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We have the following indirect implication of form equivalence classes:

90 \(\Rightarrow\) 130 given by the following sequence of implications, with a reference to its direct proof:

Implication	Reference
90 \(\Rightarrow\) 91	The Axiom of Choice, Jech, 1973b, page 133
91 \(\Rightarrow\) 130	Equivalents of the Axiom of Choice II, Rubin, 1985, theorem 5.7

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

Howard-Rubin Number	Statement
90:	\(LW\):  Every linearly ordered set can be well ordered. Jech [1973b], p 133.
91:	\(PW\):  The power set of a well ordered set can be well ordered.
130:	\({\cal P}(\Bbb R)\) is well orderable.

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