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Do you any of you know of a program on Windows where you can store an equation and use it for later use? Not Excel. Preferably you can store the equation in algebraic form and use it later on by simply inputting the variables and calculating...anyone?
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>>8387244
It is called knowing programming.
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>>8387244
>Not Excel.
Why not?
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>>8387244
Mathematica or MATLAB
Anonymous
Jacobi modular forms: 30 ans après 2016-10-02 22:33:51 Post No.8387232
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Jacobi modular forms: 30 ans après 2016-10-02 22:33:51 Post No.8387232
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Jacobi modular forms: 30 ans après
Anonymous
2016-10-02 22:33:51
Post No. 8387232
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Looking for other /sci/entists who might be interested to survey this free online course that just started, it's on Jacobi forms which are sort-of-modular, sort-of-elliptic functions: https://www.coursera.org/learn/modular-forms-jacobi
Pre-reqs are apparently knowing complex numbers and the group [math] SL_2(\mathbb{Z}) [/math], will post picture in next post
I'll be trying to work through all 12 weeks of it, just wondering if it's worthwhile to start some discussion threads on here about it or not
syllabus:
Jacobi modular forms: motivations
Jacobi modular forms: the first definition
Jacobi modular group and the second definition of Jacobi forms. Special values of Jacobi modular forms
Zeros of Jacobi forms. The Jacobi theta-series, the Dedekind eta-function and the first examples of Jacobi modular forms
The Jacobi theta-series as Jacobi modular form. The basic Jacobi modular forms
Theta-blocks, theta-quarks and the first Jacobi cusp form of weight 2
Jacobi forms in many variables and the Eichler-Zagier Jacobi forms
Jacobi forms in many variables and the splitting principle. Theta-quarks as a pull-back. Weak Jacobi forms in many variables
The Weil representation and vector valued modular forms. Jacobi forms of singular weight
Quasi-modular Eisenstein series. The automorphic correction of Jacobi forms and Taylor expansions
Modular differential operators. The graded ring of the weak Jacobi modular forms
Jacobi type forms and the generalisation of the Cohen-Kuznetsov-Zagier operator
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>To follow the course one has to know only elementary basic facts from the theory of modular forms (for example, the paragraphs 1-4 of the chapter VII of Serre’s “A Course in Arithmetic” are enough).
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final bump
as a bonus, lecture style is pretty comfy and upbeat
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sorry senpai, I'm too dumb for this shit, but I wish you the best of luck
Anonymous
Dark matter / Dark energy 2016-10-02 22:19:12 Post No.8387200
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Dark matter / Dark energy 2016-10-02 22:19:12 Post No.8387200
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What's your position in regard to these concepts, except that they do function on a mathematical standpoint?
I cannot even find a fitting picture for this thread, because dark matter is not observable, but it is still here.
Are these modern concepts a hint that we, as human beings, have hit a wall in regards to our intelligence, something that we cannot surpass?
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>>8387200
95% of what exists is unknown. It's pretty exciting.
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>>8387200
>I cannot even find a fitting picture for this thread, because dark matter is not observable, but it is still here.
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They are valid, predictive models which describe a very wide range of cosmological observations. Just because there isn't an understanding of what they are on a fundamental level doesn't mean they cannot be tested. Love it or hate it Lambda CDM is consistent with the observations we have today, there's no grounds to dismiss it currently. For that we will have to wait for better observations (on the way, pic related) or a better model. For dark energy there are other models, but Lambda is the simplest. For dark matter it's hard to imagine a theory that could replace it.
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Are engineering majors the STEM equivalent of feminists?
>using a faulty method of comparison (i.e. cherry picking), feminists come to the conclusion that women have it easier than men
>engineering majors look to their drop out rate to "prove" that their major is hardest, neglecting the fact that engineering tends to attract retards looking for quick cash after college who never end up making it to graduation
>feminists will NOT shut up about how hard women have it
>engineering majors will NOT shut up about how hard engineers have it
>feminists are extremely emotionally tied to their struggle, are overly prideful of being feminst, and are extremely combative to you if you aren't feminist
>engineering majors are extremely smug about being engineers that they forget that they can't bear that title until they graduate, they also are extremely combative if you try to argue that they don't have the hardest major
Am I onto something?
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>>8386987
>feminists refuse to suck dick due to it being an act of submission
>engineers literally cannot stop sucking dick
I don't think so, op.
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>>8387020
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>>8387020
i mean
I'd say its more that both are in denial about it, but literally can not stop sucking dicks
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Common Core puts those who are ahead or smarter and lumps them with retards who don't know shit. Pic is very related, why the fuck do I have to do this 7th grade science bullshit in fucking college?
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>>8386933
>Common Core
>College
don't feed the trolls kids
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>>8386933
American """"""education""""""" at its best.
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>common core in college
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Will interstellar travel ever be possible? Is this planet the only one we will ever have?
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>>8386904
No
Yes
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>>8386904
Yes
Meaningless question because we don't "have" this planet, we just live on it.
In elaboration, interstellar travel is possible however all feasible forms of it involve timescales which very few if any people will find satisfactory, especially if they were asked to pay for it.
As to other planets, we have already proven that with decades old technology and some creativity we have already been able to send humans to another planet and bring them back alive. It isn't implausible at all that within the next couple centuries we could establish semi-permanent bases on the Moon or Mars. Space stations will always be easier, but if humans have proven anything it's that we don't shirk exploration just because it's difficult.
