How do we reverse the effects of global warming?
Apparently cutting CO2 emissions is not enough.
Emit C2O.
>>8555936
remove china
its the only way
>reverse the effects
Doesn't work that way. That'd be like asking how do we unscramble an egg.
We have to minimize our emissions o slow the rate at which the warming occurs and/or find ways to make sure we continue surviving in the heated world.
Hi /sci/, it's 2am and I have a discrete maths exam tomorrow please help me with this
Can a binary relation be reflexive,symmetric,anti symmetric AND transitive at the same time ?
Plus a simple explanation of transitive relations would be greatly appreciated,I fully understand the basic if aRb and bRc then aRc but are there any special cases where a relation is transitive without this being the case ? I remember my proffessor talking about sth like that but cant remember
Thank you
>>8575685
>Can a binary relation be reflexive,symmetric,anti symmetric AND transitive at the same time ?
yes, but symmetric and antisymmetric at the same time makes it boring, this works with the usual = on whatever set of numbers you want (reals, rationals, integers...)
>Plus a simple explanation of transitive relations would be greatly appreciated
ordering relations work here (like < or >) since a< b and b<c imply a<c
>if aRb and bRc then aRc but are there any special cases where a relation is transitive without this being the case
what do you mean here, this is what transitive means
>>8575685
Yes, a relation full of elements like (x,x)
It is reflexive
It is symmetric trivially
It is anti symmetric
It is transitive trivially
What is a transitive relation? Well, a relation is transitive if and only if:
IF (a,b) is an element of the relation and (b,c) is an element of the relation then (a,c) must be an element of a relation.
Why is the relation I constructed trivially transititive? Because no such scenario even exists. There are just elements like (1,1) and (2,2) so the only statement of transitivity in the relation is:
(1,1) is in the relation and (1,1) is in the relation so (1,1) is in the relation... and it is. Trivially
>>8575697
Thank you anon
so a reflexive relation can be considered transitive ? If there were nothing but loops ?
Since Quantum Mechanics destroys the materialistic theory of a "mechanical", self-sustaining universe requiring no outside help, has Einstein's theory of relativity (along with most of his work) become completely obsolete? How can "classical physics" still exist in a universe that's so clearly defined by Quantum Physics?
Also looking for more books that show how quantum mechanics strongly points to the existence of God. Thanks.
>Also looking for more books that show how quantum mechanics strongly points to the existence of God.
Geg, how about starting with Calculus 1 and a first semester physics book on mechanics, brainlet?
>>8575505
God?what God. Quantum mechanics points not to God,but Buddhism. Check for your self
I'm not balding, but I made a jarhead haircut a month ago and now want to have longer hair.
It's there a way to make my hair grow faster?
>>8575298
drink semen
>>8575298
Cut the rest of your hair so that the shorter parts look longer.
>>8575319
truly the outside-the-box thinking /sci/ is known for!
Is this possible?
https://www.bloomberg.com/news/articles/2015-03-27/a-physicist-is-building-a-time-machine-to-reconnect-with-his-dead-father
https://www.youtube.com/watch?v=GHC8z6ULs18
https://www.youtube.com/watch?v=tgUbWkiWNCo
https://www.youtube.com/watch?v=CU8RvktogIs
https://www.youtube.com/watch?v=75ARLL9YBsk
https://www.youtube.com/watch?v=T-UTspAKPWw
https://www.youtube.com/watch?v=1EnXvS1yBIQ
https://www.youtube.com/watch?v=n8CdOKf9YV0
https://www.youtube.com/watch?v=HMv8fpmEPfs
Everything was impossible until someone made it possible.
On the side note:
>wants to reconnect with his dead father
>reconnect with his father
>a black man is literally trying to achieve one of the most desired aspects from the world of sci-fi just so he could meet his father
I know he's dead and thus it doesn't imply that the father necessarily abandoned the family and perhaps they lived as a family, but even then the joke here almost writes itself.
>>8574851
is cern going to kill him?
From all the stupid ideas ive hear.
On top of it he is black as a nigger.
Is there an upper limit to intelligence? If we take intelligence to mean the ability to recognise patterns, or use already-known patterns to describe or approximate others, etc. Does "infinite" intelligence even make sense?
Your brain is of finite size and so is the skull, therefore yes.
>>8574765
stop!
people use 10% of the brain,so if they're limits we're far from reaching them
ok this guy does not explain it very well why does everything in space spin clock wise?
>>8574612
It doesn't you mong, you are looking at it from the wrong side. Everything spins counter-clockwise.
>>8575632
if that wer true they'd be going backwards in time
Post cool math gifs
Math is never cool
>>8574847
Math is hard amirite guise xD
Im messing about with maths recently, and im wondering if i can define a function in this case.
Is there a way to define a functuon with this info, or how can i do that/how to set it up?
Working in 2d, y is f7, x is f4...or something, just repeating thr pattern there is my intention.
>>8573969
what do you mean define?
piecewise?
>>8573971
Id like to find a function that spits out:
f(1)=2
f(2)=5
f(3)=1
f(4)=1
Like reverse engineering a function i suppose. So id like to find something like f(x)=x^2-2x+1 or whatever it ends up being....my end goal is to then manipulate that function, maybe a geometric approach would be more sensible
>>8573978
OP here, im starting to find what im wanting maybe. Interpolation seems what im after.
id still appreciate tidbits of wisdom on interpolation, esp. Wrt High degree equations
The annual Cicada 3301 puzzle is coming up soon, share what you know about them.
