We have the following indirect implication of form equivalence classes:

222 \(\Rightarrow\) 223
given by the following sequence of implications, with a reference to its direct proof:

Implication Reference
222 \(\Rightarrow\) 223 clear

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

Howard-Rubin Number Statement
222:

There is a non-principal measure on \(\cal P(\omega)\).

223:

There is an infinite set \(X\) and a non-principal measure on \(\cal P(X)\).

Comment:

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