We have the following indirect implication of form equivalence classes:
| Implication | Reference |
|---|---|
| 181 \(\Rightarrow\) 8 | clear |
| 8 \(\Rightarrow\) 353 |
Disasters in metric topology without choice, Keremedis, K. 2002, Comment. Math. Univ. Carolinae |
Here are the links and statements of the form equivalence classes referenced above:
| Howard-Rubin Number | Statement |
|---|---|
| 181: | \(C(2^{\aleph_0},\infty)\): Every set \(X\) of non-empty sets such that \(|X|=2^{\aleph_0}\) has a choice function. |
| 8: | \(C(\aleph_{0},\infty)\): |
| 353: | A countable product of first countable spaces is first countable. |
Comment: