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We have the following indirect implication of form equivalence classes:

60 \(\Rightarrow\) 213 given by the following sequence of implications, with a reference to its direct proof:

Implication	Reference
60 \(\Rightarrow\) 213	clear

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

Howard-Rubin Number	Statement
60:	\(C(\infty,WO)\): Every set of non-empty, well orderable sets has a choice function. Moore, G. [1982], p 125.
213:	\(C(\infty,\aleph_{1})\): If \((\forall y\in X)(|y| = \aleph_{1})\) then \(X\) has a choice function.

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