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"/sci/ - Science & Math" is 4chan's board for the discussion of science and math.
Last time on 'es-ef-gee': >>11209698
Most on 4chan insist on phrenology, claiming IQ measures genetic intelligence (I guess the Irish must have genetically enhanced themselves at the same time they developed their country and education systems when they jumped up 13 points in IQ). lol
It appears most on 4chan are incredibly angry and insecure, lashing out at people and calling them Jews or something else whenever someone is educating them.
Why are 4chan kids so uneducated and so unwilling to learn?
Major in biological sciences here.
previous:
>>11187573
Basically, women pregnant with male zygotes may develop antibodies to their foreign male genes (Y chromosomal) and this could lead to methylation (suppression) of masculine genes in subsequent males.
The sample size was small but how isn't this type of thing researched more? Getting an abortion may not even prevent this effect.
Why and how does this entanglement happen? How come this only happens on the quantum level?
The question is are the entropy levels of both the left and right hemisphere equal? I highly doubt so because the right brain is known for divergent thinking, which makes me assume that the right brain would have a higher level of entropy than the left brain.
Aerospace Edition
What's your toughest final coming up?
http://www.kurims.kyoto-u.ac.jp/~mo
>2019-12-10
>(Papers) Revised version (list of revisions):
>The Mathematics of Mutually Alien Copies: from Gaussian Integrals to Inter-universal Teichmuller Theory.
http://www.kurims.kyoto-u.ac.jp/~mo
>Reformatted the manuscript using the style file for the Bessatsu series
>Slightly reworded Step 8 of \S 1.6
>Added references to \S 3.10, (ii); \S 3.11, (iv), (v), to the Introduction
>Updated the Acknowledgements
>In \S 3.7, (ii), 10^{est}, 11^{est}, added references to [IUTchIII], Remark 3.9.5
>In \S 3.10, (ii), added a reference to [IUTchII], Definition 4.8, (viii)
>Slightly modified the final portion of \S 3.10, (vi)
>Added items "(iv)", "(v)" to \S 3.11
>Slightly reworded the statement at the end of the Bibliography concerning preprints
>well funded, publishing papers a year in
>start using theoretical chemistry heavily and read some books + take some courses
>realize I will never learn enough math/coding to understand this stuff properly in my current PhD. feels bad.
Should I finish my PhD and try to learn by self-teaching afterwards? drop out and study physics for a year or two, but lose all my funding? Try to switch into a theory PhD without enough skills and hope I can float (but probably sink)?
![yareta-9[6]](https://i.4cdn.org/sci/1576180694856s.jpg)
This flower lives over 3000 years
>get colder
what did science mean by this?
>know nothing about electromagnetics or circuit design
Any1 know this feel?
>teaching algebra-based high school introductory physics course
>going over position, velocity, and acceleration graphs
>student points out that acceleration is the second derivative of position
>I realize at this moment that he is a powerful intellectual force not to be reckoned with
>mfw
For those that do not know what it is:
A paper with some arguements for it - https://www.biorxiv.org/content/10.
In short, VE states that the eukaryotic nucleus is of viral origin - specifically, of giant virus origin. Giant viruses like Mimivirus (pic related) are very large dsDNA viruses that contain a membrane inside their capsids, inside of which DNA, mRNA and proteins are stored.
During their reproductive cycle, the inner membrane with genetic material is released from the capsid inside their hosts and a Viral Factory forms - a cell compartment in which DNA is transcripted to capped mRNA (like in Eukaryotes) which is then transported to the cytosol where it is translated by host ribosomes.
According to the theory, a giant virus with a lysogenic cycle infected an Archeon. It replicated, releasing virions outside the host, free to infect other cells. When it encountered another cell that was infected, but with a different enough strain of giant virus, it could enter the cell and fuse with the other virus (viral factory, really). Then, the DNA of both viruses would get sorted and separated mitosis-like thanks to viral DNA repair mechanisms. After billions of years, the ability to release virions was lost and host DNA was degraded and only the DNA protected by the nucleus remained.
Some things to consider:
The giant viruses contain multiple double stranded DNA that isn't circular like in Prokaryotes.
There is evidence that some of them use tubulin to position the viral factory in the middle of the cell.
They seperate transcription from translation like Eukaryotes.
They contain telomere-like sequences on the ends of their DNA.
