We have the following indirect implication of form equivalence classes:
| Implication | Reference |
|---|---|
| 164 \(\Rightarrow\) 91 |
Dedekind-Endlichkeit und Wohlordenbarkeit, Brunner, N. 1982a, Monatsh. Math. |
| 91 \(\Rightarrow\) 79 | clear |
| 79 \(\Rightarrow\) 94 | clear |
Here are the links and statements of the form equivalence classes referenced above:
| Howard-Rubin Number | Statement |
|---|---|
| 164: | Every non-well-orderable set has an infinite subset with a Dedekind finite power set. |
| 91: | \(PW\): The power set of a well ordered set can be well ordered. |
| 79: | \({\Bbb R}\) can be well ordered. Hilbert [1900], p 263. |
| 94: | \(C(\aleph_{0},\infty,{\Bbb R})\): Every denumerable family of non-empty sets of reals has a choice function. Jech [1973b], p 148 prob 10.1. |
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