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Archived threads in /sci/ - Science & Math - 236. page


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Can anyone explain reverse engineering a program ? Like, how do you match up a senseful bulks of code from just a lot of opcodes and assembly?
23 posts and 1 images submitted.
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>>7978975
The term you're looking for is "visualization." There are no good decompilers just like there are no fully optimizing compilers. To native assembly programmers those bulks of code ARE sensible already, you're just not fluent in the language. It's a very hard problem made all the harder when you don't have a formal notion of what an algorithm is.
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>>7978975
There is software out there that helps with this. Shows you memory addresses, and functions etc. It's still no easy task however, but anyone who does it seriously is not just going straight from assembly.
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>>7979011
Example
https://www.youtube.com/watch?v=9VO74HdCex0

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I think it's 6.
16 posts and 1 images submitted.
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>>7978972
2. Its just flipped upside down.
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>I think it's 6
pls be bait
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6

Are there algebraic ways to find features of such equations and other factorial functions? such as range, domain, y/x intercepts, absolute minimums or maximums, etc.
20 posts and 2 images submitted.
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Knowing the Gamma function is probably a good starting point
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>>7978941
Heard of it, haven't taken the time to study it
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>>7978944
> havent heard of gamma function
>>>>>>>>>>>>>>>>>>>>/hist/

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>the universe is 13.6 billion years
>time is relative

contradiction

if absolute time doesn't exist, it doesn't make sense talking about the age of the universe
20 posts and 3 images submitted.
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>>7978927
Time is absolute, how quickly it appears to pass for an observer is relative
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>>7978935
>Time is absolute nonsense

ftfy
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>>7978927
>years
Excuse us for having a relative system of measurement.

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I fucked up royally /sci/. A month and a half ago I submitted a paper to this journal that's prestigious in my country, but I just found out that my paper is fucking garbage. I read it and holy shit, I can't believe I submitted it like this. I was rushed by everyone around me because there was a different project I needed to do at the time. I missed the required font, reference style and honestly some things that I should have taken into accord I didn't. I'm fine with the content, but I'd expand it for at least a few pages. What's the etiquette? Can I resubmit it or is it a goner? How would I even go about doing that so that I at least end up looking like just a retard, instead of a disrespectful retard?
11 posts and 1 images submitted.
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tbqh senpai u can start by killing urself lmao
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>>7978898
As things are now, I might as well do so
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I don't see a "I take it back" option, but I really don't know and you should find out by asking.

Otherwise, if the content is so good you might just get that message back and you change it in the second run.

And you can always give it to another journal.

>what are the applications of this?
Why do these normies study math if they don't find it interesting enough without any stupid applications wtf reeeeee
13 posts and 3 images submitted.
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Applications can be just as beautiful and every mathematician knows this.
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>>7978841
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>>7978853
Solving real life problems is a great exercise for you to get a clearer understanding of your knowledge.

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>She will never teach you rigid body mechanics while teasing you for being a brainlet.
Just kill me now senpai.s
17 posts and 8 images submitted.
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>>7978833

>rigid body mechanics
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>>7978848
Ya got da joke buddy
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>>7978833
>She will never let you explore her rings.
Why even live?

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Hey /sci/, an aquatince of mine says that (1/0)=infinity.

Is he right?
16 posts and 1 images submitted.
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lim x->0 1/x = +inf from the right, - inf from the left.
But it's still a limit, not the actual result.
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>>7978612
No, because 0 times infinity does not equal 1.
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>>7978612
1/0=0

This star is one of the most luminous stars known, it radiates as much energy as the sun does throughout the year, in around 20 seconds. It is located in the Pistol Nebula. It is invisible due to the interstellar dust in the way.
22 posts and 4 images submitted.
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All right, genius. If it's invisible, how did you take a picture of it?
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>>7978615

oh you
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>>7978615
With a dust filter obviously.

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Having a solid base of algorithmic knowledge and technique is one characteristic that separates the truly skilled programmers from the novices. With modern computing technology, you can accomplish some tasks without knowing much about algorithms, but with a good background in algorithms, you can do much, much more.

To find /algorithm general/ look for Dijkstra's FUCKING FACE in the catalog
19 posts and 2 images submitted.
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so anyone know anything about combinatorial optimization?
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>>7978837

I'm moderately interested in this.
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>>7978837
what sort of time complexity are you looking for? And what's the actual problem?

>normie distribution
REEEEEE
12 posts and 2 images submitted.
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>>7978465

What, do you prefer "Gaussian" or something?
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>>7978494
Bell curve
>>
me on the left

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Is it possible to selectively breed an insect species under extremely Oxygen rich conditions and make them create offsprings with bigger insects, and possibly after dozens of generations, create a giant insect species ?
21 posts and 3 images submitted.
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>>7978328
Sure, but it would take a whole lot of time.

Keep in mind that if you release them to our atmosphere outside of oxygen rich controlled conditions they will die, so you wont be able to unleash them to the population.
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honestly you can do anything with selective breeding. especially if you're talking about giving each insect a perfect environment for growth
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theoretically, if this was done under conditions that exactly a replicate of the conditions of the late carboniferous period, sure.

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He says that people became controllable and slavery started when humans became afraid of pain and death. Is that accurate?
23 posts and 2 images submitted.
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> when humans became afraid of pain and death
so, since forever ?
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>>7978012
That guy is an idiot.
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>>7978016
because ?

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If energy is proportional to mass, how come photons (which are massless) have energy?
22 posts and 2 images submitted.
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>>7977925
http://math.ucr.edu/home/baez/physics/ParticleAndNuclear/photon_mass.html
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>>7977925
Energy is proportional to mass and other things. E=mc^2 is a simplification. The "complete" equation is E= sqrt[ (m0 c^2)^2 + (pc)^2 ], p being momentum.
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>>7977925
All mass is energy, not all energy is mass

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> Gauss works with complex numbers, topology, differential geometery
> century passes
> peano fucks around with goddamn arithmetic
> barely even multiplication, let alone subtraction or division
> only works on extremely limited set, fuck complex, fuck transcendental, fuck irrational, fuck negatives, fuck even fractions!
> treated on the same level as Gauss by some
Seriously, his proofs are beyond retarded, using that S(n) notation as if it has any use whatsoever. No, 3 isn't a thing, it's S(S(S(0)))! We all know people are going to write it as S^3(0), then eventually just 3. And goddamn, it's not like we fucking needed to know what 3 was! This dumbass is like the SJW of math, tittering around about stupid insignificant shit that has no usefulness in society, when people are already light years ahead. Sorry peano, maybe if you were in the stone age, you could have been useful, when we couldn't fucking count the layers of shit in our matted asshole hair without your S notation, but we are way beyond that.
12 posts and 1 images submitted.
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>I don't understand the foundational crisis in mathematics
>Rigor is a meme
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>>7977784
> mfw all the math before it still stayed valid despite this """"groundbreaking"""" discover of addition and multiplication, now in with rigor(tm)
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>>7977758
Yes, the foundation crisis was the autism period of mathematics. Still, nobody's proven P?NP so it's not like we're any closer to getting past Godel's notion of incompleteness.

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