We have the following indirect implication of form equivalence classes:
			
| Implication | Reference | 
|---|---|
| 1 \(\Rightarrow\) 35 | 
Here are the links and statements of the form equivalence classes referenced above:
| Howard-Rubin Number | Statement | 
|---|---|
| 1: | \(C(\infty,\infty)\): The Axiom of Choice: Every set of non-empty sets has a choice function. | 
| 35: | The union of countably many meager subsets of \({\Bbb R}\) is meager. (Meager sets are the same as sets of the first category.) Jech [1973b] p 7 prob 1.7. | 
Comment: