Re: Series

In article
<12318708.1222361908437.JavaMail.jakarta@xxxxxxxxxxxxxxxxxxxxxx>, Maury
Barbato <mauriziobarbato@xxxxxxxx> wrote:

Hello,
let {a_n} be a sequence of real numbers which is not
in l_2. Is there sum element {x_n} of l_2 such that
sum_{n=0 to inf} (a_n)*(x_n} diverges?

yes


Thank you very much for your attention.
My Best Regards,
Maury

--
G. A. Edgar http://www.math.ohio-state.edu/~edgar/
.