@0celo7 Because we try to be consistent and fair we sometimes want to talk things over with other moderators. That can take time depending on what the other folks are doing in "real" life.
I don't moderate while I'm teaching class. Nor while I am grading exams or writing supplementary class materials. And so on...
Apparently CTCs on the flat torus with identifications $(x,t) = (x + a_x,t) = (x,t+a_t)$ join up with themselves if for a vector $\alpha \partial_t + \beta \partial_x$, you have $n \frac{\beta}{\alpha} \frac{a_x}{a_t}$ an integer
Also, the written comments are the only place where you can actually provide useful feedback. To be taken seriously, write as objectively as possible, use complete sentences, and provided concrete complaints and suggested changes.
And be aware that the instructor probably has reasons for the things he or she does, so just saying that you don't like [activity A] or [requirement B] isn't going to get you anywhere.
@0celo7 That said, a course that is garbage for you might well be pitched just write for the average student taking it. So you may not get much traction with that.
@0celo7 Vector spaces, linear maps on vector space (both abstract and as matrices), rank-nullity/isomorphism theorems, eigenvalues, characteristic polynomial/trace/determinant, inner products, spectral theorem (finite-dimensional, ofc)
Donnno? What "linear" means in this context. Vector spaces. Linear dependence and independence. Basises (never known the right spelling for the plural of basis, BTW). Eigenproblems. Other stuff that @ACuriousMind mentioned.
I didn't get most of that from my course on linear algebra. I got it from a course taught in the comp sci department that covered rings and some abstract algebra (thought I never understood what purpose that stuff had to the CS majors...).