Fellow gentleman *ahem*
Can i have your attention please
This is what i have to say and if you know the answer then do so provide it Good sir
When you looketh upon the Haplogroup of the Y Chromozone
You will Either See A; - I1, I2, N or many other kinds of Haplogroups
Tell me Good sir how do you tell the difference upon the Chromozone
How does A I1 Chromozone differ from a I2 Chromozone
Send microscopic photos
Send Explanations
Stick to the topic
Thank you
Pic Unrelated
What does /sci/ think of the brains behind Boris Johnson and his blog post on IQ?
>still didn't become the worldwide recognized genius that you always daydreamt about
https://www.youtube.com/watch?v=st_
https://www.youtube.com/watch?v=Nrb
Also how are the continents gonna look? I know the basics like the Mediterranean becoming mountains and east Africa splitting off, but I'm curious about more nuance things.
Will the Atlantic keep spreading and the pacific finally close or will the mid-atlantic eventually collapse? What has changed in our understanding since all the future continent models I see are from over a decade ago.
![RTXHD8G-jeanne-calment-1120[1]](https://i.4cdn.org/sci/1576061511870s.jpg)
touhous need their sleep edition
angry about motherfucking cocksucking residency situation in my shithole country edition
don’t care about pasta bite me
The Space Force Will Become the Sixth Branch of the U.S. Military
https://news.yahoo.com/space-force-
>on to bigger and better things
solution: infinity*0=0?
![Predators.2010.1080p.BluRay.x264-[YTS.AM].mp4_snapshot_00.24.47_[2019.12.11_18.43.08]](https://i.4cdn.org/sci/1576121551096s.jpg)
YOU'RE ALL GONNA BE WRONG IF YOU DOUBT ME
>"and then he chased down some guy to a house"
how can i cure it?
What y'all think, will post supposed answer.
How do you plan on surviving the great 21st century famine/ecopocalypse?
https://www.forbes.com/sites/starts
This is not an pop-sci article, you newfags. It's written by a physicist.
Why do laymen resist this idea so much? Is it because they're ignorant of the current scientific zeitgeist?
So not too long ago I had an
Abdomen and Pelvic CT scan.
Now I'm worried about radiation exposure and things like overall cancer risk increasing given that CT machines give off significant amounts if ionizing radiation.
In short,
Is this a legit fear from things like CT scans or am I just that much of a hypochondriac?
Please be kind, it's been one hell of a shitty week...
Thank you for any serious advice, education, or experiences on the matter in advance guys
When I hear someone like jim willie talking, he makes me feel dumb, and I guess his IQ is 150-160.
Anyone on my same position?
It bothers me that I will never be as smart as jim willie.
I feel average when he talks on his youtube videos.
https://twitter.com/AmericanDiaries
Its a completely sincere question. If you don't answer it sincerely you're betraying all your principles and discrediting yourself.
I'm not gonna make it, am I?
>learned to code using game engines
>want to do some AI stuff on tensorflow
>realize I may need advanced PHD CS degree
>scared as fuck of math
>start to watch the youtube conferences
>most of the time is literal import python libraries and do five lines of pytorch and tensorflow, free.ai libraries
>tfw people get paid 500k to do this
it'd probably look like you were in the midst of a big spinning disk and everything outside the black hole's disc would look like it was moving away from you because the the space that you're in would be compressing.
the zeppelin will be coated with teflon to ensure it doesn't get rekt by acid of course.
But WHY is 2+2=4? Why can't 2+2=5? Or 6?
The truth is that 2+2 can infact equal 5. The problem is that humans are incapable of realizing that 2+2=4 is something that we made up. Humans unfortunately take this for granted.
This has significant implications in math. Since most math is based on and uses arithmetic, my argument has literally disassembled math.
Math is fake
Neurobiological effects of exercise disappear from inhaling polluted air
https://www.ncbi.nlm.nih.gov/pubmed
https://www.ncbi.nlm.nih.gov/pubmed
anything. how can I find researchers willing to attempt to treat my condition? or at least talk to me.
Given bacteria's growth is literally exponential and how easy are to feed, it could easily counter the balance.
At this point I'm genuinely starting to believe the climate change is just a hoax to further annoy and demoralize western nations.
Given how little the community annoy hyper-polluting and overpopulated Asian countries like India, China, Indonesia, etc. And how they just preach their garbage to the braindead normie population which has an attention span of 5 seconds.
https://en.wikipedia.org/wiki/Aethe
https://en.wikipedia.org/wiki/Fifth
most popular age is 18, but it would obviously be lower if under 18's were allowed
On one hand, it seems like with initial position and velocities and Newton's laws, the system is fully defined, and so only a very small amount of information is needed to fully describe the evolution of the system.
