We have the following indirect implication of form equivalence classes:

414 \(\Rightarrow\) 414
given by the following sequence of implications, with a reference to its direct proof:

Implication Reference
414 \(\Rightarrow\) 414

Here are the links and statements of the form equivalence classes referenced above:

Howard-Rubin Number Statement
414:

Every \(\cal W\)-frame is a \(\cal D\)-frame.  \ac{Ern\'e} \cite{2000}

414:

Every \(\cal W\)-frame is a \(\cal D\)-frame.  \ac{Ern\'e} \cite{2000}

Comment:

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