Form equivalence class Howard-Rubin Number: 8
Statement: \(DP\): If \((X,T)\) is a topological space having acountable \(\pi\)-base, then for every family \(D=\{D_i: i\in\omega\}\) ofdense open sets of \(X\), there is a countable dense set \(S\subseteq X\) suchthat for all \(i\in\omega\) and for all but finitely many \(s\in S\),\(s\in D_i\). Keremedis [1998b] and Note 132.
Howard-Rubin number: 8 N
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