Form equivalence class Howard-Rubin Number: 14
Statement: If \((E_i)_{i\in I}\) is a family of sets and \((F_i)_{i\in I}\) is a family such that for each \(i\), \(F_i\) is a filterin \(\Cal P(E_i)\), then there is a family \((U_i)_{i\in I}\) such that foreach \(i\in I\), \(U_i\) is an ultrafilter in \(\Cal P(E_i)\) containing \(F_i\).Morillon [1985], \cite{1988} and Note 71.
Howard-Rubin number: 14 BX
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