/sci/ - Science & Math

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Anonymous Mon 06 Sep 21:02:11 2021 No.13610904 View Reply Last 50 Original Report

Quoted By:

>B-but muh horse dewormer

123 posts and 19 images omitted

Anonymous

Anonymous Wed 08 Sep 2021 13:59:48 No.13617132 Report

Quoted By: >>13617143

>>13611141
>random in vitro nonsense becomes magical when they're in a living host

Anonymous

Anonymous Wed 08 Sep 2021 14:03:37 No.13617143 Report

Quoted By: >>13617181

>>13617132
>random in vitro nonsense

https://www.ncbi.nlm.nih.gov/pmc/?term=in+vitro+viral+testing

>Items: 1 to 20 of 111675

Anonymous

Anonymous Wed 08 Sep 2021 14:06:47 No.13617153 Report

Quoted By:

>>13611194
imagine being autistic and also taking the horse dewormer

>Poe's law
imagine invoking poe's law on an ironic greentext

you should put down the horse dewormer

>put a smiley on the post at the end indicating irony
i missed the meeting in which that was universally agreed upon, so it didn't happen. sorry.

Anonymous

Anonymous Wed 08 Sep 2021 14:14:50 No.13617181 Report

Quoted By:

>>13617143
i find it hilarious that these are the same science illiterate retards who claim that the vaccines aren't safe because they aren't guinea pig for big pharma

Anonymous

Anonymous Wed 08 Sep 2021 16:29:11 No.13617727 Report

Quoted By:

>>13616213
>>13616565
>>13616960
>They're only being evil by accident, guys! Just let them keep doing it, and feel smug about how you know better as you line up for gene therapy

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Anonymous Wed 08 Sep 15:52:35 2021 No.13617557 View Reply Original Report

Quoted By: >>13617562 >>13617566

Hi /sci/, brainlet here. Been getting into proofs in my spare time. I figured this one last night, but now I can't figure out how I made this step. How exactly does
>(-1)^2k+1

become

>(-1)^2k (-1)?

Since the exponent was plus 1, not multiply by minus one. Appreciate any advice.

Anonymous

Anonymous Wed 08 Sep 2021 15:55:22 No.13617562 Report

Quoted By: >>13617622

>>13617557
x^a * x^b = x^(a+b) for all x,a,b.

Anonymous

Anonymous Wed 08 Sep 2021 15:55:53 No.13617566 Report

Quoted By: >>13617622

>>13617557
Exponentiation is repeated multiplication.
(-1)^n = (-1) * (-1)^(n -1)

Anonymous

Anonymous Wed 08 Sep 2021 16:06:27 No.13617622 Report

Quoted By: >>13617653

>>13617562
>>13617566
Thanks both, I think I'm on the verge of it, bear with me.

I understand that x^a * x^b = x^(a+b), but here it's

(-1)^2k+1

We're taking (-1) to the power of +1, which results in (-1). But why are we multiplying the whole (-1)^2k by (-1) now, rather than simply adding it?

Anonymous

Anonymous Wed 08 Sep 2021 16:13:19 No.13617653 Report

Quoted By: >>13617706

>>13617622
Take
x^a * x^b = x^(a+b)
Substitute x=-1, a=2k b=1. You get
(-1)^(2k) * (-1)^1 = (-1)^(2k+1)
Replace (-1)^1 with (-1), and now you literally have the equation you want. What's the problem?

Anonymous

Anonymous Wed 08 Sep 2021 16:22:14 No.13617706 Report

Quoted By:

>>13617653
got it! Clicked. I was totally overthinking it. Thanks, anon.

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Anonymous Wed 08 Sep 14:19:11 2021 No.13617199 View Reply Original Report

Quoted By: >>13617210 >>13617685

So this is what DeepMind calls "solving" protein folding entirely? LMAO, it's not even close!

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Anonymous Wed 08 Sep 15:56:23 2021 No.13617569 View Reply Original Report

Quoted By:

what kind of eye protection do you wear in the lab?

2 posts omitted

Anonymous

Anonymous Wed 08 Sep 2021 16:00:54 No.13617593 Report

Quoted By:

you have never done chemistry if you have never gotten 2M sulfuric acid in your eyes. it's our secret rite of passage and it's said to catalyze your visual learning

Anonymous

Anonymous Wed 08 Sep 2021 16:02:30 No.13617602 Report

Quoted By: >>13617609 >>13617620

>>13617584
you seem upset

Anonymous

Anonymous Wed 08 Sep 2021 16:03:49 No.13617609 Report

Quoted By:

>>13617602
that doesn't answer the question though

Anonymous

Anonymous Wed 08 Sep 2021 16:04:48 No.13617612 Report

Quoted By:

>>13617584
It's a bot

Anonymous

Anonymous Wed 08 Sep 2021 16:06:15 No.13617620 Report

Quoted By:

>>13617602
just curious. I know this is 4ch but even so the autism required is something else.

