: >>13683976

What axioms do you believe in, /sci/?

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Anonymous

Anonymous Sun 26 Sep 2021 03:39:59 No.13683952 Report

Quoted By:

BUMP

Anonymous

Anonymous Sun 26 Sep 2021 03:52:56 No.13683976 Report

Quoted By:

>>13654049
a point on a line is a point on a line.
so far in X years of this shit, no one has managed to express a dissenting opinion that makes any sense

Anonymous

Anonymous Sun 26 Sep 2021 07:40:54 No.13684324 Report

Quoted By:

>>13679455
>You still can't prove it's consistent
Make it an axiom.

Anonymous

Anonymous Sun 26 Sep 2021 08:00:57 No.13684366 Report

Quoted By:

>>13679631
Why?

Also, isn't countable choice vastly milder than transitive closure for all sets?

Anonymous

Anonymous Sun 26 Sep 2021 08:20:57 No.13684398 Report

Quoted By:

>>13654138
You.
I.

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Loop Quantum Gravity is BS

Anonymous Sun 26 Sep 05:37:18 2021 No.13684152 View Reply Original Report

Quoted By: >>13684250

>So you don’t think that other approaches like loop quantum gravity have . . .
Loop quantum gravity is total BS. I mean, it’s really not worth discussing it. Don’t put that in the book. But, it really isn’t.
>This sentence would earn millions . . . (laughs)
I’ve said it before. It really is.

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Anonymous Fri 24 Sep 17:17:27 2021 No.13678170 View Reply Last 50 Original Report

Quoted By: >>13684217 >>13684223

Is Alexandda Elbakyan /ourqueen/?

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Anonymous

Anonymous Sat 25 Sep 2021 23:26:58 No.13683407 Report

Quoted By:

>>13681267
Like DOG COCK

Anonymous

Anonymous Sat 25 Sep 2021 23:44:32 No.13683450 Report

Quoted By:

>>13681471
>believes in made up fantasies
>calls other people stupid
pottery

Anonymous

Anonymous Sun 26 Sep 2021 06:31:00 No.13684217 Report

Quoted By:

>>13678170
Yes, I want a communist transhumanist dictatorship too. Publishing should not be open to everyone though

Anonymous

Anonymous Sun 26 Sep 2021 06:37:05 No.13684223 Report

Quoted By:

>>13678170
Too Jewish for me

Anonymous

Anonymous Sun 26 Sep 2021 06:38:24 No.13684230 Report

Quoted By:

>>13678196
Don't forget she is a communist and a Russian hacker troll spy as well

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Anonymous Sun 26 Sep 00:33:38 2021 No.13683565 View Reply Original Report

Quoted By: >>13683795 >>13683883 >>13684188 >>13684229

OK /sci/, what is your:
1) Age
2) Degree/Field
3) Income
4) How long did it take after graduating to feel like you "made it"?

16 posts and 1 image omitted

Anonymous

Anonymous Sun 26 Sep 2021 02:12:15 No.13683784 Report

Quoted By:

1. 36
2. Mathematics
3. It would sound vulgar
4. Like a fucking decade, but that’s due to the Great Recession.

Anonymous

Anonymous Sun 26 Sep 2021 02:20:31 No.13683795 Report

Quoted By:

>>13683565
21, with an AA in social sciences, making ~$25-28K a year working part time 20 hours a week. I haven’t made it, and probably never will. Just going to use my savings to move back to the Eastern European shithole I was born in.

Anonymous

Anonymous Sun 26 Sep 2021 03:09:21 No.13683883 Report

Quoted By:

>>13683565
31
Physics / data science
125k+bonus
3 years (that's when I switched into DS from physics where nobody cares about you)

Anonymous

Anonymous Sun 26 Sep 2021 06:03:17 No.13684188 Report

Quoted By:

>>13683565
29
PhD in Computational Biology
75K
Haven't made it yet. Still much to learn.

