On some locally convex FK spaces

We provide necessary and/or sufficient conditions on vector spaces $V$ of real sequences to be a Fréchet space such that each coordinate map is continuous, that is, to be a locally convex FK space. In particular, we show that if $c_{00}(\mathcal{I})\subseteq V\subseteq \ell_\infty(\mathcal{I})$ for some ideal $\mathcal{I}$ on $ω$, then $V$ is a locally convex FK space if and only if there exists an infinite set $S\subseteq ω$ for which every infinite subset does not belong to $\mathcal{I}$.

No reviews yet.

No comments yet.