>previous puzzle solution
>necessary skills
>theories about the groups goals
>>8573919
I'm still trying to get into cryptology, but I've been pretty busy studying mathematics, engineering and physics. So, is the Cicada scene really worth it, or do you just end up getting brainwashed into joining a cult/GCHQ/NSA (basically the same thing)?
>>8573932
from what I heard its just a challenge, nothing changes after winning
>>8573919
They will use you and seek out to find "better" solvers.
Do you think if the dinosaurs didn't go extinct, that THIS would have dominated the Earth?!
>>8573732
Maybe, anon, maybe; or maybe they are underground?
DUDE TROODON LMAO
>>8573732
It's jews' true form.
Debate thread: Did the 21st century/ third millennium begin in 2000 or 2001
>>8573718
\jewcommand{\t}[1]{\displaystyle{#1 \atop {#1~~#1}}} \t{\t{\t{\t{\t{\t{\t{\triangle}}}}}}}
>>8573718
First Century = AD1 : AD100
Second Century = AD101 : AD200
First Millennium = AD1 : AD1000
Second Millennium = AD1001 : AD2000
The current calendar is shit anyway. Why the fuck are still using the rotation of the Earth to synchronize or clocks with.
We should get rid of timezones. We should all just live in UTC. Ir "Zulu" time.
And get rid of leap days. A year should be 364 days, so a Sunday would be a Sunday every year.
We have uniform thin rigid disc rolling without slipping on a horizontal rigid plane. A force is applied to its center of mass in a direction along the motion, 30 degrees out from the disc plane. What are a good choice of generalized coordinates for this system in order to furnish Langrages equations? I was thinking (x,y) for the center of the mass of the disc and theta for the angle the central axis of the disc makes with the x-axis for its orientation, but I don't know how to proceed. Thoughts?
>>8573177
That doesn't fucking make sense. How the fuck do you apply a force to the center of mass of a disc? Unless you're applying that force normal to the flat sides of the disc, but then it would fall over. Otherwise, you're going to be applying force to the round side of the disc, but that isn't the center of mass obviously.
>>8573214
I have no idea what you are talking about, and feel offended the first person to respond didn't offer any advice about this problem. If you have a problem visualizing this situation in reality, note that the rigidness of the plane and other such cues clearly define it as a hypothetical exercise. Perhaps you could think of it as a small man or fly hovering close to the center of mass of the disc at the prescriped angle to the disc plain constantly holding a special device that attracts the central atom of the disc in his direction.
>>8573233
>hypothetical exercise
>hypothetical
So in other words a big fat fucking meme?
What's the difference between voltage and current, and why can relatively high voltage (e.g. static electricity) still be harmless?
Think of it like rape. Voltage is how strong you are. Resistance is how strong your date is, and current is whether or not you can j-jam it in. If you are both super strong shes probably just gonna karate chop you and thats that, no snu snu.
Static electricity is like one of those body builders that has huge muscles but is actually really weak, and probably a fag. So when he tries to rape some heterosexual straight male hero before the feminists get to him, hes basically useless since the guy was a construction worker and has the potent kind of muscles from a life of lifting things. So no score
To summarize static electricity is gay.
>>8572740
Voltage, current and resistance don't really exist.
Only electrons exist. And when one point of space has more/less electrons then some other point, the difference between number of electrons can be, with major simplifications, expressed in Volts (normally, batteries or current generators have constant flow of electrons which generate voltage, but connection between the amount of electrons and voltage can be expressed through C = F * V, where C is amount of electrons, F is capacity of the capacitor where the electrons are condensed, and V is voltage).
So when voltage between point A and B is 100V, you have a lot of electrons that want to go from point A to point B. How do they go there? Well, electrons, due to some obscure chemical theory of atoms, travels easiest through metals. Thats why we use wires for communication. So, if there's a metal path from point A to point B, electrons will start flowing. That's called current. However, electrons don't just "flow" through metal, they actually "hit" the other electrons in the atoms and lose some of their energy that way. That's called RESISTANCE. Different materials have different resistance, so the stronger the resistance is, the harder time electrons will have flowing from point A to point B.
TL;DR - Voltage is 'attack', Resistance is 'defense' and Current is the 'damage dealt'.
>>8572740
>why can relatively high voltage (e.g. static electricity) still be harmless?
Because W=VI
given the infinite nature of time, isn't it inevitable that the same atoms that make me up now, will once again make me up later?
Check mate, non-reincarnationists.
The infinite nature of time? No. There is a finite amount of stuff and entropy is always increasing.
>>8572628
>muh arbitrary human impositions
It's a contradiction to suggest entropy is always increasing.
>>8572627
The universe's rate of expansion is accelerating, and eventually, it will be accelerating too quickly for atoms to get together to form molecules. Each will effectively be its own little universe, as every atom will be moving away from every other at, effectively, speeds greater than the speed of light - followed eventually by the same being true for particles. So no, there is not infinite time in which the universe can support complex life.
On the other hand, the universe is a big place, and there's only so many combinations, so there might be another you living somewhere out there, right now.