We have the following indirect implication of form equivalence classes:
| Implication | Reference |
|---|---|
| 16 \(\Rightarrow\) 13 | Zermelo's Axiom of Choice, Moore, [1982] |
Here are the links and statements of the form equivalence classes referenced above:
| Howard-Rubin Number | Statement |
|---|---|
| 16: | \(C(\aleph_{0},\le 2^{\aleph_{0}})\): Every denumerable collection of non-empty sets each with power \(\le 2^{\aleph_{0}}\) has a choice function. |
| 13: | Every Dedekind finite subset of \({\Bbb R}\) is finite. |
Comment: