Need help. Im a student.
Is every serie that alternates between + and - and has a limit 0 convergent?
I cant think of one that isnt?
Then probably it is. Try to proof it.
>>8004152
Im an engineering student not maths. Not exactly sure how I would go about proofing it.
>>8004146
yes
https://en.wikipedia.org/wiki/Alternating_series_test
Would this be possible ?http://arstechnica.com/science/2016/04/breakthrough-starshot-announces-plans-to-send-ship-to-alpha-centauri/
>>8000264
Sure its possible, it will just take fucking ages
>Arstechnica
http://mobile.nytimes.com/2016/04/13/science/alpha-centauri-breakthrough-starshot-yuri-milner-stephen-hawking.html
>>8000288
I made a funny...
Ok so I know at the beginning of the forming of our solar system there was a bunch of spinning dust and planets formed in this way around the sun... Is that where the planet gets it's centrifugal force from though?
In my head it doesn't make much sense, a bunch of spinning dust forming into a ball could keep it's force like that,
because newton's first law.
PART 2 OF MY QUESTION
Wiki up some Kepler's laws.
Also "conservation of angular momentum."
> The fact that we haven't seen any time travelers means humans go extinct before developing time travel.
> Artificial intelligence will one day be advanced enough to threaten humanity, but then someone unplugs it.
> It will be proven that P != NP.
> There are other civilizations in the universe, but Earth is the only one in the Milky Way.
>>8003095
> The fact that we haven't seen any time travelers means humans go extinct before developing time travel.
What about if time travel is just not possible?
>>8003095
time travel doesn't exist
AI will always be under control barring small breaches, something like what happened with nuclear bombs. enough power to destroy everything but it's politics at play
the P = NP problem really has no practical relevance
the last one is just dumb speculation
>>8003103
Idk, it seems like we don't know for sure yet.
My mom is a science teacher at a school for bad kids (drug addicts, kids trying to get a GED, kids who have been arrested, etc.). She wanted me to make a special periodic chart for her class, since most of her students are dumb as rocks.
What does /sci/ think?
>>8003026
There is no memes, drug references, or general twitter faggotry. Plus it's not colorful enough to catch the average retard's attention.
0/10 apply yourself.
Seems like the regular public school periodic table
>>8003026
You got Non-Metals and Noble Gases mixed up
So, I live in a shitty 3rd world country so I don't have many options, in the local public uni they have this "Computer Engineering" career, now, I want to know if it really can be classified as such, or if this is closer to Computer Science (in which I'm not interested), mostly in the first 6 semesters.
Pic related its roughly translated from spanish.
I like low level stuff, not developing apps and general software management for commercial software and all that boring crap CS majors do.
In the same uni I can do EE or Electronical Engineering at a technical school, from the outside both look quite interesting choices, nevertheless I would like to do CE, but only if its really that I'm getting into.
I can't afford private so don't bother (and private its shit here anyway, its even lower level, but easier for the lazy richfags).
>>8002072
OP here, worth mentioning there is not a CS career here (at least not in public uni), that's why it raises doubt for me, this "CE" its all there is.
> be me
> take comp. arquitecture
> take economy
> programing 101 (pascal)
> become certified computer analist
Not computer engineering, no circuits, waves & fundamentals of modern physics, no digital signal processing, no random signal variables, not even one lab? those are cores that are missing, definitely not Computer Engineering, maybe computer engineering technologies or software engineering.
>ME degree
>about to graduate
>three minors
>no one cares about them
Was there even a point to getting minors? Why do they exist, /undergrad/?
To specify, my minors were in chemistry, math, and physics. I've done so much chemistry I'm only actually two classes short of having a second bachelors in it.
>>8001867
the point of a minor is so that you can take a few extra classes that you find interesting outside the scope of your actual program. If you did it to polish up your resume, then I'm sorry, but you wasted a lot of time. You can maybe talk about it during interviews for your very first job, but after that, literally nobody will care. It's a talking point at dinner parties.
Bumparoo
OK, which one of you autistic fucks is this?
>>8001574
Not me.
Based me
Fuck maths
Britain best state
[math] |A| \geq |B| \land |B| \geq |A| \implies |A|=|B| [/math]
[math]2^{|A|} > |A| [/math]
I've received two offers.
Company A is a start up. Their tools are used in academic research. 6 years old now and still making profit.
>Wants me to design their on in house microcontroller
>lots of programming and hardware
>free reign lots of room to grow, 6 years old
>I'd be the only guy with an iron ring (meaning I'm the only engineer in the company) which is a pro and con.
>pro: I figure out my shit on my own and it's real challenge
>con: Senior engineering staff is valuable for a reason
Company B, Automotive engineering firm recession proof.
>work directly with hardware
>low level programming
>get to travel to china to prototype at their plants
>surrounded by other engineers who can mentor me
Which do I choose? I honestly do not give a shit about the money. I'm a new grad with two work terms.
>>8001546
Company B. More secure, you won't be the only guy doing everything, start-ups are full of neckbeards and you get to fuck gook girls in china.
>>8001571
Wew
How long has it been since you started working?
>>8001575
I run a startup
Startups are bad places to work trust me. I will be a lazy disorganized neckbeard, I will have no plans for the future, my projects will become increasingly zany, I will expect you to solve everything, you will run away just like my CS guy did.
Is it cool to like UFOs yet?
