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Banach spaces, function spaces, real functions, integral transforms, theory of distributions, measure theory.

6 votes
2 answers
876 views

Summation of bounded sequences

Let $b_{n,j}\in \mathbb{C}$ for each $n,j\in \mathbb{N}$. I was wondering if there is some characterization of those $b_{n,j}$ such that for all bounded sequences $s_j\in \mathbb{C}, j\in \mathbb{N}$, …