Recent content by antiņš

http://www.sitmo.com/latex/

I'm just a student, but for my lab reports I use http://www.r-project.org/" . R is used by statisticians in world (and my university too), I always can ask someone for help. R makes beuatiful graphics, and the best — R isn't just statistical application, it's programming language too, so you can...

Relax, new math exam is too expensive for Latvia.

Of course, x_n=(1, \frac{1}{2}, ... , \frac{1}{\sqrt{n}}) is what I'm looking for. And this sequence is square summable because x_n is finite. Thanks! ^_^

First, I'm sorry for my bad english. Homework Statement I need to disprove: (x_n) \in \ell^2 is a Cauchy sequence, if \displaystyle \lim_{x \to \infty} d(x_n, x_{n+1})=0. Homework Equations Ok, sequence is Cauchy sequence if \exists n_0 \; \forall p,q>0 \; d(x_p,x_q) \rightarrow 0...