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>>8386904
>Will interstellar travel ever be possible?
It will be possible but not for carbon based life. Artificial metallic life (AI nanobots) will experience this tho.
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Can someone help me with this molecule? I need to know what amino acid residue the DOTA is attached to and which end is the N-terminal and which is the C-terminal
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pls
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>>8386893
okay so i figured out the N-terminal (right side) still dont know what amino acid residue the DOTA is attached to and i now need to find the amino acid residues for the entire polypeptide
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is the first one on the right methionine? methionine is the only amino acid with sulfur but its one more carbon away from the alpha carbon than the one in this pic
does anyone have experience with magnetic refrigeration?
I don't understand why it has not become mainstream yet.
what are the downsides?
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>>8386719
your pic is confusing as shit. Explain.
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>>8386724
well left is one cooling cycle from both compression and magnetocaloric cooling
on the right is an equation of the cooling efficiency (I think)
and on the top right measurement types for warming and cooling (I think)
I'm no pro that's why I'm asking but the cooling cycle is pretty easy to understand
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Looks a bit like a stirling engine, magnetically driven.
Coleman build a cooler using this principle. Its also used by the company stirlingultracold, but that is more for laboratory use.
Downside it that its probably too good, no compressor to break down...
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Taking upper division physics lab
full lab reports due every week
how do you do this without wanting to kill yourself?
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I have a lab every other week and I want to hang myself every time I write them
t. engineer
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You don't. If you want a career in research, you might as well start planning your suicide.
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>>8386682
I enjoy writing lab reports. If you don't want to do actual physics, switch to an english major and become the next ndt.
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Thoughts on this?
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>>8386666
>have to pay to access assignments
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>>8386666
the video guy is my husbando.
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Proof that universities have become nothing more than a fucking corporation at this point.
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Is economics even a science? As far as I know no theory was been able to constantly make predictions. It seems like justification for your political ideology more than accurately modeling the world. Liberals like Keynes, conservatives like Chicago or Austrian schools, and the far left likes Marx.
I want to learn economics but it seems a lot like political posturing.
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>>8386602
Physics and chemistry were studied for literally thousands of years before the even passable local theories were developed in the late middle ages / early Renaissance. Economics is actually very young in comparison and has stronger theories than, say, alchemical theories were for chemistry.
It's very young and progressing pretty normally as far as I can tell. At this time it lacks a coherent guiding principle like the Copernican principle or the principle of mediocrity. Much of the disagreement in economics involves disagreements over such a guiding principle. This is nontrivial in science because it means that there is no underlying model in which to interpret results and therefore it is difficult to fully dismiss hypotheses since one can reinterpret results in some other base system to force consistency.
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>>8386602
It is but like you said it's really focused on politics
But you can study economics as a science but it has lots of math and theory and you have to be really neutral about politics
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>>8386602
Thomas Piketty, Paul Krugman, and Joaeph Stiglitz, probably the most well known Economists today agreed that approaching the study Economics in a rigorous scientific fashion is just ridiculous. (they were all together at some random economic summit, its on YouTube you can look it up). I dont necessarily agree with them, but their opinions should be noted.
That being said, most economic models are either based on historical events, altered models based on historical events, eye candy for mathematicians, or ways to make a quick buck for hedge fund managers.
Political affiliation usually reflects ones values and behavior and Economists assume in most of their models humans behave rationally, this is where the conflict arises.
In short, its applied Statistics.
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Dark matter is Dyson spheres. All arguments against this quickly fall apart under the slightest bit of scrutiny.
>inb4 "MUH INFRARED CAN'T POSSIBLY BE TRAPPED BECAUSE SOME BARELY CIVILISED APES HAVEN'T DONE IT YET SO SURELY NO BEINGS CAN EVER FIND A WAY"
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Popsci belongs on /x/
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If only there were some way to rebuild the firmament.
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Who /BoyceAndDiPrima/ here?
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Stewart here
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is this one any good or should i get a different one? taking my first analysis next semester
OP
If our solar system were teleported out of our galaxy, would it affect it? 2016-10-02 16:10:03 Post No.8386290
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If our solar system were teleported out of our galaxy, would it affect it? 2016-10-02 16:10:03 Post No.8386290
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If our solar system were teleported out of our galaxy, would it affect it?
OP
2016-10-02 16:10:03
Post No. 8386290
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Was reading some stuff on how the supermassive blackholes at the center of galaxies affect the stellar evolution in the galaxy. So i'm curious, hypothetically, say our entire solar system were teleported outside the galaxy. Into just a big empty space. Nothing else around, no black holes, no dark matter, ect. All the orbital values stay the same, and the sun still puts put the same amount of energy.
Could this affect life on earth? And if so, what do you think, theoretically would happen to the orbit of the rest of the planets?
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/bump
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>>8386290
It would fuck up the earth's magnetic field by reducing its rotational velocidensity.
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>>8386505
The fuck is that?
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Can your IQ change on a day to day basis?
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Don't ask IQ brainlets. They think you are born a genius or a trumplet.
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>>8386232
Not science or math related, fuck off retard.
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>>8386252
It is science. "the intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment." Fucking retard