Implications

We have the following indirect implication of form equivalence classes:

221 \(\Rightarrow\) 142
given by the following sequence of implications, with a reference to its direct proof:

Implication Reference
221 \(\Rightarrow\) 222 clear
222 \(\Rightarrow\) 142 The strength of the Hahn-Banach theorem, Pincus, D. 1972c, Lecture Notes in Mathematics

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

Howard-Rubin Number Statement
221:

For all infinite \(X\), there is a non-principal measure on \(\cal P(X)\).

222:

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

142:

\(\neg  PB\):  There is a set of reals without the property of Baire.  Jech [1973b], p. 7.

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