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Anonymous Tue 07 Sep 02:33:21 2021 No.13611647 View Reply Original Report

Quoted By:

Which mathematics software is the best?

Octave, Mathematica, Matlab, Sage, Maple, or Maxima

33 posts and 4 images omitted

Anonymous

Anonymous Wed 08 Sep 2021 07:55:32 No.13616365 Report

Quoted By: >>13616933

>>13613183
>I had trouble with doing some inverse Laplace transforms
With which libraries? I TA a control engineering course and have never had a student report any issues inverse Laplace transforms to me.

Anonymous

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Anonymous Wed 08 Sep 2021 08:04:00 No.13616390 Report

Quoted By:

>>13614134

Anonymous

Anonymous Wed 08 Sep 2021 12:47:05 No.13616933 Report

Quoted By: >>13616956

>>13616365
I ran it again and the error was 'PolynomialDivisionFailed'. All the imports used in the math were from sympy. It was for the control of a plane. Don't know why - the process is creating a matrix A, switching the elements of a row, getting the determinant of the new matrix B, multiplying by a constant factor, and then dividing by the original matrix A determinant and the Laplace S term before doing the inverse transform - untill here it works fine. However, when I tried to dividide by the exponential of an -S Laplace term instead it bricks. The error gives me a 'hint' of using a different simplifcation algorithm at least. Still, the expression runs on Matlab 2018, and I was able to get the same graphs as a book when using the values it gave me.
The imports are:
from sympy import sin, cos, exp, Heaviside, I, re
from sympy.abc import s,t
I'm also representing fractions as value.p/value.q, because otherwise the code won't even finish running.

Anonymous

Anonymous Wed 08 Sep 2021 12:57:50 No.13616956 Report

Quoted By:

>>13616933
To further elaborate, after a long chain of function calls the function dup_ff_div throws the error:

PolynomialDivisionFailed: couldn't reduce degree in a polynomial division algorithm when dividing [EX(33051739177.7312 + 2.98023223876953e-8*I), EX(-28050433400015.3 - 1.52587890625e-5*I), EX(5.93736104920799e+15 - 0.00390625*I), EX(5.96544453434718e+15)] by [EX(1.00000000000000)]. This can happen when it's not possible to detect zero in the coefficient domain. The domain of computation is EX. You may want to use a different simplification algorithm. Note that in general it's not possible to guarantee to detect zero in this domain.

So it's something to do with trying to divide by 0 or something? But Matlab gives me the results without a problem, so I don't know why or how Sympy chokes.

Anonymous

Anonymous Wed 08 Sep 2021 15:53:51 No.13617559 Report

Quoted By:

>>13616323
python isn't as performant as C/C++, you are delusional

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Anonymous Tue 07 Sep 13:13:14 2021 No.13613117 View Reply Original Report

Quoted By:

What is the most scientifically efficient way to learn a new language? I want to learn Portuguese

20 posts and 2 images omitted

Anonymous

Anonymous Tue 07 Sep 2021 18:00:08 No.13613962 Report

Quoted By:

>>13613936
Japanese is the best romance language

Anonymous

Anonymous Tue 07 Sep 2021 18:04:45 No.13613985 Report

Quoted By:

>>13613911
I somewhat agree, but he made it mathematically precise. He invented mathematical metaphysics.

Anonymous

Anonymous Wed 08 Sep 2021 03:45:20 No.13615777 Report

Quoted By:

idk

Anonymous

Anonymous Wed 08 Sep 2021 04:06:14 No.13615857 Report

Quoted By: >>13617551

I found Mass Immersion Approach effective and efficient.

Anonymous

Anonymous Wed 08 Sep 2021 15:50:31 No.13617551 Report

Quoted By:

>>13615857
So, learn Japanese while sitting in an onsen??

