We have the following indirect implication of form equivalence classes:

159 \(\Rightarrow\) 159
given by the following sequence of implications, with a reference to its direct proof:

Implication Reference
159 \(\Rightarrow\) 159

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

Howard-Rubin Number Statement
159:

The regular cardinals are cofinal in the class of ordinals.

159:

The regular cardinals are cofinal in the class of ordinals.

Comment:

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