Weak convergence of bounded disjointly supported sequences in lp
= Weak convergence of bounded disjointly supported sequences in lp
{title2=$\ell^p$}
Let $1<p<\infty$. Every norm-bounded sequence in $\ell^p$ whose terms have pairwise disjoint supports converges weakly to zero. Indeed, the average of $N$ distinct terms has norm $O(N^{1/p-1})$, so <Mazur theorem> gives weak convergence through its convex-combination criterion.