We have the following indirect implication of form equivalence classes:

1 \(\Rightarrow\) 247
given by the following sequence of implications, with a reference to its direct proof:

Implication Reference
1 \(\Rightarrow\) 247

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

Howard-Rubin Number Statement
1:

\(C(\infty,\infty)\):  The Axiom of Choice: Every  set  of  non-empty sets has a choice function.

247:

Every atomless Boolean algebra is Dedekind infinite.  \ac{Plotkin} \cite{1976}, notes 86 and 94.

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