The Lindelöf property in Banach spaces
The Lindelöf property in Banach spaces
A topological space $(T,\tau)$ is said to be fragmented by a metric $d$ on $T$ if each non-empty subset of $T$ has non-empty relatively open subsets of arbitrarily small $d$-diameter. The basic theorem of the present paper is the following. Let $(M,\varrh