Recent content by Ice Vox

Hi, I'm asked to find and classify the singular points of a function w(z) in the differential equation: w''+z*w'+kw=0 where k is some unknown constant. The only singular point I notice is $$z=\infty$$. Is that right? I did a transformation x=1/z and examined the singular point at x=0 and...

Hey all, I was hoping to settle a debate once and for all. Suppose you've got two identical objects, in our hypothetical situation they were mini-vans. One of these is empty and the other is filled with something heavy like lead so that it is 100x the weight of the empty one. Both objects...

That's not true at all... there is in fact an infinite subset of the rationals which is compact under the standard topology... Consider the set {1, 1/2, 1/3, 1/4, ...} U {0} This set is compact because any open set around 0 contains all but a finite number points in the set. I understand that...