We have the following indirect implication of form equivalence classes:
| Implication | Reference |
|---|---|
| 202 \(\Rightarrow\) 91 | note-75 |
| 91 \(\Rightarrow\) 363 | Equivalents of the Axiom of Choice II, Rubin, 1985, theorem 5.7 |
| 363 \(\Rightarrow\) 364 | Zermelo's Axiom of Choice, Moore, 1982, page 325 |
Here are the links and statements of the form equivalence classes referenced above:
| Howard-Rubin Number | Statement |
|---|---|
| 202: | \(C(LO,\infty)\): Every linearly ordered family of non-empty sets has a choice function. |
| 91: | \(PW\): The power set of a well ordered set can be well ordered. |
| 363: | There are exactly \(2^{\aleph_0}\) Borel sets in \(\Bbb R\). G. Moore [1982], p 325. |
| 364: | In \(\Bbb R\), there is a measurable set that is not Borel. G. Moore [1982], p 325. |
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