Now that everyone and their mother has a camera on their phone there should be some good sources but is the taboo stopping people from talking about it?
>inb4 /x/ is that way
It's not taboo or anything. But people are tired of seeing that shaky lowres amateur 'lights_at_night_which_vaguely_looks_like_a_helicopter.mp4' videos
>>8001291
I'm sure someone will take a good quality HD photo of UFOs very soon, just keep waiting.
Reading a book called UFOs: Generals, Pilots, and Government Officials Go on the Record
by Leslie Kean.
Interesting story and concept where they go full hard science and only discuss those few sightings that ended up not being able to be explained as earth technology.
Hi, I'm just watching a lecture series and the professor writes on the board the following:
>Any axiomatic system that is powerful enough to encode the elementary arithmetic of natural numbers is either inconsistent or contains a proposition that can neither be proven nor disproven.
We'd be inclined to think that it is inconsistent because we want every axiom and proposition to be true in the axiomatic system if it weren't for the fact that proposition logic itself is consistent.
Since we know that propositional logic is consistent, meaning that you cannot prove every statement (eg. ((P and not P is false) is true)), wouldn't that make you inclined to go back and say that maybe the ex falso quodlibet law of logical systems might be a bit of a stretch in saying that the entirety of a consistent contradictory statement is true should remain in practice despite it not being provable?
If you cannot prove a premise, why would you even use it as a postulate/premise in a logical system?
>>8000910
I guess another way of reaching out to you guys is by asking:
Why would it not suffice to just say (P and not P "implies" false), rather than summarizing the entire statement as true and using that as a proposition?
I don't really understand your sentences, because they are unecessarily long, you use "it" without disclaimer, syrange quotation marks, I don't know if False and True is supposed to be part of your formal language, if you really want to ask about propositional and not predicate logic or how your question relates to incompletness.
Let me just point out that
1. there is paraconsostent logic (google it) which weakens explosion
2. an inconsistency such as 0=1 in arithmetic fucks you in a very practical way as 0+n=n
3. When in comes to classically interpreted propositions, intuitionistic (=constructive and therefore pretty well justified) logic has the same proof strengeth as classical logic (that had the axiom/law of excluded middle).
Why should I be inclined to think it's incosistent? It's simply that you introduce the axioms in a non secure way so you can't be sure you don't demonstrate the false. I don'd see what you're trying to say.
/sci/ I come to you for advice, pic unrelated
Engineering student here and yes I realize where I'm posting
What are some thermodynamics books?
To make the thread more general after this initial question, what are some good engineering books?
Plan on diving into some thermo over the coming summer break and was looking for some good books.
All opinions welcome
sacred geometry, platonic solids, flower of life, the golden mean, phi....spirit and math do come together.
https://www.youtube.com/playlist?list=PLKhPbfcY-K3Jd24MubLxpCuvqCRJ1GLqn&nohtml5=False
Gene: CCR5Δ32, an obvious one relating to HIV resistance with some minimal downsides known.
https://www.technologyreview.com/s/601235/chinese-researchers-experiment-with-making-hiv-proof-embryos/
Chinese fertility doctors have tried to make HIV-proof human embryos, but the experiments ended in a bust. The new report is the second time researchers in China revealed that they had a go at making genetically modified human embryos.
http://www.ncbi.nlm.nih.gov/pubmed/27052831
Introducing precise genetic modifications into human 3PN embryos by CRISPR/Cas-mediated genome editing.
By co-injecting Cas9 mRNA, gRNAs, and donor DNA, we successfully introduced the naturally occurring CCR5Δ32 allele into early human 3PN embryos. In the embryos containing the engineered CCR5Δ32 allele, however, the other alleles at the same locus could not be fully controlled because they either remained wild type or contained indel mutations.
CONCLUSIONS:
This work has implications for the development of therapeutic treatments of genetic disorders, and it demonstrates that significant technical issues remain to be addressed. We advocate preventing any application of genome editing on the human germline until after a rigorous and thorough evaluation and discussion are undertaken by the global research and ethics communities.
Korea can make clones, they just don't because ethics
>>8000282
niggas need to put some hip genes in this bitch good lord
>>8000282
>Chinese fertility doctors have tried to make HIV-proof human embryos
what a useless genetic modification...
I realize that burger is to /sci/ as national socialism is to /pol/, so maybe it's impossible to have a rational
>in b4 heuheuheu rational
discussion about this: Burger claims that [math]\pi[/math] is a "meta-number". What does he mean by this? How can he escape the variety of provably irrational constants that are "unreasonably effective"?
He's an idiot.
>>7999999
what a waste
At least Wildberger is confirmed as an idiot
If you look into his rational geometry book, he defines and uses pi (defined as the value of one of the equivalent definite integrals) and speaks about how we can compute an essentially arbitrary high (but fixed) number of digits of its decimal expansion.
How does one get from the left part of this equation to the center one? I don't get it because I'm a retard.
integration by parts?
that's the first thing I'd try and check
>>7999899
are you gonna say we should plug the infinitesimals ds and dt together and form v,
or is there a simpler derivation that's more rigorous?
![dplMD7t[1].jpg](https://i.imgur.com/3HJwks4.jpg "dplMD7t[1]")
![1905[1].jpg](https://i.imgur.com/OnkA67f.jpg "1905[1]"){kind=small}