Anonymous

Anonymous Sun 26 Sep 2021 06:38:09 No.13684229 Report

Quoted By:

>>13683565
29
Medicinal chemistry/biochem
75k AUD as a research scientist (this is a below average salary here)
Never gonna make it, science was a mistake

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RETVRN TO TRADITION

Anonymous Sun 26 Sep 06:01:36 2021 No.13684185 View Reply Original Report

Quoted By:

> Quadratic Formula 1000 of years before Pythagoras
> Performed division by multiplying with reciprocals
> sexagesimal system could evenly portion in 3rds
> counted in the decad anyways for ease
> no symbol for zero for 1000's of years, used an empty space instead.
> Performed trigonometry without angles, 1000's of years before trigonometry invented
> Autistically obsessed with precision, hated infinite decimals and imcommensurable numbers- as it should be
> irrational numbers were given precisions that gave them at least repeating decimals

Have you took the Babylonian red pill yet /sci/?

Anonymous

Anonymous Sun 26 Sep 2021 06:10:34 No.13684194 Report

Quoted By: >>13684202

Wildberger and his followers are a threat to modern STEM.

Anonymous

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Anonymous Sun 26 Sep 2021 06:19:54 No.13684202 Report

Quoted By:

>>13684194
Imagine a story where a skyscraper is being built. It was a new company, and at the beginning alot of choas was going on in building the foundations. Over time, a builder saw a brick crumble, a couple days later another one saw some rivets popping out. About half way up the structure the growing risk of structural defects is becoming to big to ignore, but the project manager doesn't want to give the boss the bad news. He calculates maybe he could get away completing the structure, and it'll be in retirement by the time it falls.

Wildbergers is the guy whose also seen the reports, and has already drafted the changes, while costly and timely set back, will save the structure. But it requires notifying the stake holders that they mucked up the foundation.

What will you do, /sci/izen. Look away and pretend the problems arn't there, or let the the new generation of mathematicians do the hard work of putting math back on its correct basis.

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Sleep Thread

Anonymous Sat 25 Sep 09:47:21 2021 No.13680994 View Reply Original Report

Quoted By: >>13681215 >>13684199

Why do you feel more tired and less functioning during the day when you sleep for 6 hours wake up then sleep for another 3 hours contrary to just sleeping 6 hours and waking up? Also what are some tips to get a good night sleep? Sleep is unironically more important than food if you want to function properly during the day in my experience

1 post omitted

Anonymous

Anonymous Sat 25 Sep 2021 11:28:46 No.13681215 Report

Quoted By: >>13682010 >>13684196 >>13684199

>>13680994
>Also what are some tips to get a good night sleep?
No electronics for at least a hour before you lie down.
The intense light from screens excites your brain and is very disruptive to sleep.
Read a book in bed instead.
>t. fuck with my phone in bed every night
No heavy dinners, but I guess you already knew that.
Try to be regular, it doesn't matter if you sleep at 9 PM or 1 AM, just go to slep at the same hour most of nights.

Anonymous

Anonymous Sat 25 Sep 2021 16:00:50 No.13682010 Report

Quoted By: >>13682833

>>13681002
So it's better to sleep 5 hours wake up than sleep 5 hours then wake up and get another 3 hours of sleep in since you would be restarting your sleep REM cycle and missing those critical sleep stages?
>>13681215
I always eat a heavy carb meal before sleeping, it helps me get drowsy and sleep fast. Is there a reason why I shouldn't be eating heavy before sleeping?

Anonymous

Anonymous Sat 25 Sep 2021 20:25:21 No.13682833 Report

Quoted By:

>>13682010
Greater weight gain

Anonymous

Anonymous Sun 26 Sep 2021 06:13:58 No.13684196 Report

Quoted By:

>>13681215
>just go to slep at the same hour most of nights.
Unless your circadian rhythm isn't 24 hours. For example my circadian rhythm is a few hours more than 24 hours so I end up going to sleep 2 hours later the next day. Like if I go to sleep at 7 pm the next day I will sleep at 9 pm then 11 pm the day after that. It takes roughly 2 weeks for my sleep time to cycle around the clock and return back to the starting sleep time.

Anonymous

Anonymous Sun 26 Sep 2021 06:17:38 No.13684199 Report

Quoted By:

>>13680994
5g of Glycine at night
0.2mg melatonin
Don't eat or exercise within 3 hours of when you want to sleep
In the evening change your lights which you need on to warm yellow/orange.
And what this Anon said >>13681215
One thing I'd say is that waking up consistently at the same time is more important than when you go to sleep. Don't sleep in.

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When you don't even understand the problem

Loop Quantum Gravity is BS

RETVRN TO TRADITION

Sleep Thread