On the other hand, there is no closed form solution, and so to generally obtain the configuration at some later point in time requires you to compute the configuration of all the inbetween times; there is no shortcut to instantly get the configuration at any time.
Perhaps our perception of time exists because the universe has to "crunch the numbers" so to speak to fully describe itself.
>D. radiodurans is capable of withstanding an acute dose of 5,000 grays (Gy), or 500,000 rad, of ionizing radiation with almost no loss of viability, and an acute dose of 15,000 Gy with 37% viability.[11][12][13] A dose of 5,000 Gy is estimated to introduce several hundred double-strand breaks (DSBs) into the organism's DNA (~0.005 DSB/Gy/Mbp (haploid genome)). For comparison, a chest X-ray or Apollo mission involves about 1 mGy, 5 Gy can kill a human, 200-800 Gy will kill E. coli, and over 4,000 Gy will kill the radiation-resistant tardigrade.
https://en.m.wikipedia.org/wiki/Dei
Is there anything even tougher than this bacterium?
>When we first met, he was pure bottom and couldn’t get enough of me inside him, but as time went on, the sensation diminished and anal play just wasn’t successful. Both he and I couldn’t reach orgasm, let alone even sometimes keep our erections. It was like he had become too loose
>Dr. Goldstein performed a same-day procedure with removal and tightening of both the muscle and overlying skin, and some superficial resurfacing to complement the symmetry. It definitely took some time to heal and then re-dilating to accept toys and of course, me. But it was totally worth it — it’s now tight, puckered, and winks when we want.
What’s the most efficient way to get better
import matplotlib.pyplot as plt
m=50
t=np.zeros((m,m))
print(t)
for u in range(0,m):
for k in range(1,m):
if(u%k%2):
for l in range(1,m):
if(not l%2 - 1):
t[(u,l-1)]=k%l
plt.plot(t)
plt.show()
Lets say you can increase your intelligence by changing your brains structure, lets call it eva
You can cooperate with society and achieve a decent level of eva or you can put somebody in a one hundred billion year torture situation and achieve a higher level of eva lets say 50% higher eva than the soc wide value.
Would you put somebody in a one hundred billion year torture situation to achieve higher eva?
Is caffeine giving me an edge or is it all in my mind? I *feel* more productive with use of caffeine but i'm not sure if this is an illusion or reality.
also, i have no data to support my claim, that is why i'm unsure if caffeine is actually productivity boosting or illusion.
>Only reason my grade is still decent is because I've got a knack for programming so the assignments have been EZ
>failed every quiz and midterm so far
This class is important as fuck but the teachers style is just not working for me. He only ever talks about examples. I don't know how to solve recurrences or determine space/time complexity of anything more complicated than recursive sorting algorithms. I'm not worried about the test because the curve is so lenient that no matter how I score I keep a B, but It's really frustrating not understanding anything. Does anybody have any decent resources for learning algorithms on your own?
Astrophotography/Space thread.
You can score additional points for keeping it molecular/microbiology only.
Facts
(i) To prevent any military invasions.
(ii) To act as deterrence against any hostile threats.
(iii) To be used as a means of intimidation, pressure, fear and/or influence against others.
(iv) To obtain/secure a permanent seat at the UN Security Council.
(v) To impose the use of a created currency by the owner of that particular superweapon as the new Reserve Currency.
After putting several dozen sets through graphing software I wrote the linear equation "y = 0.12x + 1.5", where y represents the price and x represents the total piece count of the set.
The equation works fairly well but I have come to ask for advice on how to improve this. Any feedback is welcome. Also this is not an assignment I just have autism.
https://youtu.be/dGhtLXk8nwU
I've read online than the melanin pigment is brown, theres also a yellow one but unless you are chinese...And genetically swarthy men don't need sun exposure to be brown, why the fuck would i need sun exposure if melanotan triggers my melanin production , i should be brown by default?
(i've never used melanotan, but i don't want to get scammed - no point to use this shit if i have to tan, i dont need any product to blast my skin with waves)
what did he mean by this?
![1572882563503[1]](https://i.4cdn.org/sci/1576163969299s.jpg)
ive just came up with this triangular patter loop , seems strange.
at low values of the array the function seems random
What /sci/ thinks about?
import numpy as np
import matplotlib.pyplot as plt
n=100
t=np.zeros((n,n))
print(t)
for i in range(n):
for j in range(1,n):
t[(i,j)]=(i*3-1)%j
t[(i,j-1)]=(i/2)%j
plt.plot(t)
plt.show()
![eNYee[1]](https://i.4cdn.org/sci/1575712308945s.jpg)
And if so, why aren't all langauges tonal?
