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Feb
27
asked What's a singular differential equation?
Feb
27
comment Variable change in this partial differential equation
@Kaster Ok thanks.
Feb
27
asked Variable change in this partial differential equation
Feb
26
comment Dimension of a space
@julien ok.....
Feb
26
comment Dimension of a space
@julien That's the teqhnical name. In $\mathbb{R}^3$, the vectors $(1,0,0),(0,1,0),(0,0,1),(1,1,0)$ generate the space, but they're not "our" minimal basis because you can remove one of the vector and still have a basis.
Feb
26
comment Dimension of a space
Where can I see a proof of $c^{\aleph_0}=c$?
Feb
26
comment Dimension of a space
@julien It maybe a mistraslation from spanish, I translated it literally and probably the english word is different: it's a base that generates the full space, but whose members are linearly independent.
Feb
26
revised Dimension of a space
deleted 9 characters in body
Feb
26
comment Dimension of a space
@TobiasKildetoft That was actually added by me under complete ignorance. I deleted it.
Feb
26
comment Dimension of a space
@TobiasKildetoft Could you please develop that answer. I'm very interested in it. I just don't get that equality.
Feb
26
asked Dimension of a space
Feb
26
comment Linear Algebra Linear Independence
@JacobBlack So what's your point?
Feb
25
comment Differential Equation Setup for an RLC Circuit
If you're doubt is about the physical analysis to get to the right equation, you may get better help in physics.SE than here. If you're question is about solving that equation, the this is the place, but it looks like the first one.
Feb
25
answered Linear Algebra Linear Independence
Feb
25
comment Scalar triple product - why equivalent to determinant?
@JohnSmith Glad I helped!
Feb
25
answered Scalar triple product - why equivalent to determinant?
Feb
24
comment Why is the area under a curve the integral?
That was awesome!
Feb
24
answered Making up for wasted high school years - where should I begin?
Feb
23
comment Show that this entire function is polynomial.
@GitGud Yes thanks.
Feb
23
comment Show that this entire function is polynomial.
If a set of points is bounded and discrete, can you then conclude is finite? Any sequence that converges is bounded and discrete, and infinite, like $\sum_0^\infty \frac{1}{2^k}$