>>40063666
>Eh, maybe a little. I don't mind waiting a little between replies, it
>I read Moenninghoff's Metrik a while ago and it'd recommend it, it's a nice and short read.
Oh my God I haven't held a Reclam book in my hands for years! I might get it some time, thank you.
>Huh, I see. I understand the Jacobian, but that still sounds like black magic to my little undergrad brain.
So the short version is you can think of a total derivative as a Jacobian without a coordinate system specified. So dL is just a shorthand for a Jacobian of the Lagrangian in some coordinate system/parametrization of your choosing (angles and distances are just one choice after all). I have deleted SO many words in this section, oh god.. I could give you a highschool-level derivation of Euler Lagrange I could write up off the cuff if you wanted, but 4chan would be a suboptimal medium for this sadly.
>I would have just conjectured pic related and worked with that lololol.
Also, unless I am misreading, that is exactly true, since EL must be satisfied for all coordinates at once. It's less a => and more both following from EL itself.
>I guess enrolling in university again will give me an alibi, CV-wise.
100%. I'm sorry you have to deal with so much bs however, I wish I knew how to help you to those wonderful experiences I made in a straightforward, actionable way.
>I'll soon be an alumni at pretty much every university in Germany.
Oh, even crossing Bundesland borders?
>>40064216
I think I get what you mean, and I tend to agree. Although it is important to sometimes, to a finite extent, grant some social forward payment. Some people take a bit to open up, or will take some time to be comfortable reciprocating. But that is not what you mean at all, I know, just adding nuance.
>>40064739
It was as good as it could have been. Most of my immediate family is dead, so the funeral was a party of 3, me included.