Are there any other technologies that are promising?
Same for space travel
>Kinda new to computer science, studying in uni
>Love computer science
>We're kind of into the year and the compsci study program has started hosting events
>Neat! A good way to meet new people
>They also advertise a lot of workshops and they all sound like fun
>Decide to go to one
>It ended up just being a drinking party and the workshops got called off
>Genuinely upset
>Ok weird, decide to wait until the next one
>It's the exact same thing.
>Feelsbadman
I can't find any other tech related events to go to or at least ones that are nearby and/or with free admission. This sucks I hate uni
This thing is called the "cosmological horizon", and the general idea of the holographic principle suggests that everything inside the cosmological horizon is described by oscillations of this horizon. This is hard to make precise because the horizon has a finite area and growing, and so has a finite maximum entropy associated with it (which is growing), and this is paradoxical seeming, because it suggests that the Hilbert space for our universe is growing.
The number of states in a quantum mechanical system can't increase, so this leads many people to renounce the idea of string theory in our kind of universe, choosing instead to describe the dynamics in terms of the asymptotic future, where presumably the universe will vacuum decay to a supersymmetric state. This is one approach, another is to try and formulate a real theory with a finite Hilbert space. I think a possible third approach is to consider finite area horizons as somehow density-matrix like, so that they, unlike black holes, have fundamental decoherence. Nobody knows the answer, and this is the major unsolved problem of string theory today.
i m 18 now is it likely to ingite/regenerate my neurons again?
>"Two normal men volunteered to live solely on meat for one
year, which gave us an unusual opportunity of studying the
effects of this diet."
>"No clinical evidence of vitamin deficiency was noted"
>there is Vitamin C in beef
>RDI was originally 45mg due to literal guinea pig testing but been increased to 90mg due to epidemiological data
>Most whole foods have Vitamin C, 100g of brocolli has over 50mg alone
How much of a scam are these and when did you stop buying them? I guess they're only really recommended if you eat nothing but stale frozen dinners and canned food. They're just expensive gummies at this point.
type: x =
replace-all x with (1/x + x/2) 10 times
replace x with 1
copy all
paste into calc
Nothing in the manual, online, and I've pressed every button
>[Important chemical derivations / availability].
>[Legal nootropics / supplements / drugs].
>[Lab equipment {especially, "basing on the plausibility of *very cheap* iterations"}].
>[What tubing is cheap and strong enough for liquid nitrogen {and similar}].
>[Useful gases {other air derivations being argon and oxygen}].
>[A homemade compressor].
>[Relevant metals].
>[Producing and utilizing graphene].
––
>[Some aspects you're really interested in, on the most practical science and mathematics].
Have fun!
https://www.youtube.com/watch?v=vXW
Now that the dust has settled, was this really such a big deal?
The graph is connected and has no cycles or multiple edges.
Each node is either red, blue, or yellow.
A red node may have no more than 4 edges connected to it.
A blue or yellow node may have no more than 3 edges connected to it.
An edge may not directly connect a yellow node to a yellow node.
For example, g(2)=5, g(3)=15, and g(4)=57.
You are also given that g(10)=710249 and g(100)≡919747298(mod1000000007).
Find g(10000)mod1000000007.
I've come up with a few ideas, and this is realistically the best idea that I have.
Every possible graph within the constraints are trees. And using this, I've been leaning towards generating all of the isomorphs for the number of nodes N and then using each isomorph and coloring it validly, hashing that coloring, and then collecting the total number of unique hashes.
Am I going in the correct direction? Is it simpler than this?
I feel like I'm missing a group or some sort of lemma that would make this problem at lot easier to approach. I've been thinking about this for days, and 50+ Wikipedia about astronomically specific types of graph coloring. I need another perspective. Cheers, /sci/
Of course one of those can shoot you in the face, but the question is in regard to overall medical competence.
After the past few years of dicking around I've found out I really like just learning things - except I'm really bad at it now. I can't figure out a concept I learned a couple hours ago and apply it (it was programming and doing an exercise for it and I forgot half of it). It wasn't like that before though. That's something I could have done! I also forget things a lot more often now. Then obviously I can't recognize/remember when to use said things and I can't reason my way through them.
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