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post ur favorite science songs

Anonymous Wed 08 Sep 15:25:26 2021 No.13617444 View Reply Original Report

Quoted By: >>13617479

/sci/ music thread
https://www.youtube.com/watch?v=V83JR2IoI8k

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/mg/ maths general

Anonymous Sun 29 Aug 14:15:54 2021 No.13576443 View Reply Last 50 Original Report

Quoted By:

Alternative career decisions edition
Formerly >>13538162

319 posts and 34 images omitted

Anonymous

Anonymous Wed 08 Sep 2021 12:13:43 No.13616882 Report

Quoted By:

>>13615072
rudin is for tranny libtards

Anonymous

Anonymous Wed 08 Sep 2021 12:16:01 No.13616889 Report

Quoted By:

>>13615199
>september 7
>summer
Kek also what library isn't open year round retard-kun?

Anonymous

Anonymous Wed 08 Sep 2021 12:28:25 No.13616906 Report

Quoted By:

>>13613211
FYI, it's Coq, not CoQ. Also, Lean is going to be ripped apart by the Lean3 vs Lean4 fork.

Anonymous

Anonymous Wed 08 Sep 2021 14:57:21 No.13617343 Report

Quoted By:

>>13615199
>are you telling me you like posts about the "jewish question" in your math thread?
Of course. I understand you may be confused since you've probably never seen a theorem or a definition bearing Kähler's name, undergrad.

Anonymous

Anonymous Wed 08 Sep 2021 15:03:04 No.13617363 Report

Quoted By:

New >>13617361

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Anonymous Wed 08 Sep 09:44:37 2021 No.13616557 View Reply Original Report

Quoted By:

https://www.youtube.com/watch?v=09maaUaRT4M
How can we save society?

49 posts and 1 image omitted

Anonymous

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Anonymous Wed 08 Sep 2021 13:51:37 No.13617110 Report

Quoted By:

>>13617102
*most valuable knowledge

meme magic, he who controls the memes controls reality

Anonymous

Anonymous Wed 08 Sep 2021 13:53:15 No.13617117 Report

Quoted By: >>13617138 >>13617150

>>13617043
>Anyone that take the mutagen is a braindead cattle, and not human, and certainly not people.
If you think about it logically, it doesn't make sense for them to kill off the obedient cattle, leaving the problematic population more or less intact and privy to their evil schemes. If they are trying to kill us off, they're gonna employ a method that kills you regardless of vaccination (e.g. a "mutated strain"), and then blame the "antivaxxers" who didn't listen to the experts soon enough. You won't think about it logically, though, which is why I'm okay with you dying along with the other /pol/cattle. You all need to go.

Anonymous

Anonymous Wed 08 Sep 2021 14:01:36 No.13617138 Report

Quoted By: >>13617250

>>13617117
nigger cattle cope

Anonymous

Anonymous Wed 08 Sep 2021 14:05:20 No.13617150 Report

Quoted By: >>13617250

>>13617117
I hope you are fully vaccinated.
Remember, anything less than four shots is letting /pol/ win.

Anonymous

Anonymous Wed 08 Sep 2021 14:34:38 No.13617250 Report

Quoted By:

>>13617138
>>13617150
>nonhuman cattle fails at basic reading comprehension
I wonder if OP is learning anything from this.

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Anonymous Wed 08 Sep 07:08:07 2021 No.13616263 View Reply Original Report

Quoted By: >>13617129

Please help me out /sci/, even though this post isn't strictly a science question.

I don't go on this board often so I have no idea if this is like a well known meme or not, but does anybody remember that one guy who posts about his cellular automata spreadsheets?

He would constantly schitzopost in the threads and he had a cult looking website selling a book, but the simulations were interesting.

2 posts omitted

Anonymous

Anonymous Wed 08 Sep 2021 07:27:20 No.13616316 Report

Quoted By:

>>13616278
ZING!

Anonymous

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Anonymous Wed 08 Sep 2021 08:20:09 No.13616413 Report

Quoted By: >>13616429

Gary of optimum theory?

Anonymous

Anonymous Wed 08 Sep 2021 08:32:58 No.13616429 Report

Quoted By: >>13616478

>>13616413
I really like those. They look like vines. What's the rule to generate them?

Anonymous

Anonymous Wed 08 Sep 2021 09:02:40 No.13616478 Report

Quoted By:

>>13616429
Don't know exactly but it's from
https://sci-hub.st/https://www.nature.com/articles/459332a?proof=t
Cells have 8 possible states. Triangles look like rule 90.

Anonymous

Anonymous Wed 08 Sep 2021 13:58:36 No.13617129 Report

Quoted By:

>>13616263
>Optimum Theory was over 2 years ago
Where did the time go?

https://youtube.com/watch?v=aBIB-QchDxI

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