Hellou
I'm havin real troubles with this one:
Proof that if then
can anyone help me?
thx
We must assume, of course, that is either positive or positive almost always, otherwise the result is false (for example, and , or take any sequence which converges to zero and has infinite number of zeroes among its elements... )
Let us take any (we can assume positiviness since the sequence is positive).
No , since we get that for there exists and this means, according to the definition, that
Tonio