We have the following indirect implication of form equivalence classes:
			
| Implication | Reference | 
|---|---|
| 1 \(\Rightarrow\) 77 | 
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. | 
| 77: | A linear ordering of a set \(P\) is a well ordering if and only if \(P\) has no infinite descending sequences. Jech [1973b], p 23. | 
Comment: