I tried using the definition of absolute convergence (similar to Cauchy Criterion), but had trouble reaching at ajbj. Any help would be greatly appreciated. Thanks
Follow Math Help Forum on Facebook and Google+
apply the Cauchy-Schwarz inequality.
I understand but how do I get rid of the square signs on sequence a and b? I can't make a connection
Here's what I just tried. but the absolute sign is around the whole summation, not just the term. Am I doing this right?
i wasn't actually talking about that kind of application, what i meant is (ohhh, may be it's the same, it's just that i'm not so familiar with norms.)
View Tag Cloud