We have the following indirect implication of form equivalence classes:
			
| Implication | Reference | 
|---|---|
| 384 \(\Rightarrow\) 14 | 
							 	"Maximal filters, continuity and choice principles", Herrlich,  H. 1997, Quaestiones Math.  | 
					
| 14 \(\Rightarrow\) 371 | 								S´eminaire d’Analyse 1994, Morillon, 1993,  | 
					
Here are the links and statements of the form equivalence classes referenced above:
| Howard-Rubin Number | Statement | 
|---|---|
| 384: | Closed Filter Extendability for \(T_1\) Spaces: Every closed filter in a \(T_1\) topological space can be extended to a maximal closed filter.  | 
					
| 14: | BPI: Every Boolean algebra has a prime ideal.  | 
					
| 371: | There is an infinite, compact, Hausdorff, extremally disconnected topological space. Morillon [1993].  | 
					
Comment: